KR20110000177A - Display filter for display assemble having athermoelectric device - Google Patents

Abstract

PURPOSE: A display filter including thermoelectric elements is provided to prevent the generation of heat from a display unit by arranging a plurality of thermoelectric elements on the circumference of a heat transferring layer. CONSTITUTION: A heat transferring layer(11a) is formed on the surface of a transparent support(11c). The heat transferring layer shields electromagnetic waves. The heat transferring layer is formed based on either of a metal mesh pattern layer or a multilayered transparent conductive film. A plurality of thermoelectric elements(11b) is installed on the circumference of the heat transferring layer. A temperature sensor is installed in the heat transferring layer.

Description

DISPLAY FILTER FOR DISPLAY ASSEMBLE HAVING ATHERMOELECTRIC DEVICE}

The present invention relates to a display filter, and more particularly to a display filter having a thermoelectric element that can solve the heat generation or condensation phenomenon occurring in the display module.

Due to the development of display technology, various flat panel display devices are introduced to the market. The most representative display devices are liquid crystal display (LCD) monitors / TVs and plasma display (PDP) devices. At present, PDP and LCD have advantages and disadvantages in various aspects, and competition in the market is fierce.

In terms of image quality, the way PDPs produce color is more natural and smoother than LCD, but visually it feels clearer because LCD is brighter. In terms of response speed, PDP emits light while LCD emits indirect light. Therefore, the response speed is faster PDP and LCD response is slower. As a result, an afterimage occurs on the LCD.

In terms of weight, the PDP is heavier because the PDP is protected by protective glass on the screen surface and the LCD has only a display filter. However, LCDs are more susceptible to external shocks than PDPs because they consist of liquid crystal filters. In terms of screen reflectivity, the PDP is protected by protective glass on the screen surface, so there is a reflection on light.

Recently, LCD monitors / TVs have tended to adopt protective glass to protect display filters. However, when the protective glass is used in the LCD monitor / TV, condensation may occur inside the LCD monitor / TV due to a temperature difference inside / outside the protective glass. In general, in the case of PDP, heat is dissipated from the surface of the PDP module immediately after the power-on, and condensation can be easily and quickly removed. However, in the case of LCD, it is fundamentally difficult to remove condensation due to less heat dissipation in the LCD module.

On the other hand, the PDP or LCD monitor / TV generates high heat due to the large amount of current supplied from the display module when it is used for a long time. In a so-called direct-attach PDP in which an optical functional film is directly bonded onto the display module, there is a problem that the display filter is deformed by the generated heat. In the glass-type PDP, the heat generation problem is relatively small, but when it is used for a long time, the heat equilibrium between the display module and the display filter is reached and a little heat is generated. In particular, in the case of an outdoor PDP, dew condensation occurs due to an air temperature difference between the outside air and the module, and water droplets form on the surface of the display filter or the display module.

SUMMARY OF THE INVENTION The present invention has been proposed in the above background, and an object of the present invention is to provide a display filter having a thermoelectric element capable of solving heat generation or condensation.

In order to achieve the above object, a display filter having a thermoelectric element according to an aspect of the present invention, a transparent support, a heat transfer layer formed on the surface of the transparent support, and a plurality of heat transfer layer is installed around It includes a thermoelectric element of.

According to an additional aspect of the present invention, the heat transfer layer shields electromagnetic waves and is implemented by any one of a multilayer transparent conductive film in which a metal mesh pattern layer or a metal thin film (or a high refractive index transparent thin film) is laminated. According to another additional aspect, the heat transfer layer is characterized in that the temperature sensor is installed.

According to another additional aspect of the present invention, the display filter having a thermoelectric element further comprises a transparent substrate to be bonded or adhered, and an anti-reflection layer formed on the transparent substrate to prevent reflection of external light incident on the transparent substrate.

According to the above configuration, the display filter having a thermoelectric element of the present invention can prevent the heat generation or condensation phenomenon occurring in the display device through a plurality of thermoelectric elements installed around the heat transfer layer and the heat transfer layer. It has a useful effect.

