KR102504236B1 - Display apparatus and multi screen display apparatus comprising the same - Google Patents

Abstract

The present invention provides a display device capable of concealing a bezel and a tea screen display device including the same. The display device according to the present invention includes a display panel having a display area where an image is displayed and a non-display area surrounding the display area. and a bezel hiding module displaying an image in a bezel area covering the non-display area.

Description

Display device and multi-screen display device including the same {DISPLAY APPARATUS AND MULTI SCREEN DISPLAY APPARATUS COMPRISING THE SAME}

The present invention relates to a display device and a multi-screen display device including the same.

As we enter the information age, display devices that display a large amount of information have developed rapidly. Recently, flat panel display devices such as liquid crystal display devices or organic light emitting display devices having excellent performance in thinning, lightening, and low power consumption have been widely used. is spreading

Conventional display devices include a display panel, a housing accommodating the display panel, and a front case covering a non-display area of the display panel. Such a conventional display device has a problem in that a bezel width increases due to the front case covering the front edge of the display panel as the front case is exposed to the outside.

Recently, a multi-screen display device that implements a large display screen by arranging a plurality of screen devices composed of conventional display devices in a lattice form has been commercialized.

However, in a conventional multi-screen display device, a boundary portion called a seam exists between display devices connected to each other due to a front case of a plurality of display devices. When one image is displayed on the entire screen, such a boundary portion gives a sense of disconnection to the entire screen, thereby reducing the immersion of the image.

A technical problem of the present invention is to provide a display device capable of concealing a bezel and a tea screen display device including the display device.

A technical problem of the present invention is to provide a multi-screen display device capable of concealing a boundary between a plurality of display devices.

A display device according to the present invention includes a display panel having a display area where an image is displayed and a non-display area surrounding the display area, and a bezel hiding module displaying an image in a bezel area covering the non-display area.

A display device according to the present invention includes a plurality of screen modules and a plurality of module connecting members connecting sides of the plurality of screen modules, and each of the plurality of screen modules includes a display area in which images are displayed and a non-display area surrounding the display area. The display device includes a display panel having an area and a bezel hiding module displaying an image in a bezel area covering the non-display area.

According to the present invention, when the display panel is driven, the bezel area of the display device is concealed and the dark portion generated in the bezel area is removed, thereby making the bezel of the display device zero.

According to the present invention, by displaying a bezel image in the bezel area of each display device, a boundary between a plurality of display devices can be concealed, and one image can be displayed on the entire screen without disconnection.

In addition to the effects of the present invention mentioned above, other features and advantages of the present invention will be described below, or will be clearly understood by those skilled in the art from such description and description.

1 is a perspective view illustrating a display device according to an example of the present invention.
FIG. 2 is a cross-sectional view along the line II′ shown in FIG. 1 .
FIG. 3 is a diagram for explaining the bezel hiding module shown in FIG. 1 .
FIG. 4 is a cross-sectional view along the line II-II′ shown in FIG. 3 .
FIG. 5 is another cross-sectional view along the line II-II′ shown in FIG. 3 .
6A and 6B are cross-sectional views of an edge display module according to another example of the present invention.
7A to 7C are diagrams for explaining an additional configuration of an edge display module according to the present invention.
8A is a diagram for explaining another additional configuration of the border display module according to the present invention.
FIG. 8B is a cross-sectional view along the line III-III' shown in FIG. 8A.
9 is a diagram for explaining a data processing circuit of a control board according to an embodiment of the present invention.
10A and 10B are diagrams illustrating images displayed on a conventional display device and a display device according to the present invention, respectively.
11 is a diagram for explaining a multi-screen display device according to the present invention.
FIG. 12 is a cross-sectional view along the line IV-IV' shown in FIG. 11;
13A and 13B are diagrams illustrating images displayed on a conventional multi-screen display device and a multi-screen display device according to the present invention, respectively.

The meaning of terms described in this specification should be understood as follows.

Singular expressions should be understood to include plural expressions unless the context clearly defines otherwise, and terms such as “first” and “second” are used to distinguish one component from another, The scope of rights should not be limited by these terms. It should be understood that terms such as "comprise" or "having" do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof. The term “at least one” should be understood to include all possible combinations from one or more related items. For example, "at least one of the first item, the second item, and the third item" means not only the first item, the second item, or the third item, respectively, but also two of the first item, the second item, and the third item. It means a combination of all items that can be presented from one or more. The term "on" means not only the case where a certain component is formed directly on top of another component, but also the case where a third component is interposed between these components.

Hereinafter, a preferred example of a display device according to the present invention and a multi-screen display device including the same will be described in detail with reference to the accompanying drawings. In adding reference numerals to components of each drawing, the same components may have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

FIG. 1 is a perspective view illustrating a display device according to an example of the present invention, and FIG. 2 is a cross-sectional view taken along the line II' shown in FIG. 1 .

Referring to FIGS. 1 and 2 , a display device 10 according to an example of the present invention includes a display panel 100 and a bezel hiding module 200 .

