CN110989248A - Display module, display device and manufacturing method of display module - Google Patents
Display module, display device and manufacturing method of display module Download PDFInfo
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- CN110989248A CN110989248A CN201911347562.2A CN201911347562A CN110989248A CN 110989248 A CN110989248 A CN 110989248A CN 201911347562 A CN201911347562 A CN 201911347562A CN 110989248 A CN110989248 A CN 110989248A
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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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
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Abstract
The invention discloses a display module, a display device and a manufacturing method of the display module. The display module provided by the embodiment of the invention is provided with a first display area and a second display area, wherein the light transmittance of the second display area is greater than that of the first display area, and the display module comprises: a display panel; the polarized light functional layer is arranged on the display panel in a laminated mode and comprises a liquid crystal layer and an alignment layer, the liquid crystal layer comprises liquid crystal molecules and dichromatic substances, and the alignment layer in the first display area is matched with the liquid crystal molecules in the liquid crystal layer to form liquid crystal molecule oriented orientation. According to the display module provided by the embodiment of the invention, the screen-down integration of the photosensitive assembly is facilitated, and the light inlet quantity of the photosensitive assembly can be ensured.
Description
Technical Field
The invention relates to the field of display, in particular to a display module, a display device and a manufacturing method of the display module.
Background
With the rapid development of electronic devices, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the electronic devices is concerned more and more in the industry.
Conventional electronic devices such as mobile phones, tablet computers, and the like need to integrate components such as a front camera, an earphone, an infrared sensor, and the like. In the prior art, a photosensitive element is disposed under a specific region (e.g., an opening, a high-transmittance region) of a display screen, so that external light can enter the photosensitive element under the screen through the specific region. But the polarisation component that is used for reducing the external light reflection of display screen can reduce the light quantity that external light got into photosensitive assembly, cuts the trompil to polarisation component and can influence polarisation component's quality again, reduces the yields.
Disclosure of Invention
The invention provides a display module, a display device and a manufacturing method of the display module, which are convenient for the screen-down integration of a photosensitive assembly and ensure the light inlet quantity of the photosensitive assembly.
In a first aspect, an embodiment of the present invention provides a display module, which has a first display area and a second display area, where a light transmittance of the second display area is greater than a light transmittance of the first display area, and the display module includes: a display panel; the polarized light functional layer is arranged on the display panel in a laminated mode and comprises a liquid crystal layer and an alignment layer, the liquid crystal layer comprises liquid crystal molecules and dichromatic substances, and the alignment layer in the first display area is matched with the liquid crystal molecules in the liquid crystal layer to form liquid crystal molecule oriented orientation.
According to an aspect of the embodiments of the present invention, the alignment layer has an alignment structure formed by aligning a surface of the alignment layer facing the liquid crystal layer in a first direction.
According to an aspect of the embodiments of the present invention, the second display region is provided with a non-alignment layer which is the same layer as the alignment layer and is not subjected to alignment treatment, or the second display region is further provided with a transparent filling material layer other than the alignment material which is the same layer as the alignment layer.
According to an aspect of the embodiments of the present invention, the alignment structure includes a plurality of alignment structures extending along the first direction, and the alignment structures are parallel to a surface of the alignment structure facing the liquid crystal layer, such that long axes of liquid crystal molecules of the liquid crystal layer located in the first display region are aligned parallel to the surface of the alignment structure facing the liquid crystal layer.
According to an aspect of an embodiment of the invention, the alignment structure comprises a trench or an aligned molecular structure.
According to an aspect of the embodiment of the invention, the liquid crystal molecules of the liquid crystal layer located in the second display region are in disordered arrangement, or the long axes of the liquid crystal molecules of the liquid crystal layer located in the second display region are vertically arranged with the surface of the alignment structure facing the liquid crystal layer.
According to one aspect of an embodiment of the present invention, the dichroic substance includes at least one of iodine, azo dye, anthraquinone dye, and tetrazine dye.
According to an aspect of an embodiment of the present invention, the alignment layer comprises a photo-alignment material and a photo-sensitive material.
According to an aspect of an embodiment of the invention, the photo-alignment material is an azo-based alignment material.
According to an aspect of the embodiment of the invention, the display module further includes a phase retardation layer, which is laminated on the side of the alignment layer facing away from the liquid crystal layer, and is disposed to cover the first display region and the second display region, or disposed to cover the first display region and match the shape of the alignment layer.
According to an aspect of the embodiments of the invention, the phase retardation layer is disposed between the display panel and the alignment layer.
