KR102116443B1 - Display device and method for manufacturing of the same - Google Patents

Abstract

A display device according to an embodiment of the present invention includes a display panel on which a color filter substrate and a TFT array substrate are bonded, and an image is displayed by light transmitted through the color filter substrate and emitted to the TFT array substrate. The TFT array substrate includes a display area and a non-display area in which an image is displayed, and is characterized by including a light blocking pattern coated on the non-display area of the TFT array substrate.

Description

Display device and its manufacturing method {DISPLAY DEVICE AND METHOD FOR MANUFACTURING OF THE SAME}

The present invention relates to a display device and a method for manufacturing the same, and more particularly, to a display device and a method for manufacturing the display device capable of preventing border light leakage or reflected light.

Recently, the importance of a flat panel display (FPD) has increased with the development of multimedia. In response, liquid crystal displays (LCDs), plasma display panels (PDPs), field emission displays (FEDs), organic light emitting display devices (Organic Light Emitting Display Devices), etc. Various flat-panel displays have been put into practical use.

Among them, the liquid crystal display device is driven using the optical anisotropy and polarization properties of the liquid crystal. Since the liquid crystal has a long structure and has a directionality in the arrangement of molecules, it is possible to artificially apply an electric field to the liquid crystal to control the direction of the molecular arrangement. Therefore, if the molecular alignment direction of the liquid crystal is arbitrarily adjusted, the liquid crystal The molecular arrangement is changed, and light is refracted in the direction of the molecular arrangement of the liquid crystal to express image information by optical anisotropy.

Currently, active matrix liquid crystal display devices (AM-LCD: Active Matrix LCD or less, abbreviated as liquid crystal display devices) in which a thin film transistor and a pixel electrode connected to the thin film transistor are arranged in a matrix manner are the most excellent in terms of resolution and video realization ability. It is getting attention. The liquid crystal display device comprises a color filter substrate on which a common electrode is formed, an array substrate on which a pixel electrode is formed, and a liquid crystal interposed between the two substrates. In such a liquid crystal display device, the common electrode and the pixel electrode are driven by an electric field applied up and down. It is excellent in characteristics such as transmittance and aperture ratio as a method of driving a liquid crystal.

1 is a cross-sectional view showing a conventional liquid crystal display device. Referring to FIG. 1, the conventional liquid crystal display device 5 includes a liquid crystal panel 25 with a liquid crystal layer (not shown) interposed between the TFT array substrate 20 and the color filter substrate 10. A backlight unit 40 that provides light is provided below the liquid crystal panel 25 to control the transmission of light provided by the backlight unit 40 to implement an image through the color filter substrate 10. Here, a printed circuit board (PCB) 30 is attached to one side so that a driving signal for controlling light transmission is applied to the TFT array substrate 20. The printed circuit board 30 is made of a flexible material and is provided by being bent toward the rear surface of the TFT array substrate 20. However, the conventional liquid crystal display device has a problem in that a non-display area in which an image is not displayed is widened and a bezel is enlarged due to an area in which a printed circuit board is bent.

Accordingly, the present invention provides a display device capable of reducing a bezel and preventing border light leakage or reflected light, and a manufacturing method thereof.

In order to achieve the above object, in the display device according to an embodiment of the present invention, a color filter substrate and a TFT array substrate are bonded, but an image is displayed by light transmitted through the color filter substrate and emitted to the TFT array substrate. It includes a display panel, the TFT array substrate includes a display area and a non-display area on which the image is displayed, characterized in that it comprises a light-shielding pattern coated on the non-display area of the TFT array substrate.

The non-display area surrounds the display area, and the light blocking pattern is coated on at least a portion of the non-display area.

It characterized in that it further comprises a color filter substrate bonded to the TFT array substrate, and a backlight unit located under the color filter substrate.

It characterized in that it further comprises an organic light emitting device located on the other surface of the TFT array substrate on which the light shielding pattern is formed.

It characterized in that it further comprises a polarizing plate covering the light blocking pattern formed on the TFT array substrate.

