KR102231687B1 - Display panel and display apparatus having the same - Google Patents

Abstract

In a display panel and a display device having the same, the display panel includes a first display substrate including a pixel portion provided in the display area and an identification code portion provided in a peripheral area surrounding the display area, and a second display panel facing the first display panel. And a display substrate, a light shielding film disposed to overlap the identification code portion when viewed from the top, and a gray scale control layer interposed between the first display substrate and the second display substrate.

Description

DISPLAY PANEL AND DISPLAY APPARATUS HAVING THE SAME}

The present invention relates to a display panel and a display device having the same, and more particularly, to a display panel capable of reducing a bezel width of a display device, and a display device having the same.

In general, a liquid crystal display device is a liquid crystal display panel composed of an array substrate, a color filter substrate, a liquid crystal layer interposed between the array substrate and the color filter substrate, and a sealant interposed between the array substrate and the color filter substrate to couple the two substrates. Includes.

A titling process of forming an ID mark or identification code on an array substrate for a liquid crystal display is involved for the efficiency of the process by automating the entire process of the liquid crystal display.

However, in a structure in which the width of the peripheral area cannot be sufficiently secured, such as a narrow bezel structure in which the width of the peripheral area of the liquid crystal display panel is reduced, a space for forming an ID mark or an identification code is insufficient.

An object of the present invention is to provide a display panel capable of forming a recognition code portion without increasing a bezel width.

Another object of the present invention is to provide a display device employing the above display panel.

A display panel according to an aspect of the present invention includes: a first display substrate including a pixel portion provided in a display area and an identification code portion provided in a peripheral area surrounding the display area; A second display substrate facing the first display substrate; A light shielding film disposed so as to overlap with the recognition code portion when viewed from the top; And a gray scale control layer interposed between the first display substrate and the second display substrate.

A display device according to an aspect of the present invention includes a display panel that displays an image; And a printed circuit board electrically connected to the display panel to supply a driving signal to the display panel.

The display panel includes: a first display substrate including a pixel portion provided in a display area; A second display substrate facing the first display substrate; A recognition code unit provided to correspond to a peripheral area surrounding the display area; A light shielding film disposed so as to overlap with the recognition code portion when viewed from the top; And a gray scale control layer interposed between the first display substrate and the second display substrate. In addition, the first display substrate is provided on the uppermost side to define a surface on which the image is displayed.

According to the present invention, by disposing the recognition code unit in the light blocking area on which the light blocking film is formed, it is possible to prevent an increase in the width of the bezel on the pad area side by the recognition code unit.

In addition, by forming the recognition code portion as a reflective pattern, it is possible to form the recognition code portion in a peripheral area other than the pad area, thereby improving the degree of freedom of the location of the identification code portion.

1 is a perspective view illustrating a display panel according to an exemplary embodiment of the present invention.
2 is a plan view illustrating the display panel of FIG. 1.
3 is an enlarged view showing a recognition code unit shown in FIG. 2.
4 is a cross-sectional view taken along line II′ of FIG. 3.
5 is a cross-sectional view of a display panel according to an exemplary embodiment of the present invention.
6 is a plan view of a display unit according to an exemplary embodiment of the present invention.
7 is a cross-sectional view taken along line II-II′ shown in FIG. 6.
8 is an assembly cross-sectional view of a display device according to an exemplary embodiment of the present invention.
9 is a perspective view of the display panel shown in FIG. 8.
10 is a cross-sectional view taken along line III-III′ shown in FIG. 9.
11 is a cross-sectional view of a display panel according to an exemplary embodiment of the present invention.

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

1 is a perspective view illustrating a display panel according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a display panel 500 according to the present embodiment includes a first display substrate 100, a second display substrate 200, a liquid crystal layer 300, and a sealing member 400.

The first display substrate 100 includes a plurality of pixels and signal lines electrically connected to the plurality of pixels. The second display substrate 200 is disposed to face the first display substrate 100 to expose a portion of the first display substrate 100. The liquid crystal layer 300 is interposed between the first and second display substrates 100 and 200, and the arrangement is changed by an electric field formed between the first and second display substrates 100 and 200. . The sealing member 400 is formed between the first and second display substrates 100 and 200 to seal the liquid crystal layer 300 so that the liquid crystal layer 300 does not leak to the outside.

