JP2016040569A - Stereoscopic vision display device, liquid crystal lens cell with low reflection layer, and sensor substrate with low reflection layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stereoscopic vision display device that includes a liquid crystal lens cell capable of good stereoscopic display.SOLUTION: There is provided a stereoscopic display device including a display device, a liquid crystal lens cell that is arranged on a surface on an observer side of the display device, and a low reflection layer that is arranged on a surface on an observer side of the liquid crystal lens cell.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an autostereoscopic display device including a liquid crystal lens cell.

  In recent years, in the field of display devices, there has been an increasing demand for three-dimensional display (stereoscopic display). In the display device, in order to perform three-dimensional display, it is necessary for the observer to observe the right eye image and the left eye image separately by some method. As a three-dimensional display method, for example, there is a method using glasses for three-dimensional display having a polarizing lens or the like, but in recent years, a naked-eye type three-dimensional display method that allows an observer to observe a three-dimensional display with the naked eye has attracted attention. ing.

As an autostereoscopic display device, for example, a stereoscopic display device including a parallax barrier substrate has been put into practical use.
The parallax barrier substrate separates the left eye image and the right eye image displayed on the display device by applying an electric field in the liquid crystal layer to form a light shielding portion and a transmission portion in a stripe shape. It enables autostereoscopic viewing.
As such a parallax barrier substrate, for example, as described in Patent Literature 1 and Patent Literature 2, a substrate having a liquid crystal layer containing liquid crystal molecules and a polarizing plate sandwiching the liquid crystal layer can be used.

JP 2012-181275 A JP 2013-235159 A JP 2012-173517 A JP 2012-173318 A

  As a naked-eye type stereoscopic display device, a stereoscopic display device including a liquid crystal lens cell has been proposed (Patent Documents 3 and 4). Since the liquid crystal lens cell does not require a polarizing plate, the liquid crystal lens cell can have higher transmittance than a parallax barrier substrate, and is expected to save energy in a stereoscopic display device. Yes. In addition, a stereoscopic display device including a liquid crystal lens cell can theoretically widen an angle at which a stereoscopic display can be visually recognized, as compared with a stereoscopic display device including a parallax barrier substrate. 3D display can be visually recognized.

  However, in a stereoscopic display device including a liquid crystal lens cell, it is still difficult to perform sufficient stereoscopic display, and it has not been put into practical use.

  The present invention has been made in view of the above circumstances, and provides a stereoscopic display device capable of performing good stereoscopic display, and a liquid crystal lens cell with a low reflection layer and a sensor substrate with a low reflection layer used therefor. The main purpose.

  In order to achieve the above object, as a result of intensive studies conducted by the present inventors, in a stereoscopic display device including a liquid crystal lens cell, external light reflection on the surface on the viewer side of the liquid crystal lens cell is a stereoscopic display characteristic. For the first time, it has been found that it has a great influence on the decrease in the thickness of the film, and the present invention has been completed.

  That is, the present invention includes a display device, a liquid crystal lens cell disposed on the viewer-side surface of the display device, and a low-reflection layer disposed on the viewer-side surface of the liquid crystal lens cell. A stereoscopic display device is provided.

  According to the present invention, it is possible to provide a stereoscopic display device capable of performing good stereoscopic display by having a low reflection layer.

  In the above invention, the low reflective layer may be disposed on the low reflective layer substrate or the sensor substrate. The liquid crystal lens cell and the low reflection layer can be formed in separate steps, and the manufacturing method of the stereoscopic display device can be simplified.

  In the said invention, it is preferable that the said low reflection layer is arrange | positioned at the outermost surface at the side of the observer of the said stereoscopic display apparatus. This is because reflection of external light on the outermost surface of the stereoscopic display device can be more effectively suppressed, and better stereoscopic display can be performed.

  The present invention provides a liquid crystal lens cell with a low reflection layer, comprising: a liquid crystal lens cell; and a low reflection layer disposed on a viewer-side surface of the liquid crystal lens cell.

  According to the present invention, by having the low reflection layer, it is possible to provide a liquid crystal lens cell with a low reflection layer capable of performing good stereoscopic display when a stereoscopic display device is obtained.

  The present invention is used in a stereoscopic display device including a display device and a liquid crystal lens cell disposed on a viewer-side surface of the display device, and is disposed on a viewer-side surface of the liquid crystal lens cell. There is provided a sensor substrate with a low reflection layer, comprising: a sensor substrate; and a low reflection layer disposed on a surface of the sensor substrate on an observer side.