It is located between the light-shielding pattern and the polarizing plate, it characterized in that it further comprises a flattening film to planarize the step difference of the light-shielding pattern.

It characterized in that it further comprises a black stripe located on the surface of the TFT array substrate on which the light shielding pattern is formed, and a patterned retarder film located on the black stripe.

In addition, in the method of manufacturing a display device according to an embodiment of the present invention, a color filter substrate and a TFT array substrate are bonded, but a display panel through which the image is displayed by light transmitted through the color filter substrate and emitted to the TFT array substrate Forming a light-shielding pattern using an inkjet device on a non-display area of the TFT array substrate including a display area and a non-display area on which an image is displayed, and turning the head angle of the inkjet device to form a light-shielding pattern. Characterized by the step of coating.

The angle formed by the long axis of the head of the inkjet device with respect to the traveling direction of the head of the inkjet device is characterized in that it is less than 90 degrees.

The display device and the manufacturing method according to embodiments of the present invention can form a light-shielding pattern on a non-display area of the display device, thereby suppressing reflected light due to reflection of external light and preventing light leakage from leaking from the inside. There is an advantage. In addition, by forming a light shielding pattern using an inkjet device, a large width light shielding pattern can be formed by one printing. Therefore, there is an advantage that can simplify the manufacturing process of the light-shielding pattern and improve the tack time and productivity.

1 is a cross-sectional view showing a conventional liquid crystal display device.
2 is a plan view showing a display device according to a first exemplary embodiment of the present invention.
3 is a cross-sectional view taken along line I-I 'of FIG. 2;
4 is a cross-sectional view showing a display device according to a second exemplary embodiment of the present invention.
5 and 6 are cross-sectional views showing a display device according to a third embodiment of the present invention.
7 is a cross-sectional view showing a display device according to a fourth exemplary embodiment of the present invention.
8A and 8B are diagrams illustrating processes for manufacturing a light blocking pattern according to an embodiment of the present invention.
9 is a view showing a process of printing with an inkjet device.
10A to 11B are images showing light leakage according to the content of carbon black in a light-shielding pattern manufactured according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan view showing a display device according to a first exemplary embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line I-I 'of FIG. 2.

Referring to FIG. 2, the display device 100 according to the first exemplary embodiment of the present invention includes a display panel DP on which the TFT array substrate 110 and the color filter substrate 130 are bonded. The display panel DP includes a display area DA in which an image is displayed and a non-display area NDA in which an image is not displayed. The display device 100 of the present invention includes a light blocking pattern PBP blocking light in the non-display area NDA surrounding the display area DA.

In more detail, with reference to FIG. 3, the structure of the display device 100 illustrated in FIG. 2 will be described in detail. In this embodiment, a liquid crystal display device is described as an example to describe the display device.

The liquid crystal display according to the first exemplary embodiment of the present invention includes a TFT array substrate 110 on which a thin film transistor is formed and a display panel DP on which a color filter substrate 130 on which a color filter 140 is formed is bonded. In addition, in order to provide light to the display panel DP, a backlight unit BLU is positioned to face a lower portion of the display panel DP, that is, a rear surface of the color filter substrate 130.

In more detail, the TFT array substrate 110 is formed with a thin film transistor array. The thin film transistor array includes a plurality of data lines to which R, G, and B data voltages are supplied, a plurality of gate lines (or scan lines) to which the gate pulses (or scan pulses) are supplied by crossing the data lines, and a data line. A plurality of thin film transistors formed at intersections of the field and the gate lines, a plurality of pixel electrodes for charging the data voltage to the liquid crystal cells, and connected to the pixel electrodes to maintain the voltage of the liquid crystal cell And storage capacitors.

The common electrode that forms an electric field facing the pixel electrode is formed on the color filter substrate 130 in a vertical or horizontal electric field driving method such as a twisted nematic (TN) mode and a vertical alignment (VA) mode, and is IPS (In Plane Switching) It is formed on the TFT array substrate 110 together with the pixel electrode in a horizontal electric field driving method such as a mode and a FFS (Fringe Field Switching) mode.

