JP2009093200A - Display device, electronic device having display device, and method for manufacturing display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device and an electronic device having the display device capable of improving the strength of a touch panel and thinning the display device. <P>SOLUTION: The display device 14 for displaying images comprises: a liquid crystal display panel 60 for displaying the image; the touch panel 64 arranged with a space 80 between itself and the liquid crystal display panel 60 to allow a user to input instructions by touching it; and a resin filler 90 filled in a region of the space 80 provided between the liquid crystal panel 60 and the touch panel 64 to buffer force applied through the touch panel 64. The resin filler 90 is formed of a polymerizable resin composition, and light transmittance in a wavelength range of 430 nm to 700 nm of the resin filler 90 is 95% or more when the film thickness of the resin filler 90 is 500 μm. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a display device for displaying an image, an electronic apparatus having the display device, and a method for manufacturing the display device .

  The liquid crystal display panel is used for displaying character information, still images, moving images, and the like. Some liquid crystal display panels are provided with a touch panel for allowing a user to input with a finger, for example. FIGS. 9A and 9B show a schematic configuration of an example of such a type of liquid crystal display panel. FIG. 9A is an exploded perspective view and FIG. 9B is a cross-sectional view.

  In the figure, 202 is an LCD (Liquid Crystal Device) frame, 204 is an LCD (Liquid Crystal Device) disposed on the LCD frame 202, 206 is a touch panel (208) to be described below, and spaced apart (for example, The LCD frame 208, which is held in a state of being positioned 0.1mm to 1.2mm), is a touch panel disposed above the LCD 204 by the LCD frame 206 with a spacing of, for example, about 0.1mm to 1.2mm. , 210 is a space provided between the LCD 204 and the touch panel 208. FIG. 10 is a cross-sectional view showing the touch panel 208, the LCD 204, and the space 210 therebetween in more detail.

By the way, the reason why the space 210 is provided between the LCD 204 and the touch panel 208 is to prevent the LCD 204 from bleeding due to the pressure applied to the touch panel 208 by the user for input.
That is, in the structure in which the LCD 204 and the touch panel 208 are in direct contact without providing a space 210 therebetween, when the touch panel 208 is pressurized using the input pen P as shown in FIG. To the LCD 204. Then, a phenomenon occurs in which the liquid crystal in the LCD 208 receives pressure and escapes from the pressurization point around it, and appears as a strong blur.

  Therefore, when the space 210 is provided, the pressure applied to the LCD 208 when the touch panel 208 is pressed using the input pen P can be remarkably reduced, and the bleeding can be reduced. This is the first reason for providing the space 210.

The second reason for providing the space 210 is to prevent Newton rings (moire fringes) from occurring at the interface between the touch panel 208 and the LCD 204. That is, the direct contact between the touch panel 208 and the LCD 204 is nothing but the direct contact between the glass plate 208g of the touch panel 208 and the glass plate 208g of the LCD shown in FIG. The glass plate 208g and the glass plate 208g of the LCD are both finished to have a flat surface with higher flatness, but they are not perfect flat surfaces. The spaces entered are randomly scattered, resulting in Newton rings.
Since this can be seen from the display unit, the quality of the display image is lowered, which is naturally not preferable. Therefore, the space 210 is completely interposed between them. Then, Newton ring does not occur.

It should be noted that such a problem should be solved without providing a means for providing the space 210 if the glass plate 208g of the touch panel 208 and the glass plate 208g of the LCD can be shared by one glass plate. However, this requires that the touch panel 208 and the LCD 204 be integrally formed, which is practically impossible at least at the present time. This is because the process of manufacturing the LCD 204 and the process of manufacturing the touch panel 208 are significantly different in manufacturing conditions, particularly temperature conditions, and it is difficult or impossible to manufacture them integrally.
Therefore, at least with the current technology, it is impossible to use the glass plate 208g of the touch panel 208 and the glass plate 204g of the LCD as a single glass plate, and therefore it is necessary to provide a space 210 between them.