In addition, the display filter having a thermoelectric element of the present invention is equipped with a temperature sensor in the heat transfer layer, there is a useful effect that can control the operation of the thermoelectric element by detecting the temperature of the filter through the temperature sensor.

In addition, the display filter having a thermoelectric element of the present invention is implemented by including a transparent substrate and an antireflection layer formed on the transparent substrate, thereby providing a useful effect of providing a display filter finished product to a manufacturer of a display device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

1 is an embodiment of a display filter with a thermoelectric device according to the present invention, and FIG. 2 is a sectional view taken along line I-I of the display filter with a thermoelectric device according to FIG. 1.

As shown in FIG. 1 and FIG. 2, the display filter 11 including the thermoelectric element of the present invention includes a heat transfer layer 11a, a plurality of thermoelectric elements 11b, and a transparent support 11c. .

The display filter 11 having a thermoelectric element is installed in front of a display module of a plasma display panel (PDP) device, a liquid crystal display (LCD) device, and an organic light emitting display device (OLED). It is suppressed that it becomes hot by the heat which generate | occur | produces, and the dew condensation phenomenon is suppressed which arises by the temperature difference between the air and outside air in a display module.

1 and 2, the heat transfer layer 11a is formed on the surface of the transparent support 11c, and a plurality of thermoelectric elements 11b are provided around the heat transfer layer 11a. For example, the heat transfer layer 11a may be implemented as a metal mesh pattern layer that shields electromagnetic waves generated from the display module of the plasma display panel (PDP) device.

Here, the metal mesh pattern layer may be formed by a method of forming a pattern by etching the metal or by coating a metal on the mesh pattern made of synthetic resin or metal fiber. As the material of the metal constituting the metal mesh pattern layer, any metal having excellent electrical conductivity and workability, for example, copper, chromium, nickel, silver, molybdenum, tungsten, aluminum, or the like can be used.

In another embodiment, the heat transfer layer 11a may be implemented as a multilayer transparent conductive film in which a metal thin film (or a high refractive index transparent thin film) is stacked. The multilayer conductive film layer may use a high refractive transparent thin film represented by indium tin oxide (ITO) for electromagnetic wave shielding. Examples of the multilayer conductive film layer include a multilayer thin film in which metal thin films such as gold, silver, copper, platinum, and palladium are alternately laminated with high refractive index transparent thin films such as indium oxide, ditin oxide, and zinc oxide.

A temperature sensor may be installed in the heat transfer layer 11a to detect the temperature of the display filter 11 having the thermoelectric element. According to this embodiment may include a control circuit unit for controlling the current supply to the plurality of thermoelectric elements (11b) according to the filter temperature value detected by the temperature sensor.

The thermoelectric element 11b is an element that absorbs heat at one of the junctions and generates heat at another junction when the direct current is applied to a circuit composed of two different metals of the same shape, and reverses the direction of current when the current is reversed. . The thermoelectric element 11b is disposed around the heat transfer layer 11a so as not to cover an effective screen of the display device (eg, PDP, LCD, OLED). The number of thermoelectric elements 11b may be selected according to the size of the heat transfer layer 11a.

The transparent support 11c supports the heat transfer layer 11a on which the thermoelectric element 11b is installed. The transparent support 11c is an organic film capable of thermosetting or UV curing, and is mainly a polymer-based material such as polyethylene terephthalate (PET). , Acryl, Polycarbonate (PC), Urethane Acrylate, Polyester, Epoxy Acrylate, Brominated Acrylate, PolyVinyl Chloride , PVC).

FIG. 3 is an enlarged view of a portion A shown in FIG. 2. As shown, part A is an exemplary view for schematically explaining the structure of a thermoelectric element provided in the heat transfer layer 11a. Reference numerals 31 and 32 are first metal materials of the same kind, and 33 are second metal materials of different types from 31, 32. Reference numeral 34 is an n-type semiconductor, and reference numeral 35 is a p-type semiconductor.