According to an aspect of an embodiment of the present invention, the phase retardation layer is selected from a quarter-wave phase retardation layer, or a composite phase retardation layer of a quarter-wave phase retardation layer and a half-wave phase retardation layer.
In a second aspect, an embodiment of the present invention provides a display device, including: a display module according to any one of the above embodiments; and the optical sensor is arranged on one side of the display module, which is back to the alignment layer, and is arranged corresponding to the second display area.
In a third aspect, an embodiment of the present invention provides a method for manufacturing a display module, including: providing a display panel, wherein the display panel is provided with a first region and a second region, and the light transmittance of the second region is greater than that of the first region; forming an alignment material film layer on the display panel, wherein the alignment material film layer covers the first area; performing alignment treatment on the part of the alignment material film layer positioned in the first area to form an alignment layer corresponding to the first area; forming a liquid crystal film containing liquid crystal molecules and dichroic substances on the alignment material film layer; and curing the liquid crystal film.
According to an aspect of the embodiments of the invention, in the step of forming the alignment material film layer on the display panel, the alignment material film layer further covers the second region; or, the transparent material layer is arranged in the second area and is arranged at the same layer as the alignment material film layer.
The display module comprises a display panel and a polarization function layer, wherein the display panel is provided with a first display area and a second display area, and the light transmittance of the second display area is larger than that of the first display area. The light inlet quantity of the second display area can be guaranteed, so that the light inlet quantity of the photosensitive assembly corresponding to the second display area is guaranteed, the photosensitive effect is guaranteed, and therefore when the display module is applied to the display device, the photosensitive assembly is convenient to integrate under a screen. The range upon range of setting in display panel of polarisation functional layer, polarisation functional layer include liquid crystal layer and alignment layer, and the liquid crystal layer includes liquid crystal molecule and dichromatic material, and liquid crystal molecule cooperation forms liquid crystal molecule orientation in alignment layer and liquid crystal layer in first display area, can guarantee the polarisation effect in first display area, and need not to carry out cutting process to the polarisation functional layer, guarantees polarisation functional layer structural integrity, satisfies the yields.
In some optional embodiments, the display module further includes a phase retardation layer, the phase retardation layer and the liquid crystal layer can form a circular polarization structure, and when the display module is applied to the display device, reflection of external light can be further reduced, so that the display effect of the display device is further enhanced.
The display device according to an embodiment of the invention includes the display module according to any of the above embodiments and the optical sensor, wherein the optical sensor is disposed on a side of the display module facing away from the alignment layer and corresponds to the second display region. The polarized light functional layer can provide the polarized light effect in first display area among the display module assembly to reduce the reflection of external light, and then improve display device's display effect. And the polarisation functional layer does not provide the polarisation effect in the second display area to compare the light inlet volume that the regional improvement of polarisation external light, guarantee the light inlet volume at the sensitization subassembly of second display area setting, guarantee sensitization effect and formation of image effect.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
FIG. 1 is a schematic top view of a display module according to an embodiment of the invention;
FIG. 2 illustrates an exemplary cross-sectional view taken along line D-D of FIG. 1;
FIG. 3 shows a cross-sectional view taken along line D-D of FIG. 1 in accordance with yet another example;
FIG. 4 shows a cross-sectional view taken along line D-D of FIG. 1 in accordance with another example;
FIG. 5 shows a cross-sectional view taken along line D-D of FIG. 1 in accordance with yet another example;
FIG. 6 shows a cross-sectional view taken along line D-D of FIG. 1 in yet another example;
fig. 7 is a flowchart illustrating a method of manufacturing a display module according to an embodiment of the invention.
In the figure:
10-a display module;
100-a polarizing functional layer; 111-alignment layer; 112-unaligned layer; 113-a layer of transparent filler material; 120-a liquid crystal layer; 130-phase retardation layer;
200-a display panel;
PA1 — first display area; PA2 — second display area.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
On electronic devices such as mobile phones and tablet computers, photosensitive components such as a front camera, an infrared light sensor, and a proximity light sensor need to be integrated on a side where a display module is provided. In some technologies, a light-transmitting area can be arranged on the electronic device, the light-transmitting area can be an opening area, and can also be a display area with a display function, the photosensitive assembly is arranged on the back of the light-transmitting area, and under the condition that the photosensitive assembly normally works, the full-screen display or the opening screen display of the electronic device is achieved.