  According to the present invention, by having the low reflection layer, it is possible to provide a sensor substrate with a low reflection layer capable of performing good stereoscopic display when the stereoscopic display device having the above configuration is provided.

  In the stereoscopic display device of the present invention, there is an effect that it is possible to perform good stereoscopic display.

It is a schematic sectional drawing which shows an example of the stereoscopic display apparatus of this invention. It is a schematic sectional drawing which shows an example of the liquid crystal lens cell with a low reflection layer of this invention. It is a schematic sectional drawing which shows the other example of the liquid crystal lens cell with a low reflection layer of this invention. It is a schematic sectional drawing which shows the other example of the liquid crystal lens cell with a low reflection layer of this invention. It is a schematic sectional drawing which shows the other example of the liquid crystal lens cell with a low reflection layer of this invention. It is a schematic sectional drawing which shows an example of the sensor board | substrate with a low reflection layer of this invention, and another example.

  Details of the stereoscopic display device of the present invention, the liquid crystal lens cell with a low reflection layer, and the sensor substrate with a low reflection layer used therein will be described.

A. Stereoscopic display device The stereoscopic display device of the present invention is disposed on a display device, a liquid crystal lens cell disposed on a viewer-side surface of the display device, and a viewer-side surface of the liquid crystal lens cell. And a low reflection layer.

The stereoscopic display device of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic sectional view showing an example of a stereoscopic display device of the present invention. As shown in FIG. 1, the stereoscopic display device 1 includes a display device 2, a liquid crystal lens cell 3 disposed on the surface of the display device 2 on the viewer side, and a surface of the liquid crystal lens cell 3 on the viewer side. And a low reflection layer 4 disposed on the substrate.

  According to the present invention, by having the low reflection layer, a stereoscopic display device capable of good stereoscopic viewing with the naked eye can be obtained.

A stereoscopic display device using a liquid crystal lens cell is difficult to perform sufficient stereoscopic display and has not yet been put into practical use. In addition, the stereoscopic display device has a problem that the stereoscopic display characteristic is low particularly in a bright environment such as outdoors.
As a result of diligent research on the practical application of a stereoscopic display device using a liquid crystal lens cell, the present inventors have found that the reflection of external light on the surface of the liquid crystal lens cell in the stereoscopic display device greatly affects the deterioration of the stereoscopic display characteristics. I found out.
Although this reason is not necessarily clear, it is guessed as follows.
Here, in the stereoscopic display device including the display device and the liquid crystal lens cell arranged on the viewer side of the display device, the transmitted light from the display device can easily pass through the liquid crystal lens cell, and the stereoscopic display can be favorably performed. Is expected. However, since the liquid crystal lens cell does not require a polarizing plate, external light is likely to be reflected on the surface of the liquid crystal lens cell while the transmitted light from the display device is easily transmitted. Therefore, since both the display light for transmitting the liquid crystal lens cell from the display device to form a stereoscopic display and the reflected light of the outside light are mixed and observed by the observer, it is assumed that the stereoscopic display characteristics are deteriorated. The
On the other hand, in the present invention, since the low reflection layer is disposed on the surface of the liquid crystal lens cell on the viewer side, it is possible to suppress external light reflection on the surface of the liquid crystal lens cell on the viewer side. . Therefore, in the stereoscopic display apparatus of this invention, it is guessed that the fall of the stereoscopic display characteristic by external light reflection can be suppressed.

  Here, in a stereoscopic display device provided with a parallax barrier substrate, a pair of polarizing plates is usually disposed and used on the surface of the parallax barrier substrate. The polarizing plate has a function of suppressing light reflection. Therefore, in a stereoscopic display device provided with a parallax barrier substrate, the influence of external light reflection on the deterioration of stereoscopic display characteristics is small. Therefore, in the stereoscopic display device including the parallax barrier substrate, it is considered that the problem of deterioration of the stereoscopic display characteristics due to the reflection of external light has not been realized.

  That is, the problem in the present invention is a problem peculiar to a stereoscopic display device having a liquid crystal lens cell, and the relationship between external light reflection and stereoscopic display characteristics has been found for the first time this time.

  Hereinafter, each configuration of the stereoscopic display device of the present invention will be described.