R, G and B color filters 140 and a plurality of black matrices 135 are formed on the color filter substrate 130. The color filter 140 serves to convert light emitted from the backlight unit BLU into red, green, and blue. And, on the TFT array substrate 110 and the color filter substrate 130, an alignment film (not shown) for setting a pretilt angle of the liquid crystal is formed on an inner surface in contact with the liquid crystal layer (not shown), and the cell gap (Cell of the liquid crystal cell) A column spacer (not shown) for maintaining the gap) is formed. Each of the TFT array substrate 110 and the color filter substrate 130 has a polarizing plate on its outer surface. An upper polarizing plate 160a is provided on an outer surface of the TFT array substrate 110, and a lower polarizing plate 160b is provided on an outer surface of the color filter substrate 130.

The non-display area NDA corresponding to the edge of the TFT array substrate 110 displays a plurality of signal lines 115 for applying a signal to the display area DA and an external signal from the printed circuit board 125. A pad portion 120 applied to the area DA is provided. The printed circuit board 125 has flexible characteristics and is bent to the rear surface of the color filter substrate 130. Although not shown, the printed circuit board 125 is connected to a main board mounted on the back surface of the backlight unit BLU.

The plurality of signal lines 115 and the pad portion 120 provided in the non-display area NDA of the TFT array substrate 110 have a plurality of metal wires, so that reflected light reflected by the metal wires is reflected. Occurs and degrades the display quality. Also, light emitted from the backlight unit BLU may leak between the metal wires in the non-display area NDA to generate light leakage. Therefore, in the present invention, the light blocking pattern PBP is provided in the non-display area NDA of the TFT array substrate 110.

As illustrated in FIG. 2, the light blocking pattern PBP is formed in the non-display area NDA and is positioned to surround the display area DA. The light blocking pattern PBP is formed to a thickness of 1 to 100 μm to completely block external light or lower light. In addition, the light blocking pattern PBP has a width of 1 to 15 mm to completely cover the non-display area NDA.

The light blocking pattern PBP may include black pigment to block light. More specifically, the light-shielding pattern ink for manufacturing the light-shielding pattern (PBP) is made of a black pigment, a binder resin, a solvent and a dispersant. Carbon black may be used as the black pigment, and is not particularly limited as long as it is a light-shielding pigment. Further, examples of black pigments may include channel black, furnace black, thermal black, lamp black, and the like. The black pigment may be included in an amount of 6 to 11 vol% with respect to the entire shading pattern ink. For the light-shielding pattern ink, when the black pigment is 6 vol% or more, light-shielding property is improved, and when it is 11 vol% or less, inkjet printing is advantageous.

The binder resin may vary depending on the curing method. In the case of UV curing, it may be an acrylate-based monomer. For example, ethylene glycol diacrylate, 1,4-cyclohexanediol diacrylate, trimethylol triacrylate, trimethylol propane triacrylate, pentaerythritol triacrylate, tetraethylene glycol diacrylate, dipenta Erythritol triacrylate, dipentaerythritol tetraacrylate, sorbitol triacrylate, sorbitol tetraacrylate, vinyl acetate, triallyl cyanurate, and the like can be used. When the binder resin is UV cured, it may further include a photoinitiator. The photoinitiator is a material that generates a radical by light to trigger polymerization, and may use one or more selected from acetophenone-based compounds, biimidazole-based compounds, triazine-based compounds, and oxime-based compounds, and preferably oxime-based compounds. Can be used. In addition, when the binder resin is thermally cured, a polyester-based, polyurethane-based, epoxy-based resin, or the like can be used.

The solvent is ethyl acetate, n-butyl acetate, isobutyl acetate, ethylene glycol monomethyl ether acetate, ethylene glycol n-butyl ether acetate, diethylene glycol dimethyl ether, diethylene glycol monoethyl ether, dipropylene glycol monomethyl ether acetate , Diethylene glycol methyl ethyl ether, diethylene glycol ethyl ether acetate, dipropylene glycol n-butyl ether, tripropylene glycol n-propyl ether, tripropylene glycol methyl ether, propylene glycol methyl ether acetate, propylene glycol diacetate, propylene glycol Monomethyl ether, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, and ethyl 3-ethoxypropionate can be used.

