CN112327542A - Display device and method for manufacturing the same - Google Patents
Display device and method for manufacturing the same Download PDFInfo
- Publication number
- CN112327542A CN112327542A CN201911021640.XA CN201911021640A CN112327542A CN 112327542 A CN112327542 A CN 112327542A CN 201911021640 A CN201911021640 A CN 201911021640A CN 112327542 A CN112327542 A CN 112327542A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- display device
- alignment
- layer
- crystal layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
Abstract
The invention relates to a display device and a preparation method thereof, wherein the display device comprises a substrate; a display device disposed on the substrate; the first alignment layer is arranged on one side, far away from the substrate, of the display device; the liquid crystal layer is arranged on one side, far away from the display device, of the first alignment layer; wherein the initial alignment angle of the liquid crystal layer relative to the display device is 0-30 degrees; or the initial alignment angle of the liquid crystal layer relative to the display device is 60-90 degrees. According to the display device, the first alignment layer and the liquid crystal layer are arranged on the surface of the display device, liquid crystal molecules in the liquid crystal layer are directionally arranged along the alignment direction of the first alignment layer through the alignment effect of the first alignment layer, so that narrow-viewing-angle display is realized, the minimum viewing angle can reach 90 degrees, and the display effect of the display device cannot be reduced.
Description
Technical Field
The invention relates to the technical field of light emitting diodes, in particular to a display device and a preparation method thereof.
Background
In the current society, display devices are ubiquitous and go deep into every person's life in many ways, such as mobile phones, computers, televisions, vehicles, outdoor advertising, and the like. Especially, self-luminous display devices, such as Light Emitting Diode (LED) display devices, Organic Light Emitting Diode (OLED) display devices, quantum dot light emitting diode (QLED) display devices, and the like, have the advantages of self-display light emission, low power consumption, wide color gamut, and the like, and will dominate the display field. With the continuous progress of display technology, the viewing angle of the display device has been widened from 120 ° to 170 ° or more. However, with the development of technology, the information density carried by the display screen is higher and higher, especially for mobile phones and personal computers. The wide visual angle meets the requirements of people on the viewing effect of video pictures on one hand, and on the other hand, information carried by the display screen is leaked. In order to protect personal privacy and commercial confidentiality and avoid information leakage caused by wide-viewing-angle display, a display device has a narrow-viewing-angle display function, and the display device is another technical requirement.
Therefore, there is still a need for improvement in the current display devices and methods for manufacturing the same.
Disclosure of Invention
Accordingly, there is a need for a display device with controllable viewing angle.
A display device, comprising:
a substrate;
a display device disposed on the substrate;
the first alignment layer is arranged on one side, far away from the substrate, of the display device; and
the liquid crystal layer is arranged on one side, far away from the display device, of the first alignment layer;
wherein the initial alignment angle of the liquid crystal layer relative to the display device is 0-30 degrees; or the initial alignment angle of the liquid crystal layer relative to the display device is 60-90 degrees.
In one embodiment, the display device includes: a patterned pixel isolation wall and a plurality of light emitting pixel units spaced apart by the pixel isolation wall.
In one embodiment, the display device further includes: the patterned light blocking walls are arranged in the liquid crystal layer and divide the liquid crystal layer into a plurality of liquid crystal units;
the positions of the light blocking walls correspond to the positions of the pixel isolation walls, and the positions of the liquid crystal units correspond to the positions of the light emitting pixel units one to one.
In one embodiment, the first alignment layer is divided into a plurality of alignment regions corresponding to the liquid crystal cells one to one, the alignment regions include a first sub-alignment region and a second sub-alignment region adjacent to each other, and an alignment direction of the first sub-alignment region is opposite to an alignment direction of the second sub-alignment region.
In one embodiment, the display device further includes a first electrode disposed on a side of the liquid crystal layer close to the substrate, and a second electrode disposed on a side of the liquid crystal layer away from the substrate.
In one embodiment, the first electrode is a patterned conductive film, the patterned conductive film includes a plurality of mutually independent electrode patterns, and positions of the plurality of electrode patterns correspond to positions of the plurality of liquid crystal cells one to one.
In one embodiment, the display device further includes: the second alignment layer is arranged on one side, far away from the first alignment, of the liquid crystal layer, and the alignment direction of the second alignment layer is in reverse parallel to the alignment direction of the first alignment layer.