As shown in FIG. 3, for example, when a current flows from the n-type semiconductor 34 to the p-type semiconductor 35, electrons in the n-type semiconductor 34 are the second metal material 33 as shown in the arrow direction. Holes in the mold semiconductor 35 move to the first metal material 32. At this time, since both the hole and the electron move with heat from the first metal material 32 and the second metal material 33, the second metal material 33 is cooled to absorb heat from the surroundings, and the first metal material 32 ) Releases heat. On the other hand, if the direction of the current is reversed, the first metal material 31 absorbs heat and the second metal material 33 emits heat.

4 shows a display device equipped with a display filter having a thermoelectric device according to the present invention.

As shown, the display device according to the present embodiment is a plasma display panel (PDP) device. The plasma display panel (PDP) device is largely implemented as the display module 40 and the display filter 50 disposed in front of the display module 40.

In the display module 40, a discharge cell 42 is formed between the first substrate 41 and the second substrate 43, and the discharge cell 42 is filled with a neon (Ne) and xenon (Xe) mixed gas. In addition, fluorescent materials are applied to inner surfaces of the first and second substrates 41 and 43. Plasma display panel (PDP) device applies a strong electric field to the mixed gas filled in the discharge cell 42 through the driving circuit board 44, the ultraviolet light emitted from the mixed gas collides with the fluorescent material, the intrinsic visible and electromagnetic waves (EMI) ) Emits near-infrared (NIR), orange light that reduces color purity.

The display filter 50 protects the human body of the viewer by shielding electromagnetic waves (EMI), near infrared rays (NIR), and orange light emitted from the display module 40, and prevents malfunction of external devices such as a remote controller and improves color purity. Play a role. As shown, in one embodiment, the structure of the display filter 50 includes a transparent substrate 51, an antireflection layer 52, a thermoelectric filter portion 53, and a color correction layer 54. Can be implemented.

The transparent substrate 51 is a thermoelectric filter unit 53 is bonded or adhered, non-tempered glass or tempered glass or thermosetting or UV curable organic film mainly polymer-based material, such as polyethylene terephthalate (PolyEtylene Terephthalate , PET), Acryl, Polycarbonate (PC), Urethane Acrylate, Polyester, Epoxy Acrylate, Brominated Acrylate, Polyvinyl Chloride (PolyVinyl Chloride, PVC).

The antireflection layer 52 suppresses reflection of external light to improve visibility. The antireflection layer 52 is formed of a fluorine-based transparent polymer resin, a magnesium fluoride, a silicon resin, a silicon oxide thin film, or the like having a refractive index of 1.5 or less, preferably 1.4 or less, in the visible region. A single layer formed by the thickness can be used. In addition, the anti-reflection layer 52 is a multilayer of two or more thin films of inorganic compounds such as metal oxides, fluorides, silicides, borides, carbides, nitrides and sulfides having different refractive indices or organic compounds such as silicon resins, acrylic resins and fluorine resins. It may have a laminated structure.

The thermoelectric filter unit 53 suppresses the display filter 50 from being heated by the heat generated by the display module 40, and condensation may form on the display filter 50 due to a temperature difference between air and outside air in the display module. This serves to suppress the occurrence. In addition, the thermoelectric filter unit 53 may be implemented to block electromagnetic waves (EMI) incident from the display module 40.

The thermoelectric filter unit 53 may be implemented as a heat transfer layer formed on the surface of the transparent support, and a plurality of thermoelectric elements installed around the heat transfer layer. Here, the heat transfer layer may be implemented as a metal mesh pattern layer on which a metal pattern is formed. The metal mesh pattern layer may be formed by a method of forming a pattern by etching the metal or by coating a metal on a mesh pattern made of synthetic resin or metal fiber. As the material of the metal constituting the metal mesh pattern layer, any metal having excellent electrical conductivity and workability, for example, copper, chromium, nickel, silver, molybdenum, tungsten, aluminum, or the like can be used.

