JP2004077887A - Display and electronic equipment having display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display by which the enhanced strength of a touch panel and thin film formation of the display are achieved and an electronic equipment having the display. <P>SOLUTION: A display 14 for displaying a picture comprises: a liquid crystal display panel 60 for displaying the picture; a touch panel 64 arranged by leaving a gap 80 with respect to the liquid crystal display panel 60 and enabling a user to input instructions by touching it; and a resin filling material 90 filled in the region of the gap 80 provided between the liquid crystal display panel 60 and the touch panel 64 and buffering force applied through the touch panel 64. The resin filling material 90 consists of a polymeric resin composition and has a light transmission at a wavelength region of 430 to 700 nm of 95% or more when the film thickness of the resin filling material 90 is 500 μm. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device for displaying an image and an electronic apparatus having the display device.
[0002]
[Prior art]
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 on the surface thereof so that a user can make an input by touching 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, where FIG. 9A is an exploded perspective view and FIG. 9B is a cross-sectional view.
[0003]
In the figure, reference numeral 202 denotes an LCD (liquid crystal device) frame; 204, an LCD (liquid crystal device) disposed on the LCD frame 202; and 206, a touch panel (208) described below is slightly spaced above the LCD 204 (for example, 0.1 mm to 1.2 mm) and an LCD frame 208 held by the LCD frame 206 and a touch panel disposed above the LCD 204 at a distance of, for example, about 0.1 mm to 1.2 mm by the LCD frame 206. , 210 are spaces 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.
[0004]
First, the space 210 is provided between the LCD 204 and the touch panel 208 in order to prevent bleeding of the LCD 204 due to pressure applied to the touch panel 208 by a user for input.
That is, in a structure in which the LCD 204 and the touch panel 208 are directly contacted without providing a space 210 therebetween, when the touch panel 208 is pressed 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 therearound from the pressure point, which appears as strong bleeding.
[0005]
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.
[0006]
The second reason for providing the space 210 is to prevent Newton rings (Moire fringes) from being generated at the interface between the touch panel 208 and the LCD 204. That is, bringing the touch panel 208 into direct contact with the LCD 204 is nothing less than bringing the glass plate 208g of the touch panel 208 and the glass plate 208g of the LCD directly into contact with each other as shown in FIG. Although the glass plate 208g and the LCD glass plate 208g are both finished so that the surface becomes a plane with higher flatness, they are not perfect planes. The spaces entered are randomly scattered, resulting in Newton's rings.
Since this is visible from the display unit, the quality of the displayed image is degraded, which is of course undesirable. Therefore, the space 210 is completely interposed between them. Then, no Newton ring occurs.
[0007]
Such a problem should be solved without providing a 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 at least practically impossible at present. This is because the manufacturing process, especially the temperature condition, of the process of forming the LCD 204 and the process of forming the touch panel 208 are significantly different, and it is difficult or impossible to integrally manufacture them.
Therefore, at least with the current technology, it is impossible to share the glass plate 208g of the touch panel 208 and the glass plate 204g of the LCD with one glass plate, and therefore, it is necessary to provide a space 210 therebetween.
[0008]
[Problems to be solved by the invention]
However, when the air gap 210 is provided between the touch panel 208 and the LCD 204 as described above, since the air gap 210 exists between the touch panel 208 and the LCD 204, when the touch panel 208 is strongly and strongly pressed, The touch panel is easily cracked, and may be broken.
[0009]
In addition, if the air gap 210 is provided between the touch panel 208 and the LCD 204, there is a problem that non-negligible reflection of light occurs at the interface between the touch panel 208 and the LCD 204, and visibility deteriorates. That is, since the difference in the refractive index between the glass plate of the touch panel 208 and the air is large, the difference in the refractive index between the glass plate 208 g forming the lower portion of the touch panel 208 and the glass plate 204 g forming the upper portion 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.
[0010]
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 reduce the reflection of light between the touch panel and the liquid crystal display panel. It is an object of the present invention to provide a display device which can be reduced and an electronic device having the display device.
[0011]
[Means for Solving the Problems]
The invention according to claim 1 is a display device for displaying an image, wherein a liquid crystal display panel for displaying the image is arranged at an interval with respect to the liquid crystal display panel, and a user touches and inputs a command. A display device, wherein a transparent resin filler for buffering a force applied through the touch panel is filled in a region of the interval provided between the touch panel and the touch panel.