1. Low Reflective Layer The low reflective layer in the present invention is disposed on the surface on the viewer side of the liquid crystal lens cell, and has a function of suppressing a reduction in stereoscopic display characteristics due to reflection of external light in a stereoscopic display device. Is.

(1) Arrangement The low reflection layer only needs to be arranged on the surface on the viewer side of the liquid crystal lens cell. As shown in FIG. 2, the surface on the viewer side of the transparent substrate 31 b included in the liquid crystal lens cell 3. The liquid crystal lens cell may be arranged by forming the low reflection layer 4 directly on the liquid crystal lens cell as shown in FIGS. 3 (a), 3 (b), 4 (a), 4 (b) and FIG. The low reflection layer 4 may be disposed on the surface on the viewer side of the transparent substrate 31b included in 3 via another layer or another configuration.
2, 3 (a), 3 (b), 4 (a), 4 (b), and 5 are schematic cross-sectional views for explaining the arrangement of the low reflection layer and the liquid crystal lens cell in the present invention.

  In the case where the low reflection layer is disposed on the surface of the observer side of the transparent substrate included in the liquid crystal lens cell via another layer or another configuration, FIG. When the low reflection layer 4 is formed on the low reflection layer substrate 5 as shown in FIG. 4B, or when the low reflection layer 4 is formed as a sensor substrate as shown in FIGS. 7 is a sensor substrate 20 with a low reflection layer disposed on the substrate 7. In the following description, a laminated body of a low reflection layer and a low reflection layer substrate may be referred to as a substrate with a low reflection layer.

  When a substrate with a low reflection layer is used in the present invention, as shown in FIG. 3A, the liquid crystal lens cell 3 and the substrate for low reflection layer 5 may be disposed so as to face each other. ), The liquid crystal lens cell 3 and the low reflection layer 4 may be arranged to face each other, but the liquid crystal lens cell 3 and the low reflection layer substrate 5 are arranged to face each other. Is more preferable. This is because the low reflection layer can be disposed on the outermost surface on the viewer side of the stereoscopic display device, and thus the deterioration of the stereoscopic display characteristics due to reflection of external light can be more effectively suppressed.

  When the above-described sensor substrate with a low reflection layer is used in the present invention, although not shown, the liquid crystal lens cell and the low reflection layer may be arranged to face each other, as shown in FIGS. 4 (a) and 4 (b). As described above, the liquid crystal lens cell 3 and the sensor substrate 7 may be disposed so as to face each other, but it is more preferable that the liquid crystal lens cell 3 and the sensor substrate 7 are disposed so as to face each other. This is because the low reflection layer can be disposed on the outermost surface on the viewer side of the stereoscopic display device, and thus the deterioration of the stereoscopic display characteristics due to reflection of external light can be more effectively suppressed.

  In the present invention, as shown in FIG. 5, a sensor substrate 20 with a low reflection layer may be used as the sensor substrate 20 with a low reflection layer.

  When the low-reflection layer is formed on the low-reflection layer substrate or the sensor substrate, the low-reflection layer is on the surface on the viewer side of the low-reflection layer substrate or the sensor substrate and on the side opposite to the viewer side. It may be formed on both sides of the surface of the. This is because the reflection on both surfaces can be suppressed and visibility can be improved as compared with the case where a low reflection layer having the same characteristics is provided on one surface.

  In the present invention, it is preferable that the low reflection layer is disposed on the outermost surface on the observer side of the stereoscopic display device. This is because reflection of external light on the outermost surface of the stereoscopic display device can be more effectively suppressed, and better stereoscopic display can be performed.

In the present invention, as shown in FIGS. 3 (a), 3 (b), 4 (a), 4 (b) and 5, the liquid crystal lens 3 and the substrate with the low reflection layer or the sensor substrate with the low reflection layer are used. 20 is disposed through the adhesive layer 6.
As shown in FIGS. 3A and 4A, the adhesive layer 6 may be formed on the entire surface of the facing surface between the liquid crystal lens 3 and the substrate with a low reflection layer or the sensor substrate 20 with a low reflection layer. 3 (b), FIG. 4 (b), and FIG. 5, the liquid crystal lens cell 3 and the low reflection layer 4 or the sensor substrate 20 with the low reflection layer are formed in the periphery of the liquid crystal lens cell 3. An air layer d may be formed between the reflective layer 4 and the sensor substrate 20 with a low reflective layer.
The adhesive layer is not particularly limited as long as it is made of a transparent material. For example, silicone rubber and ethylene propylene rubber described in Japanese Patent No. 3611234, and International Publication No. 2006/006265. Mixtures of the described carboxylic acid modified thermoplastic elastomers, carboxylic acid unmodified thermoplastic elastomers and plasticizers can be used.