The dispersant is for preventing the pigment component from being eluted, and a surfactant can be used. The dispersant may be, for example, a silicone-based, fluorine-based, ester-based, cationic, anionic, nonionic, amphoteric surfactant, or the like. In addition, fillers, curing agents, antioxidants, ultraviolet absorbers, etc. may be used as may be added as necessary. The aforementioned light blocking pattern PBP may be printed on a substrate by an inkjet method described later. A more detailed method of manufacturing the light blocking pattern PBP will be described later.

As described above, the display device according to the first embodiment of the present invention forms a light shielding pattern in a non-display area of the liquid crystal display device, thereby suppressing reflected light due to reflection of external light and preventing light leakage from leaking from the inside. There is an advantage to do.

4 is a cross-sectional view showing a display device according to a second exemplary embodiment of the present invention. In this embodiment, an organic light emitting display device including an organic light emitting device is described as an example to describe the display device.

The organic light emitting device according to the second embodiment of the present invention includes a TFT array substrate 210 on which a thin film transistor is formed, an organic EL device 250 formed on the TFT array substrate 210, and an organic EL device 250 It includes a display panel (DP) consisting of a sealing member (255) for sealing.

In more detail, the TFT array substrate 210 is formed with a thin film transistor array. The thin film transistor array includes a plurality of data lines to which R, G, and B data voltages are supplied, a plurality of gate lines (or scan lines) to which the gate pulses (or scan pulses) are supplied by crossing the data lines, and a data line. A plurality of switching thin film transistors (Switching Thin Film Transistor) formed in the intersection of the common lines, data lines and gate lines that are arranged side by side to supply a common voltage, between the switching thin film transistors and the common lines It includes a plurality of driving thin film transistors (Driving Thin Film Transistor), and a storage capacitor (Storage Capacitor) for maintaining the driving voltage.

The organic light emitting diode 250 includes a pixel electrode receiving a driving current from driving thin film transistors of the TFT array substrate 210, a counter electrode facing the pixel electrode, and an organic light emitting layer positioned between the pixel electrode and the counter electrode. do. Therefore, holes supplied from the pixel electrode and electrons supplied from the opposite electrode are combined in the organic light emitting layer to form excitons, which are hole-electron pairs, and self-emission by the energy generated when the excitons return to the ground state again. .

A polarizing plate 260 is provided on the outer surface of the TFT array substrate 210 to prevent the visibility from being deteriorated by external light. In addition, the TFT array substrate 210 has a plurality of signal lines 215 for applying a signal to the display area DA in the non-display area NDA corresponding to a border, as in the liquid crystal display device described above, and a printed circuit board. A pad unit 220 for applying an external signal to the display area DA from 225 is provided. The printed circuit board 225 has flexible characteristics and is bent to the rear surface of the sealing member 255. Although not shown, the printed circuit board 225 is connected to the main board mounted on the back surface of the sealing member 255.

The plurality of signal lines 215 and the pad portion 220 provided in the non-display area NDA of the TFT array substrate 210 have a plurality of metal wires, so that reflected light reflected by the metal wires is reflected. Occurs and degrades the display quality. In addition, light leaking from the organic light emitting device 250 may leak between metal wires in the non-display area NDA to generate light leakage. Therefore, in the present invention, the light blocking pattern PBP is provided in the non-display area NDA of the TFT array substrate 210. Since the light blocking pattern PBP is the same as the first embodiment described above, a description thereof will be omitted.

As described above, the display device according to the second embodiment of the present invention forms a light shielding pattern in a non-display area of the organic light emitting display device, thereby suppressing reflected light due to reflection of external light and leaking light emitted from the inside. There is an advantage that can be prevented.

5 and 6 are cross-sectional views illustrating a display device according to a third exemplary embodiment of the present invention. FIG. 5 shows the liquid crystal display device of FIG. 3, and FIG. 6 shows the organic light emitting display device of FIG. 4, and the same reference numerals are assigned to the same components, and the description thereof will be omitted.