For reducing the influence of external light to electronic equipment's display quality, need set up polarizing element on the display screen this moment, but polarizing element can reduce the light inlet volume in printing opacity district to influence photosensitive assembly's result of use, and can influence polarizing element's quality to polarizing element cutting trompil, reduce the yields.
In order to solve the above problems, embodiments of the present invention provide a display module, a display device, and a method for manufacturing the display module, and embodiments of the display module, the display device, and the method for manufacturing the display module will be described below with reference to the accompanying drawings.
The embodiment of the invention provides a display module which can be applied to a display device. The display device may be a single display screen body, or may include other functional elements. For example, the display device may be a display device using an Organic Light-Emitting Diode (OLED).
Referring to fig. 1, fig. 1 is a schematic top view illustrating a display module according to an embodiment of the invention.
The display module 10 according to the embodiment of the present invention has the first display area PA1 and the second display area PA2, and preferably, the light transmittance of the second display area PA2 is greater than that of the first display area PA 1. It is understood that the second display area PA2 is illustrated as a circle in fig. 1, but may be a rectangle, an ellipse, a gourd shape, or a modified shape having an opening with respect to the first display area PA 1.
Herein, it is preferable that the light transmittance of the second display area PA2 is 15% or more. To ensure that the light transmittance of the second display area PA2 is greater than 15%, even greater than 40%, or even higher, the light transmittance of at least some functional film layers of the display panel 200 in this embodiment is greater than 80%, or even greater than 90%.
According to the display module 10 of the embodiment of the invention, the light transmittance of the second display area PA2 is greater than the light transmittance of the first display area PA1, so that the light incident amount of the second display area PA2 can be ensured, the light incident amount of the photosensitive component arranged corresponding to the second display area PA2 can be ensured, and the photosensitive effect of the photosensitive component can be ensured, therefore, when the polarization function layer 100 is applied to a display device, the sub-screen integration of the photosensitive component is facilitated.
Referring also to fig. 2, fig. 2 illustrates an exemplary cross-sectional view taken along line D-D of fig. 1.
The display module 10 includes a display panel 200 and a polarizing functional layer 100 stacked on the display panel 200. The light transmittance of the display panel 200 of the second display area PA2 is greater than the light transmittance of the display panel 200 of the first display area PA 1.
In some alternative embodiments, the display panel 200 of the first display area PA1 may have first light emitting pixel units thereon, and the display panel 200 of the second display area PA2 may have second light emitting pixel units thereon. The first light emitting pixel cells emit light to form a first display image corresponding to the first display area PA1, and the second light emitting pixel cells emit light to form a second display image corresponding to the second display area PA 2. The first display image and the second display image may together constitute a display image to be presented by the display device.
In other alternative embodiments, the first display area PA1 may have the first light emitting pixel units thereon, and the second display area PA2 has no light emitting pixel units thereon, i.e., the second display area PA2 is a non-display area. For example, the second display area PA2 has an open cell structure.
The polarization functional layer 100 includes a liquid crystal layer 120 and an alignment layer 111. The liquid crystal layer 120 includes liquid crystal molecules and dichroic substances. Wherein the dichroic substance has dichroism. Alternatively, the dichroic substance may be embedded in the liquid crystal molecules. The alignment layer 111 cooperates with the liquid crystal molecules in the liquid crystal layer 120 to form a liquid crystal molecular alignment in the first display area PA 1.
The display module 10 according to the embodiment of the invention includes the display panel 200 and the polarization functional layer 100, the display panel 200 has the first display area PA1 and the second display area PA2, and the light transmittance of the second display area PA2 is greater than that of the first display area PA 1. The light inlet quantity of second display area PA2 can be guaranteed to guarantee to correspond the light inlet quantity of the sensitization subassembly of second display area PA2 setting, guarantee the sensitization effect, consequently when display module assembly 10 is applied to display device, be convenient for the screen of sensitization subassembly under integrated. The polarized light functional layer 100 is stacked on the display panel 200, the polarized light functional layer 100 comprises a liquid crystal layer 120 and an alignment layer 111, the liquid crystal layer 120 comprises liquid crystal molecules and dichroic substances, the liquid crystal molecules are matched with each other in the alignment layer 111 and the liquid crystal layer 120 of the first display area PA1 to form liquid crystal molecule oriented orientation, the polarized light effect of the first display area PA1 can be guaranteed, the polarized light functional layer 100 does not need to be cut, the structural integrity of the polarized light functional layer 100 is guaranteed, and the yield is met.
