CN106019689A - Display module and manufacturing method thereof, and display device - Google Patents
Display module and manufacturing method thereof, and display device Download PDFInfo
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- CN106019689A CN106019689A CN201610575654.6A CN201610575654A CN106019689A CN 106019689 A CN106019689 A CN 106019689A CN 201610575654 A CN201610575654 A CN 201610575654A CN 106019689 A CN106019689 A CN 106019689A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000010521 absorption reaction Methods 0.000 claims abstract description 113
- 230000010287 polarization Effects 0.000 claims abstract description 90
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 19
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 15
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 6
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 69
- 230000008602 contraction Effects 0.000 description 22
- 239000000758 substrate Substances 0.000 description 21
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 10
- 239000012790 adhesive layer Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
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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)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a display module and a manufacturing method thereof, and a display device, belonging to the technical field of liquid crystal display. The display module comprises a display panel, and a first polaroid and a second polaroid which are attached to both sides of the display panel, wherein the pattern formed by the intersection of the orthographic projection of a first absorption axis on the display panel and the orthographic projection of a second absorption axis on the display panel is an axial symmetry pattern; the symmetric axis of the axial symmetry pattern comprises the line of the display panel in the friction direction; the orthographic projection of the first absorption axis on the display panel and the orthographic projection of the second absorption axis on the display panel respectively intersect with the friction direction; the first polarization direction of polarized light obtained by passing light rays through the first polaroid is perpendicular to the second polarization direction of polarized light obtained by passing light rays through the second polaroid; and at least one of the first polarization direction and second polarization direction is parallel to the friction direction. The invention solves the problem of tilting in the display panel, and achieves the effect of preventing the display panel from tilting. The display module is used for display panels.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a display module, a manufacturing method thereof and a display device.
Background
With the continuous development of display technology, display devices are widely used in the display field. Illustratively, the Display device may be a Liquid Crystal Display (LCD). A display device generally includes a display module and a backlight source.
In the related art, a display module includes: the display panel comprises a display panel, an upper polaroid and a lower polaroid, wherein the upper polaroid is attached to the light emergent side of the display panel, the lower polaroid is attached to the light incident side of the display panel, the absorption axis of the upper polaroid is perpendicular to the absorption axis of the lower polaroid, and the direction of the absorption axis of the upper polaroid (namely the length direction of the absorption axis) and the direction of the absorption axis of the lower polaroid are parallel to the friction direction of the display panel. The display panel comprises an array substrate and a color film substrate which are formed in a box-to-box mode, and a liquid crystal layer filled between the array substrate and the color film substrate, wherein the array substrate comprises alignment grooves formed by adopting a Rubbing process, liquid crystal molecules in the liquid crystal layer are distributed in the alignment grooves, and the Rubbing direction of the display panel is also the length direction of the alignment grooves.
In the process of implementing the invention, the inventor finds that the related art has at least the following problems:
under the influence of the polarizer manufacturing process, the polarizer is easy to shrink along the absorption axis direction under the high-temperature and high-humidity condition, and the shrinkage force generated by shrinkage drives the surface of the display panel in contact with the polarizer to shrink, so that the display panel is tilted.
Disclosure of Invention
The invention provides a display module, a manufacturing method thereof and a display device, aiming at solving the problem that a display panel is warped. The technical scheme is as follows:
in a first aspect, a display module is provided, the display module includes: the display panel comprises a display panel, a first polaroid and a second polaroid, wherein the first polaroid and the second polaroid are attached to two sides of the display panel;
a graph formed by intersecting an orthographic projection of a first absorption axis on the display panel and an orthographic projection of a second absorption axis on the display panel is an axisymmetric graph, the symmetry axis of the axisymmetric graph comprises a straight line where the friction direction of the display panel is located, and the orthographic projection of the first absorption axis on the display panel and the orthographic projection of the second absorption axis on the display panel are both intersected with the straight line where the friction direction is located, the first absorption axis is the absorption axis of the first polarizer, and the second absorption axis is the absorption axis of the second polarizer;
the first polarization direction of the polarized light obtained by the light passing through the first polarizer is perpendicular to the second polarization direction of the polarized light obtained by the light passing through the second polarizer, and the first polarization direction and the second polarization direction have a direction parallel to the friction direction.