Referring to FIG. 5, the liquid crystal display according to the third embodiment of the present invention further includes a planarization layer 170 between the TFT array substrate 110 on which the light blocking pattern PBP is formed and the upper polarizing plate 160a. The planarization layer 170 serves to planarize the step formed by the light blocking pattern PBP and is made of a transparent organic material. As an example of the organic material, polymer resins such as polyimide, polyacrylate, polyurethane, and polyester can be used. The planarization layer 170 is formed to have a thickness greater than at least the thickness of the light blocking pattern PBP so as to fill the step of the light blocking pattern PBP. Therefore, the flattening film 170 formed on the TFT array substrate 110 on which the light blocking pattern PBP is formed has an advantage of improving adhesion reliability of the upper polarizing plate 160a.

In addition, referring to FIG. 6, the organic light emitting display device according to the third embodiment of the present invention further includes a planarization layer 270 between the TFT array substrate 210 on which the light blocking pattern PBP is formed and the polarizing plate 260. Includes.

7 is a cross-sectional view showing a display device according to a fourth exemplary embodiment of the present invention. The display device illustrated in FIG. 7 has been partially added to the liquid crystal display device of FIG. 3, and the same reference numerals are assigned to the same components, and the description thereof will be omitted.

Referring to FIG. 7, the liquid crystal display device according to the fourth embodiment of the present invention may be a stereoscopic image display device using a stereoscopic technique. More specifically, a plurality of black stripes BS are positioned in the display area DA of the TFT array substrate 110 on which the light blocking pattern PBP is formed. Then, the upper polarizing plate 160a is positioned on the light blocking pattern PBP and the black stripe BS, and the patterned retarder film 185 is positioned on the upper polarizing plate 160a.

The black stripe BS is formed to correspond to the black matrix 135 formed on the color filter substrate 130. The black stripe (BS) serves to prevent crosstalk in which light of the left eye image transmitted through the display panel DP is emitted to the user's right eye or light of the right eye image is emitted to the user's left eye.

The patterned retarder film 190 positioned on the upper polarizer 160a has a patterned retarder 180 composed of a first retarder pattern 180a and a second retarder pattern 180b, which is a protective film 185. It consists of a structure provided on the top. The patterned retarder 180 includes first retarder patterns 180a and second retarder patterns 180b. The patterned retarder 180 is preferably disposed in a line-by-line form so as to form (+) 45 degrees and (-) 45 degrees with the absorption axis of the upper polarizing plate 160a. Each of the patterned retarders uses a birefringence medium to delay the phase of light by λ (wavelength) / 4. The optical axis of the first retarder pattern 180a and the optical axis of the second retarder pattern 180b are orthogonal to each other.

Accordingly, the first retarder pattern 180a is disposed on the display panel DP to face the line on which the left-eye image is displayed, thereby converting light of the left-eye image into first polarization (circular polarization or linear polarization). The second retarder pattern 180b is disposed on the display panel DP to face the line on which the right-eye image is displayed to convert light of the right-eye image into second polarization (circular polarization or linear polarization). For example, the first retarder pattern 180a may be implemented as a polarization filter that transmits left circularly polarized light, and the second retarder pattern 180b may be implemented as a polarization filter that transmits right circularly polarized light. Accordingly, through the polarization glasses provided with a polarizing film that passes only the first polarization component in the left eye and the polarizing film passing only the second polarization component in the right eye, the user sees only the left eye image to the left eye, and the right eye image to the right eye. Only the viewer can see the image displayed on the display panel (DP) as a stereoscopic image.

In this embodiment, a black stripe and a patterned retarder film are described as an example in the liquid crystal display, but the present invention is not limited thereto, and the black stripe and the patterned retarder film in the organic light emitting display device shown in FIG. 4 are not limited thereto. It may also be provided.

As described above, the display device according to the fourth embodiment of the present invention has a light shielding pattern in a non-display area of a stereoscopic image display device and a black stripe on the same layer, thereby suppressing crosstalk of a stereoscopic image. And it has the advantage of suppressing the generation of reflected light and light leakage.