  However, when the air gap 210 is provided between the touch panel 208 and the LCD 204 as described above, the air gap 210 exists between the touch panel 208 and the LCD 204. The touch panel is likely to be cracked and may break down.

  Further, when an air gap 210 is provided between the touch panel 208 and the LCD 204, there is a problem that non-negligible light reflection occurs at the interface between the touch panel 208 and the LCD 204, resulting in poor visibility. This is because the difference in refractive index between the glass plate of the touch panel 208 and air is large, so the difference in refractive index between the glass plate 208g forming the lower part of the touch panel 208 and the glass plate 204g forming the upper part of the LCD 204 is large. This is because reflection occurs at the interface between the glass plate 208g and air and at the interface between the glass plate 204g and air.

  Therefore, the present invention solves the above-mentioned problems, can improve the strength of the touch panel, can reduce the thickness of the display device, and can further reflect light between the touch panel and the liquid crystal display panel. It is an object of the present invention to provide a display device that can be reduced and an electronic device including the display device.

The display device of the present invention is a display device for displaying an image, and is arranged to be spaced from the liquid crystal display panel for displaying an image and to input a command by a user touching the liquid crystal display panel. Touch panel. And it is provided in the area | region of the space | interval provided between the liquid crystal display panel and the touch panel, and while buffering the force added through a touch panel, it irradiated with ultraviolet rays and hardened | cured the polymerizable resin composition through the touch panel. A resin filler is provided.
Moreover, the polymerizable resin composition contains either polybutadiene (meth) acrylate or isoprene (meth) acrylate as a resin component. And when the transparent resin filler which contained the initiator which absorbs visible light as a photoinitiator, and was hardened | cured by irradiating with an ultraviolet-ray when the film thickness of a transparent resin filler is 500 micrometers, wavelength 430nm- The light transmittance in the range of 700 nm is adjusted to 95% or more.

The manufacturing method of the display device of the present invention includes a step of sandwiching one side and the other side of the liquid crystal display panel between the first holding frame and the second holding frame. Moreover, it has the process of providing a space | interval from the display panel of a liquid crystal display panel, and fixing a touch panel to a 1st holding frame, and the process of filling a liquid polymeric resin composition in the space | interval of a display panel and a touch panel. Furthermore, it has a process of irradiating the polymerizable resin composition with ultraviolet rays via a touch panel to cure the polymerizable resin composition to form a resin filler.

Further, in the method for producing a display device of the present invention, a polymerizable resin composition is interposed between a display panel side of a liquid crystal display panel that displays an image and one side of a touch panel facing the liquid crystal display panel, Combining the liquid crystal display panel and the touch panel, and irradiating the polymerizable resin composition with ultraviolet rays via the touch panel to cure the polymerizable resin composition.

In the display device of the present invention and the display device according to the manufacturing method of the present invention , the liquid crystal display panel displays an image. The touch panel is arranged with a space from the liquid crystal display panel, and is used for a user to touch and input a command.
The transparent resin filler is provided in a region having a gap provided between the liquid crystal display panel and the touch panel. This resin filler is basically for buffering the force applied to the liquid crystal display panel side through the touch panel.

  It can be said that the resin filler can improve the strength of the touch panel by preventing the touch panel from cracking without causing image display blur of the liquid crystal display panel and without reducing the light transmittance. In addition, since the distance between the liquid crystal display panel and the touch panel is small, it is effective for reducing the thickness of the display device. Further, the resin filler plays a role of reducing a decrease in visibility due to light reflection between the liquid crystal display panel and the touch panel. This is because the resin filler generally has a refractive index intermediate between the refractive index of air and glass, so that the glass plate forming the liquid crystal display panel or touch panel is in direct contact with the resin filler without air being interposed. In this case, the light reflection between the panels can be made smaller than in the case where the air is interposed between the glass plates as in the prior art, and the reduction in visibility can be reduced.