Optionally, the first polarizer includes: a first angle compensation layer, the second polarizer comprising: a second angle compensation layer;
when the first polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is parallel to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is perpendicular to the friction direction;
when the second polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is perpendicular to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is parallel to the friction direction.
Optionally, the first absorption axis is perpendicular to the second absorption axis.
Optionally, the structure of the first polarizer is the same as that of the second polarizer, and each of the first polarizer and the second polarizer sequentially includes, from the position close to the display panel to the position far from the display panel: the angle compensation film comprises an adhesion layer, an angle compensation layer, a polyvinyl alcohol PVA layer and a cellulose triacetate TAC layer.
Optionally, the first polarizer is an upper polarizer, and the second polarizer is a lower polarizer; or,
the first polarizer is a lower polarizer, and the second polarizer is an upper polarizer;
the upper polarizer is located on the light emitting side of the display panel, and the lower polarizer is located on the light incident side of the display panel.
In a second aspect, a method for manufacturing a display module is provided, the method including:
providing a display panel;
providing a first polarizer;
providing a second polarizer;
attaching the first polarizer and the second polarizer to two sides of the display panel, so that a graph formed by intersecting an orthographic projection of a first absorption axis on the display panel and an orthographic projection of a second absorption axis on the display panel is an axisymmetric graph, a symmetry axis of the axisymmetric graph comprises a straight line where a friction direction of the display panel is located, and the orthographic projection of the first absorption axis on the display panel and the orthographic projection of the second absorption axis on the display panel are both intersected with the straight line where the friction direction is located, wherein the first absorption axis is an absorption axis of the first polarizer, and the second absorption axis is an absorption axis of the second polarizer;
the first polarization direction of the polarized light obtained by the light passing through the first polarizer is perpendicular to the second polarization direction of the polarized light obtained by the light passing through the second polarizer, and the first polarization direction and the second polarization direction have a direction parallel to the friction direction.
Optionally, the first polarizer includes: a first angle compensation layer, the second polarizer comprising: a second angle compensation layer;
when the first polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is parallel to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is perpendicular to the friction direction;
when the second polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is perpendicular to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is parallel to the friction direction.
Optionally, the first absorption axis is perpendicular to the second absorption axis.
Optionally, the structure of the first polarizer is the same as that of the second polarizer, and attaching the first polarizer and the second polarizer to two sides of the display panel includes:
attaching the first polarizer and the second polarizer to two sides of the display panel, so that each of the first polarizer and the second polarizer sequentially comprises from being close to the display panel to being far away from the display panel: the angle compensation film comprises an adhesion layer, an angle compensation layer, a polyvinyl alcohol PVA layer and a cellulose triacetate TAC layer.
Optionally, the first polarizer is an upper polarizer, and the second polarizer is a lower polarizer; or,
the first polarizer is a lower polarizer, and the second polarizer is an upper polarizer;
attaching the first polarizer and the second polarizer to both sides of the display panel, including:
attaching the upper polarizer to the light emitting side of the display panel;
and attaching the lower polarizer to the light incident side of the display panel.
In a third aspect, there is provided a display device including: backlight and display module assembly of the first aspect.
The technical scheme provided by the invention has the beneficial effects that:
according to the display module, the manufacturing method thereof and the display device, the pattern formed by intersecting the orthographic projection of the first absorption shaft on the display panel and the orthographic projection of the second absorption shaft on the display panel is an axisymmetric pattern, and the contraction force in the direction of the first absorption shaft and the contraction force in the direction of the second absorption shaft can be mutually offset, namely, the contraction forces on the two sides of the display panel can be mutually offset, so that the display panel can be prevented from tilting. The problem that the display panel is warped is solved, and the effect of preventing the display panel from warping is achieved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments 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 to obtain other drawings based on these drawings without creative efforts.
