KR20130010599A - Substrate filter and display apparatus having the same - Google Patents

Abstract

PURPOSE: A substrate filter and a display device including the same are provided to improve visibility by removing an air layer between the display panel and the substrate filter. CONSTITUTION: A filter(200) includes a transparent substrate(210) and a self-adhesive optical bonding resin layer(220) on the lower side of the transparent substrate. The self-adhesive optical bonding resin layer is attached to the upper side of the display panel. The transparent substrate has high transparency and heat resistance. The transmission rate of visible rays is 80% or greater on the transparent substrate. The glass transition temperature of the transparent substrate is 50 degrees centigrade or greater. The thickness of the transparent substrate is 0.5 to 3.2 mm.

Description

Substrate filter and display device including the same {SUBSTRATE FILTER AND DISPLAY APPARATUS HAVING THE SAME}

The present invention relates to a substrate filter and a display device including the same, and more particularly, to a substrate filter including a self-adhesive optical bonding resin layer attached to a display panel and a display including the same.

As the modern society becomes highly informational, display devices are becoming remarkably advanced and rapidly spreading. Display devices such as televisions, PC monitors, portable display devices, and the like have tended to have larger screen sizes and thinner screens.

Accordingly, Cathode Ray Tube (CRT) devices, which are representative of display devices, include Liquid Crystal Display (LCD), Plasma Display Panel (PDP) devices, and Field Emission Display devices. : FED) and flat panel displays (FPDs) such as organic light emitting displays (OLEDs).

PDP devices are in the spotlight due to their excellent display ability such as brightness, contrast, afterimage, viewing angle, and the like. The PDP apparatus applies a direct current or an alternating voltage to the electrodes to excite the phosphors by ultraviolet rays accompanying the discharge generated in the gas between the electrodes to emit visible light, thereby displaying an image.

However, the PDP device has a problem in that a large amount of electromagnetic waves and near infrared rays are emitted. Electromagnetic waves and near-infrared rays have a harmful effect on the human body and may cause malfunctions of precision devices such as cordless phones and remote controls. In addition, due to the orange light (neon light) emitted from the discharge gas, there is a problem that the color purity is poor compared to the CRT apparatus.

Therefore, in order to solve this problem, the PDP device employs a display filter in front of the display panel, and recently, as the thinning and high visibility of the display are important, some displays use a film filter instead of the substrate filter. .

However, noise and heat generated when the display panel is driven while using the film filter are also problematic, and the display panel is easily broken by external shock.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to reduce the noise and heat generated when driving the panel and also the substrate filter and display device that the display panel is not easily broken by external impact To provide.

To this end, the present invention is a substrate filter installed on the upper surface of the display panel, a transparent substrate; And a self-adhesive optical bonding resin layer formed on a lower surface of the transparent substrate and attached to an upper surface of the display panel.

Here, the transparent substrate may be chemically strengthened glass.

In addition, a frame may be printed on a lower edge of the transparent substrate.

In addition, the self-adhesive optical bonding resin layer may be an acrylic or silicone-based adhesive elastic body containing a urethane-based oligomer.

In addition, the self-adhesive optical bonding resin layer may be formed to a thickness of less than 300㎛.

In addition, a pattern may be formed on the self-adhesive optical bonding resin layer.

The self-adhesive optical bonding resin layer may include at least one of a color correction material and a near infrared absorbing material.

In addition, the color correction material may include at least one of a neon cut pigment or a coloring pigment.

In addition, the present invention is a display panel; And a substrate filter formed on an upper surface of the display panel and having a self-adhesive optical bonding resin layer attached to the display panel.

According to the present invention, it is possible to block noise and heat generated when the display panel is driven and to prevent the display panel from being broken due to external impact.

In addition, the present invention has an effect of improving visibility because there is no air layer between the display panel and the substrate filter.

In addition, the present invention is attached to the display panel and the substrate filter in a sheet to sheet (Sheet to Sheet) method, there is an effect that does not require an anti-reflective (AR) coating layer for preventing the dual phase between the substrate filter and the display panel.

In addition, the present invention has an effect that can implement a free design by printing a frame on the lower edge of the transparent substrate in a printing method.

1 is a schematic cross-sectional view of a substrate filter according to an embodiment of the present invention.
2 is a schematic cross-sectional view of a substrate filter having a plurality of functional optical layers in accordance with one embodiment of the present invention.
Figure 3 is a schematic cross-sectional view of a substrate filter is a frame printed on the lower edge of the transparent substrate according to an embodiment of the present invention.

