KR20170034512A - Touch film and mirror display comprising the same - Google Patents

Abstract

A tempered glass substrate and a method of manufacturing the same are disclosed. The touch film of the present invention includes a first conductive layer, a second conductive layer on the first conductive layer, and a cover on the second conductive layer. Further, a reflective polarizing layer is formed between the second conductive layer and the cover. According to the present invention, a reflective polarizing plate is positioned inside a touch film to reflect external light well and transmit internal light well.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch film and a mirror display including the touch film.

The present invention relates to a touch film and a mirror display including the touch film, and more particularly, to a touch film including a reflective polarizing layer in a touch film and a mirror display including the touch film.

The mirror display means a device capable of implementing a mirror function capable of viewing reflected parts of the outside world and a display function of providing photographs and images.

In general, conventional mirror displays reflect light by depositing aluminum (Al) on both sides of glass and using high reflectance of aluminum. However, this also reflects light from the inside to the outside, and the screen transmitted from the inside is not visible to the outside.

The present invention is directed to solving the above-mentioned problems and other problems. Another object of the present invention is to provide a touch film and a mirror display including the touch film, in which a reflective polarizer is positioned inside a touch film to reflect light from the outside well and transmit the inside light well.

According to an aspect of the present invention, there is provided a light emitting device comprising a first conductive layer, a second conductive layer on the first conductive layer, and a cover on the second conductive layer, And a reflective polarizing layer between the covers.

The first and second conductive layers may be coated on the upper surface of the base layer.

The second conductive layer may be coated on the lower surface of the reflective polarizer layer.

And a pressure-sensitive adhesive layer for bonding between the respective layers, wherein the thickness of the pressure-sensitive adhesive layer may be 20 占 퐉 to 100 占 퐉.

The adhesive layer may comprise PSA or OCA.

The reflective polarizer layer may comprise DBEF (DUAL BRIGHTNESS ENHANCEMENT FLIM).

The reflective polarizing layer may have a light transmittance of 30% or more from the inside to the outside.

The first and second conductive layers may include a plurality of conductors having a network structure therein.

The conductor may comprise silver nanowires.

According to an aspect of the present invention, there is provided a touch panel including a touch film and a display panel, wherein the touch film includes a first conductive layer, a second conductive layer on the first conductive layer, 2 conductive layer, and further comprising a reflective polarizing layer between the second conductive layer and the cover.

The protective film may be attached on the display panel.

The display panel includes a thin film transistor and the cover disposed on the top and bottom surfaces of the thin film transistor. The touch film may be inserted between the cover and the thin film transistor located on the top surface of the thin film transistor.

The reflective polarizer layer may comprise DBEF (DUAL BRIGHTNESS ENHANCEMENT FLIM).

The second conductive layer may be coated on the lower surface of the reflective polarizer layer.

The effects of the touch film and the mirror display including the touch film according to the present invention are as follows.

According to at least one of the embodiments of the present invention, the reflective polarizer is positioned inside the touch film, the external light is well reflected, and the internal light can be transmitted well.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1 is a perspective view showing a mirror display according to the present invention.
2 is a cross-sectional view of a touch film according to the present invention.
3 is a cross-sectional view illustrating a difference in effect between the touch film according to the present invention and the touch film according to the present invention.
FIG. 4 is a cross-sectional view illustrating a difference in configuration between a touch film according to the present invention and a touch film according to the present invention.
5 and 6 are sectional views of a touch film according to another embodiment of the present invention.
Figures 7 and 8 are cross sectional views showing various embodiments of a mirror display according to the present invention.
9 is a cross-sectional view showing various embodiments of a touch film according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

1 is a perspective view showing a mirror display according to the present invention.

Referring to FIG. 1, the mirror display 1 related to the present invention can be used in products such as mobile (mobile phone, PDA), LCD TV, LCD monitor, navigation, MP3, and notebook. The mirror display 1 can have both a display function for displaying a screen and a mirror function for displaying a subject positioned on the front side on the screen using reflection of light.

An idle screen may be displayed in the first input area 13 located at least a part of the screen of the mirror display 1, as shown in Fig. 1 (a). That is, it means that icons waiting for the user to select in the first input area 13 can be displayed. For example, a weather icon may be displayed in the first input area 13.