[0012]
According to the first aspect, the liquid crystal display panel displays an image. The touch panel is disposed at an interval with respect to the liquid crystal display panel, and is used by a user to input a command by touching the touch panel.
The transparent resin filler is provided in a region at an interval 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 through the touch panel.
[0013]
It can be said that the resin filler can improve the strength of the touch panel by preventing cracking of the touch panel without lowering the light transmittance without causing blurring of the image display of the liquid crystal display panel. 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 in reducing a decrease in visibility due to reflection of light between the liquid crystal display panel and the touch panel. Because the resin filler generally has a refractive index between the refractive index of air and that of glass, make sure that the glass filler and liquid crystal display panel or touch panel are in direct contact with the resin filler without air. In this case, light reflection between the panels can be made smaller than in the case where air is interposed between the glass plates as in the related art, and the reduction in visibility can be reduced.
[0014]
According to a second aspect of the present invention, in the display device according to the first aspect, the resin filler is made of a polymerizable resin composition, and the resin filler has a light transmittance in a wavelength range of 430 nm to 700 nm. Is not less than 95% when the film thickness is 500 μm.
[0015]
Therefore, according to the second aspect of the present invention, the light transmittance in the wavelength range of 430 nm to 700 nm of the resin filler is 95% or more when the film thickness of the resin filler is 500 μm. Can prevent the touch panel from cracking and improve the strength of the touch panel without causing blurring of the image display of the liquid crystal display panel and 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.
[0016]
According to a third aspect of the present invention, in the display device according to the second aspect, the polymerizable resin composition contains (meth) acrylate and a photoinitiator as resin components.
[0017]
According to a fourth aspect of the present invention, in the display device according to the third aspect, the resin component contains a urethane (meth) acrylate, a polybutadiene (meth) acrylate, and an isoprene (meth) acrylate.
[0018]
According to a fifth aspect of the present invention, in the display device according to the fourth aspect, the photoinitiator includes a photoinitiator having absorption in a visible region.
[0019]
The invention according to claim 6 is the display device according to claim 3, wherein the photoinitiator is a phosphine oxide-based initiator.
[0020]
The invention according to claim 7 is the display device according to claim 6, wherein the phosphine oxide-based initiator is bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide or Bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide.
[0021]
The invention according to claim 8 is the display device according to claim 3, wherein the photoinitiator is 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1.
[0022]
According to a ninth aspect of the present invention, in the display device according to the first aspect, the transparent resin filler is a special synthetic rubber transparent paint.
[0023]
The invention according to claim 10 is an electronic apparatus having a display device for displaying an image, wherein the display device is provided with a liquid crystal display panel for displaying the image and a space provided with respect to the liquid crystal display panel. A touch panel for a user to input a command by touching, and a resin filling for filling a region of the space provided between the liquid crystal display panel and the touch panel to buffer a force applied through the touch panel. Wherein the resin filler is made of a polymerizable resin composition.
[0024]
In claim 10, the liquid crystal display panel displays an image. The touch panel is disposed at an interval with respect to the liquid crystal display panel, and is used by a user to input a command by touching the touch panel.
The resin filler is filled in an interval region provided between the liquid crystal display panel and the touch panel. This resin filler is for buffering a force applied to the liquid crystal display panel through the touch panel.
[0025]
In claim 11, the resin filler is made of a polymerizable resin composition, and the light transmittance of the resin filler in a wavelength range of 430 nm to 700 nm is 95% when the film thickness of the resin filler is 500 μm. That is all.
As a result, in the wavelength range of 430 nm to 700 nm of the resin filler, the light transmittance is 95% or more when the film thickness of the resin filler is 500 μm. The strength of the touch panel can be improved by preventing cracking of the touch panel without causing bleeding and lowering the light transmittance. In addition, since the distance between the liquid crystal display panel and the touch panel is small, it is also effective for reducing the thickness of the display device.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiments described below are preferred specific examples of the present invention, and therefore, various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. It is not limited to these forms unless otherwise stated.
[0027]
FIG. 1 shows a preferred first embodiment of an electronic apparatus having the first embodiment of the display device of the present invention.