Further , according to the display device of the present invention , the light transmittance is 95% or more when the resin filler has a film thickness of 500 μm in the wavelength range of 430 nm to 700 nm of the resin filler. Can prevent the touch panel from cracking and improve the strength of the touch panel without causing the image display blur of the liquid crystal display panel and without reducing the light transmittance. In addition, since the distance between the liquid crystal display panel and the touch panel is small, it is effective for reducing the thickness of the display device.

The electronic device of the present invention is an electronic device having a display device for displaying an image. The display device includes a liquid crystal display panel that displays an image, and a touch panel that is arranged at a distance from the liquid crystal display panel and that a user touches to input a command. And it is provided in the area | region of the space | interval provided between the liquid crystal display panel and the touch panel, and while buffering the force added through a touch panel, it irradiated with ultraviolet rays and hardened | cured the polymerizable resin composition through the touch panel. A resin filler is provided.
Moreover, the polymerizable resin composition contains either polybutadiene (meth) acrylate or isoprene (meth) acrylate as a resin component. And when the transparent resin filler which contained the initiator which absorbs visible light as a photoinitiator, and was hardened | cured by irradiating with an ultraviolet-ray when the film thickness of a transparent resin filler is 500 micrometers, wavelength 430nm- The light transmittance in the range of 700 nm is adjusted to 95% or more.

In the electronic apparatus of the present invention , the liquid crystal display panel displays an image. The touch panel is arranged with a space from the liquid crystal display panel, and is used for a user to touch and input a command.
The resin filler is filled in a space area provided between the liquid crystal display panel and the touch panel. This resin filler is for buffering the force applied to the liquid crystal display panel side through the touch panel.

Further, in claim 2 , the resin filler is made of a polymerizable resin composition, and the light transmittance in the wavelength range of 430 nm to 700 nm of the resin filler is when the film thickness of the resin filler is 500 μm. 95% or more.
Accordingly, the light transmittance is 95% or more when the resin filler film thickness is 500 μm in the wavelength range of 430 nm to 700 nm of the resin filler, and therefore the resin filler is used for image display of the liquid crystal display panel. The touch panel can be prevented from cracking and the strength of the touch panel can be improved without reducing the light transmittance without causing bleeding. In addition, since the distance between the liquid crystal display panel and the touch panel is small, it is also effective in reducing the thickness of the display device.

According to the present invention, it is possible to improve the strength of the touch panel while ensuring transparency, to reduce the thickness of the display device, and to reflect light between the touch panel and the liquid crystal display panel. Can be reduced.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.
The embodiment described below is a preferred specific example of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.

FIG. 1 shows a first preferred embodiment of an electronic apparatus having the first embodiment of the display device of the present invention.
An electronic device 10 shown in FIG. 1 is a so-called personal digital assistant (PDA) as an example. The electronic device 10 includes a housing 12 and a display device 14.
FIG. 2 shows the electronic device 10 of FIG. 1 in more detail.
The electronic device 10 in FIG. 1 includes a housing 12, a display device 14, an input device 20, a power key 22, an audio volume adjusting unit 24, a jack 27 for connecting an external earphone, and other functions. Keys 26 and 28 are provided.

The input device 20 in FIG. 1 is for giving coordinate data of the pointer P by operating with a part of an operator (user), for example, a finger F of a hand H. The index finger is used as the finger F in the example of FIG. 1, but the finger F is not limited to this and may be another finger.
In FIG. 2, an example of the information 40 displayed on the display screen 30 of FIG. 1 is displayed. As shown in FIGS. 1 and 2, a pointer P is displayed on the display screen 30. This pointer P is an arrow-shaped pointer.
As shown in FIG. 2, on the display screen 30 of the display device 14, in addition to the pointer P, information 40, keys 44, 46, and 48 for performing various functions are displayed. The key 42 is a key for displaying the keyboard on the display screen 30. The key 44 is a key used for information retrieval. The key 46 is a key for displaying a menu on the display screen 30. The key 48 is a key that can switch the display between English display and Japanese display, for example. These keys 42, 44, 46 and 48 can be operated by touching with the finger F.