(2) Type The low reflection layer used in the present invention is not particularly limited as long as it can suppress deterioration of stereoscopic display characteristics due to reflection of external light by disposing it on the surface on the viewer side of the liquid crystal lens cell. Examples of the low reflection layer include a light interference layer, a light absorption layer, and a light scattering layer. Each will be described below.

(A) Optical interference layer The optical interference layer suppresses reflection of external light by changing the refractive index of light incident on the optical interference layer to cause interference.

(I) Antireflection layer The antireflection layer is constituted by laminating a low refractive index layer and a high refractive index layer having different refractive indexes. The antireflection layer is also referred to as an anti-reflection layer (AR) layer.
The refractive index of the low refractive index layer is preferably in the range of 1.2 to 1.5, for example. Moreover, as a refractive index of a high refractive index layer, it is preferable to exist in the range of 1.5-2.5, for example.

  “Refractive index” refers to a refractive index with respect to light having a wavelength of 550 nm. The method for measuring the refractive index is not particularly limited, and examples thereof include a method of calculating from a spectral reflection spectrum, a method of measuring using an ellipsometer, and an Abbe method. An example of the ellipsometer is UVSEL manufactured by Joban-Evon. Specifically, the refractive index can be measured with DF1030R manufactured by Techno Synergy.

The antireflection layer may be composed of an inorganic material, may be composed of an organic material, or may be composed of a combination of an inorganic material and an organic material.
The low refractive index layer and the high refractive index layer can be the same as those used for a general antireflection layer. For example, JP 2008-243154 A, JP 2012-150226 A, JP Examples thereof include a low refractive index layer and a high refractive index layer described in JP2013-142830A and JP2013-142817A.
The thickness of the low refractive index layer varies depending on the refractive index, but is preferably in the range of 50 nm to 200 nm.
Further, the thickness of the high refractive index layer is preferably in the range of 50 nm to 200 nm although it varies depending on the refractive index.

  “Thickness” refers to the thickness obtained by a general measurement method. Thickness measurement methods include, for example, a stylus type method of calculating the thickness by tracing the surface with a stylus and detecting an unevenness, an optical method of calculating the thickness based on the spectral reflection spectrum, etc. Can do. Specifically, the thickness can be measured using a stylus thickness meter P-15 manufactured by KLA-Tencor Corporation. In addition, as thickness, the average value of the thickness measurement result in the several location of the member used as object may be used.

As a method for forming the antireflection layer, a known method can be used. When an inorganic material is used, for example, a sputtering method, an ion plating method, a PVD method such as a vacuum deposition method, a CVD method, or the like can be given.
When using an organic material, the method of apply | coating and hardening a curable resin composition can be mentioned, for example. Examples of the application method include a method of applying a curable resin composition to the entire area of the transparent substrate such as a die coating method, a spin coating method, a dip coating method, and a roll coating method, and a curable resin on a transparent substrate such as an inkjet method. Examples thereof include a method for discharging the composition, a gravure printing method, an offset printing method, a printing method such as a silk screen printing method, and the like. After application of the curable resin composition, it may be dried to remove the solvent.
The curing method varies depending on the type of the resin component, and examples thereof include irradiation with ionizing radiation such as heat or ultraviolet rays or electron beams. When the coating film is cured, an inert gas atmosphere, for example, a nitrogen gas atmosphere is preferably used in order to suppress the inhibition of curing by oxygen. Moreover, as curing conditions, for example, conditions described in JP2013-142817A, JP2012-150226A, and the like can be applied.

(Ii) Fine concavo-convex layer Examples of the fine concavo-convex layer include a resin layer having periodic fine concavo-convex shorter than the wavelength of light such as a moth-eye structure on the surface. Examples of the fine concavo-convex layer and the method for forming the same include the antireflection layer and the method for forming the same described in Japanese Patent Application Laid-Open No. 2012-128168.

(B) Light absorption layer A light absorption layer is a layer which suppresses external light reflection by absorbing a part of light which injected into the light absorption layer. Further, the light absorption layer is usually colored gray.

