KR20170004086A - Display device - Google Patents

Abstract

The present invention relates to a display device for effectively realizing a borderless design with little or no borders of a screen. According to embodiments of the present invention, the display device includes: a display panel where a first substrate and a second substrate are attached together; a middle cabinet located on a side of the display panel; and a first polarizing plate located on the top of the first substrate and extended longer than the end of the first substrate to prevent exposure of a pad part on the second substrate.

Description

Display device {DISPLAY DEVICE}

These embodiments relate to a display device having a design with little or no screen border.

2. Description of the Related Art [0002] As an information society has developed, there has been a growing demand for a display device for displaying images. Recently, a liquid crystal display device, a plasma display device, (Organic Light Emitting Display Device), and the like.

Nowadays, there is a growing demand for thin bezel designs. Particularly, there is a growing demand for a borderless design in which an outer cover or the like is not visible at the edge of the screen.

As described above, in the borderless design in which the border of the screen is not present or there is almost no border of the screen, the screen becomes full and the actual sensibility of the image can be further increased.

However, in order to implement the borderless design, there are many difficulties such as a large change in the key structure of the display module, an additional process, or a change in the structure of the cover to be covered by the display module.

In addition, in order to prevent light from leaking into an undesired area, a light shielding structure must be provided in the display device. Such a light shielding structure is a great obstacle to the implementation of the borderless design.

It is an object of the present embodiments to provide a display device that effectively realizes a borderless design with no or no border of the screen.

Another object of the present embodiments is to provide a display device having a slim structure while implementing a borderless design.

Another object of the present invention is to provide a display device which is simple in manufacturing a panel while implementing a borderless design.

It is still another object of the present embodiments to provide a display device having a light-shielding structure suitable for a borderless design implementation.

The present embodiments can provide a display device that efficiently realizes a borderless design having no or no border of a screen.

The display device includes a display panel having a first substrate and a second substrate bonded together, a middle cabinet disposed on a side surface of the display panel, and a second cabinet disposed on the first substrate and extending longer than an end of the first substrate, A first polarizing plate for preventing exposure of the pad portion on the substrate, and the like.

Such a display device may further include a light shielding member attached to the back surface of the first polarizing plate and facing the pad portion on the second substrate.

The light shielding member may be attached to the rear surface of the first polarizer, and may be positioned between the side surface of the first substrate and the side surface of the middle cabinet, or extended to the upper portion of the middle cabinet.

When the light shielding member is extended to the upper portion of the middle cabinet, one surface of the light shielding member is attached to the back surface of the first polarizing plate, and the other surface of the light shielding member is attached to the upper portion of the middle cabinet.

In the display device according to the present embodiments, the first polarizing plate located on the first substrate may extend to the upper portion of the middle cabinet through a point opposite to the pad portion on the second substrate, But may be located on the side of the middle cabinet.

According to the embodiments as described above, it is possible to provide a display device that effectively realizes a borderless design having no or no border of a screen.

According to these embodiments, it is possible to provide a display device having a more slim structure while implementing a borderless design.

According to the embodiments, it is possible to provide a display device that is simple in manufacturing a panel while implementing a borderless design.

According to these embodiments, it is possible to provide a display device having a light-shielding structure suitable for implementing a borderless design.

1 is a view schematically showing an appearance of a display device according to the present embodiments.
2 is a cross-sectional view of a display device according to the present embodiments.
3 is another cross-sectional view of the display device according to the present embodiments.
4 is another cross-sectional view of the display device according to the present embodiments.
5 and 6 are cross-sectional views showing a driver integrated circuit of a display device according to the present embodiments.
FIG. 7A is a cross-sectional view and a screen front view of a display device implemented with a non-borderless design.
7B is a cross-sectional view and a front view of a display device implemented by another borderless design.
7C is a cross-sectional view and a front view of the display device 100 implemented with the borderless design according to the present embodiments.
8 is a view schematically showing another appearance of the display device according to the present embodiments.
9 is a cross-sectional view of the display device having the appearance of Fig.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to denote like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

The display device according to the present embodiments may be a liquid crystal display device, an organic light-emitting display device, a plasma display device, or the like. The following embodiments will be described focusing on a liquid crystal display device for convenience of explanation, but are not limited thereto.