Fig. 1-1 is a top view of a display device provided in the related art;
fig. 1-2 are top views of another display device provided in the related art;
fig. 1-3 are cross-sectional views of the display device shown in fig. 1-1;
FIGS. 1-4 are cross-sectional views of the display device shown in FIGS. 1-3;
FIG. 2-1 is a top view of a display module according to an embodiment of the invention;
FIG. 2-2 is a schematic structural diagram of a polarizer provided in the embodiment shown in FIG. 2-1;
FIG. 2-3 is a cross-sectional view of the display module provided in the embodiment shown in FIG. 2-1;
FIG. 3 is a flowchart illustrating a method for manufacturing a display module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Referring to fig. 1-1, which shows a top view of a display device 0 provided in the related art, referring to fig. 1-1, the display device 0 includes: a display module 00 and a backlight (not shown in fig. 1).
The display module 00 may include: the display panel 001, the upper polarizer 002, and the lower polarizer (not shown in fig. 1), the panel surface of the display panel 001, the panel surface of the upper polarizer 002, and the panel surface of the lower polarizer may be rectangular, the direction parallel to the short side of the rectangle may be the x-axis direction, and the direction parallel to the long side of the rectangle may be the y-axis direction. The upper polarizer 002 is attached to the light exit side of the display panel 001, the lower polarizer is attached to the light entrance side of the display panel 001, the absorption axis a1 of the upper polarizer 002 is perpendicular to the absorption axis a2 of the lower polarizer, a direction parallel to the rubbing direction C of the display panel 001 exists in the absorption axis direction (the length direction of the absorption axis a 1) of the upper polarizer 002 and the absorption axis direction (the length direction of the absorption axis a 2) of the lower polarizer, and the rubbing direction C of the display panel 001 is parallel to the y-axis direction. Illustratively, as shown in fig. 1-1, the longitudinal direction of the absorption axis a2 of the lower polarizer is parallel to the rubbing direction C, and as shown in fig. 1-2, the longitudinal direction of the absorption axis a1 of the upper polarizer 002 is parallel to the rubbing direction C.
In the display device 0 shown in fig. 1-1, the absorption axis a1 of the upper polarized light 002 is parallel to the short side of the rectangle, and the absorption axis a2 of the lower polarized light is parallel to the long side of the rectangle, when the upper polarized light 002 contracts along the absorption axis direction of the upper polarized light 002, and the lower polarized light contracts along the absorption axis direction of the lower polarized light, the contraction force of the lower polarized light is greater than that of the upper polarized light 002, so that the contraction force acting on the light incident surface of the display panel 001 is greater than that acting on the light emergent surface of the display panel 001, and the edge of the display panel 001 tilts downward (toward the light incident surface of the display panel), thereby causing the middle of the display panel 001 to protrude upward (toward the light emergent surface of the display panel). Illustratively, as shown in fig. 1 to 3, which show cross-sectional views of the display device 0 shown in fig. 1 to 1, referring to fig. 1 to 3, the display device 0 includes a display module 00 and a backlight 01, the display module 00 includes: display panel 001, go up polaroid 002 and lower polaroid 003, display panel 001 can include array substrate 0011 and color filter substrate 0012, go up polaroid 002 attached at the light-emitting side of display panel 001 (go up polaroid 002 attached on color filter substrate 0012), lower polaroid 003 is attached at the light-incoming side of display panel 001 (lower polaroid 003 is attached on array substrate 0011), backlight 01 sets up the one side of keeping away from display panel 001 at lower polaroid 003, because the contractile force of lower polaroid 003 is greater than the contractile force of last polaroid 002, therefore, the edge of display panel 001 perks downwards, the middle upwards protrusion.