Hereinafter, a substrate filter and a display apparatus including the same according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a schematic cross-sectional view of a substrate filter according to an embodiment of the present invention.

Referring to FIG. 1, a substrate filter 200 according to an exemplary embodiment of the present invention may be formed on a transparent substrate 210 and a lower surface of a transparent substrate and attached to an upper surface of a display panel. And 220.

The transparent substrate 210 preferably has high transparency and heat resistance, and more preferably, visible light transmittance of 80% or more, glass transition temperature of 50 ° C or more, and may have a thickness of 0.5 to 3.2 mm.

Examples of the material of the transparent substrate 210 include an inorganic compound molding and an organic polymer molding. Inorganic compound moldings include semi-tempered glass, quartz, and the like, and organic compound moldings include polyethylene terephthalate (PET), acrylic, polycarbonate (PC), and urethane acrylate (Urethane Acrylate). ), Polyester, epoxy acrylate, brominated acrylate, polyvinyl chloride (PVC), and the like.

In particular, the transparent substrate 210 may be made of chemically strengthened glass to have a strong performance against external impact.

By using the substrate filter 200 by the transparent substrate 210, it is possible to prevent the phenomenon that the panel is easily broken due to noise, heat generation problems and external shock generated when the panel is driven by the use of the film filter.

In addition, the transparent substrate 210 according to an embodiment of the present invention may be configured to include one or more functional optical layers.

2 is a cross-sectional view schematically showing the structure of a substrate filter having a plurality of functional optical layers according to an embodiment of the present invention.

Referring to FIG. 2, the substrate filter may sequentially include an anti-reflection layer 211, a transparent substrate 210, an electromagnetic shielding layer 212, an external light shielding layer 213, an anti-glare film 214, and the like. The color correction layer 215, the near infrared shielding layer 216, and the self-adhesive optical bonding resin layer 220 are comprised.

The antireflection layer 211 improves visibility by suppressing reflection of external light, and the electromagnetic shielding layer 212 shields electromagnetic waves generated from the display panel. The external light shielding layer 213 absorbs external light to prevent external environmental light from entering the display panel, the anti-glare layer 214 diffuses light from the display panel, and the color correction layer 215 is red (R). Reduce or adjust the amount of green (G) or blue (B) to change or correct the color balance. In addition, the near infrared shielding layer 216 serves to absorb the near infrared rays generated in the display panel.

However, FIG. 2 is merely illustrative of one embodiment of the present invention and various modifications are possible.

For example, the type of layers constituting the substrate filter of the present invention may be variously selected according to the function of the filter to be obtained, and the various functional optical layers constituting the substrate filter of FIG. Layers can be added.

In addition, the substrate filter of the present invention may have various modified embodiments even in the stacking order thereof. For example, the stacking order of the layers constituting the substrate filter of FIG. 2 may be modified at any time as needed.

The self-adhesive optical bonding resin layer 220 attaches the bottom surface of the transparent substrate 210 to the top surface of the display panel 100.

By using a self-adhesive resin, it is possible to have excellent rework property compared with a general PSA adhesive.

The self-adhesive optical bonding resin may be an acrylic or silicone-based adhesive elastomer including a urethane-based oligomer.

After applying the self-adhesive optical bonding resin to the lower surface of the transparent substrate 210 and curing by irradiating ultraviolet rays or heat, the adhesive elastic body will be attached to the upper surface of the display panel 100. Thereby, in the method of attaching the substrate filter to the display panel by the conventional fixer fixing method, it is possible to prevent the visibility from being lowered due to the presence of the air layer between the display panel and the substrate filter.

In addition, since the display panel and the substrate filter are attached in a sheet-to-sheet manner, there is no need for an anti-reflective (AR) coating layer to prevent double phase between the substrate filter and the display panel.

3 is a schematic cross-sectional view of a substrate filter in which a frame is printed on a lower edge of a transparent substrate according to an embodiment of the present invention.

Referring to FIG. 3, the substrate filter 200 according to the present invention is attached to the display panel 100 by the self-adhesive optical bonding resin layer 220 of the substrate filter 200, thereby supporting the transparent substrate 210. It is possible to implement a frameless substrate filter that does not require a frame member to suppress flow.