1 is a view schematically showing an appearance of a display device 100 according to the present embodiments.

Referring to FIG. 1, the display device 100 according to the present embodiment has no appearance of a case or the like when viewed from the front, so that it has no or almost no border of the screen.

In the following, the design of the appearance without or almost without the border of the screen is called "boardless design".

1, the display device 100 according to the present embodiment includes a display module 110, an external cover 120 covering the side and back surface of the display module 110, and the like.

Referring to FIG. 1, the enlarged view of the portion A shows no covering of the front surface of the display module 110 when viewed from the front.

Various embodiments of a borderless design display device 100 having excellent protection performance against a circuit-related structure such as a pad portion and having an excellent light shielding performance and simplifying the manufacturing process are shown in FIG. 1 Will be described with reference to Figs. 2 to 7C which are cross-sectional views of part A of Fig.

2 is a sectional view of the display device 100 according to the present embodiments.

2, the display module 110 basically includes a display panel 210, and may further include various components depending on the type of the display device 100. FIG.

For example, when the display device 100 is a liquid crystal display device, the display module 110 includes a backlight unit (not shown), a drive circuit unit, a display panel 210, and a backlight unit And may include case members.

The display panel 210 includes a first substrate 211 and a second substrate 212 bonded together by a sealant 250.

When the display device 100 is a liquid crystal display device, a liquid crystal layer may exist between the first substrate 211 and the second substrate 212.

The display portion of the display panel 210 may include an active area A / A in which an image is displayed and a bezel area B / A in the periphery thereof.

In the display panel 210, the first substrate 211 may be a color filter substrate corresponding to a viewing screen portion, and the second substrate 212 may be a thin film transistor substrate.

In this case, data lines and gate lines and patterns 2121 such as a thin film transistor (TFT) may be disposed on the second substrate 212 of the display panel 210.

One side of the second substrate 212 is larger than the first substrate 211. In other words, a pad portion 2122, which can be electrically connected to a driving circuit unit or the like, may be located on a portion of the second substrate 212 larger than the first substrate 211.

A color filter, a black matrix 2110, and the like may be disposed on the first substrate 211 of the display panel 210.

Here, the black matrix 2110 located on the first substrate 211 is not formed up to the pad portion open region POA.

The driving circuit unit included in the display module 110 may include a data driving circuit (source driving circuit), a gate driving circuit (scan driving circuit), a timing controller, a printed circuit board, and the like.

The data driver circuit may include at least one source driver integrated circuit that supplies a data voltage to the data lines located on the display panel 210. [

Each source driver integrated circuit may be connected to a bonding pad of the display panel 110 by a Tape Automated Bonding (TAB) method or a chip on glass (COG) And may be integrated and disposed on the display panel 210 as occasion demands.

In addition, each source driver integrated circuit may be implemented by a chip on film (COF) method. In this case, each source driver integrated circuit may be mounted on at least one source printed circuit board and the other end may be mounted on a flexible film bonded to the display panel 210.

Each source driver integrated circuit may include a shift register, a latch circuit, a digital analog converter (DAC), an output buffer, and the like.

The gate drive circuit may include at least one gate driver integrated circuit that sequentially supplies gate voltages to the gate lines located in the display panel 210. [

Each gate driver integrated circuit may be connected to a bonding pad of the display panel 110 by a Tape Automated Bonding (TAB) method or a chip on glass (COG) method, or may be connected to a GIP (Gate In Panel) Type, and may be directly disposed on the display panel 110, and may be integrated and disposed on the display panel 210, as the case may be.

Each gate driver integrated circuit can be implemented by a chip on film (COF) method. In this case, each gate driver integrated circuit may be mounted on a flexible film connected to the display panel 210.

Each gate driver integrated circuit may include a shift register, a level shifter, and the like.

The timing controller supplies various control signals to the data driving circuit and the gate driving circuit to control the data driving circuit and the gate driving circuit.

The timing controller starts scanning in accordance with the timing implemented in each frame, switches input image data inputted from the outside according to the data signal format used in the data driving circuit, outputs the switched image data, Controls the data drive at a reasonable time.

Such a timing controller is connected to a control printed circuit board connected to a source printed circuit board through a connection medium such as a flexible flat cable (FFC) or a flexible printed circuit (FPC) .