The user can input the first touch operation 17 in the first input area 13. [ For example, the first touch operation 17 may be a long touch or a short touch. The control unit of the mirror display 1 may display information in the first input area 13 corresponding to the first touch operation 17 of the user. For example, weather information may be displayed in the first input area 13 corresponding to the first touch operation 17.

When an idle screen or an information screen is displayed in the first input area 13, a subject positioned in front of the mirror display 1 can be continuously displayed on the screen. Accordingly, the user can obtain other information through the mirror display 1 while confirming his / her appearance.

2 is a cross-sectional view of a touch film according to the present invention.

Referring to FIG. 2, the touch film 10 may be included in the mirror display 1 described above. The touch film 10 according to the present invention includes a base layer 100, a first conductive layer 110a, an adhesive layer 120, a second conductive layer 110b, a reflective polarizer layer 130, and a cover 140 can do.

In the touch film 10, the first conductive layer 110a may be positioned on the base layer 100. The base layer 100 and the first conductive layer 110a may form the first electrode. For example, the first electrode may be a receiving means for receiving a signal to sense a touch input of a user. Although not shown, the first conductive layers 110a may be spaced apart from each other at least in one direction.

The base layer 100 may include a material having permeability while maintaining the mechanical strength of the first and second conductive layers 110a and 110b. For example, the base layer 100 may be formed of a material selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polyethylene-2,6-naphthalate, polypropylene terephthalate, polyimide, polyamideimide, polyether sulfone, polyetheretherketone, poly May include any one of a carbonate, a polyarylate, a cellulose propionate, a polyvinyl chloride, a polyvinylidene chloride, a polyvinyl alcohol, a polyetherimide, a polyphenylenesulfide, a polyphenylene oxide, a polystyrene and a combination thereof have. As an example, the base layer 100 may comprise polyethylene terephthalate.

The first conductive layer 110a may include a conductive material. The first conductive layer 110a may include a conductive material therein. The conductor may be a nanomaterial having a network structure (a kind of mesh structure). The conductor may comprise silver nanowires. The silver nanowires can be formed into a wire shape by the isotropic growth. The first conductive layer 110a may be formed by applying a mixture containing a small amount of a solvent, a binder, and the like to a conductor.

Since the surface of the silver has various crystal planes, this isotropic growth can be easily induced. Accordingly, the silver can be easily formed into a nanowire. In addition, silver nanowires can have lower resistance than indium-tin oxide (ITO). Accordingly, the silver nanowire can form the first conductive layer 110a having better conductivity. Silver nanowires can have a transmittance of 90% or more, which is superior to that of indium tin oxide. In addition, since silver nanowires have flexible characteristics, they can be used for flexible devices. Finally, the silver nanowires can be deposited more easily in the base layer 100 than other electrode materials. Accordingly, the conductor of the first conductive layer 110a may include silver nanowires.

The silver nanowire may have a radius of 10 nm to 60 nm and a major axis of 10 to 200 mu m. Thus, silver nanowires have excellent aspect ratios (e.g., 1: 300 ~ 1: 20000), which can well form the network structure.

The first conductive layer 110a may be formed by a wet coating method which is less costly than the deposition method. The first conductive layer 110a may remove a portion of the conductive material after coating. Specifically, the first conductive layer 110a may be formed entirely by a wet coating method in which paste, ink, or a mixture solution containing silver nanowires is applied. Next, the adhesion of the first conductive layer 110a can be improved by performing calendering in which the first conductive layer 110a is dried and pressed at a constant pressure.

Next, at least a portion of the first conductive layer 110a may be irradiated with a laser to remove the first conductive layer 110a. However, the present invention is not limited thereto, and only a conductor may be removed by irradiating laser to at least a part of the first conductive layer 110a. In this case, at least a part of the first conductive layer 110a may have voids of a network structure. That is, the first conductive layer 110a may remove at least some of the conductors or remove the first conductive layer 110a at least in some regions by adjusting the type and / or power of the laser.

Accordingly, the first conductive layer 110a having electrical conductivity can be formed in only a part of the region.

The adhesive layer 120 may be positioned on the first conductive layer 110a. The adhesive layer 120 may include a transparent material. The adhesive layer 120 can adhere materials that adhere to at least one side. That is, the adhesive layer 120 can fix materials adhering to at least one surface. For example, the adhesive layer 120 may comprise a pressure sensitive adhesive (PSA) or an optical clear adhesive (OCA).