In FIG. 1, a liquid crystal display panel in which the liquid crystal layer 300 is formed as a gray level control layer between the first and second display substrates 100 and 200 is illustrated as an example of the display panel 500, but is limited thereto. It doesn't work. That is, the display panel 500 may be formed of any one of a display panel including an organic light-emitting device, a display panel including an electrowetting device, and a display panel including an electrophoretic device.

FIG. 2 is a plan view illustrating the display panel of FIG. 1, and FIG. 3 is an enlarged view illustrating a recognition code unit illustrated in FIG. 2.

2 and 3, the display panel 500 according to the present embodiment is formed outside the display area DA so as to surround the display area DA and the display area DA for displaying an image. It is divided into a peripheral area SA. The peripheral area SA includes a light blocking area BA formed to surround the display area DA and a pad area PA formed on one side of the light blocking area BA. The light blocking area BA is defined as an area in which the light blocking layer is formed among areas facing the first display substrate 100 and the second display substrate 200, and the pad area PA is the first display substrate 100 may be defined as a region formed by extending in one direction than the second display substrate 200.

A pixel portion may be provided in the display area DA, and the pixel portion may include a plurality of pixels PX, a gate line GL, and a data line DL. Each pixel PX includes a thin film transistor Tr connected to a corresponding gate line GL and a data line DL, and a liquid crystal capacitor Clc connected to the thin film transistor Tr. However, the configuration of each pixel PX may not be limited thereto.

A light blocking layer (not shown) and the sealing member 400 may be formed in the light blocking area BA. In addition, a recognition code unit 450 may be provided in the light blocking area BA. The identification code part 450 may be provided in a partial area of the light blocking area BA positioned between the pad area PA and the display area DA. As shown in FIG. 3, the identification code unit 450 may include a panel ID mark 451 and an identification code 453.

The panel ID mark 451 is formed of a combination of numbers and letters, and may include a unique number of a display panel. The identification code 453 includes information on the characteristics and history of the display panel, and may be formed in the form of a veri code. The identification code 453 is included in the characteristic information of the components of the display panel 500, such as the thin film transistor Tr, and the manufacturing history of the display panel 500, such as a model name, a manufacturing place, and a manufacturing time. May include information about.

Connection pads (not shown) connected to the data lines DL may be formed in the pad area PA.

4 is a cross-sectional view taken along line II′ of FIG. 3.

Referring to FIG. 4, the display panel 500 includes a first display substrate 100, a second display substrate 200, a liquid crystal layer 300, a sealing member 400, and a light shielding film 500.

The first display substrate 100 includes a first base substrate 110 and a pixel portion 120 provided on the first base substrate 110.

The first base substrate 110 is made of a transparent material such as glass, quartz, synthetic resin, and the like. The first base substrate 110 has a plate shape and, when viewed in plan view, has a substantially rectangular shape. The first base substrate 110 is divided into the display area DA and the peripheral area SA, and the peripheral area SA is divided into the light blocking area BA and the pad area PA.

The pixel portion 120 may be formed in the display area DA, and specifically, may have a structure in which a plurality of pixels are formed in a matrix form. The pixel unit 120 may include a thin film transistor and a pixel electrode electrically connected to a drain terminal of the thin film transistor. The pixel electrode may be made of a transparent conductive material.

The first display substrate 100 further includes an identification code unit 450. The identification code part 450 is formed in the light blocking area BA.

The second display substrate 200 includes a second base substrate 210 and a common electrode 220 provided on the second base substrate 210.

The second base substrate 210 is coupled to face the first base substrate 110. In particular, the second base substrate 210 is disposed to correspond to the display area DA and the light blocking area BA of the first base substrate 110, and the second base substrate is in the pad area PA. 210 is not placed. The common electrode 220 is provided on the second base substrate 210 to correspond to the display area DA.

The second display substrate 200 further includes a light blocking layer 250 provided on the second base substrate 210 corresponding to the light blocking area BA. When viewed from the top, the identification code part 450 is fully covered by the light shielding film 250.

The sealing member 400 is disposed to correspond to the light blocking area BA, and is interposed between the first display substrate 100 and the second display substrate 200. Here, the identification code part 450 may partially overlap the sealing member 400 when viewed in a plan view.

As an example of the present invention, the identification code part 450 may include a reflective pattern made of a metallic material. The area where the mark is engraved is made of a metal film, and the metal film is removed from the remaining part, so that the identification code part 450 is formed as a reflective pattern. Accordingly, the light generated from the light source unit 10 is reflected from the portion where the mark is engraved by the identification code unit 450 and then provided to the recognition unit 30. Accordingly, the recognition unit 30 may receive the reflected light and read the recognition code unit 450.