The display panel 100 includes a display area AA where an image is displayed and a non-display area IA surrounding the display area AA. Here, the non-display area IA includes first and second non-display areas parallel to the first longitudinal direction X of the display panel 100 and horizontally crossing the first longitudinal direction X of the display panel 100. It may include third and fourth non-display areas parallel to the second longitudinal direction (Y). For example, the first non-display area is the lower edge area of the display panel 100, the second non-display area is the upper edge area of the display panel 100, and the third non-display area is the left edge of the display panel 100. The area and the fourth non-display area may each be defined as a right edge area of the display panel 100 .

The display panel 100 according to an example includes a lower substrate 101 , an upper substrate 103 , a lower polarization member 105 , and an upper polarization member 107 .

The lower substrate 101 includes a plurality of pixels provided for each pixel area defined by a panel signal line including a plurality of gate lines and a plurality of data lines. Each pixel may include a thin film transistor connected to the gate line and the data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode to which a common voltage is supplied.

The lower substrate 101 includes a pad portion provided in the first or second non-display area. The pad unit includes a plurality of pads connected one-to-one with a plurality of data lines provided in the display area AA.

The lower substrate 101 is provided in the third and/or fourth non-display area to be connected to the plurality of gate lines provided in the display area AA, and the plurality of gate lines are sequentially driven or interlaced. and a built-in gate driving circuit that operates in the same way. The built-in gate driving circuit may be a shift register supplying gate pulses to gate lines, and such a shift register is formed along with a thin film transistor manufacturing process of each pixel to be connected to each gate line. The built-in gate driving circuit supplies a gate pulse of a gate-on voltage during the scan period of each gate line and supplies a gate-off voltage during the remaining sustain period.

The upper substrate 103 includes a pixel definition pattern defining an opening area overlapping each pixel area provided on the lower substrate 101 and a color filter formed in the opening area. The upper substrate 103 covers the entire lower substrate 101 except for the pad portion of the lower substrate 101 by bonding to the lower substrate 101 with the liquid crystal layer interposed therebetween by a sealant.

The lower polarization member 105 is attached to the rear surface of the lower substrate 101 and polarizes light incident from the backlight unit along a first polarization axis to irradiate the lower substrate 101 .

The upper polarizing member 107 is attached to the front surface of the upper substrate 103 and polarizes light transmitted through the upper substrate 103 and emitted to the outside. The upper polarizing member 107 according to an example is a polarizing film that is attached to the front surface of the upper substrate 103 and polarizes color light transmitted through the upper substrate 103 and emitted to the outside to a second polarization axis different from the first polarization axis. It can be done. The upper polarizing member 107 according to another example separates the polarizing film and the 3D image displayed on the display panel 100 by being attached to the upper surface of the polarizing film, that is, the left eye image and the right eye image into different polarization states. It may include a retarder film having a left eye retarder pattern and a right eye retarder pattern.

The bezel concealing module 200 is arranged to cover the non-display area IA of the display panel 100 and displays an image in the bezel area BA covering the non-display area IA, thereby reducing the bezel area BA. cover up Here, if the image displayed on the bezel area BA is defined as a bezel image, the bezel image and the panel image displayed on the display area AA of the display panel 100 are one image, which covers the entire front surface of the display device. displayed on

The bezel concealing module 200 includes a plurality of bezel pixels that display a bezel image by a driving method different from that of the pixels provided in the display panel 100 (hereinafter, defined as “panel pixels”). As an example, the panel pixels may be non-emission pixels, and the bezel pixels may be self-emission pixels. As another example, a panel pixel may display an image according to a voltage driving method, and a bezel pixel may display an image according to a current driving method. As another example, panel pixels may display images according to an active matrix display method, and bezel pixels may display images according to a passive matrix display method.

The bezel hiding module 200 according to an example may include a point light source array. The point light source array may include a plurality of point light sources driven according to a passive matrix display method. For example, each of the plurality of point light sources may be a light emitting diode made of a micro light emitting diode chip or a chip-scale package.

As such, the bezel concealing module 200 displays a bezel image on the bezel area BA of the display device, thereby removing the dark portion generated in the bezel area BA when the display panel 100 is driven, thereby reducing the bezel of the display device. ) to zero. In addition, the bezel hiding module 200 increases the resolution of the display device by displaying images around the panel image displayed in the display area AA as a bezel image according to the resolution of the display panel 100 among the input images.

The display device 10 according to an example of the present invention further includes a panel support frame 120 , a rear cover 140 , and a backlight unit 160 .

The panel support frame 120 supports the display panel 100 . The panel support frame 120 according to an example includes a frame body 121, a panel support sidewall 123 provided vertically on an upper surface of the frame body 121 and coupled to a rear edge portion of the display panel 100, the frame body Includes a groove portion 125 provided on the outer surface of 121, an inclined portion 127 provided on the inner surface of the frame body 121, and a cover insertion groove 129 recessed from the lower surface of the frame body 121. do.

The frame body 121 may be made of a metal material or a plastic material, but is preferably made of a metal material such as aluminum to maintain the rigidity of the display device.

The panel support sidewall 123 may be coupled to a rear edge portion of the display panel 100 by a panel adhesive 110 .