The liquid crystal layer 120 may be distributed in the first display area PA1 and the second display area PA 2. The alignment layer 111 may be disposed only in the first display area PA 1. Specifically, the alignment layer 111 has an alignment structure formed by aligning a surface of the alignment layer 111 facing the liquid crystal layer 120 in a first direction. For example, the first direction corresponds to a direction of a long axis of liquid crystal molecules in the liquid crystal layer 120. The alignment structure having the first direction enables liquid crystal molecules in the liquid crystal layer 120 in contact therewith to be aligned in a predetermined direction, so that the polarization function layer 100 of the first display area PA1 has a polarization function.
The alignment structures are distributed in the first display area PA1, so that the natural light incident from one side of the liquid crystal layer 120 in the first display area PA1 is emitted as linearly polarized light through the liquid crystal layer 120, and the liquid crystal layer 120 is distributed in the first display area PA1 and the second display area PA2, so that the liquid crystal layer 120 does not need to be cut, and the cutting operation is prevented from affecting the yield of the polarized functional layer 100.
The dichroic substance in the liquid crystal layer 120 may be aligned in the same direction as the liquid crystal molecules in the liquid crystal layer 120 of the first display area PA1 while the liquid crystal molecules are aligned. That is, the dichroic material in the liquid crystal layer 120 is aligned in the same direction as the long axes of the liquid crystal molecules of the liquid crystal layer 120. After the dichroic materials are aligned, one of the lights perpendicular and parallel to the alignment of the dichroic materials is totally absorbed by the dichroic materials and the other passes through, thereby forming the liquid crystal layer 120 as a linearly polarizing layer.
Specifically, the dichromatic substance includes at least one of iodine, azo dye, anthraquinone dye, and tetrazine dye.
Referring to fig. 3 and 4 together, fig. 3 shows a cross-sectional view along D-D in fig. 1 of still another example, and fig. 4 shows a cross-sectional view along D-D in fig. 1 of another example.
Further, the alignment structure includes a plurality of alignment structures extending along the first direction, and the alignment structures are parallel to the surface of the alignment structure facing the liquid crystal layer 120, such that the long axes of the liquid crystal molecules of the liquid crystal layer 120 located in the first display area PA1 are aligned parallel to the surface of the alignment structure facing the liquid crystal layer 120.
Specifically, the orientation structure may be a groove, an oriented molecular structure, or the like.
It is to be understood that the alignment structure may be formed by a micro-scratch alignment method, a rubbing alignment method, a photo-alignment method, a silica oblique evaporation method, an ion beam alignment method, and the like, as long as the alignment layer 111 having the alignment structure can be formed and the liquid crystal layer 120 can be aligned. The alignment layer 111 can have an alignment direction to have an alignment effect by the above method.
Preferably, the alignment structure is formed by a photo-alignment process. The alignment structure formed after the light treatment has a regularly arranged and oriented molecular structure, and can align the liquid crystal molecules of the liquid crystal layer 120 at the joint. In particular, the alignment layer 111 may include a photo-alignment material and a photosensitive material. The photo-alignment material may be an azo-based alignment material.
In some embodiments, the second display area PA2 is provided with a non-alignment layer 112 that is the same layer as the alignment layer 111 and is not subjected to alignment treatment. The unaligned layer 112 does not have an alignment function because it is not subjected to an alignment treatment. The liquid crystal layer 120 in the second display area PA2 is not polarized, and the amount of light transmitted through the second display area PA2 of the polarization functional layer 100 is hardly reduced, so as to meet the use requirement of the photosensitive element disposed corresponding to the second display area PA 2.
Specifically, as shown in fig. 3, the liquid crystal molecules of the liquid crystal layer 120 located in the second display area PA2 are arranged in disorder. Alternatively, as shown in fig. 4, the long axes of the liquid crystal molecules of the liquid crystal layer 120 located in the second display area PA2 are aligned perpendicular to the surface of the alignment structure. In this way, a light transmitting path through the liquid crystal layer 120 can be formed, the second display area PA2 has no polarization effect, and the amount of light transmitted from the second display area PA2 of the polarization functional layer 100 is hardly reduced, so as to meet the use requirement of the photosensitive element disposed corresponding to the second display area PA 2.
Referring to fig. 5, fig. 5 is a cross-sectional view taken along line D-D of fig. 1 illustrating yet another example.
In other embodiments, the second display area PA2 is further provided with a transparent filler material layer 113 other than an alignment material disposed in the same layer as the alignment layer 111. Specifically, a hollow area is formed in the second display area PA2, and the transparent filling material layer 113 is disposed in the hollow area.