In one embodiment, the liquid crystal of the liquid crystal layer is positive liquid crystal, and the initial alignment angle of the liquid crystal layer is 0-30 degrees; or
The liquid crystal of the liquid crystal layer is negative liquid crystal, and the initial alignment angle of the liquid crystal layer is 60-90 degrees.
In one embodiment, the display device is selected from one of an OLED, a QLED, and an LCD.
Another object of the present invention is to provide a method for manufacturing a display device, comprising the steps of:
providing a substrate;
forming a display device on the substrate;
forming a first alignment layer on one side of the display device far away from the substrate;
forming a liquid crystal layer on one side of the first alignment layer far away from the display device;
wherein the initial alignment angle of the liquid crystal layer relative to the display device is 0-30 degrees; or the initial alignment angle of the liquid crystal layer relative to the display device is 60-90 degrees.
According to the display device, the first alignment layer and the liquid crystal layer are arranged on the surface of the display device, liquid crystal molecules in the liquid crystal layer are directionally arranged according to the alignment direction through the alignment effect of the first alignment layer, so that the liquid crystal layer has an initial alignment angle of 0-30 degrees or an initial alignment angle of 60-90 degrees relative to the display device, narrow-viewing-angle display is achieved through the liquid crystal layer, the minimum viewing angle can reach 90 degrees, and the display effect of the display device cannot be reduced.
Drawings
FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display device according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display device according to yet another embodiment of the invention.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a display device 100 according to an embodiment of the present invention includes a substrate 110, a display device 120, a first alignment layer 140, and a liquid crystal layer 150.
Wherein the display device 120 is arranged on the substrate 110 and the first alignment layer 140 is arranged on a side of the display device 120 facing away from the substrate 110. The liquid crystal layer 150 is disposed on a side of the first alignment layer 140 away from the display device 120; the initial alignment angle of the liquid crystal layer 150 relative to the display device 120 is 0-30 degrees; alternatively, the initial alignment angle of the liquid crystal layer 150 with respect to the display device 120 is 60 to 90 degrees.
It should be understood that in this embodiment, only the film layer structure relevant to the invention point of this embodiment is illustrated, and the film layer structure not relevant to the invention point of this embodiment is omitted.
The liquid crystal has dielectric anisotropy and double refraction angle, for example, the refractive index of a long axis of positive liquid crystal is larger than that of a short axis, when incident light is parallel to the long axis of liquid crystal molecules, the incident light is subjected to maximum refraction, and the transmittance of the light is low; when the incident light is perpendicular to the long axis of the liquid crystal molecules, the incident light undergoes minimal refraction and the light transmittance is high.
The display device 100 is provided with the first alignment layer 140 with the alignment direction on the surface of the display device 120, and liquid crystal molecules in the liquid crystal layer 150 are aligned under the action of the first alignment layer 140 with the alignment direction, so that the liquid crystal molecules in the liquid crystal layer 150 have an initial alignment angle of 0-30 degrees or 60-90 degrees relative to the display device 120; since the refractive index of the liquid crystal in the long axis direction is greater than the refractive index of the liquid crystal in the short axis direction, the incident light emitted from the display device 120 in different directions is refracted by the liquid crystal layer 150, the emergent light has different light intensities, so that narrow viewing angle display can be realized, the minimum viewing angle can reach 90 °, and the display effect of the display device cannot be reduced.
It should be noted that the alignment angle refers to an angle between the long axis direction of the liquid crystal molecules and the alignment layer after the liquid crystal molecules are aligned.
In the present embodiment, the liquid crystal of the liquid crystal layer 150 is a positive liquid crystal, and the initial alignment angle of the liquid crystal layer 150 is 0 to 30 °.
Further, the liquid crystal of the liquid crystal layer 150 is a positive nematic liquid crystal.
In other embodiments, the liquid crystal of the liquid crystal layer 150 is a negative liquid crystal, and the initial alignment angle of the liquid crystal layer 150 is 60 ° to 90 °.
Further, the liquid crystal of the liquid crystal layer 150 is a negative nematic liquid crystal.
It is understood that the liquid crystal of the liquid crystal layer 150 may preferably be nematic liquid crystal or smectic liquid crystal.