2 has a first portion 12A and a second portion 12B. The first portion 12A is also called an upper housing portion, and the second portion 12B is also called a lower housing portion. The first part 12A and the second part 12B are overlapped to form a space therein. In this space, a display device 14, a circuit board, and the like are accommodated.
The casing 12 is made of, for example, plastics such as ABS (acrylonitrile butadiene styrene), PC (polycarbonate), PC + ABS (polycarbonate + acrylonitrile butadiene styrene), PBT (polybutylene terephthalate), PPS (polyphenylene sulfide), and modified PPE (polyfety). Ren ether) and the like.

FIG. 3 shows an example of the structure of the display device 14 housed in the housing 12 shown in FIGS.
The display device 14 is also called a liquid crystal display device, and generally includes a liquid crystal display panel 60, a first holding frame 61, a second holding frame 62, a backlight unit 63, and a touch panel 64.
The liquid crystal display panel 60 has a general structure in which, for example, a liquid crystal layer is sandwiched between an alignment film and a transparent electrode film, and a transparent plate and a polarizing plate are stacked, and various types of liquid crystal display panels can be employed. The liquid crystal display panel 60 and the backlight unit 63 are electrically connected to a substrate (not shown) on which a drive circuit and the like are mounted.
The first holding frame 61 and the second holding frame 62 are frames for holding the liquid crystal display panel 60 in a state of being sandwiched from one side and the other side. The first holding frame 61 and the second holding frame 62 are made of plastic or metal and are, for example, pressed products such as stainless steel and iron.

4 is a cross-sectional view of the housing 12 including the liquid crystal display device 14. The liquid crystal display panel 60 is held between the first holding frame 61 and the second holding frame 62 described above.
As shown in FIG. 3, the first holding frame 61 has, for example, a rectangular opening 70. The opening 70 has a size corresponding to the display area of the liquid crystal display panel 60.

The second holding frame 62 has an opening 71 having the same size as the liquid crystal display panel 60. Therefore, the liquid crystal display panel 60 is in contact with the backlight unit 63.
By inserting the plurality of protrusions 74 of the second holding frame 62 into the plurality of recesses 73 of the first holding frame 61, the first holding frame 61 and the second holding frame 62 sandwich the liquid crystal display panel 60. Can be held in an oval shape.

  The backlight unit 63 has a light source of a fluorescent tube, for example, and guides light from this light source to the back side of the liquid crystal display panel 60 by a light guide plate made of resin or the like. The guided light is diffused by the diffusion sheet, transmitted through the prism sheet, and irradiated from the back side of the liquid crystal display panel 60. By using such a backlight unit 63, the user can see the image displayed on the liquid crystal display panel 60 more clearly.

  The touch panel 64 of FIG. 3 is made by bonding, for example, a glass plate or a polyester film. The touch panel 64 has a rectangular shape corresponding to the display screen 30 of the liquid crystal display panel 60. As shown in FIG. 5, a gap is provided between the touch panel 64 and the display screen 30.

FIG. 5 shows an enlarged portion A of FIG.
A portion A shown in FIG. 5 shows a part of the touch panel 64 and the liquid crystal display panel 60, and a space 80 is provided between the touch panel 64 and the display panel 30 of the liquid crystal display panel 60. The interval 80 is, for example, 0.8 mm, but may be smaller than this. The interval 80 is provided by the first holding frame 61 of FIG. 4 that is an outer frame material. That is, the touch panel 64 is fixed to the first holding frame 61, and a gap 80 is formed between the inner surface of the touch panel 64 and the display screen 30 of the liquid crystal display panel 60.