When the identification code part 450 is full-covered by the light blocking film 250, when the identification code part 450 is formed in a transmission pattern, the light irradiated from the light source part 10 is the light blocking film 250. ) Is absorbed or reflected and cannot be supplied to the recognition unit 30, making it impossible to read.

Accordingly, when the identification code part 450 is fully covered by the light blocking layer 250, the identification code part 450 may be formed in a reflective pattern.

The reflective pattern is any one of a process of forming the gate line GL (shown in FIG. 2) or the data line DL (shown in FIG. 2) in the display area DA of the first display substrate 100. It can be formed simultaneously through one process. Accordingly, it is possible to prevent an additional process from being added to form the identification code part 450 as the reflective pattern.

5 is a cross-sectional view of a display panel according to an exemplary embodiment of the present invention. However, among the constituent elements shown in FIG. 5, the same reference numerals are used for the same constituent elements as the constituent elements shown in FIG. 4, and detailed descriptions thereof will be omitted.

Referring to FIG. 5, when viewed in a plan view, the identification code part 450 may partially overlap the light blocking layer 250. That is, the identification code part 450 may be formed to extend over the light blocking area BA and the pad area PA and partially covered by the light blocking layer 250.

In this case, the identification code part 450 may be formed of either a reflective pattern made of a metallic material or a transmissive pattern including a transmissive part. The reflective pattern has a shape in which a mark is engraved on a metal film, the remaining part has a shape in which the metal film is removed, and the transmission pattern has a shape in which the mark is engraved from the metal film is removed, and the remaining part is made of the metal film. It has a shape made of a membrane. When the identification code part 450 is formed in a reflective pattern, both the light source part 10 and the recognition part 30 are provided on the first display substrate 100 side, but the identification code part 450 is a transparent pattern. When formed as, the light source unit 10 and the recognition unit 30 are separately provided on the first and second display substrates 100 and 200, respectively.

6 is a plan view of a display unit according to an exemplary embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line II-II′ shown in FIG. 6.

6, a display unit 900 according to an embodiment of the present invention includes a display panel 500, first and second printed circuit boards 710 and 720, and first and second tape carrier packages (hereinafter, TCP) (610, 620). The display panel 500 may include first and second display substrates 100 and 200, and first and second gate driving circuits 810 and 820 may be integrated in the first display substrate 100. .

In this embodiment, the display panel 500 is divided into a display area DA for displaying an image and a peripheral area SA formed outside the display area DA so as to surround the display area DA. The peripheral area SA includes a light blocking area BA formed to surround the display area DA and a pad area PA formed on one side of the light blocking area BA. The light blocking area BA is defined as an area in which the light blocking layer is formed among areas facing the first display substrate 100 and the second display substrate 200, and the pad area PA is the first display substrate 100 may be defined as a region formed by extending in one direction than the second display substrate 200.

A pixel portion may be provided in the display area DA, and the pixel portion may include a plurality of pixels PX, a plurality of gate lines GL, and a plurality of data lines DL. Each pixel PX includes a thin film transistor Tr connected to a corresponding gate line GL and a data line DL, and a liquid crystal capacitor Clc connected to the thin film transistor Tr. However, the configuration of each pixel PX may not be limited thereto.

The first and second gate driving circuits 810 and 820 are provided on the first display substrate 100 to correspond to the light blocking area BA. In particular, the first gate driving circuit 810 is disposed adjacent to one end of the plurality of gate lines GL, and the second gate driving circuit 820 is disposed at the other end of the plurality of gate lines GL. It is placed adjacent to.

Each of the first and second gate driving circuits 810 and 820 is electrically connected to the gate lines GL to apply a gate signal to the gate lines GL. The gate signal is applied to the thin film transistor Tr through the gate lines GL to turn the thin film transistor on or off. Each of the first and second gate driving circuits 810 and 820 includes a plurality of driving transistors formed simultaneously with the thin film transistor Tr.

In the present embodiment, a structure in which the first and second gate driving circuits 810 and 820 are respectively provided at both ends of the gate lines GL is disclosed, but the first and second gate driving circuits 810 and 820 ) May be provided together at one end side of the plurality of gate lines GL.

The identification code part 450 may be disposed adjacent to any one of the first and second gate driving circuits 810 and 820. 6 and 7 illustrate a structure in which the identification code part 450 is disposed adjacent to the first gate driving circuit 810, but is not limited thereto.

