KR100904906B1 - Method for manufacturing a filter for shielding electromagnetic interference and method for manufacturing a display device provided with the filter for shielding electromagnetic interference - Google Patents

Abstract

The present invention relates to a method for producing an electromagnetic wave shielding filter. The method for manufacturing an electromagnetic shielding filter includes i) providing a gravure roll with a groove in the form of a mesh, ii) filling a conductive paste in the groove, iii) facing the gravure roll and opposite the direction of rotation of the gravure roll. Providing a blanket roll that rotates to, iv) transferring the conductive paste to the blanket roll while rotating the gravure roll, v) providing a glass substrate, vi) transferring the conductive paste onto the glass substrate while the blanket roll moves over the glass substrate. Coating on the substrate, and vii) firing the conductive paste to form a single layer shielding member for shielding electromagnetic waves on the glass substrate.

Electromagnetic shielding filter, manufacturing method, offset, display device

Description

METHOD FOR MANUFACTURING A FILTER FOR SHIELDING ELECTROMAGNETIC INTERFERENCE AND METHOD FOR MANUFACTURING A DISPLAY DEVICE PROVIDED WITH THE FILTER FOR SHIELDING ELECTROMAGNETIC INTERFERENCE}

The present invention relates to a method of manufacturing an electromagnetic wave shielding filter using an offset printing method and a method of manufacturing a display device including an electromagnetic wave shielding filter.

Recently, various kinds of display devices have been developed. For example, a plasma display device (PDP), a liquid crystal display device (LCD), an organic light emission display device (OLED), and the like are being developed. Such display devices are used for many products that require image display because they are thin and light in weight.

Meanwhile, electromagnetic interference (EMI) is emitted from a plurality of electronic elements included in the display device. EMI can cause the display device to malfunction or harm the human body. Therefore, an electromagnetic shielding filter is attached to the display device to shield the EMI.

An object of the present invention is to provide a method of manufacturing an electromagnetic shielding filter using an offset method. In addition, an object of the present invention is to provide a method of manufacturing a display device having the above-mentioned filter for shielding electromagnetic waves.

Method for manufacturing an electromagnetic shielding filter according to an embodiment of the present invention, i) providing a gravure roll (gravure roll) formed with a groove in the form of a mesh, ii) filling a conductive paste into the groove, iii) gravure Providing a blanket roll facing the roll and rotating in a direction opposite to the rotational direction of the gravure roll, iv) transferring the conductive paste to the blanket roll while rotating the gravure roll, v) providing a glass substrate Step, vi) applying a conductive paste onto the glass substrate as the blanket roll moves over the glass substrate, and vii) firing the conductive paste to form a single layer shielding member for electromagnetic shielding on the glass substrate; .

In the step of forming the shielding member, the conductive paste may be baked at a temperature of 500 ° C to 540 ° C. Filling the conductive paste into the grooves may include discharging the conductive paste from the dispenser into the grooves. In providing the gravure roll, the groove may comprise i) one or more first groove portions extending in one direction, and ii) one or more second groove portions that intersect the first groove portion. An angle formed between the tangential line formed by the gravure roll and the blanket roll and the first groove portion may be 20 ° to 70 °. The angle can be 32 ° to 60 °.

According to an exemplary embodiment of the present invention, a method of manufacturing a display device includes: i) providing a gravure roll having a groove formed in a mesh shape, ii) filling a conductive paste in the groove, iii) facing the gravure roll and facing the gravure roll. Providing a blanket roll that rotates in a direction opposite to the rotational direction of iv) iv) transferring the conductive paste to the blanket roll while rotating the gravure roll, v) providing a glass substrate, vi) the blanket roll is over the glass substrate Applying a conductive paste on the glass substrate while moving, vii) firing the conductive paste to form a single layer shielding member for shielding electromagnetic waves on the glass substrate, viii) providing a display panel displaying an image, And ix) opposing the glass substrate to the display panel.

In the step of forming the shielding member, the conductive paste may be baked at a temperature of 500 ° C to 540 ° C. Filling the conductive paste into the grooves may include discharging the conductive paste from the dispenser into the grooves. In providing the gravure roll, the groove may comprise i) one or more first groove portions extending in one direction, and ii) one or more second groove portions that intersect the first groove portion. An angle formed between the tangential line formed by the gravure roll and the blanket roll and the first groove portion may be 20 ° to 70 °. The angle can be 32 ° to 60 °.