The adhesive layer 120 may have a thickness of 20 [mu] m to 100 [mu] m. If the thickness of the adhesive layer 120 is less than 20 占 퐉, the adhesive force is not sufficient. If the thickness of the adhesive layer 120 is more than 100 占 퐉, the thickness of the touch film 10 may increase and optical properties such as transmittance Can be degraded. However, the thickness of the adhesive layer 120 is not limited thereto, and the thickness of the adhesive layer 120 may be different.

The adhesive layer 120 located at the upper portion or the lower portion of the first and second conductive layers 110a and 110b is located in a space between the first and second conductive layers 110a and 110b, And may be located above or below the conductive layers 110a and 110b.

The adhesive layer 120 may serve to insulate the upper portion and the lower portion. Thus, electrical interference between the first conductive layer 110a and the second conductive layer 110b can be prevented.

The base layer 100 and the second conductive layer 110b may be disposed on the first electrode and the adhesive layer 120. [ The second conductive layer 110b may be coated on the base layer 100. The base layer 100 and the second conductive layer 110b may form a second electrode. The second electrode may be a transmission means for transmitting a signal so as to sense a touch input of the user.

The second conductive layer 110b includes the same or similar material as the first conductive layer 110a and may be formed in a similar manner. The second conductive layer 110b may be spaced apart from the first conductive layer 110a by a predetermined distance and extend in a direction crossing the first conductive layer 110a.

The reflective polarizer layer 130 may be disposed on the second conductive layer 110b with the adhesive 120 interposed therebetween. The reflective polarizer layer 130 may be an optical member that enhances light efficiency by selectively transmitting and reflecting light. The reflective polarizing layer 130 may have a structure in which a plurality of films having the same refractive index in the X-axis and different refractive indices in the Y-axis are alternately laminated. The reflective polarizing layer 130 transmits light as a transmission axis on the X axis having the same refractive index, and the Y axis having a different refractive index can reflect light as a reflection axis. For example, the reflective polarizer layer 130 can transmit the P wave of the light component and reflect the S wave continuously. Reflection and transmission of the detailed light of the reflective polarizer layer 130 in the protective film 10 according to the present invention will be described later.

For example, the reflective polarizer layer 130 may include 3M's Dual Brightness Enhancement Film (DEBF). DEBF can be applied to curved displays because it has a thin thickness and excellent bending property compared to conventional polarizing plates. Also, DBEF can be easily applied to various display panels such as LCD and OLED. DBEF can be easily applied to a large display from a mobile display having a small size due to its large area.

 The reflective polarizer layer 130 may have a thickness of about 65 mu m. Accordingly, the reflective polarizer layer 130 may have a structure in which about 300 films are laminated.

The cover 140 may be positioned on the reflective polarizing layer 130 with the adhesive layer 120 interposed therebetween. The cover 140 may be made of a transparent material. The cover 140 can protect the inside of the touch film 10 from an external impact.

The touch film 10 according to the present invention can simultaneously serve to reflect a part of the light coming from the outside and to transmit a part of the light directed from the inside of the reflective polarizer layer 130. Thus, the above-described display function and mirror function can be achieved at the same time.

3 is a cross-sectional view illustrating a difference in effect between the touch film according to the present invention and the touch film according to the present invention.

3 (a), the oxide film 35 may be positioned on both sides of the glass 140 in the touch film according to the conventional method. The oxide film 35 can function to reflect a part of the light. The light OL directed from the outside to the inside of the touch film can be mostly reflected twice by the first external reflected light OL1 and the second external reflected light OL2. That is, it means that the amount of light OTL passing through the inside can be very small. Accordingly, since the touch film according to the present invention reflects a large amount of light, the function of the mirror can be improved.

Likewise, the light IL from the inside of the touch film to the outside can be mostly reflected twice by the first inside reflected light IRL1 and the second inside reflected light IRL2. That is, the amount of light (ITL) passing through the outside can be very small. Accordingly, the function of the display of the touch film according to the present invention can be substantially difficult.

Also, since the oxide film 35 includes a conductive material such as a metal oxide, it is difficult to accurately detect the touch position. Accordingly, the function as a touch panel may be bad.

As shown in FIG. 3 (b), in the touch film according to the present invention, the reflective polarizer layer 130 may be positioned on the lower surface of the glass 140. The reflective polarizing layer 130 may function to reflect a part of the light. The light PL directed from the outside to the inside of the touch film can be partially reflected by the outside reflected light PRL at one time. For example, the external reflected light PRL may have a light amount of about 60% or more of the light PL that is directed from the outside. That is, about 40% or less of the light PL directed from the outside means light PTL passing through the inside. Accordingly, the reflection amount of the touch film according to the present invention can be reflected at least a sufficient amount of light to function as a mirror.