The control printed circuit board may further include a power controller for controlling various voltages or currents to supply or supply various voltages or currents to the display panel 210, the drive circuit unit or the like.

The source printed circuit board and the control printed circuit board mentioned above may be a single printed circuit board.

Meanwhile, when the display device 100 is a liquid crystal display device, the backlight unit included in the display module 110 may include a light source and a light guide plate to supply light to the display panel 210, Edge type or the like.

2, the outer cover 120 may include a middle cabinet 220 or the like positioned on a side surface of the display panel 210, and may further include a bottom cover or the like as the case may be. can do.

2, the display device 100 according to the present embodiment includes a first substrate 211 and a second substrate 212 on which the pad portion 2122 on the second substrate 212 is opened The first polarizer 230 may include a first polarizer 230 and a second polarizer 240. The first polarizer 230 may include a first polarizer 230 and a second polarizer 240. [

That is, the first polarizer 230 may extend beyond the end Pe of the first substrate 211 to prevent the pad portion 2122 of the second substrate 212 from being exposed.

The first polarizing plate 230 is positioned above the first substrate 211 and extends beyond the end Pe of the first substrate 211 to form the pad portion 2122 on the second substrate 212 The pad portion 2122 on the second substrate 212 can be prevented from being exposed to the outside while the borderless design can be realized.

The prevention of the exposure of the pad portion 2122 on the second substrate 212 is performed by electrically connecting the drive circuit unit electrically connected to the pad portion 2122 and the pad portion 2122 on the second substrate 212, Thereby protecting the patterns 2121 on the second substrate 212 to be connected.

2, the first polarizing plate 230 covers the area POA where the pads 2122 on the second substrate 212 are open, while the first polarizing plate 230 covers the open area POA of the middle cabinet 220 To the upper portion of the frame.

That is, the first polarizing plate 230 is located on the upper side of the first substrate 211 and extends to the upper portion of the middle cabinet 222 through a point opposite to the pad portion 2122 on the second substrate 212, can do.

In this case, the back surface of the first polarizer 230 is divided into a region CFA located above (or contacting) the first substrate 211, and a portion covering the pad portion cover region PCA and the middle cabinet contact region MCA. And the like.

According to the above-described expansion structure of the first polarizing plate 230, when the display device 100 is viewed from the front, the rim of the screen is not seen at all. That is, when the display device 100 is viewed from the front, the front surface of the display panel 210 is not covered with the outer cover 110 such as the middle cabinet 220. Therefore, a borderless design implementation of the display apparatus 100 can be made possible.

The first polarizer 230 is positioned on the first substrate 211 and the middle portion of the middle cabinet 220 covers the open area POA of the pad portion 2122 on the second substrate 212, The upper end of the middle cabinet 220 may correspond to the upper end of the first substrate 211, as shown in FIG.

In this case, the back surface of the first polarizing plate 230 is in contact with the top of the first substrate 211 and can also contact with the top of the middle cabinet 220.

As described above, since the extended first polarizer plate 230 is bonded to the upper portion of the middle cabinet 220 and bonded thereto, it is possible to prevent interference with the borderless design or increase the width of the bezel area B / Cover configuration (eg, top case, etc.) is not required.

Thus, a slim and compact outer cover structure can be made. This can greatly help the implementation of a slim, borderless design of the display device 100.

As described above, the display device 100 according to the present embodiment has an additional outer cover structure (for example, a top case) that interferes with the borderless design or increases the width of the bezel area B / A, Etc.). Accordingly, the middle cabinet 220 may be a frame exposed directly to the outside.

Thus, the width of the in-screen bezel area B / A can be minimized. That is, when the borderless design is implemented, the width of the bezel in the screen may be narrowed even if the size of the entire screen area is the same. In this case, the screen is more tightly packed so that the real feeling of the image is increased.

Referring to FIG. 2, the display device 100 may further include a second polarizer 240 positioned on the back surface of the second substrate 212.

When the display device 100 according to the present embodiment is a liquid crystal display, the second polarizer 240 positioned on the backside of the second substrate 212 polarizes the light emitted from the backlight unit. The light polarized by the second polarizer 240 meets the liquid crystal, and the direction of the light is adjusted by the voltage applied to the liquid crystal. The adjusted light may be polarized by the first polarizer 230 located on the first substrate 211 to emit light or not.