Compared with other processes, the electromagnetic wave shielding filter can be manufactured using an offset printing method which is simpler and inexpensive.

In addition, when the display device including the above-described electromagnetic wave shielding filter is manufactured, the electromagnetic wave shielding effect of the display device can be maximized.

With reference to the accompanying drawings, it will be described embodiments of the present invention to be easily implemented by those skilled in the art. As can be easily understood by those skilled in the art, the following embodiments are only intended to illustrate the present invention, and various forms without departing from the spirit and scope of the present invention. It can be modified. Where possible the same or similar parts are represented with the same reference numerals in the drawings.

All terms including technical terms and scientific terms used below have the same meaning as those commonly understood by those skilled in the art. Terms defined in advance are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

When a portion is referred to as being "above" another portion, it may be just above the other portion or may be accompanied by another portion in between. In contrast, when a part is mentioned as "directly above" another part, no other part is intervened in between.

It is to be understood that the terms first, second and third are used to describe various parts, components, regions, layers and / or sections, but are not limited to these. These terms are only used to distinguish one part, component, region or section from another part, component, region or section. Accordingly, the first portion, component, region, layer or section described below may be referred to as the second portion, component, region, layer or section without departing from the scope of the invention.

1 to 5 show a method of manufacturing an electromagnetic shielding filter 100 according to an embodiment of the present invention in order. The electromagnetic wave shielding filter 100 may be manufactured using the offset printing apparatus 500. Hereinafter, a method of manufacturing the electromagnetic wave shielding filter 100 will be described in order with reference to FIGS. 1 to 5.

First, FIG. 1 schematically shows a process of discharging the conductive paste 10a from the dispenser 51. The enlarged upper circle in FIG. 1 shows the enlarged surface of the gravure roll 55, and shows the surface shape of the gravure roll 55 in the lower enlarged circle in FIG.

As shown in FIG. 1, the offset printing apparatus 500 includes a dispenser 51, a doctor 53, a gravure roll 55, and a blanket roll 57. The offset printing method uses the offset printing apparatus 500 and includes an off process and a set process. In the off step, the conductive paste 10a is removed from the gravure roll 55. In the set process, the removed conductive paste 10a is applied onto the glass substrate 20. The dispenser 51 discharges the conductive paste 10a at predetermined time intervals. The conductive paste 10a discharged from the dispenser 51 is accommodated in the groove 551 formed in the gravure roll 55.

The conductive paste 10a may include an organic material having elasticity, a conductive metal, a solvent, a binder, and the like. A solvent having a boiling point of 200 ° C. or more may be used as a solvent, and a glass frit may be used as a binder. The organic material may include an acrylate resin, an acrylic resin, polyester, polyurethane, oligomer, and the like. The organic substance is removed in the process of baking the glass substrate 20. The conductive paste 10a may further include a black pigment.

Since the conductive metal can collect electromagnetic waves passing through the electromagnetic shielding filter 100, the electromagnetic shielding effect is excellent. Silver, copper, nickel, or an alloy thereof can be used as the conductive metal. Since the conductive metals are excellent in electrical conductivity, they can effectively shield electromagnetic waves.

As shown in the upper enlarged circle of FIG. 1, the groove 551 is formed on the surface of the gravure roll 55. The groove 551 includes a first groove portion 5511 and a second groove portion 5513. The first groove portion 5511 and the second groove portion 5513 cross each other. The first groove portion 5511 and the second groove portion 5513 meet each other to form an angle α1. The angle α1 may be 60 ° to 120 °. If the angle α1 is too large or too small, the distance between the first groove portion 5511 and the second groove portion 5513 may be too close so that the aperture ratio of the shielding member 10 (shown in FIG. 6) may be too small. . More preferably, the angle α1 may be between 80 ° and 100 °. In this case, the distance between the first groove portion 5511 and the second groove portion 5513 can be properly maintained. Moreover, it is most preferable if angle (alpha) 1 is substantially 90 degrees.