The electronic device 10 shown in FIG. 1 is a so-called portable information terminal (PDA) as an example. The electronic device 10 has 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 of FIG. 1 includes a housing 12, a display device 14, an input device 20, a power key 22, an audio volume control unit 24, a jack 27 for connecting an external earphone, and other functions. It has keys 26, 28 and the like.
[0028]
The input device 20 shown in FIG. 1 is for giving coordinate data of a pointer P by operating with a part of an operator (user), for example, a finger F of a hand H. Although the index finger is used as the finger F in the example of FIG. 1, the finger is not limited to this and may be another finger. FIG. 2 shows an example of the information 40 displayed on the display screen 30 of FIG. A pointer P is displayed on the display screen 30 as shown in FIGS. 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 a keyboard on the display screen 30. The key 44 is a key used for searching for information. 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. The operation of these keys 42, 44, 46, 48 can be performed by touching with the finger F.
[0029]
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 portion 12A and the second portion 12B overlap to form a space therein. The display device 14, a circuit board, and the like are accommodated in this space.
The housing 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 (polyfethiene). Renether).
[0030]
FIG. 3 shows a structural example of the display device 14 housed in the housing 12 shown in FIGS. 1 and 2.
The display device 14 is also called a liquid crystal display device, and roughly 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 further laminated, and various types 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 press-formed products such as stainless steel and iron.
[0031]
FIG. 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 a rectangular opening 70, for example. The opening 70 has a size corresponding to the display area of the liquid crystal display panel 60.
[0032]
The second holding frame 62 has an opening 71 having a size similar to that of the liquid crystal display panel 60. Therefore, the liquid crystal display panel 60 is in contact with the backlight unit 63.
The first holding frame 61 and the second holding frame 62 sandwich the liquid crystal display panel 60 by fitting the plurality of projections 74 of the second holding frame 62 into the plurality of recesses 73 of the first holding frame 61. It can be held in the form
[0033]
The backlight unit 63 has, for example, a light source of a fluorescent tube, and guides the light from the light source to the rear 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, passes through the prism sheet, and emits light from the rear side of the liquid crystal display panel 60. By using such a backlight unit 63, the user can more clearly see the image displayed on the liquid crystal display panel 60.
[0034]
The touch panel 64 in FIG. 3 is made by bonding a glass plate or a polyester film, for example. 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, an interval is provided between the touch panel 64 and the display screen 30.
[0035]
FIG. 5 shows a portion A of FIG. 4 in an enlarged manner.
A part A shown in FIG. 5 shows a part of the touch panel 64 and the liquid crystal display panel 60, and an interval 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 which is an outer frame material. That is, the touch panel 64 is fixed to the first holding frame 61, and an interval 80 is formed between the inner surface of the touch panel 64 and the display screen 30 of the liquid crystal display panel 60.
[0036]
As shown in FIGS. 4 and 5, a resin filler 90 is filled in the space area of the interval 80. The resin filler 90 is also called a photocurable adhesive, and for example, a visible light curable transparent adhesive can be used.
As the resin filler 90, for example, SOA1000 series manufactured by Sony Chemical Corporation can be used. The resin filler 90 is a photo-curable resin that fills the gap 80 when the gap 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. And has a function of buffering, for example, 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, the light transmittance in the wavelength range of 430 nm to 700 nm of the resin filler 90 is 500 μm when the film thickness of the resin filler 90 is 500 μm. 95% or more.
[0037]
This polymerizable resin composition contains (meth) acrylate and a photoinitiator as resin components.
This resin component contains urethane (meth) acrylate, polybutadiene (meth) acrylate, and isoprene (meth) acrylate.
Photoinitiators include those that absorb in the visible region.
The photoinitiator is, for example, a phosphine oxide-based initiator. The phosphine oxide-based initiator is bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide or bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide. is there.
Also, the photoinitiator may be 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1.
[0038]
The above-described resin filler 90 is also called a buffer filler or a resin buffer. The resin filler has a high transparency from the viewpoint of visibility, and has a flexibility from the viewpoint of reducing the impact of dropping and pressing, and is in a liquid state at the time of manufacturing to fill 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, which can be compounded and formulated according to the required characteristics, is preferable.