The space region of the interval 80 is filled with a resin filler 90 as shown in FIGS. The resin filler 90 is also referred to as a photocurable adhesive, and for example, a visible light curable transparent adhesive can be used.
As this resin filler 90, for example, one of SOA 1000 series manufactured by Sony Chemical Corporation can be adopted. The resin filler 90 is a photocurable resin that is filled in the space 80 when the space 80 is an air gap. That is, the resin filler 90 is filled between the touch panel 64 and the display screen 30 of the liquid crystal display panel 60, in which the interval 80 is set by the first holding frame 61 and the second holding frame 62 shown in FIG. For example, it has a function of buffering the force of the finger F applied to the touch surface 64T of the touch panel 64.
This resin filler 90 is made of a polymerizable resin composition, and as shown in FIG. 6, when the light transmittance in the wavelength range of 430 nm to 700 nm of the resin filler 90 is 500 μm, the resin filler 90 has a film thickness of 500 μm. 95% or more.

This polymerizable resin composition contains, as a resin component, polybutadiene-based (meth) acrylate, isoprene-based (meth) acrylate, and a photoinitiator.
This resin component contains urethane (meth) acrylate, polybutadiene (meth) acrylate, and isoprene (meth) acrylate.
The photoinitiator includes a photoinitiator that absorbs in the visible region.
The photoinitiator is, for example, a phosphine oxide-based initiator. The phosphine oxide initiator is bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide or bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide. is there.
The photoinitiator may also be 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1.

  The resin filler 90 described above is also called a buffer filler or a resin cushion. The resin filler has high transparency from the viewpoint of visibility, has flexibility from the viewpoint of mitigating the impact on dropping and pressing, and is liquid at the time of manufacture in order to fill in the separated area. In order to satisfy these many requirements, a polymerizable resin composition containing a resin component containing a monomer and an oligomer and a photoinitiator that can be formulated according to the required properties is preferable.

  Specific examples of the resin component of the polymerizable resin composition include (meth) acrylate having an alicyclic structure and a rubber component from the viewpoint of imparting flexibility from the viewpoint of maintaining high transparency. Among these, preferred are polybutadiene-based (meth) acrylates having a polybutadiene skeleton and isoprene-based (meth) acrylates having an isoprene skeleton, which have both relatively high transparency and flexibility.

The photoinitiator can be selected in consideration of the manufacturing process of the display device 14 according to the present invention.
That is, particularly when the touch panel 64 can be quickly placed on the outer frame material after the polymerization is started by irradiating ultraviolet rays or the like to the acrylate or the like which is a base material of the resin buffer material, Initiators can be used without limitation.
However, such a method requires skill for an operator, and therefore, the manufacturing process is stabilized by irradiating ultraviolet rays or the like through the touch panel after the touch panel 64 is placed on the outer frame material.
In this case, the touch panel 64 itself is not opaque, but has a certain thickness, so that the polymerization rate may not be sufficient unless the light intensity such as ultraviolet rays is increased.

  Therefore, in the present invention, a so-called visible light initiator that absorbs in the visible region and starts polymerization at the visible region wavelength can be preferably used. Specific examples of the visible light initiator include bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide, bis (2,4,6-trimethylbenzoyl) -phenylphosphine. Examples thereof include phosphine oxide photoinitiators such as oxide and 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1.

Next, the resin buffer material 90 made of the polymerizable resin composition is blended so that the light transmittance at a wavelength of 430 nm to 700 nm is 95% or more when the film thickness of the resin buffer material 90 is 500 μm. To do.
Thus, if the light transmittance at a wavelength of 430 nm to 700 nm of the resin buffer material 90 is 95% or more when the film thickness of the resin buffer material 90 is 500 μm, blurring of image display on the liquid crystal display panel is caused. The touch panel 64 can be prevented from cracking and the strength of the touch panel can be increased without occurring and without reducing the light transmittance. In addition, since the size of the gap 80 can be reduced to, for example, 0.8 mm or less, it can contribute to a reduction in the thickness of the display device 14 itself.
The resin cushioning material 90 is filled in the interval 80 shown in FIG. 5 and cured by, for example, irradiating ultraviolet rays from the R side of the touch panel 64.