In the present embodiment, the material of the first alignment layer 140 is selected from one of PMMA (polymethyl methacrylate), PI (polyimide), PDMS (polydimethylsiloxane), PEN (polyethylene naphthalate), and fluorine-containing resin.
The fluorine-containing resin mainly includes Polytetrafluoroethylene (PTFE), Polychlorotrifluoroethylene (PCTFE), polyvinylidene fluoride (PVDF), ethylene-tetrafluoroethylene copolymer (ETFE), ethylene-chlorotrifluoroethylene copolymer (ECTFE), polyvinyl fluoride (PVF), and the like.
Specifically, the first alignment layer 140 has an alignment direction, and the liquid crystal layer 150 is in direct contact with the first alignment layer 140.
In this way, by using the organic material as the material of the first alignment layer 140, on one hand, the alignment of the liquid crystal molecules in the liquid crystal layer 150 according to the alignment direction can be achieved by the alignment effect of the first alignment layer 140, and on the other hand, the surface of the display device 120 away from the substrate 110 can be planarized.
Specifically, the organic material film may be processed by uv alignment or rubbing alignment to make the first alignment layer 140 have an alignment direction. The specific manner of implementing the above method according to the embodiment of the present invention is not particularly limited, and only the first alignment layer 140 is formed to have a desired alignment direction.
In the present embodiment, the thickness of the first alignment layer 140 is 10nm to 50 nm.
In the present embodiment, the display apparatus 100 further includes a planarization layer 130, and the planarization layer 130 is disposed between the display device 120 and the first alignment layer 140.
In the present embodiment, the material of the planarization layer 130Selected from SiO2、AlO3、ZrO2、Y2O3GaO and SiN3One kind of (1).
Understandably, SiO2、AlO3、ZrO2、Y2O3GaO, and the like oxides and SiN3The insulating materials such as nitride are used as the material of the flat layer, so that the surface of the display device 120 can be well flattened, and the materials have high visible light transmittance, the visible light transmittance of which is greater than 80%, and the influence on the emergent light transmittance of the display device 120 is small.
Further, the thickness of the planarization layer 130 is 10nm to 100 nm.
In this embodiment, the display device 100 further includes a second alignment layer (not shown) disposed on a side of the liquid crystal layer 150 away from the first alignment layer 140, and an alignment direction of the second alignment layer is anti-parallel to the alignment direction of the first alignment layer 140.
It can be understood that the alignment direction of the liquid crystal molecules in the liquid crystal layer by the first alignment layer is antiparallel to the alignment direction of the liquid crystal molecules by the second alignment layer, and the liquid crystal molecules in the liquid crystal layer can be aligned more stably.
Further, the material of the second alignment layer is selected from one of PMMA, PI, PDMS, PEN, and fluorine-containing resin. The thickness of the second alignment layer is 10nm to 50 nm.
In this embodiment, the display device 100 further includes a cover plate 160, and the cover plate 160 is disposed on a side of the liquid crystal layer 150 away from the substrate 110.
Specifically, the cover plate 160 and the first alignment layer 140 enclose an accommodating cavity; the liquid crystal layer 150 is disposed in the accommodating cavity and directly contacts the first alignment layer 140, such that liquid crystal molecules in the liquid crystal layer 150 are aligned along the alignment direction of the first alignment layer 140.
Further, the second alignment layer is disposed on a side of the liquid crystal layer 150 adjacent to the cover plate 160 and is in direct contact with the liquid crystal layer 150.
In the present embodiment, the display device 120 may be an OLED display device, a QLED display device, or an LCD display device. In this manner, providing the liquid crystal layer 150 on the surface of the display device 120, narrow viewing angle display can be achieved without affecting the display effect of the display device 120.
Further, the display device 120 includes patterned pixel isolation walls 122 and a plurality of light emitting pixel cells 124 spaced apart by the pixel isolation walls.
In other embodiments, as shown in fig. 2, the display apparatus 200 further includes a patterned light blocking wall 240 in addition to the substrate 210, the display device 220, the first alignment layer 230, the liquid crystal layer 250, and the cover plate 260.
The light blocking walls 240 are disposed in the liquid crystal layer 250 and partition the liquid crystal layer 250 into a plurality of liquid crystal cells 254. The positions of the light blocking walls 240 correspond to the positions of the pixel isolation walls 222 of the display device 220, and the positions of the liquid crystal cells 254 correspond to the positions of the light emitting pixel cells 224 of the display device 220 one by one.