That is, the borderless design according to the present embodiments may be implemented in a liquid crystal display device in which the first and second polarizing plates 230 and 240 are disposed on both sides of the display panel 210.

In the case where the display device 100 according to the present embodiment is an organic light emitting display, the second polarizer 240 located on the rear surface of the second substrate 212 may not be present.

In the following, other embodiments of the display device 100 will be described with a focus on the difference from the above.

3 is another cross-sectional view of the display device 100 according to the present embodiments.

Referring to FIG. 3, in the display device 100 according to the present exemplary embodiment, the light shielding member 300 may be positioned in the pad cover region PCA on the back surface of the first polarizer 230. FIG.

That is, the light shielding member 300 is attached to the back surface of the first polarizing plate 230, and can face the pad portion 2122 on the second substrate 212.

As described above, since the light shielding member 300 is located in the pad cover region PCA on the back surface of the first polarizer 230, light can be prevented from leaking out to an undesired region.

The light shielding member 300 may be adhered to the back surface PCA of the first polarizing plate 230.

The light shielding member 300 may be, for example, a black tape having adhesive property on one side bonded to the back side PCA of the first polarizing plate 230.

The light shielding member 300 may be positioned between the side of the first substrate 211 and the side of the middle cabinet 220.

The light shielding performance can be improved due to the structure of the light shielding member 300 described above.

4 is another cross-sectional view of the display device 100 according to the present embodiments.

3, the light shielding member 300 is further extended to the outer periphery as compared with the case of FIG. 3, so that not only the pad cover (PCA) area but also the middle cabinet contact area MCA ). ≪ / RTI >

That is, one surface of the light shielding member 300 is attached to the back surface of the first polarizing plate 230, and the other surface of the light shielding member 300 is attached to the upper portion of the middle cabinet 220.

When the shielding member 300 is further extended as shown in FIG. 4, the shielding performance by the shielding member 300 can be further increased.

The light shielding member 300 described above may be formed in a manner such that both surfaces of the first polarizing plate 230 contacting the back surface PCA and MCA of the first polarizing plate 230 and the other surface contacting the upper surface of the middle cabinet 220 are both bonded It can be black tapes with good quality.

As described above, by using the double-sided black tape as the light shielding member 300, it is possible to easily combine the first polarizer 230 and the middle cabinet 220 while providing a shielding function.

5 and 6 are cross-sectional views showing the driver integrated circuit 500 of the display device 100 according to the present embodiments.

As shown in FIG. 5, the driver integrated circuit 500 may be connected to the pad portion 2122 on the second substrate 212.

Alternatively, as shown in FIG. 6, the flexible film 600 mounted with the driver IC 500 may be connected to the pad portion 2122 on the second substrate 212.

The driver integrated circuit 500 shown in Figs. 5 and 6 may be a source driver integrated circuit for driving data, or a gate driver integrated circuit for gate driving.

FIG. 7A is a cross-sectional view and a front view of a display device implemented in a non-boardless design, FIG. 7B is a cross-sectional view of a display device implemented by another borderless design, and FIG. And FIG. 7C is a cross-sectional view and a front view of the display device 100 implemented by the borderless design according to the present embodiments.

7A, if the extension structure of the first polarizer 230 according to the present embodiment, the structure of the middle cabinet 220, or the like is not used, in order to prevent exposure of the pad portion 2122, The case 700 must be provided outside the middle cabinet 220.

Accordingly, the top width Wt of the top case 700 is seen as the rim of the screen when viewed from the front side.

In the display device 100 according to the present embodiments, the first substrate 211 may be a color filter substrate and the second substrate 212 may be a thin film transistor substrate. Here, the first substrate 211 may correspond to a viewing screen.

As shown in FIG. 7B, the borderless design can be realized by using the second substrate 212 corresponding to the thin film transistor substrate as a viewing screen.

However, in such a borderless design, it is easy to prevent the pad portion 2122 from being exposed in the front surface direction of the screen, but a black matrix BM must be formed on the back surface of the TFT substrate 212 Therefore, there is a disadvantage in that an additional process is required in manufacturing the panel.

In the borderless design shown in FIG. 7B, the upper width Wm of the middle cabinet 220 is slightly visible at the edge of the screen.