As a result, the frame 230 may be printed on the bottom edge of the transparent substrate 210 by a printing method to implement a free design. That is, by printing a frame 230 having various colors and / or pearls on the bottom edge of the transparent substrate 210, a product having a good design may be produced.

In addition, the thickness of the self-adhesive optical bonding resin layer 220 may be 300 μm or less in order to lower the probability of occurrence of bubbles and the occurrence of bubbles during curing.

In addition, various types of patterns may be formed in the self-adhesive optical bonding resin layer 220 such as horizontal, vertical, lattice, and honeycomb. More preferably, by forming a round groove-shaped pattern, the viewing angle and color shift may be improved.

In addition, the self-adhesive optical bonding resin layer 220 of the substrate filter 200 according to an embodiment of the present invention may be configured to include at least one color correction material or a near infrared absorbing material.

As a result, a function of replacing or assisting the color correction layer to the near infrared shielding layer may be performed.

The color correction material may include at least one of the above-described neon cut pigment or toning pigment.

Coloring pigments include cyanine, anthraquinone, naphthoquinone, phthalocyanine, naphthalocyanine, dimonium, nickel dithiol, azo, stryl, phthalocyanine, methine, porphyrin, azaporphyrin, etc. This can be used.

The neon cut dye for absorbing orange light (neon light) and lowering the transmittance of light in the wavelength range is not particularly limited since it only needs to absorb 10% to 90% of light having a wavelength of 550 to 610, but is not particularly limited. Methine type, squarylium salt type, phthalocyanine type, naphthalocyanine type, quinone type, azaporphyrin type, azo type, azochelate type, azurenium type, pyryllium type, croconium type, indoaniline chelate type, indonaphthol chelate type, A dithiol metal complex, a pyrromethene type, an azomethine type, a xanthene type, an oxonol type, etc. can be used.

However, the pigment | dye of this invention is not limited to the kind illustrated above. Since the type and concentration of the dye are determined by the absorption wavelength, absorption coefficient, and transmission characteristics required for the display, the dye is not limited to a specific kind or numerical value.

The near infrared absorbing material is required to have a material that selectively absorbs wavelength light in the near infrared region.

The near-infrared absorbing material usable in the present invention is not particularly limited, but i) a mixed pigment of nickel complex and diammonium, ii) a compound dye containing copper ions and zinc ions, iii) a cyanine dye, and iii) anthraqui Non-dye, v) squarylium-based compound, i) azomethine-based compound, i) ochisonol compound, i) azo-based compound and i) benzylidene-based compound can be used.

In addition, the display may be manufactured by attaching the above-described substrate filter 200 according to the present invention to the upper surface of the display panel 100.

So far, the present invention has been described using the PDP display filter as an example. However, the present invention is not limited thereto, and the present invention is not limited thereto. It can be variously applied to a large display device such as, ii) a small mobile display device such as PDA (Personal Digital Assistants), a small game machine display window, a mobile phone display window, and (i) a flexible display device.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims as well as the appended claims.

100: display panel 200: substrate filter
210: transparent substrate 211: antireflection layer
212: electromagnetic shielding layer 213: external light shielding layer
214: antiglare layer 215: color correction layer
216: near infrared shielding layer 220: resin layer

Claims (9)

In the substrate filter provided on the upper surface of the display panel,
A transparent substrate; And
And a self-adhesive optical bonding resin layer formed on a lower surface of the transparent substrate and attached to an upper surface of the display panel.
The method of claim 1,
The transparent substrate is a substrate filter, characterized in that the chemically strengthened glass.
The method of claim 1,
Substrate filter, characterized in that the frame is printed on the lower edge of the transparent substrate.
The method of claim 1,
The self-adhesive optical bonding resin layer is a substrate filter, characterized in that the acrylic or silicone-based adhesive elastomer containing a urethane-based oligomer.
The method of claim 1,
The self-adhesive optical bonding resin layer is formed with a thickness of 300㎛ or less substrate filter.
The method of claim 1,
The substrate filter, characterized in that the pattern is formed on the self-adhesive optical bonding resin layer.
The method of claim 1,
The self-adhesive optical bonding resin layer comprises at least one of a color correction material or a near infrared absorbing material.
The method of claim 7, wherein
The color correction material substrate filter, characterized in that it comprises at least one of a neon cut (dyon cut) or a coloring pigment.
Display panel; And
And a substrate filter formed on an upper surface of the display panel and having a self-adhesive optical bonding resin layer attached to the display panel.

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