Thus, the light emitted from the adjacent light-emitting pixel units 224 can be prevented from being refracted by the liquid crystal layer 250 to generate color mixing, and the display effect of the display device can be improved.
Further, the light blocking walls 240 have the same thickness as the liquid crystal layer 250. Specifically, the thickness of the light blocking wall 240 and the thickness of the liquid crystal layer 250 are 1 μm to 10 μm, respectively and independently.
Further, the material of the light blocking wall 240 may be black resin or opaque metal such as aluminum.
In one embodiment, the first alignment layer 230 is divided into a plurality of alignment regions 234, the plurality of alignment regions 234 correspond to the plurality of liquid crystal cells 254 one by one, and each alignment region 234 includes a first sub-alignment region (not shown) and a second sub-alignment region (not shown), wherein an alignment direction of the first sub-alignment region is opposite to an alignment direction of the second sub-alignment region.
It can be understood that the opposite direction of the alignment direction of the first sub-alignment region and the alignment direction of the second sub-alignment region means that the angle between the alignment direction of the first sub-alignment region and the substrate 210 is the same as the angle between the alignment direction of the second sub-alignment region and the substrate, but the inclination direction of the angle formed between the first sub-alignment region and the substrate 210 is opposite, that is, the first sub-alignment region and the second sub-alignment region are mirror images. Each alignment region corresponds to one liquid crystal cell 254, and aligns liquid crystal molecules in the corresponding liquid crystal cell 254, so that the liquid crystal molecules in each liquid crystal cell 254 are arranged in an anti-parallel manner along a separation line between the first sub-alignment region and the second sub-alignment region. In other embodiments, the alignment direction of the first sub-alignment region and the alignment direction of the second sub-alignment region may be the same.
In other embodiments, as shown in fig. 3, the display device 300 further includes a first electrode 340 and a second electrode 380, the first electrode 340 is disposed on a side of the liquid crystal layer 370 close to the substrate 310, and the second electrode 380 is disposed on a side of the liquid crystal layer 370 away from the substrate 310.
Specifically, the first electrode 340 is disposed between the first alignment layer 350 and the substrate 310, and the second electrode 380 is disposed between the liquid crystal layer 370 and the cover plate 380.
Since the liquid crystal molecules in the liquid crystal layer 370 have dielectric anisotropy and birefringence characteristics, the electrodes are disposed on two sides of the liquid crystal layer 370, and a voltage is applied to the first electrode 340 and the second electrode 380 to form an electric field, so that the deflection angle of the liquid crystal molecules in the liquid crystal layer 370 is controlled by the magnitude of the electric field, and further, the transmittance of light emitted from the display device 320 at different angles is controlled by the liquid crystal layer 370, thereby realizing the control of wide and narrow viewing angles.
Further, the materials of the first electrode 340 and the second electrode 380 may be ITO, ZnO, SnO, ZTO, and other conductive oxides, Mg, Ag, Li, and other conductive metals or metal alloys (such as magnesium silver alloy, magnesium lithium alloy, and the like), respectively and independently.
Further, the thickness of the first electrode 340 is 8nm to 30nm, and the thickness of the second electrode 380 is 8nm to 30 nm.
In the present embodiment, the first electrode 340 is a patterned conductive film, the patterned conductive film includes a plurality of independent electrode patterns, and the positions of the plurality of electrode patterns correspond to the positions of the plurality of liquid crystal cells 374 one to one.
Thus, the conductive material is provided with the whole conductive film or the patterned first electrode 340 and the patterned second electrode 380 on both sides of the liquid crystal layer 370, so that on one hand, the conductive material can play a role of electromagnetic shielding to prevent the display device 320 or nearby electromagnetic fields from influencing the deflection of liquid crystal molecules, on the other hand, the conductive film layer forms the patterned first electrode 340 and/or the patterned second electrode 380 through patterning treatment, and under the condition of applying voltage, the control of the deflection angle of the liquid crystal molecules in the liquid crystal layer 370 can be realized, and further, the wide and narrow viewing angle display can be realized.
Further, the second electrode 380 is also a patterned conductive film, and the second electrode 380 and the first electrode 340 have the same patterned structure.