[0039]
Specific examples of the resin component of the polymerizable resin composition include a (meth) acrylate having an alicyclic structure from the viewpoint of maintaining high transparency, and a (meth) acrylate having a rubber component from the viewpoint of imparting flexibility. Among these, urethane-based (meth) acrylates having relatively high transparency and flexibility, polybutadiene-based (meth) acrylates having a polybutadiene skeleton, and isoprene-based (meth) acrylates having an isoprene skeleton are preferable. be able to.
[0040]
The photo initiator can be selected in consideration of the manufacturing process of the display device 14 according to the present invention.
That is, when the touch panel 64 can be quickly placed on the outer frame material after the polymerization is started by irradiating acrylate or the like which is the base material of the resin buffer material with ultraviolet rays or the like, the light The initiator can be used without limitation.
However, since such a method requires the skill of the operator, irradiating ultraviolet rays or the like via the touch panel after the touch panel 64 is placed on the outer frame material stabilizes the manufacturing process.
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 of ultraviolet rays or the like is increased.
[0041]
Thus, in the present invention, a so-called visible light initiator, which absorbs in the visible region and initiates polymerization at a wavelength in the visible region, can be preferably used. Specific examples of the visible light initiator include bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide and bis (2,4,6-trimethylbenzoyl) -phenylphosphine. And phosphine oxide-based photoinitiators such as oxide, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1, and the like.
[0042]
Next, the resin buffer 90 made of the above 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 thickness of the resin buffer 90 is 500 μm. I do.
If the light transmittance of the resin buffer 90 at a wavelength of 430 nm to 700 nm is 95% or more when the thickness of the resin buffer 90 is 500 μm, blurring of image display on the liquid crystal display panel may occur. This does not occur, and it is possible to prevent the touch panel 64 from cracking and increase the strength of the touch panel without lowering the light transmittance. Moreover, 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 buffer material 90 is filled in the space 80 shown in FIG. 5 and is cured by irradiating, for example, ultraviolet rays from the R side of the touch panel 64.
[0043]
The experimental results of the present inventor show that the conventional touch panel with a gap between the air gaps and the display device with the gap 80 filled with the resin filler 90 as in the embodiment of the present invention have a static touch panel. When the strength was compared under load, the effect was approximately doubled. When comparing the conventional display device and the display device according to the embodiment of the present invention in terms of light transmittance, no difference was found between the two.
[0044]
Regarding the bleeding of the image display on the display screen 30 of the liquid crystal display panel 60, it was confirmed that the bleeding did not occur even if the resin filler 90 was present.
The touch panel 64 is broken when the touch panel 64 is mutated by a certain amount or more. However, the strength of the touch panel 64 when pressed from the R direction is reduced due to the presence of the resin filler 90 which is a photocurable resin. Can be up.
[0045]
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 strength of the touch panel 64. Therefore, 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, for example, glass. The resin filler 90 can be collected as a single item when the display device 14 is recycled. For this reason, consideration is given to the environment.
[0046]
As described above, in the display device and the electronic apparatus having the display device of the present invention, the space between the touch panel 64 and the display screen 30 of the liquid crystal display panel 60 is filled with, for example, an ultraviolet-curable resin filler material 90 so that the Cracking of the touch panel 64 due to impact or the like can be prevented without reducing the transmittance, and the strength of the touch panel 64 can be increased.
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 collected separately. Yes, the environment is considered.
[0047]
7A and 7B show a schematic configuration of a second embodiment of the present invention, in which FIG. 7A is an exploded perspective view, FIG. 7B is a cross-sectional view, and FIG. FIG. 3 is a cross-sectional view showing an LCD and a resin filler interposed therebetween in more detail.
[0048]
7 and 8, reference numeral 102 denotes an LCD (liquid crystal device) frame; 104, an LCD disposed on the LCD frame 102; and 106, a touch panel (108) described below is slightly spaced above the LCD 104 (for example, 0). .1 mm to 1.2 mm), and an LCD frame 108 is disposed above the LCD 102 by the LCD frame 106 via a resin filler 110 having a thickness of, for example, about 1.0 mm. It is a touch panel.
[0049]
The resin filler 110 is made of, for example, a special synthetic rubber transparent paint Vyclear (trade name, manufactured by Hibee Coat Inc.).