In the case of the borderless design according to the embodiments illustrated in FIG. 7C, compared with the non-boardless design of FIG. 7A, the enlarged structure of the first polarizer 230, The borderless design having no border of the front screen can be realized according to the structure and the additional configuration of the shielding member 300. [

In the case of the borderless design according to the embodiments illustrated in FIG. 7C, since it is unnecessary to form the black matrix BM on the back surface of the thin film transistor substrate 212 as compared with the borderless design of FIG. 7B, There is an advantage that no additional process is required.

In the case of the borderless design according to the embodiments illustrated in FIG. 7C, it is possible to realize a completely borderless design having no border of the screen as compared with the borderless design of FIG. 7B.

In the above, the display device 100 according to the present embodiments is implemented with a borderless design having no or almost no border of the screen.

In the following description, the basic structure of the expansion structure of the first polarizing plate 230, the structure of the middle cabinet 220, the additional structure of the light shielding member 300, and the like are described below. The implemented display device 100 will now be described.

8 is a view schematically showing another appearance of the display device 100 according to the present embodiments. Fig. 9 is a sectional view of the display device 100 having the appearance of Fig.

Referring to FIG. 8, a part of the outer cover 110 (for example, the middle cabinet 220) of the display device 100 according to the present embodiments can be seen at the edge of the screen.

8 and 9, the frame width We may correspond to the upper width Wm of the middle cabinet 220. [

In the case of the borderless design having the appearance of FIG. 8, the first polarizing plate 230 is located on the upper side of the first substrate 211, and also on the side of the middle cabinet 220, as shown in FIG. In this case, the upper portion of the middle cabinet 220 is seen from the front side.

As described above, the first polarizing plate 230 is located on the upper portion of the first substrate 211, and the pad portion 2122 on the second substrate 212 is extended and covered to the exposed region POA, The side of the first polarizer 230 can be protected while the cabinet 220 is positioned on the side surface of the first polarizer 230 to prevent the pad portion 2122 from being exposed.

According to the embodiments as described above, it is possible to provide the display device 100 that effectively realizes the borderless design having no or no border of the screen.

According to the embodiments, the display device 100 having a slim structure can be provided while implementing the borderless design.

According to the embodiments, the display device 100 can be provided which is simple in the panel manufacturing process while implementing the borderless design.

According to these embodiments, it is possible to provide a display device 100 having a light-shielding structure suitable for implementing a borderless design.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. , Separation, substitution, and alteration of the invention will be apparent to those skilled in the art. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: display device
110: Display module
120: outer cover
210: Display panel
211: first substrate
212: second substrate
2122:
220: Middle cabinet
230: first polarizing plate
240: second polarizer plate
300: Shading member
500: Driver IC
600: flexible film

Claims (11)

A display panel to which the first substrate and the second substrate are adhered;
A middle cabinet positioned on a side surface of the display panel; And
And a first polarizer disposed on the first substrate and extending longer than an end of the first substrate. The method according to claim 1,
Wherein the first polarizer is positioned on an upper portion of the first substrate and extends to a top portion of the middle cabinet through a point opposite to the pad portion on the second substrate. The method according to claim 1,
And an upper end of the middle cabinet corresponds to an upper end of the first substrate. The method according to claim 1,
And a light shielding member attached to the back surface of the first polarizer plate and facing the pad portion on the second substrate. 5. The method of claim 4,
Wherein the light shielding member is attached to a back surface of the first polarizer, and is positioned between a side surface of the first substrate and a side surface of the middle cabinet. 5. The method of claim 4,
Wherein one surface of the light shielding member is attached to the back surface of the first polarizing plate and the other surface of the light shielding member is attached to the upper portion of the middle cabinet. 5. The method of claim 4,
Wherein the light shielding member is a black tape having adhesive property on one side or both sides. The method according to claim 1,
And a second polarizer disposed on a rear surface of the second substrate. The method according to claim 1,
Wherein the first substrate is a color filter substrate corresponding to a viewing screen portion, and the second substrate is a thin film transistor substrate. The method according to claim 1,
Wherein the middle cabinet is a frame exposed to the outside. The method according to claim 1,
Wherein the first polarizing plate is positioned on an upper side of the first substrate and is located on a side of the middle cabinet.

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