  According to the experiment results of the present inventor, the touch panel is static for a display device having a conventional air gap interval and a display device in which the interval 80 is filled with the resin filler 90 as in the embodiment of the present invention. When the strength was compared with the load, an effect of about twice was obtained. Even when the conventional display device and the display device according to the embodiment of the present invention were compared in terms of light transmittance, there was no difference between the two.

It was confirmed that the bleeding of the image display on the display screen 30 of the liquid crystal display panel 60 did not occur even when the resin filler 90 was present.
The touch panel 64 is cracked when the touch panel 64 is more than a certain amount of variation, but due to the presence of the resin filler 90 that is a photocurable resin, the strength of the touch panel 64 when pressed from the R direction is increased. Can be up.

As a matter of course, by making the layer of the resin filler 90 thinner, it is possible to make the size of the interval 80 smaller than before and to obtain a certain level of strength of the touch panel 64. Accordingly, the overall thickness of the display device 14 can be reduced.
The resin filler 90 according to the embodiment of the present invention can be easily separated from the display screen 30 made of glass, for example, and this resin filler 90 can be collected as a single item when the display device 14 is recycled. For this reason, the environment is also considered.

As described above, in the electronic device having the display device and the display device of the present invention, by filling, for example, the ultraviolet curable resin filler 90 between the touch panel 64 and the display screen 30 of the liquid crystal display panel 60, light The strength of the touch panel 64 can be increased by preventing the touch panel 64 from cracking due to impact or the like without reducing the transmittance.
When the electronic device and the display device 14 are recycled or disassembled, the resin filler 90 can be separated from the glass display screen 30 and the touch panel 64, so that the resin filler 90 can be recovered as a single item. There is consideration for the environment.

  FIGS. 7A and 7B show a schematic configuration of the second embodiment of the present invention. FIG. 7A is an exploded perspective view, FIG. 7B is a sectional view, and FIG. It is sectional drawing which shows LCD and the resin filler interposed between it in more detail.

  7 and 8, reference numeral 102 denotes an LCD (liquid crystal device) frame, 104 denotes an LCD disposed on the LCD frame 102, and 106 denotes a touch panel (108) described below, which is separated from the upper side of the LCD 104 (for example, 0). .1 mm to 1.2 mm) and the LCD frame 108 held in a positioned state is arranged above the LCD 102 by the LCD frame 106 and a resin filler 110 having a thickness of about 1.0 mm, for example. It is a touch panel.

The resin filler 110 is made of, for example, a special synthetic rubber transparent paint by clear (trade name, manufactured by Hibee Coat Co., Ltd.).
For example, the resin filler 110 made of, for example, a special synthetic rubber transparent paint Biclear has high transparency, so that the visibility of the LCD screen necessary for the display device is not lowered. Moreover, since it has rubber elasticity, the load applied to the LCD 104 when pressure is applied to the touch panel 108 for inputting characters or the like with the pen P can be relaxed, and the mechanical strength is substantially improved. It can be said that it can.

  Since the refractive index of the resin filler 110 is larger than that of air and close to that of the glasses 104g and 108g, a space (210) is formed between the touch panel (208) and the LCD (204) as shown in FIGS. In other words, the refraction generated at the interface can be reduced as compared with the case where air is interposed. In that respect, visibility is improved.

By the way, the present invention is not limited to the above embodiment.
In the illustrated embodiment, the display device of the present invention may be often mounted on a portable information terminal. However, the display device of the present invention is not limited to this, and other types of portable information terminals may be used. The present invention can be applied to electronic devices such as mobile phones, portable television receivers, wireless devices, vehicle guidance devices such as car navigation, and other devices having a liquid crystal display panel.