Since the resin filler 110 made of, for example, a special synthetic rubber transparent paint biclear has high transparency, a decrease in the visibility of the LCD screen required for the display device is low. In addition, since it has rubber elasticity, it is possible to reduce the load applied to the LCD 104 when pressure is applied to the touch panel 108 for inputting characters and the like with the pen P, thereby substantially improving the mechanical strength. It can be said that it is possible.
[0050]
Since the refractive index of the resin filler 110 is larger than that of air and close to that of the glass 104g, 108g, the space (210) 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 this respect, the visibility is also improved.
[0051]
The present invention is not limited to the above embodiment.
Although the display device of the present invention may be often mounted on a portable information terminal in the illustrated embodiment, the display device of the present invention is not limited to this, and the display device of the present invention may be another type of portable information terminal. The present invention can be applied to electronic devices, for example, mobile phones, portable television receivers, wireless devices, vehicle guidance devices such as car navigation devices, and other devices having a liquid crystal display panel.
[0052]
【The invention's effect】
As described above, according to the present invention, it is possible to improve the strength of the touch panel while ensuring transparency, and to reduce the thickness of the display device. The reflection of light during the period can be reduced.
[Brief description of the drawings]
FIG. 1 is an exemplary perspective view showing an electronic apparatus having a display device according to a first embodiment of the present invention;
FIG. 2 is an exemplary perspective view showing the electronic device of FIG. 1 in more detail;
FIG. 3 is an exploded perspective view showing a display device mounted on the electronic apparatus shown in FIGS. 1 and 2;
FIG. 4 is a cross-sectional view of the display device of FIG.
FIG. 5 is an enlarged view showing a portion A of the display device of FIG. 4;
FIG. 6 is a diagram showing an example of transmittance data of a resin buffer material.
FIGS. 7A and 7B show a display device according to a second embodiment of the present invention, wherein FIG. 7A is an exploded perspective view and FIG.
FIG. 8 is a cross-sectional view illustrating a main part of the display device according to the second embodiment.
9A and 9B show a conventional display device, wherein FIG. 9A is an exploded perspective view, and FIG. 9B is a sectional view.
FIG. 10 is a sectional view showing a main part of the conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Electronic device, 14 ... Display device, 60 ... Liquid crystal display panel, 61 ... First holding frame, 62 ... Second holding frame, 63 ... Backlight unit, 64 ··· Touch panel, 80: spacing, 90: resin filler, 102: LCD frame, 104: liquid crystal display panel (LCD), 106: touch panel frame, 108: touch panel, 110: resin filler.

Claims (11)

A display device for displaying an image,
A liquid crystal display panel for displaying the image,
A touch panel that is arranged at an interval with respect to the liquid crystal display panel and is used by a user to input a command when touched;
A display device, comprising: a transparent resin filler provided in an area of the space provided between the liquid crystal display panel and the touch panel, for buffering a force applied through the touch panel. The resin filler is made of a polymerizable resin composition, and the light transmittance in a wavelength range of 430 nm to 700 nm of the resin filler is 95% or more when the film thickness of the resin filler is 500 μm. The display device according to claim 1, wherein: The display device according to claim 2, wherein the polymerizable resin composition contains (meth) acrylate and a photoinitiator as resin components. The display device according to claim 3, wherein the resin component contains a urethane (meth) acrylate, a polybutadiene (meth) acrylate, and an isoprene (meth) acrylate. The display device according to claim 3, wherein the photoinitiator includes a photoinitiator that absorbs in a visible region. The display device according to claim 3, wherein the photoinitiator is a phosphine oxide-based initiator. The phosphine oxide-based initiator is bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide or bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide. The display device according to claim 6. The display device according to claim 3, wherein the photoinitiator is 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1. The display device according to claim 1, wherein the transparent resin filler is a special synthetic rubber transparent paint. 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 at an interval with respect to the liquid crystal display panel and is used by a user to input a command when touched;
A transparent resin filler provided in the region of the interval provided between the liquid crystal display panel and the touch panel and configured to buffer a force applied through the touch panel. Electronics. ,
The resin filler is made of a polymerizable resin composition, and the light transmittance in a wavelength range of 430 nm to 700 nm of the resin filler is 95% or more when the film thickness of the resin filler is 500 μm. The electronic device according to claim 10, further comprising a display device.

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