In the embodiment of the present invention, the mesh-shaped shield member 10 (shown in FIG. 6) is manufactured using the gravure roll 55 (shown in FIG. 3) having the grooves 551 in the mesh form. If the rotational direction of the gravure roll 55 and the direction in which the grooves 551 extend at right angles cross each other, the conductive paste 10a contained in the grooves 551 does not fall well from the grooves 551. That is, since the conductive paste 10a is not well influenced by the rotational force of the gravure roll 55, it is difficult to remove the conductive paste 10a from the gravure roll 55. On the other hand, when the rotation direction of the gravure roll 55 and the direction in which the grooves 551 extend coincide with each other, the conductive paste 10a may be well separated from the grooves 551 by the rotational force of the gravure roll 55.

As illustrated in the upper enlarged circle of FIG. 1, the first grooves 5511 adjacent to each other and the second grooves 5513 adjacent to each other meet to form a polygon 111. Polygon 111 is substantially square in shape. In this case, the shape of the shielding member 10 (shown in FIG. 6) can be optimized to maximize the electromagnetic shielding effect.

The lengths of the four sides forming the polygon 111 are substantially the same. Since the lengths of the four sides are substantially the same, the shape of the shield member 10 is regular. As a result, since the intensity of light emitted through the opening 105 (shown in FIG. 6) corresponding to the polygon 111 is uniform, a uniform image can be displayed. Meanwhile, although the polygon 111 is shown in a square shape in the enlarged circle of FIG. 1, this is merely to illustrate the present invention, and the present invention is not limited thereto. Therefore, it is also possible to form a polygon 111 of a different shape, such as rectangular, rhombus.

As shown in the upper enlarged circle of FIG. 1, the resolution of the image can be increased by forming the width W of the first groove portion 5511 small to maximize the aperture ratio. To this end, the width W of the first groove portion 5511 may be greater than 0 and 50 μm or less. In this case, the shielding member 10 (shown in FIG. 6) formed by the 1st groove part 5511 cannot be observed visually. When the width W of the first groove portion 5511 is too large, the aperture ratio is small, and the resolution of the image is lowered. More specifically, the width W of the first groove part 5511 is preferably 15 μm to 30 μm.

On the other hand, the average pitch P of the first groove portion 5511 can be larger than 0 and 500 µm or less. When the average pitch P of the first grooves 5511 is too large, the shielding member 10 is not closely formed, and thus electromagnetic waves may be emitted to the outside without being absorbed. As a result, the electromagnetic shielding effect is lowered. In more detail, it is preferable that the average pitch P of the shielding member 10 is 200 micrometers-400 micrometers.

When the groove is formed only in a direction coinciding with the rotation direction of the gravure roll, it is impossible to form the shield member in the form of a mesh as in the embodiment of the present invention. That is, the mesh shape may have a rectangular shape, and since the grooves must be formed in the direction orthogonal to the rotation direction of the gravure roll, it is difficult to transfer the conductive paste to the blanket roll.

As shown in the lower enlarged circle of FIG. 2, the gravure roll 55 is provided with a first groove portion 5511 and a second groove portion 5513 extending in an oblique direction and intersecting with each other. Therefore, since the groove part is not formed in the direction orthogonal to the rotation direction of the gravure roll 55, the conductive paste 10a can be transferred to the blanket roll 57 efficiently.

The first groove portion 5313 extending in an oblique direction forms an angle α2 with a tangent J formed when the gravure roll 55 meets the blanket roll 57. Here, the angle α2 may be 20 ° to 70 °. If the angle α2 is too small or too large, a groove portion is formed in a direction close to the direction parallel to the tangent J, so that the conductive paste 10a cannot be efficiently transferred to the blanket roll 57. More specifically, the angle α2 may be 35 ° to 55 °.

Next, FIG. 2 schematically illustrates a process of removing the overflow of the conductive paste 10a from the groove 551 by using the doctor 53.

As shown in FIG. 2, since the amount of the conductive paste 10a contained in the groove 551 is large, the conductive paste 50a may overflow to the outside of the groove 551. Therefore, the conductive paste 10a overflowed by the doctor 53 is removed while rotating the gravure roll 55 in the arrow direction (counterclockwise direction). Since the doctor 53 is in contact with the outer surface of the gravure roll 55, the conductive paste 10a that has overflowed to the outside of the groove 551 can be efficiently removed. Therefore, the conductive paste 10a can be appropriately filled in the groove 551 of the gravure roll 55 without overflowing.

3 schematically illustrates a process of transferring the conductive paste 10a contained in the groove 551 to the blanket roll 57.