As a light absorption layer, the layer containing a coloring material and binder resin can be mentioned. As the color material, for example, a black color material such as carbon black, or a mixture of a red pigment, a green pigment, and a blue pigment can be used. Moreover, a general resin material can be used as the binder resin.
The thickness of the light absorption layer can be appropriately selected according to the application of the stereoscopic display device of the present invention, and is not particularly limited. For example, the thickness is 0.1.mu.m to 10 .mu.m. It is preferable to be in the range of 5 μm to 7.0 μm, particularly in the range of 1.0 μm to 5.0 μm.

The average transmittance in the visible light region of the light absorbing layer is not particularly limited as long as external light reflection can be suppressed, but it is in the range of 50% to 98%, in particular in the range of 50% to 90%, particularly 60. It is preferable to be in the range of 80% to 80%. If the average transmittance in the visible light region of the light absorption layer is small, it may be difficult to sufficiently suppress external light reflection. If the average transmittance in the visible light region of the light absorption layer is large, display is performed. This is because light emitted from the apparatus is easily absorbed, and it may be difficult to perform stereoscopic display.
The average transmittance in the visible light region of the light absorbing layer is a value obtained by averaging the transmission spectrum of the light absorbing layer over the entire visible light region (380 nm to 780 nm). Moreover, the average transmittance | permeability of the visible region of the said light absorption layer can be calculated | required with a general measuring method, for example, can obtain | require by measuring using microspectroscope OSP-SP2000 (made by OLYMPUS). it can.

  As a formation method of a light absorption layer, it can form by apply | coating the resin composition containing the color material mentioned above and binder resin. The coating method can be the same as the coating method described in the section of the antireflection layer described above, and thus the description thereof is omitted here.

(C) Light-scattering layer A light-scattering layer is a layer which has the function to suppress external light reflection by scattering the light which injected into the light-scattering layer.
As a light-scattering layer, what disperse | distributed microparticles | fine-particles in the resin layer can be used, For example, the light-scattering functional layer described in Unexamined-Japanese-Patent No. 2014-071187 can be used.

(D) Others The low reflection layer in the present invention is preferably a light interference layer or a light absorption layer, and particularly preferably a light interference layer. This is because the light interference layer has a high effect of suppressing external light reflection, and the stereoscopic display device of the present invention can more effectively suppress a reduction in stereoscopic display due to external light reflection.

(3) Low Reflective Layer Substrate In the present invention, the low reflective layer 4 may be disposed on the low reflective layer substrate 5 as shown in FIGS. In this case, the low reflection layer is usually formed and disposed directly on the low reflection layer substrate.

As the low reflection layer substrate, a transparent substrate is usually used.
The material of the transparent substrate may be a highly rigid material such as chemically tempered glass, soda glass, quartz glass, non-alkali glass or the like, but in the case of a flexible liquid crystal lens cell It is preferably a flexible material such as resins such as polycarbonate, polyacrylic acid ester, polymethacrylic acid ester, other inorganic materials, and combinations thereof. This is because a liquid crystal lens cell having flexibility and a stereoscopic display device having flexibility can be easily obtained.
About the film thickness etc. of the said transparent substrate, it can select suitably according to the use etc. of the stereoscopic display apparatus of this invention.

(4) Sensor Substrate In the present invention, the low reflection layer 4 may be disposed on the sensor substrate 7 as shown in FIGS. 4 (a), (b), and FIG. 5. In this case, as shown in FIGS. 6A to 6C, the low reflection layer 4 may be directly formed on the sensor substrate 7. In addition, as shown in FIG. 6D, the sensor substrate 7 may be bonded to the sensor substrate 7 with the low reflection layer 4 formed on the low reflection layer substrate 5 described above.

As shown in FIGS. 6A to 6D, the sensor substrate 7 usually has a support substrate 71 and a sensor 72 formed on the support substrate 71. When the low reflection layer 4 is directly formed on the sensor substrate 7, for example, as shown in FIG. 6A, the low reflection layer 4 may be formed on the surface on which the sensor 72 is formed. As shown in FIG. 6B, the low reflection layer 4 may be formed on the surface opposite to the surface on which the sensor 72 is formed. In addition, as shown in FIG. 6C, when the sensors 72 are formed on both surfaces of the support substrate 71, the low reflection layer 4 is usually formed on the surface on which one sensor 72 is formed. .
6A to 6D are schematic cross-sectional views showing an example and another example of a sensor substrate with a low reflection layer used in the present invention.