In the display device 0 shown in fig. 1-2, the absorption axis a1 of the upper polarized light 002 is parallel to the long side of the rectangle, and the absorption axis a2 of the lower polarized light is parallel to the short side of the rectangle, when the upper polarized light 002 contracts along the absorption axis direction of the upper polarized light 002, and the lower polarized light contracts along the absorption axis direction of the lower polarized light, the contraction force of the upper polarized light is greater than that of the lower polarized light 001, so that the contraction force acting on the light-emitting surface of the display panel 001 is greater than that acting on the light-incident surface of the display panel 001, the edge of the display panel 001 tilts upward (toward the light-emitting surface side of the display panel), and further the middle of the display panel 001 is recessed downward (toward the light-incident surface side of the display panel). Illustratively, as shown in fig. 1 to 4, which show cross-sectional views of the display device 0 shown in fig. 1 to 2, referring to fig. 1 to 4, the display device 0 includes a display module 00 and a backlight 01, the display module 00 includes: display panel 001, go up polaroid 002 and lower polaroid 003, go up polaroid 002 and attach in the light-emitting side of display panel 001, lower polaroid 003 is attached in the income light side of display panel 001, and backlight 01 sets up the one side of keeping away from display panel 001 at lower polaroid 003, because the contractile force of last polaroid 002 is greater than the contractile force of lower polaroid 003, consequently, the edge perk that makes progress of display panel 001, middle undercut.
Referring to fig. 2-1, which shows a top view of a display module 02 according to an embodiment of the present invention, referring to fig. 2-1, the display module 02 includes: a display panel 021, a first polarizer 022, and a second polarizer (not shown in fig. 2-1), the first polarizer 022 and the second polarizer being attached to both sides of the display panel 021.
A graph formed by intersecting the orthographic projection of the first absorption axis B1 on the display panel 021 with the orthographic projection of the second absorption axis B2 on the display panel 021 is an axisymmetric graph, the symmetry axis of the axisymmetric graph comprises a straight line of a friction direction E of the display panel 021, the orthographic projection of the first absorption axis B1 on the display panel 021 and the orthographic projection of the second absorption axis B2 on the display panel 021 are both intersected with the straight line of the friction direction E, the first absorption axis B1 is an absorption axis of the first polarizer 022, and the second absorption axis B2 is an absorption axis of the second polarizer;
in which a first polarization direction (not shown in fig. 2-1) of polarized light obtained by the light passing through the first polarizer 022 and a second polarization direction (not shown in fig. 2-1) of polarized light obtained by the light passing through the second polarizer are perpendicular, and there is a direction parallel to the rubbing direction E in the first polarization direction and the second polarization direction.
In summary, in the display module provided in the embodiment of the invention, since the orthogonal projection of the first absorption axis on the display panel and the orthogonal projection of the second absorption axis on the display panel intersect to form an axisymmetric pattern, the contraction force in the first absorption axis direction and the contraction force in the second absorption axis direction can be cancelled out, that is, the contraction forces on the two sides of the display panel can be cancelled out, so that the display panel can be prevented from tilting. The problem that the display panel is warped is solved, and the effect of preventing the display panel from warping is achieved.
Optionally, in the embodiment of the present invention, an included angle B1 between a straight line of the orthographic projection of the first absorption axis B1 on the display panel 021 and the rubbing direction E is equal to an included angle B2 between a straight line of the orthographic projection of the second absorption axis B2 on the display panel 021 and the rubbing direction E. Illustratively, the size of angle b1 and the size of angle b2 are both equal to 45 degrees. That is, the first absorption axis B1 is perpendicular to the second absorption axis B2.