Specifically, the display device 300 includes a substrate 310, a display device 320, a planarization layer 330, a first electrode 340, a first alignment layer 350, a liquid crystal layer 370, a second electrode 380, a cover plate 390, and a light blocking wall 360 embedded in the liquid crystal layer 370, which are sequentially disposed on the substrate 310. The first electrode 340 and the second electrode 380 are patterned conductive thin film layers, and the patterned structure of the conductive thin film layers matches with the liquid crystal layer 370.
Further, when the display device 300 includes both the second alignment layer and the second electrode 380, the second alignment layer is disposed between the liquid crystal layer 370 and the second electrode 380, and the second alignment layer is in direct contact with the liquid crystal layer 370.
Further, in order to better maintain the viewing angle stability of the display device 300, the display device 300 further includes an active element (not shown) electrically connected to the first electrode 340 and/or the second electrode 380. Thus, the first electrode 340, the second electrode 380 and the active device group form an active device, and the active device controls the voltage of the liquid crystal layer, so that the stability of the liquid crystal molecule deflection is improved, and the stable viewing angle of the display device 300 is better maintained.
An embodiment of the present invention provides a method for manufacturing a display device, including:
providing a substrate;
forming a display device on a substrate;
forming a first alignment layer on one side of the display device far away from the substrate;
forming a liquid crystal layer on one side of the first alignment layer far away from the display device;
the initial alignment angle of the liquid crystal layer relative to the display device is 0-30 degrees; or the initial alignment angle of the liquid crystal layer relative to the display device is 60-90 degrees.
In one embodiment, the method further comprises the step of providing a cover plate;
the step of forming the liquid crystal layer includes:
covering a cover plate on the first alignment layer, wherein an accommodating cavity is defined between the cover plate and the first alignment layer;
and forming a liquid crystal layer in the accommodating cavity.
In this way, the liquid crystal layer is in direct contact with the first alignment layer, so that liquid crystal molecules in the liquid crystal layer are aligned along the alignment direction of the first alignment layer.
In one embodiment, the method further includes forming a second alignment layer on a side of the cover plate close to the substrate;
the alignment direction of the second alignment layer is antiparallel to the alignment direction of the first alignment layer.
The following are specific examples
Example 1A display device 100 as shown in FIG. 1 and a method of manufacturing the same
1) A substrate 110 is provided, an OLED display device 120 is fabricated on the substrate 110, the display device 120 including patterned pixel isolation walls 122 and a plurality of light emitting pixel units 124 spaced apart by the pixel isolation walls 122.
2) A 30nm thick gallium oxide thin film is prepared as a planarization layer 130 on the surface of the OLED display device 120 using a sol-gel process. The gallium oxide film has good light transmission and high compactness, so the gallium oxide film can be used as a flat layer and also can be used as an encapsulation layer of an OLED display device.
3) A Polyimide (PI) film with a thickness of 10nm is coated on the planarization layer 130, and an alignment angle of 2 ° is prepared, resulting in a first alignment layer 140 having an alignment direction.
4) The first alignment layer 140 is covered with a cover plate 160, a containing cavity is formed between the cover plate 160 and the first alignment layer 140, positive nematic liquid crystal is injected into the containing cavity by capillary action to form a liquid crystal layer 150, and then packaging is performed, so as to obtain the display device 100 shown in fig. 1.
The light emitting direction of the display device 100 is perpendicular to the long axes of the liquid crystal molecules, and due to the positive liquid crystal, the refractive index of the long liquid crystal axis is greater than that of the short liquid crystal axis, so that the long liquid crystal axis has greater refraction to light, the light emitting rate is low, the refractive index of the short liquid crystal axis is relatively low, the light emitting rate is high, and the emergent light of the incident light in different directions has different light intensities. The visual angle of the display device 100 is evaluated, the horizontal visual angle can be less than 100 degrees, and wide and narrow visual angle display can be well realized.
Embodiment 2 display device 200 shown in fig. 2 and method for manufacturing the same
1) A substrate 210 is provided, an LCD display device 220 is fabricated on the substrate 210, the display device 220 including patterned pixel isolation walls 222 and a plurality of light emitting pixel cells 224 spaced apart by the pixel isolation walls 222.