1 is a perspective view showing an electronic apparatus having a display device according to a first embodiment of the invention. The perspective view which shows the electronic device of FIG. 1 in detail. The disassembled perspective view which shows the display apparatus mounted in the electronic device shown in FIG. 1 and FIG. Sectional drawing of the display apparatus of FIG. The enlarged view which shows the part A of the display apparatus of FIG. The figure which shows an example of the data of the transmittance | permeability of a resin buffer material. (A), (B) shows the display apparatus of the 2nd Embodiment of this invention, (A) is a disassembled perspective view, (B) is sectional drawing. It is sectional drawing which shows the principal part of the display apparatus of the said 2nd Embodiment. (A), (B) shows the display apparatus of a prior art example, (A) is a disassembled perspective view, (B) is sectional drawing. It is sectional drawing which shows the principal part of the said prior art example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Electronic device, 14 ... Display apparatus, 60 ... Liquid crystal display panel, 61 ... 1st holding frame, 62 ... 2nd holding frame, 63 ... Backlight unit, 64. ..Touch panel, 80 ... interval, 90 ... resin filler, 102 ... LCD frame, 104 ... liquid crystal display panel (LCD), 106 ... touch panel frame, 108 ... touch panel, 110 ... resin filler

Claims (8)

A display device for displaying an image;
A liquid crystal display panel for displaying the image;
A touch panel that is arranged with an interval with respect to the liquid crystal display panel to allow a user to touch and input a command;
It is provided in the region of the space provided between the liquid crystal display panel and the touch panel, and cushions the force applied through the touch panel, and cures the polymerizable resin composition by irradiating ultraviolet rays through the touch panel. A transparent resin filler,
The polymerizable resin composition contains either polybutadiene-based (meth) acrylate or isoprene-based (meth) acrylate as a resin component ,
As a photoinitiator, containing an initiator that absorbs visible light,
The display in which the transparent resin filler cured by irradiating ultraviolet rays is adjusted to have a light transmittance of 95% or more in a wavelength range of 430 nm to 700 nm when the film thickness of the transparent resin filler is 500 μm. apparatus. The photoinitiator is bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide, 2-benzyl- The display device according to claim 1, wherein the display device is at least one selected from 2-dimethylamino-1- (4-morpholinophenyl) -butanone-1. An electronic device having a display device for displaying an image,
The display device
A liquid crystal display panel for displaying the image;
A touch panel that is arranged with an interval with respect to the liquid crystal display panel to allow a user to touch and input a command;
It is provided in the region of the space provided between the liquid crystal display panel and the touch panel, and cushions the force applied through the touch panel, and cures the polymerizable resin composition by irradiating ultraviolet rays through the touch panel. A transparent resin filler,
The polymerizable resin composition contains either polybutadiene-based (meth) acrylate or isoprene-based (meth) acrylate as a resin component ,
As a photoinitiator, containing an initiator that absorbs visible light,
The transparent resin filler cured by irradiating ultraviolet rays is an electron whose light transmittance in the wavelength range of 430 nm to 700 nm is adjusted to 95% or more when the film thickness of the transparent resin filler is 500 μm. machine. Sandwiching one side and the other side of the liquid crystal display panel between the first holding frame and the second holding frame;
Providing a space from the display panel of the liquid crystal display panel and fixing the touch panel to the first holding frame;
Filling the liquid polymerizable resin composition into the space between the display panel and the touch panel;
Irradiating the polymerizable resin composition with ultraviolet rays through the touch panel to cure the polymerizable resin composition to form a resin filler;
A method for manufacturing a display device. When the film thickness of the resin filler obtained by curing the polymerizable resin composition is 500 µm, the polymerizable resin composition having a light transmittance of 95% or more in a wavelength range of 430 nm to 700 nm is used. 5. A method for manufacturing the display device according to 4. The method for producing a display device according to claim 5, wherein the polymerizable resin composition contains either polybutadiene-based (meth) acrylate or isoprene-based (meth) acrylate as a resin component. The method for manufacturing a display device according to claim 5, wherein the polymerizable resin composition contains a photoinitiator that absorbs visible light. Combining the liquid crystal display panel and the touch panel by interposing a polymerizable resin composition between the display panel side of the liquid crystal display panel for displaying an image and one side of the touch panel facing the liquid crystal display panel;
Irradiating the polymerizable resin composition with ultraviolet rays through the touch panel, and curing the polymerizable resin composition.
A manufacturing method of a display device characterized by the above.

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