Optionally, the first polarizer 022 includes: a first angle compensation layer (not shown in fig. 2-1), the second polarizer comprising: a second angle compensation layer (not shown in fig. 2-1); when the first polarization direction is parallel to the rubbing direction E, the first angle compensation layer is used for performing angle compensation on the polarization direction of the first polarizer 022, so that the first polarization direction of the polarized light passing through the first polarizer 022 is parallel to the rubbing direction E, and the second angle compensation layer is used for performing angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is perpendicular to the rubbing direction E; when the second polarization direction is parallel to the rubbing direction E, the first angle compensation layer is used for performing angle compensation on the polarization direction of the first polarizer 022, so that the first polarization direction of the polarized light passing through the first polarizer 022 is perpendicular to the rubbing direction E, and the second angle compensation layer is used for performing angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is parallel to the rubbing direction E. Wherein, the setting on first angle compensation layer and second angle compensation layer can be convenient for the display module assembly and carry out normal demonstration.
Optionally, in the embodiment of the present invention, the structure of the first polarizer 022 is the same as that of the second polarizer. Each of the first and second polarizing plates includes: an adhesive (adhesive) layer, an angle compensation layer, a polyvinyl alcohol (PVA) layer and a Cellulose Triacetate (TAC) layer. Each of the first polarizer 022 and the second polarizer sequentially includes, from being close to the display panel 021 to being far from the display panel 021: the display panel comprises an adhesion layer, an angle compensation layer, a PVA layer and a TAC layer, wherein the adhesion layer is used for attaching the polarizer to the display panel, the angle compensation layer is used for carrying out angle compensation on the polarization direction of the polarizer, the PVA layer is used for realizing the polarization function of the polarizer, the TAC layer is used for protecting the PVA layer, and the specific functions of all the layers and the realization principle of the corresponding functions can refer to the related technology, and the embodiment of the invention is not repeated herein.
Alternatively, referring to fig. 2-2, which shows a schematic structural diagram of a first polarizer 022 provided in an embodiment of the invention, referring to fig. 2-2, the first polarizer 022 sequentially includes: an adhesive layer 0221, an angle compensation layer 0222, a PVA layer 0223, and a TAC layer 0224. Optionally, in the embodiment of the present invention, the first polarizer 022 is an upper polarizer, and the second polarizer is a lower polarizer; or, the first polarizer 022 is a lower polarizer and the second polarizer is an upper polarizer; the upper polarizer is located at the light exit side of the display panel 021, and the lower polarizer is located at the light entrance side of the display panel 021.
Alternatively, referring to fig. 2-3, which illustrate a cross-sectional view of the display module 02 provided in the embodiment of fig. 2-1, referring to fig. 2-3, the display module 02 includes a display panel 021, a first polarizer 022, and a second polarizer 023, wherein the first polarizer 022 includes: an adhesive layer 0221, an angle compensation layer 0222, a PVA layer 0223, and a TAC layer 0224, and the second polarizer 023 includes: an adhesive layer 0231, an angle compensation layer 0232, a PVA layer 0233 and a TAC layer 0234, wherein the first polarizer 022 is attached to one side of the display panel 021 through the adhesive layer 0221, and the second polarizer 023 is attached to the other side of the display panel 021 through the adhesive layer 0231. For example, the first polarizer 022 is attached to the light-emitting side of the display panel 021, and the second polarizer 023 is attached to the light-entering side of the display panel 021, which is not described herein again in the embodiments of the present invention.
In summary, in the display module provided in the embodiment of the invention, since the orthogonal projection of the first absorption axis on the display panel and the orthogonal projection of the second absorption axis on the display panel intersect to form an axisymmetric pattern, the contraction force in the first absorption axis direction and the contraction force in the second absorption axis direction can be cancelled out, that is, the contraction forces on the two sides of the display panel can be cancelled out, so that the display panel can be prevented from tilting. The problem that the display panel is warped is solved, and the effect of preventing the display panel from warping is achieved.
After the display panel is tilted, the display module is easy to leak light, so that the display module displays images unevenly and has poor display effect.