Referring to fig. 6, fig. 6 is a cross-sectional view taken along line D-D of fig. 1 illustrating yet another example.
In some embodiments, the polarization functional layer 100 further includes a phase retardation layer 130, the phase retardation layer 130 is laminated on the side of the alignment layer 111 facing away from the liquid crystal layer 120 and is disposed to cover the first display area PA1 and the second display area PA2 or the phase retardation layer 130 is disposed to cover only the first display area PA1 to match the shape of the alignment layer 111. The phase retardation layer 130 may be a layer having birefringence. For example, the phase retardation layer 130 may be crystal, calcite, or the like. Alternatively, the phase retardation layer 130 may also include a birefringent film comprising a polymer, an alignment film of a liquid crystal polymer, an alignment structure of a liquid crystal polymer, or the like. Specifically, the phase retardation layer 130 includes at least one of a quarter-wave phase retardation layer and a half-wave phase retardation layer. Preferably, the phase retardation layer 130 is selected from a quarter-wave phase retardation layer, or a composite phase retardation layer of a quarter-wave phase retardation layer and a half-wave phase retardation layer. The optical axis deflection angle of the half-wavelength phase retardation layer may be, for example, 75 °, and the optical axis deflection angle of the quarter-wavelength phase retardation layer may be, for example, 15 °. The phase retardation layer 130 and the liquid crystal layer 120 in the first display area PA1 may form a circular polarization structure, so that when the polarization functional layer 100 is applied to a display device, the reflection of external light may be further reduced by the polarization functional layer 100 corresponding to the first display area PA1, thereby further enhancing the display effect of the display device. Also, the amount of incident light hardly changes by the external light passing through the phase retardation layer 130 corresponding to the second display region.
Specifically, the phase retardation layer 130 is disposed between the display panel 200 and the liquid crystal layer 120. That is, the phase retardation layer 130 is disposed closer to the display panel 200 than the liquid crystal layer 120.
The first display area PA1 of the liquid crystal layer 120 may transmit light vibrating up and down or light vibrating left and right. The phase retardation layer 130, which is a quarter-wave phase retardation layer, may convert the phase of light. For example, the phase retardation layer 130 may convert light vibrating up and down or light vibrating left and right into right-handed circularly polarized light or left-handed circularly polarized light, respectively. In addition, the phase retardation layer 130 may convert right-handed circularly polarized light or left-handed circularly polarized light into light oscillating up and down or light oscillating left and right, respectively.
For example, the light that is transmitted through the liquid crystal layer 120 and vibrated left and right may transmit the phase retardation layer 130 to be converted into left-handed circularly polarized light. Incident light including left-handed circularly polarized light may be reflected at the cathode electrode of the display panel 200, and the incident light may be converted into right-handed circularly polarized light. When incident light including right-handed circularly polarized light passes through the phase retardation layer 130, the incident light may be converted into light vibrating up and down. The light vibrating up and down may be blocked by the liquid crystal layer 120, thereby playing a role of reducing external light reflection.
An embodiment of the present invention further provides a display device, including the display module 10 according to any of the above embodiments and a light sensor, where the light sensor is disposed on a side of the display module 10 opposite to the alignment layer 111 and corresponds to the second display area PA 2. The optical sensor may be a sensor capable of receiving an optical signal and converting the optical signal into an electrical signal, such as a fingerprint sensor, an image sensor, and the like. The polarizing function layer 100 in the display module 10 can provide a polarizing effect in the first display area PA1 to reduce the reflection of external light, thereby improving the display effect of the display device. And the polarization functional layer 100 does not provide a polarization effect in the second display area PA2 to increase the light incident amount of external light compared to the polarization area, ensure the light incident amount of the photosensitive member disposed in the second display area PA2, and ensure the photosensitive effect and the image forming effect.
Referring to fig. 7, fig. 7 is a flowchart illustrating a method for manufacturing a display module according to an embodiment of the invention.
The embodiment of the invention also provides a manufacturing method of the display device, which comprises the following steps:
s110: a display panel 200 is provided, the display panel 200 having a first region and a second region, the second region having a light transmittance greater than the light transmittance of the first region.
S120: an alignment material film is formed on the display panel 200, and the alignment material film covers the first region.
Specifically, the alignment material film layer may be formed on the display panel 200 by spin coating, blade coating, or the like. The alignment material film layer may be a polyimide-based organic material.