As shown in FIG. 3, the blanket roll 57 is located opposite the gravure roll 55. The blanket roll 57 rotates in the direction opposite to the rotation direction of the gravure roll 55 (clockwise). As a result, the conductive paste 10a contained in the groove 551 is transferred onto the blanket roll 57 while the gravure roll 55 meets the blanket roll 57. Therefore, the conductive paste 10a adheres to the outer surface of the blanket roll 57.

4 schematically illustrates a process in which the blanket roll 57 applies the conductive paste 10a onto the glass substrate 20.

As shown in FIG. 4, the blanket roll 57 applies the conductive paste 10a onto the glass substrate 20 while moving on the glass substrate 20 in the direction of the arrow. Therefore, a conductive paste 10a in the form of a mesh for forming the shielding member 10 (shown in FIG. 1) is formed on the glass substrate 20.

5 schematically illustrates a process of baking the glass substrate 20 to which the conductive paste 10a is applied. The conductive paste 10a may be dried before the firing process.

As shown in FIG. 5, the organic substance contained in the conductive paste 10a is removed as shown by the arrow by placing the glass substrate 20 in the heating furnace 90 and heating at a temperature range of 500 ° C. to 540 ° C. . When the heating temperature of the glass substrate 20 is less than 500 degreeC, the organic substance contained in the electrically conductive paste 10a is not removed easily, and the electrical conductivity of the shielding member manufactured is too low. Therefore, the shielding member cannot exert the electromagnetic shielding function well. On the contrary, when the heating temperature of the glass substrate 20 exceeds 540 degreeC, the impact resistance of the glass substrate 20 which is mainly tempered glass falls. In the embodiment of the present invention, the glass substrate 20 is fired at a relatively low temperature. Since the shielding member which consists of a single layer is formed, the glass substrate 20 can be baked at comparatively low temperature, the stiffening loosening phenomenon of the glass substrate 20 can be prevented, and the impact resistance of the glass substrate 20 can be maintained.

As mentioned above, the shielding member can be directly formed by heating the glass substrate 20 and removing organic substance. That is, a single layer electromagnetic wave shielding filter is directly manufactured without performing a separate process such as etching the conductive paste 10a. Therefore, since the process is simple, the manufacturing cost of the electromagnetic shielding filter can be reduced.

Since the offset printing method used in the case of manufacturing the electromagnetic wave shielding filter according to the embodiment of the present invention includes a firing process, the resin substrate which is weak in heat cannot be used in the offset printing method. Therefore, the glass substrate 20 is used instead of the resin substrate. Other contents of the offset printing method can be easily understood by those skilled in the art, and detailed description thereof will be omitted.

When manufacturing the electromagnetic wave shielding filter using the photolithography method instead of the offset printing method, the copper foil is first adhered to the resin film. Next, a dry film resist is laminated on copper foil, and exposure, image development, an etching, a peeling process, etc. are performed in order to form a pattern. Therefore, the manufacturing process is complicated and the productivity is not good.

In addition, in the case of manufacturing the electromagnetic shielding filter using the plating method, a pattern must be formed on the resin film and copper should be plated to obtain a desired electrical conductivity. However, waste liquid generated during plating causes environmental pollution.

The above-mentioned possoriography method and plating method cannot form a pattern directly on a glass substrate. For example, the plating method is carried out by winding the base material in the form of a roll and immersing it in a plating bath. Since the glass substrate cannot be wound in the form of a roll, it is impossible to plate the glass substrate to form a shielding member. Moreover, when using a glass substrate, since a pattern must be adhere | attached to a glass substrate, a process is complicated. The offset printing method can solve the above problem. That is, in the offset printing method, since the shielding member 10 formed of a single layer is formed directly on the glass substrate 20, the process can be simplified and the manufacturing cost can be reduced. On the other hand, in a method such as electroless plating, since a shielding member made of a plurality of layers is formed, manufacturing costs are high. On the other hand, in the offset printing method, no harmful substances are discharged, and thus no pollution is caused.

6 shows an electromagnetic shielding filter 100 manufactured according to the method for manufacturing an electromagnetic shielding filter according to FIGS. 1 to 5. The enlarged source of FIG. 6 shows the inside of the electromagnetic wave shielding filter 100 on an enlarged scale.