In the related art, in order to avoid the tilting of the display panel, the thickness of the array substrate or the color film substrate of the display panel may be increased, or the backlight backplane is provided, so as to avoid the tilting of the display panel, but the thickness of the array substrate or the color film substrate is increased, or the backlight backplane is provided, so that the thickness of the display module is increased, and the display module is difficult to be thinned; the display module provided by the embodiment of the invention can avoid the tilting of the display panel without increasing the thickness of the array substrate or the color film substrate and arranging the backlight backboard, and can reduce the thicknesses of the array substrate and the color film substrate within a certain range, thereby reducing the thickness of the display module and realizing the thinning of the display module.
In the related art, the tilting of the display panel can be avoided by changing the attaching mode of the polarizer or changing the material of the double-sided adhesive tape for attaching the polarizer, however, no matter how to change the attaching mode of the polarizer, the upper polarizer and the lower polarizer have the absorption axis of one polarizer parallel to the friction direction of the display panel, and the mode can only reduce the tilting of the display panel but cannot avoid the tilting of the display panel, so the effect is poor.
In the related art, the tilting problem of the display panel can be solved by reducing the thickness of the polarizer, and particularly, after the thickness of the polarizer is reduced, the shrinkage force of the polarizer acting on the surface of the display panel is small, so that the tilting problem can be solved, however, the process cost for reducing the polarizer is high, the surface flatness of the reduced polarizer is low, and the thickness of the polarizer is limited and cannot be reduced without limit; the embodiment of the invention does not need to reduce the thickness of the polaroid, has lower cost and does not influence the yield of products.
The display module provided by the embodiment of the invention can be applied to the following method, and the manufacturing method and the manufacturing principle of the display module in the embodiment of the invention can be referred to the description in each embodiment below.
Referring to fig. 3, which shows a flowchart of a method for manufacturing a display module according to an embodiment of the present invention, referring to fig. 3, the method may include:
step 301, providing a display panel.
Step 302, providing a first polarizer.
Step 303, providing a second polarizer.
Step 304, attaching the first polarizer and the second polarizer to two sides of the display panel, so that a graph formed by intersecting the orthographic projection of the first absorption axis on the display panel and the orthographic projection of the second absorption axis on the display panel is an axisymmetric graph, the symmetry axis of the axisymmetric graph comprises a straight line where the friction direction of the display panel is located, the orthographic projection of the first absorption axis on the display panel and the orthographic projection of the second absorption axis on the display panel are both intersected with the straight line where the friction direction is located, the first absorption axis is the absorption axis of the first polarizer, and the second absorption axis is the absorption axis of the second polarizer.
The first polarization direction of the polarized light obtained by the light passing through the first polarizer is vertical to the second polarization direction of the polarized light obtained by the light passing through the second polarizer, and the first polarization direction and the second polarization direction have a direction parallel to the friction direction.
In summary, in the manufacturing method of the display module according to the embodiment of the invention, since the orthogonal projection of the first absorption axis on the display panel and the orthogonal projection of the second absorption axis on the display panel intersect to form an axisymmetric pattern, the contraction force in the first absorption axis direction and the contraction force in the second absorption axis direction can be cancelled out, that is, the contraction forces on the two sides of the display panel can be cancelled out, so that the display panel can be prevented from tilting. The problem that the display panel is warped is solved, and the effect of preventing the display panel from warping is achieved.
In the embodiment of the present invention, the display panel may be an LCD display panel, and includes an array substrate, a color filter substrate, and a liquid crystal layer filled between the array substrate and the color filter substrate. The specific structure and the forming method of the display panel can refer to the related art, and the embodiments of the present invention are not described herein again.
The structure of first polaroid is the same with the structure of second polaroid, and every polaroid in first polaroid and the second polaroid includes in proper order: an adhesive layer, an angle compensation layer, a PVA layer and a TAC layer.