In another embodiment, the heat transfer layer of the thermoelectric filter unit 53 may be implemented as a multilayer conductive film layer in which a metal thin film or a high refractive index transparent thin film is stacked a plurality of times. The multilayer conductive film layer may use a high refractive transparent thin film represented by indium tin oxide (ITO) for electromagnetic wave shielding. Examples of the multilayer conductive film layer include a multilayer thin film in which metal thin films such as gold, silver, copper, platinum, and palladium are alternately laminated with high refractive index transparent thin films such as indium oxide, ditin oxide, and zinc oxide.

The color correction layer 54 improves the characteristics of the light incident from the display module 40. The color correction layer 54 may perform a color correction function to change or adjust the color balance by reducing or adjusting the amount of red (R), green (G), and blue (G). The dye may be included in the resin to form the coating directly on the surface of the thermoelectric filter unit 53.

The color correction layer 54 may be implemented to include a neon-cut dye to simultaneously perform the neon-cut function. In general, red visible light generated from plasma in a display panel tends to appear orange. The color correction layer 54 has a transmittance of 60% or more for an orange color having a wavelength range of 580 to 600 nm, thereby reducing the role of color correction to orange color and reducing the role of the near-infrared absorbing material of nickel complex and dimonium. 1 type selected from the group which consists of a compound pigment, a compound pigment | dye containing a copper ion and a zinc ion, a cyanine pigment, an anthraquinone pigment, a squarylium type, an azomethine type, an ocisonon, an azo type, or a benzylidene type compound The above can be used.

The color correction layer 54 may include a near infrared absorbing dye. Near-infrared absorbing pigments include nickel complexes and dimonium-based mixed pigments, compound dyes containing copper ions and zinc ions, cyanine dyes, anthraquinone dyes, squarylium-based, azomethine-based, ocisonol, azo-based or One or more types selected from the group consisting of benzylidene compounds can be used.

So far, the present specification has been described with reference to the embodiments shown in the drawings so that those skilled in the art to which the present invention pertains can easily understand and reproduce the present invention, but these are merely exemplary, Those skilled in the art will understand that various modifications and equivalent other embodiments are possible from the embodiments of the present invention. Accordingly, the true scope of the present invention should be determined only by the appended claims.

1 is an embodiment of a display filter having a thermoelectric device according to the present invention;

FIG. 2 is a sectional view taken along line I-I of the display filter with a thermoelectric device according to FIG. 1;

3 is an enlarged view of a portion A shown in FIG. 2;

4 shows a display device equipped with a display filter having a thermoelectric device according to the present invention.

<Description of Major Reference Marks>

11: Display Filter with Thermoelectric Element

11a: heat transfer layer 11b: thermoelectric element

11c: transparent support

50: display filter with a thermoelectric element

51: transparent substrate 52: antireflection layer

53: thermoelectric filter unit 54: color correction layer

Claims (5)

Transparent support; A heat transfer layer formed on a surface of the transparent support; A plurality of thermoelectric elements installed around the heat transfer layer; Display filter having a thermoelectric element comprising a. The method of claim 1, The heat transfer layer shields electromagnetic waves, Display filter having a thermoelectric element, characterized in that implemented by any one of a metal mesh pattern layer, or a multilayer transparent conductive film laminated a metal thin film and a high refractive index transparent thin film. The method of claim 1, Display filter having a thermoelectric element, characterized in that the heat transfer layer is provided with a temperature sensor. 4. The method according to any one of claims 1 to 3, Transparent substrate; And An anti-reflection layer formed on the transparent substrate and preventing reflection of external light incident on the transparent substrate; Display filter having a thermoelectric element further comprises. The method of claim 4, wherein A color correction layer formed on the transparent substrate to improve characteristics of light incident from the display module; Display filter having a thermoelectric element further comprises.

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