Hereinafter, a method of manufacturing a light blocking pattern provided in the above-described display device will be described. Hereinafter, the manufacturing of the liquid crystal display device or the organic light emitting display device uses a known method, and a detailed description is omitted, and the process of printing the light blocking pattern of the present invention on a substrate will be described in detail.

8A and 8B are views showing a method of manufacturing a light-shielding pattern according to an embodiment of the present invention, and FIG. 9 is a view showing a process of printing with an inkjet device.

Referring to FIG. 8A, an inkjet device ID is loaded on a substrate SUB. The inkjet device ID includes an inkjet head HD that controls the printing of ink and a plurality of nozzles NZ through which ink is ejected from the inkjet head HD. The light-blocking pattern ink for manufacturing the above-described light-blocking pattern PBP is injected into the inkjet device ID. The light-shielding pattern ink is made of a black pigment, a binder resin, a solvent and a dispersant, and may further include an initiator in the binder resin according to the curing method.

Subsequently, the inkjet head HD of the inkjet device ID is twisted at a predetermined angle to be disposed on the substrate SB. In more detail, the long axis of the inkjet head HD is arranged to form an angle of less than 90 degrees with the traveling direction of the inkjet device ID. When the inkjet head HD is disposed at an angle, the pattern pitch of the ink discharged from the plurality of nozzles NZ spaced apart at regular intervals from the inkjet head HD can be reduced.

For example, referring to FIG. 9, when the inkjet head HD is not twisted at a certain angle, that is, when the ink is printed after the long axis of the inkjet head HD is vertically arranged in the traveling direction, the ink pattern is printed. The pitch is formed to about 508 μm. On the other hand, as shown in FIG. 8A, when ink is printed after arranging the inkjet head HD at a certain angle, the ink ejected from the nozzle NZ overlaps each other so that the pitch of the ink pattern does not exist. Therefore, the ink discharged from the plurality of nozzles NZ is printed in one large width ink pattern. At this time, the angle formed by the long axis of the inkjet head HD with respect to the traveling direction of the inkjet head HD may be less than 90 degrees, and may be variously adjusted according to the spreadability of the ink and the interval between the nozzles NZ.

Subsequently, the ink jet head HD is disposed on the substrate SB at a predetermined angle, and then the light blocking pattern ink is discharged to print the light blocking pattern PBP. In the light-shielding pattern ink, the light-shielding pattern inks discharged from the plurality of nozzles NZ form a large light-shielding pattern PBP. When the light blocking pattern (PBP) is printed, UV light curing or thermal curing is performed according to a curing method of the composition of the light blocking pattern (PBP) to finalize the light blocking pattern (PBP).

Referring to FIG. 8B, a light-shielding pattern PBP is printed on a display panel DP using a method of manufacturing a light-shielding pattern PBP using the inkjet method described above to display a display device according to an embodiment of the present invention. To manufacture. As described above, in the manufacturing method of the display device according to the exemplary embodiment of the present invention, the light blocking pattern is formed by turning the inkjet head of the inkjet device to form a light blocking pattern, thereby forming a large light blocking pattern by one printing. Therefore, there is an advantage that can simplify the manufacturing process of the light-shielding pattern and improve the tack time and productivity.

Hereinafter, a light-shielding pattern is formed on a display device using the above-described method for manufacturing a light-shielding pattern, and light leakage according to the content of carbon black in the light-shielding pattern is measured and shown in FIGS. 10A, 10B, 11A, and 11B. In addition, the optical density and thickness of the light-shielding pattern manufactured by FIGS. 11A and 11B were measured and are shown in Table 1 below.

Carbon black content (vol%) Thickness (㎛) Optical density Light leakage Light-shielding pattern of Fig. 11a 6.3 6.8 4.42 Light leakage observed Light-shielding pattern of Fig. 11b 11.25 7.93 4.83 No light leakage observed

10A and 11A are light-shielding patterns using a light-shielding pattern ink having a carbon black content of 6.3 vol%, and FIGS. 10B and 11B are light-shielding using a light-shielding pattern ink having a carbon black content of 11.25 vol% It is a pattern. 10A and 11A, when the content of carbon black was 6.3 vol%, it was confirmed that the lower wiring was reflected and light leakage occurred. On the other hand, referring to Figures 10b and 11b, when the content of carbon black is 11.25 vol%, it was confirmed that the light leakage is completely blocked.