2) A layer of PMMA (polymethyl methacrylate) film with a thickness of 30nm is prepared on the surface of the LCD display device 220 by using a doctor blade process, and then a patterned light blocking wall 240 is prepared on the PMMA film layer by using an evaporation process using aluminum as a material, the position of the light blocking wall 240 corresponds to the position of the pixel isolation wall 222 of the LCD display device 220, and the height of the light blocking wall 240 is 50 nm.
3) The light blocking wall 240 divides the surface of the PMMA thin film into a plurality of regions, wherein each region is further divided into a first alignment region and a second alignment region which are symmetrical to each other, and alignment angles of 30 ° and 150 ° are respectively prepared in the first alignment region and the second alignment region, so as to obtain the first alignment layer 230.
4) A cover plate 260 covers the light blocking wall 240, and the cover plate 260, the light blocking wall 240 and the first alignment layer 230 together enclose a plurality of accommodating cavities; the positive nematic liquid crystal is injected into the accommodating cavities by capillary action to obtain a plurality of liquid crystal cells 254, and a liquid crystal layer 250 is formed, wherein the positions of the liquid crystal cells 254 correspond to the positions of the light-emitting pixel units 224 of the LCD device in a one-to-one manner. And then packaged, resulting in the display device 200 shown in fig. 2.
The light emitting direction of the display device 200 forms a certain angle with the long axis of the liquid crystal molecules, and due to the positive liquid crystal, the refractive index of the long axis of the liquid crystal is greater than that of the short axis of the liquid crystal, the long axis of the liquid crystal has greater refraction to light, the light emitting rate is low, the refractive index of the short axis of the liquid crystal is relatively low, the light emitting rate is high, and the emergent light of the incident light in different directions has different light intensities. The visual angle of the display device 200 is measured, the horizontal visual angle is less than 90 degrees, and wide and narrow visual angle display can be well realized.
Embodiment 3A display device 300 as shown in FIG. 3 and a method of manufacturing the same
1) A substrate 310 is provided and a QLED display device 320 is fabricated on the substrate 310.
2) A 60nm thick zirconia film was prepared as a planarization layer 330 on the surface of the OLED display device 320.
3) On the surface of the planarization layer 330, an 8nm thick Zinc Tin Oxide (ZTO) layer is prepared by a patterning process according to the pattern structure of the light emitting pixel units 324 of the display device 320, resulting in a patterned first electrode 340, where the position of the first electrode 340 corresponds to the position of the light emitting pixel units 324.
4) A 20nm thick fluorine-containing resin film was drawn on the surface of the first electrode 340, and an alignment angle of 89 ° was prepared on the surface of the fluorine-containing resin film, to obtain a first alignment layer 350.
5) On the first alignment layer 350, black resin is used as a raw material to prepare a patterned light blocking wall 360, the position of the light blocking wall 360 corresponds to the position of the pixel isolation wall 322 of the QLED display device 320, and the height of the light blocking wall 360 is 50 nm.
6) A cover plate 390 is provided, and a patterned ITO thin film is prepared on one surface of the cover plate 390 as a second electrode 380, the second electrode 380 having the same patterned structure as the first electrode 340.
7) Covering the cover plate 390 on the first alignment layer 350, wherein the second electrode 380 faces the first alignment layer 350, and the cover plate 390, the light blocking wall 360 and the first alignment layer 350 together enclose a plurality of accommodating cavities; negative nematic liquid crystal is injected into the plurality of accommodating cavities by capillary action to obtain a plurality of liquid crystal cells 354, a liquid crystal layer 370 is formed, and the positions of the plurality of liquid crystal cells 374 correspond to the positions of the plurality of light-emitting pixel cells 324 of the QLED display device in a one-to-one manner. And then encapsulated, resulting in the display device 300 shown in fig. 3.
Under the condition that no voltage is applied to the first electrode 340 and the second electrode 380 of the display device 300, the emission direction of the light emitted by the QLED display device 320 is not affected by the liquid crystal layer, and the display device displays the light with a wide viewing angle. Under the condition that voltage is applied to the first electrode 340 and the second electrode 380, liquid crystal in the liquid crystal layer 370 is deflected under the action of an electric field, and the light emitting directions of incident light in different directions of the QLED display device 320 are limited, so that narrow viewing angle display is realized.