As shown in FIG. 6, the electromagnetic shielding filter 100 includes a glass substrate 20, a shielding member 10, an edge layer 30, and a ground member 40. The shield member 10 is connected to the ground member 40 and grounded. Therefore, the shielding member 10 can absorb and remove electromagnetic waves. As a result, the shielding member 10 functions as a filter for shielding electromagnetic waves. The edge layer 30 is formed along the edge of the glass substrate 20, and the ground member 40 is positioned at both ends in the x-axis direction of the glass substrate 20 to ground the shield member 10.

As shown in the enlarged circle of FIG. 6, the shielding member 10 is formed in a mesh form. The electromagnetic wave shielding filter 100 is mainly used for a display device. Therefore, the shielding member 10 is formed in a mesh form so that an image emitted from the display device is displayed to the outside. Since the shielding member 10 has an opening portion 105, electromagnetic waves can be blocked while passing an image through the opening portion 105.

FIG. 7 illustrates a display device 200 including the electromagnetic shielding filter 100 of FIG. 6. 7 illustrates an internal cross-sectional structure of the display device 200.

As shown in FIG. 7, the electromagnetic shielding filter 100 is fixed on the display panel 600 using the fixing member 110. Therefore, the electromagnetic wave shielding filter 100 may be stably stored in the display device 200.

7 shows a plasma display panel as the display panel 600. The plasma display panel shown in the enlarged source of FIG. 7 is merely for illustrating the present invention, but the present invention is not limited thereto. Therefore, other display panels requiring an electromagnetic shielding filter can be used.

The display panel 600 includes a first substrate 610, a second substrate 620, a display electrode 680, an address electrode 640, a partition 660, a phosphor layer 670, a dielectric layer 630, and a protective film ( 635 and black layer 651. The inside of the display panel 600 is filled with discharge gas. The first substrate 610 and the second substrate 620 face each other. The partition wall 660 forms a plurality of discharge cells, and a phosphor layer is formed inside the discharge cell. The dielectric layer 630 protects the address electrode 640 and the display electrode 680 from electrons. The passivation layer 635 protects the dielectric layer 630 disposed thereon.

When a voltage is applied to the address electrode 640 and the display electrode 680, a discharge occurs between the address electrode 640 and the display electrode 680. Ultraviolet rays generated by the discharge impinge on the phosphor layer 670 and the visible light is emitted from the phosphor layer 670. On the other hand, the black layer 651 is formed on the partition 660 to improve the light pressure ratio. The black layer 651 is positioned between the first substrate 610 and the second substrate 620. Since the black layer 651 is formed on the partition wall 660 where the light is not emitted, the loss of the light emitted from the phosphor layer 670 may be reduced.

As shown in the enlarged source of FIG. 7, the electromagnetic wave shielding filter 100 is positioned on the display panel 600. Accordingly, the electromagnetic wave shielding filter 100 may shield electromagnetic waves emitted from the display panel 600. Since the shielding member 10 is in contact with the second substrate 620, the shielding member 10 is not exposed to the outside. Therefore, the shielding member 10 can be prevented from being damaged, and the appearance deterioration due to the shielding member 10 can be prevented.

Hereinafter, the present invention will be described in more detail through experimental examples. These experimental examples are only for illustrating the present invention, and the present invention is not limited thereto.

Experimental Example  One

A conductive paste comprising 7 wt% of a polymer resin, 7 wt% of butylcarbitol acetate (BCA), 4 wt% of glass powder, 80 wt% of silver, and 2% of a dispersant was prepared. Wherein the polymer resin has a molecular weight of 25000, methyl acrylate (MA), butyl methacrylate (BM), hydroxyethyl methacrylate (hydroxyl methacrylate), and MMA (methlmethacrylate, methyl methacrylate) ) By weight was 30: 20: 10: 40, respectively. Glass powder is a Bi-based glass powder, the average particle size was 1.5㎛. Silver had a spherical shape, and the average particle size was 1.0 mu m. As the dispersant, an organic dispersant containing an amine group was used.

Experimental Example  2

As a mixture of the conductive paste, a black pigment was used to prepare a conductive paste without using a dispersant. The conductive paste contained 3 wt% glass powder, 78% silver, and 5 wt% black pigment. As the black pigment, Co-based black pigment was used. The remaining experimental conditions were the same as in Experimental Example 1 described above.

Experimental Example  3

A conductive paste was prepared without using a black section pigment. Except using 12 wt% BCA, the experimental conditions are the same as in Experimental Example 2 described above.