As described above, the display device and the manufacturing method according to embodiments of the present invention form a light-shielding pattern in a non-display area of the display device, thereby suppressing reflected light due to reflection of external light and leaking light emitted from the inside. There is an advantage that can be prevented. In addition, by forming a light shielding pattern using an inkjet device, a large width light shielding pattern can be formed by one printing. Therefore, there is an advantage that can simplify the manufacturing process of the light-shielding pattern and improve the tack time and productivity.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the technical configuration of the present invention described above is in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art to which the present invention pertains. It will be understood that it can be practiced. Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive. In addition, the scope of the invention is indicated by the claims below, rather than the detailed description. In addition, all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be construed as being included in the scope of the present invention.

100: display device 110: TFT array substrate
120: pad section 125: printed circuit board
130: color filter substrate 135: shading pattern
BLU: Backlight unit DP: Display panel
DA: display area NDA: non-display area

Claims (12)

A color filter substrate and a TFT array substrate are bonded, and a display panel that displays an image by light transmitted through the color filter substrate and emitted to the TFT array substrate is included.
The TFT array substrate includes a display area and a non-display area in which an image is displayed, and includes a light blocking pattern coated on the non-display area of the TFT array substrate,
The TFT array substrate includes a first surface facing the color filter substrate and a second surface opposite to the first surface,
The light blocking pattern is located on the second surface of the TFT array substrate,
The shading pattern is formed of a shading pattern ink containing a black pigment,
The black pigment, the display device characterized in that it comprises 6vol% to 11vol% of the 100vol% of the shading pattern ink.
According to claim 1,
The non-display area surrounds the display area, and the light blocking pattern is coated on at least a portion of the non-display area.
According to claim 1,
A color filter substrate bonded to the TFT array substrate; And
And a backlight unit located under the color filter substrate.
According to claim 1,
And an organic electroluminescent element located on the other surface of the TFT array substrate on which the light shielding pattern is formed.
According to claim 1,
And a polarizing plate covering the light blocking pattern formed on the TFT array substrate.
The method of claim 5,
And a flattening layer positioned between the light blocking pattern and the polarizing plate and planarizing a step difference between the light blocking patterns.
According to claim 1,
A black stripe located on the surface of the TFT array substrate on which the light blocking pattern is formed; And
And a patterned retarder film positioned on the black stripe.
Forming a display panel on which a color filter substrate and a TFT array substrate are bonded, and an image is displayed by light transmitted through the color filter substrate and emitted to the TFT array substrate; And
Coating a light-shielding pattern on a non-display area of the TFT array substrate including a display area and a non-display area on which an image is displayed using an inkjet device, and coating the light-shielding pattern by turning the head angle of the inkjet device; ,
The TFT array substrate includes a first surface facing the color filter substrate and a second surface opposite to the first surface,
The light blocking pattern is located on the second surface of the TFT array substrate,
The shading pattern is formed of a shading pattern ink containing a black pigment,
The black pigment, a method of manufacturing a display device, characterized in that it comprises 6vol% to 11vol% of the 100vol% of the shading pattern ink.
The method of claim 8,
A method of manufacturing a display device, characterized in that an angle formed by the long axis of the head of the inkjet device with respect to the direction of travel of the head of the inkjet device is less than 90 degrees. According to claim 1,
A display device, characterized in that the second surface of the TFT array substrate is a display surface on which an image is displayed.
According to claim 1,
The first surface of the TFT array substrate further includes a pad portion and a printed circuit board connected to the pad portion,
The light blocking pattern is a display device, characterized in that overlaps the pad portion and the printed circuit board.
According to claim 1,
The first surface of the TFT array substrate further includes a plurality of signal lines for applying a signal to the display area,
The light blocking pattern is a display device characterized in that it overlaps the plurality of signal lines.

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