In the negative liquid crystal, the refractive index of the liquid crystal major axis is lower than that of the liquid crystal minor axis, and when incident light is parallel to the molecular major axis, the light undergoes minimum refraction and has high transmittance, and when incident light is perpendicular to the molecular major axis, the light undergoes maximum refraction and has low transmittance. The viewing angle of the display device 300 was evaluated, and in the absence of applied voltage, the liquid crystal was 89 ° from the surface of the QLED display, and the exit direction of light in the display device was wide viewing angle display, unaffected by the liquid crystal layer. Under the condition of an external electric field, liquid crystals deflect, the light emitting directions of incident light in different directions are limited, and narrow-view-angle display is achieved. By controlling the voltage, the wide and narrow visual angle conversion and display can be well realized.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display device, comprising:
a substrate;
a display device disposed on the substrate;
the first alignment layer is arranged on one side, far away from the substrate, of the display device;
the liquid crystal layer is arranged on one side, far away from the display device, of the first alignment layer;
wherein the initial alignment angle of the liquid crystal layer relative to the display device is 0-30 degrees; or the initial alignment angle of the liquid crystal layer relative to the display device is 60-90 degrees.
2. The display device according to claim 1, wherein the display device comprises:
a patterned pixel isolation wall and a plurality of light emitting pixel units spaced apart by the pixel isolation wall.
3. The display device according to claim 2, further comprising:
the patterned light blocking walls are arranged in the liquid crystal layer and divide the liquid crystal layer into a plurality of liquid crystal units;
the position of the light blocking wall corresponds to the position of the pixel isolation wall;
the positions of the liquid crystal units correspond to the positions of the light-emitting pixel units one by one.
4. The device according to claim 3, wherein the first alignment layer is divided into a plurality of alignment regions corresponding to the liquid crystal cells one to one, and the alignment regions include a first sub-alignment region and a second sub-alignment region adjacent to each other, and an alignment direction of the first sub-alignment region is opposite to an alignment direction of the second sub-alignment region.
5. The display device according to any one of claims 1 to 4, further comprising:
the first electrode is arranged on one side, close to the substrate, of the liquid crystal layer;
and the second electrode is arranged on one side of the liquid crystal layer far away from the substrate.
6. The display device according to claim 5, wherein the first electrode is a patterned conductive film, the patterned conductive film includes a plurality of mutually independent electrode patterns, and positions of the plurality of electrode patterns correspond to positions of the plurality of liquid crystal cells one to one.
7. The display device according to claim 6, further comprising:
the second alignment layer is arranged on one side, far away from the first alignment layer, of the liquid crystal layer, and the alignment direction of the second alignment layer is in reverse parallel to the alignment direction of the first alignment layer.
8. The display device according to claim 6, wherein the liquid crystal of the liquid crystal layer is a positive liquid crystal, and an initial alignment angle of the liquid crystal layer is 0 to 30 °;
or the liquid crystal of the liquid crystal layer is negative liquid crystal, and the initial alignment angle of the liquid crystal layer is 60-90 degrees.
9. The display device according to claim 6, wherein the display device is selected from one of an OLED, a QLED, and an LCD.
10. A method for manufacturing a display device, comprising the steps of:
providing a substrate;
forming a display device on the substrate;
forming a first alignment layer on one side of the display device far away from the substrate;
forming a liquid crystal layer on one side of the first alignment layer far away from the display device;
wherein the initial alignment angle of the liquid crystal layer relative to the display device is 0-30 degrees; or the initial alignment angle of the liquid crystal layer relative to the display device is 60-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021640.XA CN112327542A (en) | 2019-10-25 | 2019-10-25 | Display device and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911021640.XA CN112327542A (en) | 2019-10-25 | 2019-10-25 | Display device and method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112327542A true CN112327542A (en) | 2021-02-05 |