S130: the alignment material layer is aligned in the first region to form an alignment layer 111 corresponding to the first region.
Specifically, the alignment treatment may be performed by irradiating the alignment material film layer with ultraviolet rays or ion beams. Alternatively, the alignment material film layer may be subjected to alignment treatment by a rubbing method.
S140: and forming a liquid crystal film containing liquid crystal molecules and dichromatic substances on the alignment material film layer.
Among them, a liquid crystal film may be formed on the alignment film by spin coating, doctor blade coating, inkjet printing, or the like.
S150: and curing the liquid crystal film.
Wherein, the curing treatment may be a heating curing treatment.
In some optional embodiments, in step S130: the alignment material film layer also covers the second area. Specifically, a portion of the alignment material film layer located in the first region is aligned using a mask having an exposure pattern to form the alignment layer 111 corresponding to the first region, wherein the alignment material film layer located in the second region is not aligned.
In other alternative embodiments, in step S130: and arranging a transparent material layer on the same layer as the alignment material film layer in the second area.
In some optional embodiments, step S110 may be followed by: the phase retardation layer 130 is formed on the display panel 200. Correspondingly, in step S120, an alignment material film layer is formed on the phase retardation layer 130.
In accordance with the above-described embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a display module assembly, its characterized in that has first display area and second display area, the light transmissivity in second display area is greater than the light transmissivity in first display area, display module assembly includes:
a display panel;
the polarized light functional layer is stacked on the display panel and comprises a liquid crystal layer and an alignment layer, the liquid crystal layer comprises liquid crystal molecules and dichromatic substances, and the alignment layer and the liquid crystal molecules in the liquid crystal layer are matched to form liquid crystal molecule orientation in the first display area.
2. The display module according to claim 1, wherein the alignment layer has an alignment structure formed by aligning a surface of the alignment layer facing the liquid crystal layer along a first direction;
preferably, the second display region is provided with a non-alignment layer which is the same layer as the alignment layer and is not subjected to alignment treatment, or the second display region is provided with a transparent filling material layer which is different from the alignment material layer which is the same layer as the alignment layer.
3. The display module according to claim 2, wherein the alignment structure comprises a plurality of alignment structures extending along the first direction, the alignment structures being parallel to a surface of the alignment structures facing the liquid crystal layer, such that long axes of liquid crystal molecules of the liquid crystal layer in the first display region are aligned parallel to a surface of the alignment structures facing the liquid crystal layer;
preferably, the alignment structure comprises a groove or an aligned molecular structure.
4. The display module according to claim 1, wherein the liquid crystal molecules of the liquid crystal layer in the second display region are randomly arranged, or the long axes of the liquid crystal molecules of the liquid crystal layer in the second display region are vertically arranged with the surface of the alignment structure facing the liquid crystal layer.
5. The display module of claim 1, wherein the dichroic material comprises at least one of iodine, azo dyes, anthraquinone dyes, and tetrazine dyes.
6. The display module of claim 1, wherein the alignment layer comprises a photo-alignment material and a photosensitive material;
preferably, the photo-alignment material is an azo-based alignment material.
7. The display module according to claim 1, further comprising a phase retardation layer laminated on a side of the alignment layer facing away from the liquid crystal layer, and disposed to cover the first display region and the second display region, or disposed to cover the first display region and match a shape of the alignment layer;
preferably, the phase retardation layer is disposed between the display panel and the alignment layer.
8. The display module of claim 7,
the phase retardation layer is selected from a quarter-wave phase retardation layer or a composite phase retardation layer of a quarter-wave phase retardation layer and a half-wave phase retardation layer.
9. A display device, comprising:
the display module of any one of claims 1 to 8;
and the optical sensor is arranged on one side of the display module, which is back to the alignment layer, and is arranged corresponding to the second display area.
10. A manufacturing method of a display module is characterized by comprising the following steps:
providing a display panel, wherein the display panel is provided with a first region and a second region, and the light transmittance of the second region is greater than that of the first region;
forming an alignment material film layer on the display panel, wherein the alignment material film layer covers the first area;
performing alignment treatment on the part of the alignment material film layer, which is positioned in the first area, so as to form an alignment layer corresponding to the first area;
forming a liquid crystal film containing liquid crystal molecules and dichroic substances on the alignment material film layer;
curing the liquid crystal film;
preferably, in the step of forming an alignment material film layer on the display panel, the alignment material film layer further covers the second region; or, a transparent material layer in the same layer as the alignment material film layer is arranged in the second region.
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