As shown in FIG. 7, the identification code part 450 may be provided in the light blocking area BA and may be fully covered by the light blocking layer 250. In addition, the identification code part 450 is disposed so as not to overlap with the first gate driving circuit 810 when viewed in a plan view. However, as another example, the identification code unit 450 may be disposed to overlap with any one of the first and second gate driving circuits 810 and 820.

As an example of the present invention, the identification code part 450 may include a reflective pattern made of a metallic material. The area where the mark is engraved is made of a metal film, and the metal film is removed from the remaining part, so that the identification code part 450 is formed as a reflective pattern. Accordingly, the light generated from the light source unit 10 is reflected from the portion where the mark is engraved by the identification code unit 450 and then provided to the recognition unit 30. Accordingly, the recognition unit 30 may receive the reflected light and read the recognition code unit 450.

The first and second printed circuit boards 710 and 720 are disposed adjacent to the pad area PA of the display panel 500. The first printed circuit board 710 is electrically connected to the display panel 500 through the first TCPs 610, and the second printed circuit board 720 connects the second TCPs 630 to each other. It is electrically connected to the display panel 500 through. The first and second TCPs 610 and 630 are attached to the pad area PA of the first display substrate 100.

A plurality of first driving chips 620 are mounted on the first TCPs 610, respectively, and a plurality of second driving chips 640 are mounted on the second TCPs 630, respectively. The first and second driving chips 620 and 640 are electrically connected to the data lines DL to apply a data signal to the data lines DL. The data signal is applied to the thin film transistor Tr through the data lines DL, and is applied to the liquid crystal capacitor Clc when the thin film transistor Tr is turned on.

8 is an assembly cross-sectional view of a display device according to an exemplary embodiment of the present invention.

Referring to FIG. 8, a display device 1500 according to an exemplary embodiment includes a display unit 1400, a backlight unit 1100, a bottom chassis 1200, and a mold frame 1300.

The display unit 1400 includes a display panel 1450 displaying an image, a printed circuit board 1430 providing a driving signal to the display panel 1450, and the display panel 1450 and the printed circuit board 1430 It includes a connection film 1440 electrically connecting the.

The display panel 1450 includes a first display substrate 1410 including a plurality of pixels, a second display substrate 1420 facing and coupled to the first display substrate 1410, and the first display substrate 1410. ) And a liquid crystal layer (not shown) interposed between the second display substrate 1420.

When viewed in plan view, a driving chip (not shown) for applying a data signal to the data line may be provided on at least one side of the first display substrate 1410. The driving chip generates a data signal to be applied to the data line of the display panel 1450 in response to an external signal. The external signal is a signal supplied from the printed circuit board 1430, and the external signal may include an image signal, various control signals, driving voltage, and the like.

The first display substrate 1410 may include a gate driving circuit provided on at least one side and the other side to apply a gate signal to the gate line. The gate driving circuit may be formed on the other side through a thin film process of forming the first display substrate 1410. Accordingly, the gate driving circuit may be built in the display panel 1450.

The backlight unit 1100 includes a light source unit (not shown) that generates light and a light guide plate 1110 that receives the light from the light source unit and guides the light toward the display unit 1400.

In an embodiment of the present invention, the backlight unit 1100 may be an edge type backlight unit. That is, the light source unit of the backlight unit 1100 provides the light to at least one side surface of the light guide plate 1110 under the display panel 1400, and the light guide plate 1110 transmits the light to the display panel. Guide to the (1400) side.

The light guide plate 1110 has a rectangular plate shape and provides light received through the side surface to the display panel 1450.

The backlight unit 1100 includes a plurality of optical sheets 1130 provided between the light guide plate 1110 and the display panel 1450 and a reflective plate 1120 disposed under the light guide plate 1110. Include more.

The plurality of optical sheets 1130 are formed of a diffusion sheet for diffusing light and at least one condensing sheet for condensing light to improve luminance and viewing angle of light emitted to an emission surface. Although not shown in the drawings, the plurality of optical sheets 1130 may further include a protective sheet provided on the uppermost side of the sheets. The reflective plate 1140 is provided under the light guide plate 1110 and serves to reflect light leaked from the light guide plate 1110 and re-enter the light guide plate 1110 again.

The bottom chassis 1200 includes a bottom portion 1210 on which the light source unit, a reflective plate 1120 and the light guide plate 1110 are mounted, and a sidewall 1220 extending in a vertical direction from the bottom portion 1210. As an example of the present invention, the bottom chassis 1200 may be made of a metal material having light reflectivity.