Likewise, the light ML directed from the inside to the outside of the touch film can be partially reflected by the inside reflected light (MRL) all at once. That is, only a part of the light ML directed from the inside is the light MTL passing through the outside. For example, about 30% or more of the light ML from the inside may be the light MTL passing through the outside. Accordingly, since the touch film according to the present invention passes a certain amount of light from the inside to the outside, a function of the display may be sufficient.

The touch film according to the present invention sufficiently reflects a certain amount of light directed from the outside and can sufficiently pass a certain amount of light directed from the inside. In addition, since the touch film according to the present invention does not include a metal material on its surface, a mirror display with improved touch sensitivity can be realized.

FIG. 4 is a cross-sectional view illustrating a difference in configuration between a polarizing plate according to the present invention and a reflective polarizing plate according to the present invention.

As shown in FIG. 4 (a), in the polarizing plate according to the present invention, the polarizer 75 for polarizing light may be positioned between the polarizing protective layers 67. The liquid crystal layer 73 can be deposited on the upper surface of the polarizer 75 with the polarizing protective layer 67 interposed therebetween. In this case, the light is blocked by the polarizer 75, and transmission of an accurate image may be impossible. 4 (b), the retardation film 65 can be laminated between the liquid crystal layer 73 and the polarizer 75. As a result, In this case, accurate images can be delivered. However, as shown in FIG. 4 (a) or 4 (b), the thickness H1 of the polarizing plate according to the prior art has a problem in that a plurality of films are stacked to form a thick film and the manufacturing cost is increased.

4 (c), the polarizing plate according to the present invention has a simple structure using the reflective polarizing layer 130, so that a display function and a mirror function can be realized at the same time. Also, the thickness H2 of the reflective polarizer layer 130 may be twice or more thinner than the thickness H1 of the conventional polarizer.

5 and 6 are sectional views of a touch film according to another embodiment of the present invention.

Referring to FIG. 5, the hard coating layer 142 may be disposed on the reflective polarizer 130 in place of the cover 140 in the touch film 10 according to the present invention.

The hard coating layer 142 may include a material having a high hardness. For example, the hardness of the hard coat layer 142 may be 4H or more. The hard coat layer 142 may comprise any one of urethane resin, acrylic resin, and combinations thereof. If the hard coat layer 142 contains 70 wt% or more of the urethane resin, the display color may be deteriorated due to the yellowing phenomenon. If the hard coat layer 142 contains 20 wt% or less of urethane resin, the elasticity is insufficient and cracks may occur. Accordingly, the hard coat layer 142 may contain 20 to 70 wt% of urethane resin

The hard coat layer 142 may have a thickness of 1 to 100 mu m. If the thickness of the hard coat layer 142 is 5 μm or less, surface scratches may occur. If the thickness of the hard coat layer 142 is 50 μm or more, flexibility may be deteriorated due to cracks. Accordingly, the hard coat layer 142 may preferably be 5 to 50 占 퐉 thick.

Since the hard coating layer 142 is disposed on the reflective polarizer 130 in place of the cover 140 in the touch film 10 according to the present invention, image distortion may not occur due to surface curvature. Further, the thickness of the touch film 10 can be reduced compared to when the cover 140 is positioned.

Referring to FIG. 6, the touch film 10 according to the present invention may be coated on the lower surface of the reflective polarizer layer 130, not on the upper surface of the base layer 100.

The adhesive layer 120 may function as an insulating layer so as not to interfere with the first conductive layer 110a because the second conductive layer 110b is located on the lower surface of the reflective polarizer layer 130. [

In this case, the adhesive layer 120 for bonding the base layer 100, the base layer 100, and the reflective polarizer layer 130 may not be necessary. Accordingly, the manufacturing process of the touch film 10 is further simplified, and the thickness of the touch film can be reduced. In addition, the thickness of the touch film 10 is reduced, and the visibility can be improved.

Figures 7 and 8 are cross-sectional views illustrating various embodiments of a mirror display according to the present invention.

Referring to FIG. 7, the touch film 10 according to the present invention may be attached to an upper portion of the display panel 20. That is, the adhesive layer 120 may be further formed on the lower surface of the touch film 10 and attached to the cover 140 of the display panel 20 on the lower surface.