Family
ID=74319706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911021640.XA Pending CN112327542A (en) | 2019-10-25 | 2019-10-25 | Display device and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112327542A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007094358A1 (en) * | 2006-02-17 | 2007-08-23 | Sharp Kabushiki Kaisha | Display, and viewing angle control device used therein |
| CN101097343A (en) * | 2006-06-29 | 2008-01-02 | Lg.菲利浦Lcd株式会社 | Viewing-angle controllable color filter substrate, liquid crystal display having the same, and manufacturing method thereof |
| US20080117364A1 (en) * | 2006-10-30 | 2008-05-22 | Epson Imaging Devices Corporation | Liquid crystal device and electronic apparatus |
| CN101762909A (en) * | 2008-12-22 | 2010-06-30 | 三星电子株式会社 | Alignment substrate for aligning liquid crystal molecules, liquid crystal display panel having the same, and method of manufacturing the alignment substrate |
| CN103941484A (en) * | 2014-04-30 | 2014-07-23 | 京东方科技集团股份有限公司 | Flexible liquid crystal display panel and manufacturing method thereof |
| CN105372883A (en) * | 2015-11-03 | 2016-03-02 | 昆山龙腾光电有限公司 | Liquid crystal display device with switchable visual angle |
| CN109239995A (en) * | 2018-11-23 | 2019-01-18 | 昆山龙腾光电有限公司 | Liquid crystal display device and its driving method |
| CN109856845A (en) * | 2019-03-12 | 2019-06-07 | 武汉华星光电技术有限公司 | Color membrane substrates, flexible liquid crystal panel and preparation method |
-
2019
- 2019-10-25 CN CN201911021640.XA patent/CN112327542A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007094358A1 (en) * | 2006-02-17 | 2007-08-23 | Sharp Kabushiki Kaisha | Display, and viewing angle control device used therein |
| CN101097343A (en) * | 2006-06-29 | 2008-01-02 | Lg.菲利浦Lcd株式会社 | Viewing-angle controllable color filter substrate, liquid crystal display having the same, and manufacturing method thereof |
| US20080117364A1 (en) * | 2006-10-30 | 2008-05-22 | Epson Imaging Devices Corporation | Liquid crystal device and electronic apparatus |
| CN101762909A (en) * | 2008-12-22 | 2010-06-30 | 三星电子株式会社 | Alignment substrate for aligning liquid crystal molecules, liquid crystal display panel having the same, and method of manufacturing the alignment substrate |
| CN103941484A (en) * | 2014-04-30 | 2014-07-23 | 京东方科技集团股份有限公司 | Flexible liquid crystal display panel and manufacturing method thereof |
| CN105372883A (en) * | 2015-11-03 | 2016-03-02 | 昆山龙腾光电有限公司 | Liquid crystal display device with switchable visual angle |
| CN109239995A (en) * | 2018-11-23 | 2019-01-18 | 昆山龙腾光电有限公司 | Liquid crystal display device and its driving method |
| CN109856845A (en) * | 2019-03-12 | 2019-06-07 | 武汉华星光电技术有限公司 | Color membrane substrates, flexible liquid crystal panel and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7078775B2 (en) | Display devices, electronic devices | |
| JP7008439B2 (en) | Display devices and electronic devices | |
| TWI387829B (en) | Color display device | |
| TWI709791B (en) | Display device and electronic device | |
| US9229269B2 (en) | Display apparatus and display method | |
| KR20180027366A (en) | Electronic device, image display method, program, and display system | |
| KR20120109305A (en) | Light-emitting device | |
| US8896921B2 (en) | Wire grid type polarization structures, methods of manufacturing wire grid type polarization structures, and organic light emitting diode (OLED) displays having wire grid type polarization structures | |
| US20130341659A1 (en) | Display panel | |
| US11360334B2 (en) | Display device, display system and display method | |
| JP6946126B2 (en) | Display system | |
| KR102438630B1 (en) | Organic light emitting display device | |
| CN107425129B (en) | organic light-emitting display panel, color temperature adjusting method thereof and display device | |
| JP2018031944A (en) | Display system and electronic apparatus | |
| CN112327542A (en) | Display device and method for manufacturing the same | |
| US20170363906A1 (en) | Display device | |
| WO2017152545A1 (en) | Light-emitting display device and manufacturing method therefor | |
| KR101912338B1 (en) | Reflection type display device | |
| US10216999B2 (en) | Display system, electronic device, and display method | |
| US20190079285A1 (en) | Display structure with dimming module and biasing dimming module and parallel plate dimming module thereof | |
| KR20200049399A (en) | Electrochromic device and display device including the same | |
| JP6863695B2 (en) | Display device and hybrid display method | |
| CN215577464U (en) | Micro LED display device and electronic equipment | |
| JP2018054901A (en) | Display system and electronic apparatus | |
| CN220342747U (en) | Super-structure lens OLED light-emitting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210205 |
|
| RJ01 | Rejection of invention patent application after publication |