The mold frame 1300 is interposed between the display unit 1400 and the backlight unit 1100 to support the display panel 1450. The mold frame 1300 includes a support part 1310 for supporting the display panel 1450 and a sidewall 1320 extending in a vertical direction from the support part 1310.

In the support part 1310, a receiving groove 1330 for accommodating the printed circuit board 1430 is formed in a shape parallel to the side wall 1320.

8, the support part 1310 supports the second display substrate 1420 of the display panel 1450. The second display substrate 1420 is interposed between the first display substrate 1410 and the backlight unit 1100, and the first display substrate 1410 is provided on the uppermost side so that the upper surface thereof is exposed.

The flexible film 1440 attached to the pad area of the first display substrate 1410 is bent downward, and the printed circuit board 1430 attached to the flexible film 1440 is in the receiving groove 1330. It is accommodated and is arranged in parallel with the sidewall 1320.

Although not shown in the drawing, a fixing tape (not shown) for fixing the display panel 1450 to the mold frame 1300 may be further attached to an upper edge of the display panel 1450.

Although not shown in the drawing, in another embodiment, in place of the fixing tape, the display device 1500 is coupled to face the mold frame 1300 and includes a top chassis covering the edge of the display panel 1450. It may contain more.

9 is a perspective view of the display panel shown in FIG. 8, and FIG. 10 is a cross-sectional view taken along line III-III′ shown in FIG. 9.

Referring to FIG. 9, the first display substrate DS1 may be divided into a display area DA and a peripheral area SA. The display area DA is an area in which an image is displayed by receiving an electrical signal. The display area DA includes a plurality of pixel areas PXA and a non-display area NDA.

The plurality of pixel areas PXA are areas of the display area DA in which the plurality of pixels are respectively disposed. The plurality of pixel areas PXA are formed to be spaced apart from each other. In this embodiment, the plurality of pixels are disposed on the first display substrate DS1.

The non-display area NDA is an area in which a plurality of gate lines, a plurality of data lines, and a plurality of thin film transistors are provided among the display area DA so that an image is not substantially displayed.

The peripheral area SA includes the light blocking area BA and the pad area PA, and is an area in which an image is not displayed. The light blocking area BA surrounds the display area DA on a plane. The pad area PA is formed on the first display substrate 1410 and is exposed by the second display substrate 1420. Driving chips may be directly disposed in the pad area PA, or a separate flexible film may be combined.

The identification code part 450 is provided on the first display substrate 1410 to correspond to the light blocking area BA.

9 and 10, the display panel 1450 includes a first display substrate 1410, a second display substrate 1420, a liquid crystal layer 300, a sealing member 400, and a light shielding film 1415. do.

The first display substrate 1410 includes a first base substrate 1411 and a pixel portion 1412 provided on the first base substrate 1411.

The first base substrate 1411 is made of a transparent material such as glass, quartz, synthetic resin, or the like. The first base substrate 1411 has a plate shape and, when viewed in plan view, has a substantially rectangular shape. The first base substrate 1411 is divided into the display area DA and the peripheral area SA, and the peripheral area SA is divided into the light blocking area BA and the pad area PA.

The pixel portion 1412 may be formed in the display area DA, and specifically, may have a structure in which a plurality of pixels are formed in a matrix form. The pixel portion 1412 may include a thin film transistor and a pixel electrode electrically connected to a drain terminal of the thin film transistor. The pixel electrode may be made of a transparent conductive material.

The first display substrate 1410 further includes an identification code unit 450. The identification code part 450 is formed in the light blocking area BA. The first display substrate 1410 further includes a light blocking layer 1415 provided on the first base substrate 1411 corresponding to the light blocking area BA. The identification code part 450 is provided on the light blocking film 1415, and when viewed in a plan view, the identification code part 450 is fully covered by the light blocking film 250.

The second display substrate 1420 includes a second base substrate 1421 and a common electrode 1422 provided on the second base substrate 1421.

The second base substrate 1421 is coupled to face the first base substrate 1411. In particular, the second base substrate 1421 is disposed to correspond to the display area DA and the light blocking area BA of the first base substrate 1411, and the second base substrate is in the pad area PA. (1421) is not deployed. The common electrode 1422 is provided on the second base substrate 1421 to correspond to the display area DA.

The sealing member 400 is disposed to correspond to the light blocking area BA, and is interposed between the first display substrate 100 and the second display substrate 200. Here, the identification code part 450 may partially overlap the sealing member 400 when viewed in a plan view.