Experiment result

A conductive paste having a mesh form was formed on a glass substrate by using the same offset printing apparatus as that shown in FIG. 1.

8 is a photograph showing a state in which the above-mentioned conductive paste is formed on a glass substrate. The left photograph of FIG. 8 shows the conductive paste magnified 200 times, and the right photograph of FIG. 8 shows the conductive paste magnified 1200 times. The width of the conductive face was 20 µm, and the pitch was 300 µm. Next, the conductive paste formed on the glass substrate in the firing process was maintained at 500 ° C. for 15 minutes to evaporate the organics.

It is a photograph which shows the state in which the shielding member which passed through the baking process was formed on the glass substrate. The left photograph of FIG. 9 shows the shielding member magnified 200 times, and the right photograph of FIG. 9 shows the shielding member magnified 1400 times. The conductive paste was reduced in width to 15 µm while undergoing plastic fixing, and the pitch was 300 µm, which was unchanged.

The performance of the electromagnetic wave shielding filter manufactured according to Experimental Examples 1 to 3 of the present invention described above was evaluated. This is shown in Table 1 below.

As described in Table 1, the optical properties, electrical properties, mechanical properties, chemical resistance and blackness of the electromagnetic wave shielding filter according to Experimental Examples 1 to 3 of the present invention were all excellent. Therefore, it was possible to provide an electromagnetic shielding filter having a simple manufacturing process by using an offset printing method.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

1 to 5 are schematic diagrams sequentially showing a method of manufacturing an electromagnetic shielding filter according to an embodiment of the present invention.

FIG. 6 is a schematic perspective view of an electromagnetic shielding filter manufactured by using the method for manufacturing the electromagnetic shielding filter of FIGS. 1 to 5.

FIG. 7 is a schematic perspective view of a display device including the filter for shielding electromagnetic waves of FIG. 6.

8 is an enlarged photograph of a glass substrate offset printed according to the first experimental example of the present invention.

9 is an enlarged photograph of the electromagnetic shielding filter manufactured according to the first experimental example of the present invention.

Claims (8)

Providing a grooved gravure roll in the form of a mesh, Filling the groove with a conductive paste, Providing a blanket roll facing the gravure roll and rotating in a direction opposite to the direction of rotation of the gravure roll, Transferring the conductive paste to the blanket roll while rotating the gravure roll, Providing a glass substrate, Applying the conductive paste onto the glass substrate while the blanket roll moves over the glass substrate, and Baking the conductive paste to form a shielding member of a single layer that shields electromagnetic waves on the glass substrate; Method of manufacturing a filter for electromagnetic shield comprising a. The method of claim 1, In the step of forming the shielding member, the conductive paste is fired at a temperature of 500 ℃ to 540 ℃ manufacturing method for an electromagnetic shielding filter. The method of claim 1, Filling the conductive paste into the groove includes discharging the conductive paste from the dispenser into the groove, In the step of providing the gravure roll, The groove is, At least one first groove extending in one direction, and At least one second groove intersecting the first groove Including; The angle formed by the tangential line formed by the gravure roll and the blanket roll and the first groove portion is 20 ° to 70 ° manufacturing method of the electromagnetic shielding filter. The method of claim 3, The angle is 32 to 60 ° manufacturing method of the electromagnetic shielding filter. Providing a grooved gravure roll in the form of a mesh, Filling the groove with a conductive paste, Providing a blanket roll facing the gravure roll and rotating in a direction opposite to the direction of rotation of the gravure roll, Transferring the conductive paste to the blanket roll while rotating the gravure roll, Providing a glass substrate, Applying the conductive paste onto the glass substrate while the blanket roll moves over the glass substrate, Baking the conductive paste to form a shielding member of a single layer that shields electromagnetic waves on the glass substrate, Providing a display panel displaying an image, and Opposing the glass substrate to the display panel Method of manufacturing a display device comprising a. The method of claim 5, In the forming of the shielding member, the conductive paste is baked at a temperature of 500 ° C to 540 ° C. The method of claim 5, Filling the conductive paste into the groove includes discharging the conductive paste from the dispenser into the groove, In the step of providing the gravure roll, The groove is, At least one first groove extending in one direction, and At least one second groove intersecting the first groove Including; The angle formed by the tangent formed by the gravure roll and the blanket roll and the first groove is 20 ° to 70 °. The method of claim 7, wherein The angle is 32 to 60 ° manufacturing method of the display device.

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