Optionally, the first polarizer includes: the first angle compensation layer, the second polaroid includes: a second angle compensation layer;
when the first polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer to enable the first polarization direction of the polarized light passing through the first polarizer to be parallel to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer to enable the second polarization direction of the polarized light passing through the second polarizer to be perpendicular to the friction direction;
when the second polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is perpendicular to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is parallel to the friction direction.
According to the embodiment of the invention, the normal display of the display module can be realized by arranging the first angle compensation layer and the second angle compensation layer.
Optionally, the first absorption axis is perpendicular to the second absorption axis.
Optionally, the structure of the first polarizer is the same as that of the second polarizer, and the first polarizer and the second polarizer are attached to two sides of the display panel, including:
attaching first polaroid and second polaroid in the both sides of display panel, make every polaroid in first polaroid and the second polaroid from being close to display panel to keeping away from display panel include in proper order: the angle compensation film comprises an adhesion layer, an angle compensation layer, a polyvinyl alcohol PVA layer and a cellulose triacetate TAC layer. Specifically, the polarizer may be attached to the surface of the display panel through an adhesive layer, which is not limited in the embodiment of the present invention.
Optionally, the first polarizer is an upper polarizer, and the second polarizer is a lower polarizer; or,
the first polarizer is a lower polarizer, and the second polarizer is an upper polarizer;
attaching a first polarizer and a second polarizer to both sides of a display panel, comprising:
attaching an upper polarizer to the light emergent side of the display panel;
the lower polarizer is attached to the light incident side of the display panel.
In summary, in the manufacturing method of the display module according to the embodiment of the invention, since the orthogonal projection of the first absorption axis on the display panel and the orthogonal projection of the second absorption axis on the display panel intersect to form an axisymmetric pattern, the contraction force in the first absorption axis direction and the contraction force in the second absorption axis direction can be cancelled out, that is, the contraction forces on the two sides of the display panel can be cancelled out, so that the display panel can be prevented from tilting. The problem that the display panel is warped is solved, and the effect of preventing the display panel from warping is achieved.
Referring to fig. 4, which shows a schematic structural diagram of a display device 03 according to an embodiment of the present invention, referring to fig. 4, the display device 03 may include: a backlight 031 and a display module 02.
This display module assembly 02 includes: display panel 021, first polaroid 022 and second polaroid 023, the light-emitting side of attached display panel 02 of first polaroid 022, the light-entering side of attached display panel 021 of second polaroid 023, backlight 031 sets up the one side of keeping away from display panel 021 at second polaroid 023.
The display device 03 can be any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
In summary, in the display device provided in the embodiment of the invention, since the orthogonal projection of the first absorption axis on the display panel and the orthogonal projection of the second absorption axis on the display panel intersect to form an axisymmetric pattern, the contraction force in the first absorption axis direction and the contraction force in the second absorption axis direction can be cancelled out, that is, the contraction forces on the two sides of the display panel can be cancelled out, so that the display panel can be prevented from tilting. The problem that the display panel is warped is solved, and the effect of preventing the display panel from warping is achieved.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. The utility model provides a display module assembly, its characterized in that, display module assembly includes: the display panel comprises a display panel, a first polaroid and a second polaroid, wherein the first polaroid and the second polaroid are attached to two sides of the display panel;
a graph formed by intersecting an orthographic projection of a first absorption axis on the display panel and an orthographic projection of a second absorption axis on the display panel is an axisymmetric graph, the symmetry axis of the axisymmetric graph comprises a straight line where the friction direction of the display panel is located, and the orthographic projection of the first absorption axis on the display panel and the orthographic projection of the second absorption axis on the display panel are both intersected with the straight line where the friction direction is located, the first absorption axis is the absorption axis of the first polarizer, and the second absorption axis is the absorption axis of the second polarizer;
the first polarization direction of the polarized light obtained by the light passing through the first polarizer is perpendicular to the second polarization direction of the polarized light obtained by the light passing through the second polarizer, and the first polarization direction and the second polarization direction have a direction parallel to the friction direction.