The function of the sensor can be appropriately selected according to the application of the stereoscopic display device of the present invention, and is not particularly limited. Examples thereof include a contact-type electric sensor function, an infrared sensor, an optical sensor, and a touch panel sensor. be able to.
The specific sensor configuration can be general.
Moreover, the transparent substrate mentioned above can be used as a support substrate.

2. Liquid crystal lens cell The liquid crystal lens cell in the present invention is disposed on the surface of the display device on the viewer side.

The liquid crystal lens cell provides a lenticular lens function by changing the orientation of liquid crystal molecules in the liquid crystal layer by applying an electric field in the liquid crystal layer, thereby displaying a left eye image and a right eye image displayed on the display device. To enable autostereoscopic viewing.
Such a liquid crystal lens cell has a transparent substrate having two electrode layers and a liquid crystal layer formed between the two transparent substrates, as described in Patent Document 3 and Patent Document 4, for example. Can be used.
More specifically, as illustrated in FIG. 2 and the like, a liquid crystal in which a transparent substrate 31a, an electrode layer 32a, an alignment layer 33a, a liquid crystal layer 34, an alignment layer 33b, an electrode layer 32b, and a transparent substrate 31b are stacked in this order. Those having a cell structure can be used. Further, it is possible to use one having a spacer 35 that fixes the thickness between the two transparent substrates (31a and 31b) and maintains the gap of the liquid crystal layer 34 constant. In FIG. 2, normally, the transparent substrate 31a is disposed so as to face the display device.
In addition, the thickness of the liquid crystal layer used in the liquid crystal lens cell is not particularly limited as long as it enables accurate autostereoscopic viewing. For example, the thickness is in the range of 30 μm to 100 μm. can do.

  The liquid crystal lens cell is preferably flexible. The stereoscopic display device of the present invention can be made flexible, and is useful in realizing a display device that is light and difficult to break, and can be applied to various applications such as application to curved surfaces. This is because it has the advantage of spreading.

3. Display Device The display device in the present invention is not particularly limited as long as it can display a left eye image and a right eye image. Examples of the display device include a transmissive liquid crystal display device, an organic electroluminescence display device (hereinafter, organic electroluminescence may be referred to as an organic EL), a MEMS display, and the like.

As the liquid crystal display device, a general liquid crystal display device can be used. For example, a front substrate in which a color filter layer, a transparent electrode layer, and an alignment film are sequentially formed above a transparent substrate, and a back electrode above the substrate. Examples include a liquid crystal layer disposed between a back substrate on which layers and an alignment film are sequentially formed. Further, a TFT, a backlight, or the like may be formed in the liquid crystal display device.
Each member constituting the liquid crystal display device can be the same as that of a general liquid crystal display device.
As a display method of the liquid crystal display device, a transmissive or transflective display method is usually used.

As the organic EL display device, a general organic EL display device can be used, for example, a transparent substrate, a transparent electrode layer formed above the transparent substrate, formed above the transparent electrode layer, and at least emitting light. Examples thereof include an organic EL layer including a layer, a back electrode layer formed above the organic EL layer, and a sealing substrate disposed above the back electrode layer. In addition, an insulating layer, a partition wall, a TFT, and the like may be formed in the organic EL display device.
Each member constituting the organic EL display device can be the same as that of a general organic EL display device.

4). Others The manufacturing method of the stereoscopic display device of the present invention is not particularly limited as long as the stereoscopic display device having the above-described configuration can be manufactured, and can be the same as the manufacturing method of a known display device.

  As a use of the stereoscopic display device of the present invention, for example, a television, a portable game machine, a portable terminal, a smartphone, a digital signage, and the like can be given. In particular, the stereoscopic display device of the present invention is preferably one that can be used outdoors. This is because the function of the stereoscopic display device of the present invention can be enhanced.

B. Liquid crystal lens cell with low reflection layer The liquid crystal lens cell with low reflection layer of the present invention comprises a liquid crystal lens cell and a low reflection layer disposed on the surface of the liquid crystal lens cell on the viewer side. Is.