Alternatively, referring to FIG. 8, the touch film 10 according to the present invention may be included inside the display panel 20. That is, the touch film 10 can be inserted into the lower surface of the upper cover 140 of the display panel 20. That is, the touch film 10 is inserted between the upper cover 140 of the display panel 20 and the thin film transistor 180 of the display panel 20. In this case, the touch film 10 and the upper cover 140 of the display panel 20 can function in common. Accordingly, the entire thickness of the touch film 10 can be reduced compared with the case where the touch film 10 is attached to the upper portion of the display panel 20. [

7 and 8, the mirror display 1 according to the present invention can be attached or inserted to the display panel 20 with the touch film 10. Accordingly, the mirror function and the display function can be implemented at the same time.

9 is a cross-sectional view showing various embodiments of a touch film according to the present invention.

9, the touch film 10 according to the present invention may include at least a portion of the first and second conductive layers 110a and 110b to which the first and second conductive layers 110a and 110b are coupled, have.

The first conductive layer 110a of the touch film 10 may be attached to the reflective polarizer layer 130, as shown in FIG. 9 (a). As another example, the second conductive layer 110b of the touch film 10 may be attached to the reflective polarizer layer 130, as shown in Fig. 7 (b). As another example, the first and second conductive layers 110a and 110b of the touch film 10 may be attached to the reflective polarizer layer 130, as shown in FIG. 7C.

The first conductive layer 110a may be attached to the reflective polarizer layer 130 even when the second conductive layer 110b is positioned below the reflective polarizer layer 130 as shown in Figure 9 (d) have.

According to these embodiments, since the reflective polarizer 130 is positioned more than the other embodiments, the reflectance of light from the outside of the touch film 10 is increased and the transmittance of light from the inside can be reduced. Accordingly, the mirror function and the efficiency of the display function can be adjusted by controlling the number of the reflective flat panel plates 130 according to the performance of the mirror display.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

111: Tempered glass substrate 117: Protective film
211: Organic silicon layer 213: Inorganic silicon layer

Claims (15)

A first conductive layer;
A second conductive layer on the first conductive layer; And
A cover over the second conductive layer,
And a reflective polarizing layer between the second conductive layer and the cover.
The method according to claim 1,
Further comprising a base layer located below each of the first and second conductive layers,
The first and second conductive layers may be formed of a metal,
Wherein the base film is coated on the upper surface of each of the base layers.
The method according to claim 1,
Wherein the second conductive layer comprises:
And is coated on the lower surface of the reflective polarizing layer.
The method according to claim 1,
And an adhesive layer for bonding between the respective layers,
The thickness of the pressure-
20 占 퐉 to 100 占 퐉.
5. The method of claim 4,
The pressure-
Touch film including PSA or OCA.
The method according to claim 1,
Wherein the reflective polarizing layer comprises:
Touch film including DBEF (DUAL BRIGHTNESS ENHANCEMENT FLIM).
The method according to claim 1,
Wherein the reflective polarizing layer comprises:
Wherein the reflectance of light directed from the outside to the inside is 60% or more.
The method according to claim 1,
Wherein the reflective polarizing layer comprises:
Wherein the transmittance of light directed from the inside to the outside is 30% or more.
The method according to claim 1,
The first conductive layer and the second conductive layer may be formed,
A touch film comprising a plurality of conductors having a network structure therein.
10. The method of claim 9,
The conductor
A touch film comprising nanowires.
Touch film; And
A display panel,
The touch film includes:
A first conductive layer,
A second conductive layer on the first conductive layer,
A cover over the second conductive layer,
And a reflective polarizing layer between the second conductive layer and the cover.
12. The method of claim 11,
The above-
Wherein the mirror display is attached to the display panel.
12. The method of claim 11,
The display panel includes:
Thin film transistor; And
And the cover located on the upper and lower surfaces of the thin film transistor,
The touch film includes:
A mirror display inserted between the cover and the thin film transistor located on the top surface of the thin film transistor.
12. The method of claim 11,
Wherein the reflective polarizing layer comprises:
A mirror display comprising DBEF (DUAL BRIGHTNESS ENHANCEMENT FLIM).
12. The method of claim 11,
Wherein the second conductive layer comprises:
Wherein the reflective polarizing layer is coated on the lower surface thereof.

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