As an example of the present invention, the identification code part 450 may include a reflective pattern made of a metallic material. The area where the mark is engraved is made of a metal film, and the metal film is removed from the remaining part, so that the identification code part 450 is formed as a reflective pattern. In this case, the light source unit 10 (shown in FIG. 4) and the recognition unit 30 (shown in FIG. 4) may be provided on the side of the second display substrate 1420. Accordingly, the light generated from the light source unit 10 is reflected from the portion where the mark is engraved by the identification code unit 450 and then provided to the recognition unit 30. Accordingly, the recognition unit 30 may receive the reflected light and read the recognition code unit 450.

11 is a cross-sectional view of a display panel according to an exemplary embodiment of the present invention. However, among the constituent elements shown in FIG. 11, the same reference numerals are used for the same constituent elements as the constituent elements shown in FIG. 10, and detailed descriptions thereof will be omitted.

Referring to FIG. 11, the second display substrate 1420 includes an identification code part 450 formed in the light blocking area BA. That is, the identification code unit 450 has the same configuration as the display panel illustrated in FIG. 10 except that the identification code unit 450 is provided on the side of the second display substrate 1420.

Meanwhile, the light blocking layer 1415 is formed on the first display substrate 1410 to correspond to the light blocking area BA. The identification code part 450 is full-covered by the light shielding film 1415 when viewed in a plan view.

In this case, the identification code part 450 may be formed of a reflective pattern made of a metallic material. The reflective pattern has a shape in which a mark is engraved on a metal film, and the metal film is removed from the rest.

The light source unit 10 (shown in FIG. 4) and the recognition unit 30 (shown in FIG. 4) may be provided on the side of the second display substrate 1420. Accordingly, the light generated from the light source unit 10 is reflected from the portion where the mark is engraved by the identification code unit 450 and then provided to the recognition unit 30. Accordingly, the recognition unit 30 may receive the reflected light and read the recognition code unit 450.

Although not shown in the drawing, when the light shielding film 1415 is provided on the second base substrate 1321, the identification code part 450 is provided on the light shielding film 1415 or on the light shielding film 1415 Correspondingly, it may be provided on the first base substrate 1411. In this case, the identification code unit 450 may be formed of a reflective pattern, and the light source unit 10 and the recognition unit 30 may be provided on the first display substrate 1410 side.

Although described with reference to the above embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention described in the following claims. I will be able to.

100: first display substrate 110: first base substrate
120: pixel portion 200: second display substrate
210: first base substrate 220: common electrode
250: light shielding film 300: liquid crystal layer
400: sealing member 450: recognition code portion
500: display panel

Claims (11)

A first base substrate including a display area and a peripheral area adjacent to the display area;
A signal line disposed on the display area of the first base substrate;
A thin film transistor disposed on the display area of the first base substrate;
A recognition code unit disposed on the peripheral area of the first base substrate;
A second base substrate facing the first base substrate; And
Including a light shielding film overlapping the recognition code portion when viewed from the top,
The identification code unit:
A code part with an ID mark; And
Including a peripheral portion adjacent to the code portion,
The light shielding layer is a display panel that overlaps at least the peripheral portion when viewed in a plan view. The display panel of claim 1, wherein the identification code unit includes a metal layer. The display panel of claim 2, wherein at least a part of the identification code part does not include the metal layer. The display panel of claim 1, wherein the ID mark includes at least one of a number and a letter. The method of claim 1, wherein the signal line comprises a gate line connected to the thin film transistor and a data line connected to the thin film transistor,
The identification code part and the gate line include the same metal material. The display panel of claim 1, wherein a part of the identification code part does not overlap the light shielding layer when viewed in a plan view. The display panel of claim 1, further comprising a sealing member interposed between the first base substrate and the second base substrate to couple the first and second base substrates. The display panel of claim 7, wherein the sealing member overlaps the identification code part when viewed in a plan view. A first display substrate including a thin film transistor disposed in a display area and an identification code part disposed in a peripheral area adjacent to the display area;
A second display substrate facing the first display substrate; And
And a light shielding film overlapping the peripheral region,
The identification code unit includes at least one of letters and numbers,
A display device in which a portion of the identification code portion adjacent to the letter or number overlaps the light shielding layer when viewed on a plane. The display device of claim 9, further comprising a sealing member interposed between the first display substrate and the second display substrate to couple the first and second display substrates. 11. The display device of claim 10, wherein the sealing member overlaps the part of the identification code part when viewed from the top.

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