The liquid crystal lens cell with a low reflection layer of the present invention will be described with reference to the drawings.
2, FIG. 3 (a), (b), FIG. 4 (a), (b) and FIG. 5 are schematic sectional views showing one example and another example of the liquid crystal lens cell with a low reflection layer of the present invention. As shown in FIG. 2 etc., the liquid crystal lens cell 10 with a low reflection layer of the present invention has a liquid crystal lens cell 3 and a low reflection layer 4 disposed on the surface of the liquid crystal lens cell 3 on the viewer side. It is characterized by this. The details of FIG. 2, FIG. 3 (a), (b), FIG. 4 (a), (b), and FIG. 5 are the same as those described in the section “A. Stereoscopic display device” described above. Therefore, the description here is omitted.

  According to the present invention, by having the low reflection layer, it is possible to provide a liquid crystal lens cell with a low reflection layer capable of performing good stereoscopic display when a stereoscopic display device is obtained.

  Since the low reflection layer and the liquid crystal lens cell in the liquid crystal lens cell with a low reflection layer of the present invention can be the same as the contents described in the above-mentioned section “A. Stereoscopic display device”, the description here is as follows. Omitted.

C. Sensor substrate with a low reflection layer The sensor substrate with a low reflection layer of the present invention is used in a stereoscopic display device comprising a display device and a liquid crystal lens cell disposed on the surface of the display device on the viewer side. The liquid crystal lens cell is disposed on the surface on the viewer side and has a sensor substrate and a low reflection layer disposed on the surface on the viewer side of the sensor substrate. is there.

The sensor substrate with a low reflection layer of the present invention will be described with reference to the drawings.
6A to 6D are schematic cross-sectional views showing an example and another example of the sensor substrate with a low reflection layer of the present invention. As shown in FIGS. 6A to 6D, the sensor substrate 20 with a low reflection layer of the present invention includes the sensor substrate 7 and the low reflection layer 4 disposed on the sensor substrate 7. The details of FIGS. 6A to 6D can be the same as the contents described in the section “A. Stereoscopic display device” described above, and thus the description thereof is omitted here.
The sensor substrate with a low reflection layer according to the present invention is used in a stereoscopic display device including a display device and a liquid crystal lens cell disposed on a viewer side surface of the display device. Is. In addition, the sensor substrate 20 with a low reflection layer of the present invention is disposed on the surface of the liquid crystal lens cell 3 on the viewer side as shown in FIGS. 4 (a), 4 (b) and FIG. .

  According to the present invention, by having the low reflection layer, it is possible to provide a sensor substrate with a low reflection layer capable of performing good stereoscopic display when the stereoscopic display device having the above configuration is provided.

  The low reflection layer and the sensor substrate in the present invention can be the same as the contents described in the above-mentioned section “A. Stereoscopic display device”, and thus the description thereof is omitted here.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

  Hereinafter, the present invention will be described in more detail with reference to examples.

[Example 1]
<Production of liquid crystal display device>
A liquid crystal cell was produced by the following procedure.
First, a color filter substrate in which a predetermined black matrix was formed on a glass substrate (AN100, manufactured by Asahi Glass Co., Ltd.) and an RGB coloring pattern was formed in the opening thereof was prepared. Next, a protective layer was formed on the glass substrate on which the black matrix and the RGB coloring pattern were formed. Thereafter, a photo spacer was formed at a predetermined position. After forming a bank with a sealing material on the color filter substrate, IPS liquid crystal was dropped in a vacuum and bonded to the TFT substrate and sealed. Then, the polarizing plate was arrange | positioned in the predetermined position. Thereby, a liquid crystal cell was obtained.

Next, a backlight unit was produced according to the following procedure.
A plurality of elements including BLUE-LEDs and YAG phosphors are arranged at one end of the light guide plate. Next, a brightness enhancement film (DBEF-D2-550, manufactured by 3M) was placed on the light guide plate so that the front brightness was maximized. Thereby, a backlight unit was obtained.

  The liquid crystal cell and the backlight unit were set in a predetermined housing to produce a liquid crystal display device.

<Production of liquid crystal lens cell>
A liquid crystal lens cell was obtained by the following procedure.
After forming ITO (thickness 1000 mm) on the entire surface of the glass substrate, the light shielding layer was formed by patterning. Thereafter, a photospacer (height 50 μm) was formed on the light shielding layer. A bank was formed with a sealing material on the glass substrate on which the ITO, the light shielding layer, and the photospacer were formed, and then TN liquid crystal was dropped in a vacuum and bonded to the TFT substrate for sealing. Thereby, a liquid crystal lens cell was obtained.