2. The display module of claim 1,
the first polarizer includes: a first angle compensation layer, the second polarizer comprising: a second angle compensation layer;
when the first polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is parallel to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is perpendicular to the friction direction;
when the second polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is perpendicular to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is parallel to the friction direction.
3. The display module of claim 1,
the first absorption axis is perpendicular to the second absorption axis.
4. The display module according to any one of claims 1 to 3,
the structure of the first polarizer is the same as that of the second polarizer, and each of the first polarizer and the second polarizer sequentially comprises, from the position close to the display panel to the position far away from the display panel: the angle compensation film comprises an adhesion layer, an angle compensation layer, a polyvinyl alcohol PVA layer and a cellulose triacetate TAC layer.
5. The display module according to any one of claims 1 to 3,
the first polarizer is an upper polarizer, and the second polarizer is a lower polarizer; or,
the first polarizer is a lower polarizer, and the second polarizer is an upper polarizer;
the upper polarizer is located on the light emitting side of the display panel, and the lower polarizer is located on the light incident side of the display panel.
6. A manufacturing method of a display module is characterized by comprising the following steps:
providing a display panel;
providing a first polarizer;
providing a second polarizer;
attaching the first polarizer and the second polarizer to two sides of the display panel, so that a graph formed by intersecting an orthographic projection of a first absorption axis on the display panel and an orthographic projection of a second absorption axis on the display panel is an axisymmetric graph, a symmetry axis of the axisymmetric graph comprises a straight line where a friction direction of the display panel is located, and the orthographic projection of the first absorption axis on the display panel and the orthographic projection of the second absorption axis on the display panel are both intersected with the straight line where the friction direction is located, wherein the first absorption axis is an absorption axis of the first polarizer, and the second absorption axis is an absorption axis of the second polarizer;
the first polarization direction of the polarized light obtained by the light passing through the first polarizer is perpendicular to the second polarization direction of the polarized light obtained by the light passing through the second polarizer, and the first polarization direction and the second polarization direction have a direction parallel to the friction direction.
7. The method of claim 6,
the first polarizer includes: a first angle compensation layer, the second polarizer comprising: a second angle compensation layer;
when the first polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is parallel to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is perpendicular to the friction direction;
when the second polarization direction is parallel to the friction direction, the first angle compensation layer is used for carrying out angle compensation on the polarization direction of the first polarizer, so that the first polarization direction of the polarized light passing through the first polarizer is perpendicular to the friction direction, and the second angle compensation layer is used for carrying out angle compensation on the polarization direction of the second polarizer, so that the second polarization direction of the polarized light passing through the second polarizer is parallel to the friction direction.
8. The method of claim 6,
the first absorption axis is perpendicular to the second absorption axis.
9. The method according to any one of claims 6 to 8,
the structure of the first polaroid is the same as that of the second polaroid, and the first polaroid and the second polaroid are attached to two sides of the display panel, and the method comprises the following steps:
attaching the first polarizer and the second polarizer to two sides of the display panel, so that each of the first polarizer and the second polarizer sequentially comprises from being close to the display panel to being far away from the display panel: the angle compensation film comprises an adhesion layer, an angle compensation layer, a polyvinyl alcohol PVA layer and a cellulose triacetate TAC layer.
10. The method according to any one of claims 6 to 8,
the first polarizer is an upper polarizer, and the second polarizer is a lower polarizer; or,
the first polarizer is a lower polarizer, and the second polarizer is an upper polarizer;
attaching the first polarizer and the second polarizer to both sides of the display panel, including:
attaching the upper polarizer to the light emitting side of the display panel;
and attaching the lower polarizer to the light incident side of the display panel.
11. A display device, characterized in that the display device comprises: backlight and a display module according to any one of claims 1 to 5.
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