<Production of substrate with low reflection layer>
The board | substrate with a low reflection layer was produced with the following procedures.
A tempered glass substrate (Dragon Trail, manufactured by Asahi Glass Co., Ltd.) was prepared as a substrate for the low reflection layer. Next, an anchor layer (film thickness 5 μm, refractive index 1.51), high refractive index layer (film thickness 150 nm, refractive index 1.65), low refractive index layer (film thickness 100 nm, refractive index) on the tempered glass substrate. 1.35) were sequentially formed to obtain a substrate with a low reflection layer. In addition, the said refractive index is a refractive index with respect to the light of wavelength 550nm.

<Preparation of a liquid crystal lens display device with a low reflection layer>
The liquid crystal display device, the liquid crystal lens cell, and the low reflection layer substrate were bonded in this order with an optical elastic resin to obtain a liquid crystal lens display device with a low reflection layer. At this time, the low reflection layer was placed on the viewer side.

[Example 2]
An x-scanning line (ITO: thickness 1000 mm), an insulating layer (thickness 2 μm), and a y-scanning line (ITO: thickness 1000 mm) are formed on the surface of the substrate with a low reflection layer opposite to the surface on which the low-reflection layer is formed. A liquid crystal lens display device with a low reflection layer was obtained in the same manner as in Example 1 except that a capacitive touch panel sensor substrate was produced.

[Example 3]
The low reflection layer was directly formed on the viewer side of the substrate constituting the liquid crystal lens cell, and the liquid crystal lens display device with a low reflection layer was produced using the liquid crystal display device and the liquid crystal lens cell. A liquid crystal lens display device with a low reflection layer was obtained.

[Example 4]
A liquid crystal with a low reflection layer is provided in the same manner as in Example 1 except that a sealing tape is provided on the outer periphery of the liquid crystal lens cell and the low reflection layer substrate, and an air gap is provided between the liquid crystal lens cell and the low reflection layer substrate. A lens display device was obtained. At this time, the low reflection layer was placed on the side opposite to the observer side.

[Example 5]
A liquid crystal lens display device with a low reflection layer was obtained in the same manner as in Example 4 except that low reflection layers were provided on both surfaces of the low reflection layer substrate.

[Comparative example]
A liquid crystal lens display device was obtained in the same manner as in Example 1 except that the low reflective layer was not provided on the low reflective layer substrate.

<Evaluation>
The visibility of stereoscopic vision was evaluated by visual evaluation. In the stereoscopic display device of the comparative example, the displayed stereoscopic image was observed in a blurred manner (image blur occurred), but in the first to fifth embodiments, the displayed stereoscopic image was observed without being blurred. (Image blur did not occur). The results are shown in Table 1. In Table 1, the case where the image blur occurs is indicated by x, and the case where the image blur does not occur is indicated by ◯.

DESCRIPTION OF SYMBOLS 1 ... Stereoscopic display apparatus 2 ... Display apparatus 3 ... Liquid crystal lens cell 4 ... Low reflection layer 5 ... Low reflection layer substrate 6 ... Adhesion layer 7 ... Sensor substrate 10 ... Low reflection layer-equipped liquid crystal lens cell 20 ... With low reflection layer Sensor board

Claims (5)

A display device;
A liquid crystal lens cell disposed on the viewer-side surface of the display device;
A stereoscopic display device comprising: a low-reflection layer disposed on a surface on the viewer side of the liquid crystal lens cell.   The stereoscopic display device according to claim 1, wherein the low reflective layer is disposed on a low reflective layer substrate or a sensor substrate.   The stereoscopic display device according to claim 1, wherein the low reflection layer is disposed on an outermost surface on the viewer side of the stereoscopic display device. A liquid crystal lens cell;
A liquid crystal lens cell with a low reflection layer, comprising: a low reflection layer disposed on a viewer-side surface of the liquid crystal lens cell. A low reflection layer used in a stereoscopic display device including a display device and a liquid crystal lens cell disposed on a viewer-side surface of the display device, and disposed on a viewer-side surface of the liquid crystal lens cell Sensor board with
A sensor substrate;
A sensor substrate with a low reflection layer, comprising: a low reflection layer disposed on a surface of the sensor substrate on an observer side.

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