The groove part 125 is provided concave to have a certain depth from the outer surface of the frame body 121 overlapping the pad part of the display panel 100 . The hum part 125 is connected to the pad part and accommodates the first driving circuit 300 that drives the display panel 100 .

The inclined portion 127 is provided to be inclined from an inner upper surface to an inner lower surface of the frame body 121 adjacent to the lower surface of the display panel 100 to advance light incident from the backlight unit 160 toward the display panel 100 .

The cover insertion groove 129 is provided concavely to have a certain length from the lower surface of the frame body 121 . The sidewall of the rear cover 140 is inserted into the cover insertion groove 129 .

Additionally, the panel support frame 120 may include first to fourth frame members coupled to each other to have a square band shape.

The first frame member is disposed parallel to the first horizontal axis direction (X). The second frame member is disposed parallel to the first frame member. The third frame member is disposed parallel to the second horizontal axis direction (Y) crossing the first horizontal axis direction (X) and horizontally on the same plane, and is connected to one end of the first frame member by an oblique coupling method. 2 are coupled to one end of each frame member. The fourth frame member is disposed parallel to the third frame member and coupled to the other end of the first frame member and the other end of the second frame member by an oblique coupling method, respectively.

Each of the first to fourth frame members includes the frame body 121, the panel support sidewall 123, the groove part 125, the inclined part 127, and the cover insertion groove 129.

Additionally, the display device 10 according to an example of the present invention further includes a plurality of display connecting protrusions 170 installed on the frame body 121 of the panel support frame 120 (or the first to fourth frame members). do.

Each of the plurality of display connecting protrusions 170 is installed on the frame body 121 at regular intervals. For example, each of the plurality of display connection protrusions 170 may be coupled to the frame body 121 by coupling a screw thread provided at one end and a screw hole provided in the frame body 121 . The display connection protrusion 170 includes a pin hole 171 having a certain depth.

The rear cover 140 supports a part of the backlight unit while covering the rear surface of the panel support frame 120 . The rear cover 140 according to an example includes a cover plate 141 and a cover sidewall 143 .

The cover plate 141 may have a flat plate shape covering the rear surface of the panel support frame 120 .

The cover sidewall 143 is vertically connected to the edge end of the cover plate 141 and inserted into the cover insertion groove 129 of the panel support frame 120 .

The backlight unit 160 is disposed on the rear cover 140 and the panel support frame 120 to radiate light to the display panel 100 . The backlight unit 160 according to an example includes a reflective sheet 161 , a plurality of light source array modules 162 , a diffusion plate 163 , and an optical sheet unit 164 .

The reflective sheet 161 is disposed to cover the cover plate 141 of the rear cover 140 and the inclined portion 127 of the panel support frame 120 . At this time, the edge portion of the reflective sheet 161 is supported on the upper surface of the frame body 121 of the panel support frame 120 . The reflective sheet 161 minimizes light loss by reflecting light traveling toward the rear cover 140 and the panel support frame 120 toward the diffusion plate 163 .

The plurality of light source array modules 162 are arranged at regular intervals on the cover plate 141 of the rear cover 140 to radiate light to the diffusion sheet 163 . Each of the plurality of light source array modules 162 according to an example includes a printed circuit board 162a for a light source supported by the cover plate 141, and a plurality of light emitting lights mounted on the printed circuit board 162a for a light source at regular intervals. A diode package 162b and a plurality of optical lenses 162c coupled to the printed circuit board 162a for a light source may be included to cover each of the plurality of light emitting diode packages 162b.

The diffusion plate 163 is disposed on the panel support frame 120 to cover the plurality of light source array modules 162 . The diffusion plate 163 diffuses light incident from the plurality of light source array modules 162 to the entire lower surface of the display panel 100 .

The optical sheet unit 164 is disposed on the diffusion plate 163 to improve luminance characteristics of light incident from the diffusion plate 163 . For example, the optical sheet unit 164 may include, but is not limited to, a diffusion sheet, a prism sheet, and a dual brightness enhancement film. It may be made of a laminated combination of two or more selected from a film (dual brightness en-hancement film) and a lenticular sheet.

The display device 10 according to an example of the present invention may further include a first driving circuit 300 , a second driving circuit 400 , and a control board 500 .

The first driving circuit 300 is connected to a pad part provided on the lower substrate 101 of the display panel 100 . The first driving circuit 300 displays an image corresponding to the panel image data supplied from the control board 500 on the display area AA of the display panel 100 . The first driving circuit 300 according to an example includes a plurality of flexible circuit films 310 , a data driving integrated circuit 330 , and a first printed circuit board 350 .

Each of the plurality of flexible circuit films 310 is attached between the pad part of the lower substrate 101 and the first printed circuit board 350 by a film attaching process.

The data driving integrated circuit 330 is mounted on each of the plurality of flexible circuit films 310 . The data driving integrated circuit 330 receives panel pixel data and a data control signal supplied from the control board 500, converts the panel pixel data into an analog data voltage for each panel pixel according to the data control signal, and converts the data voltage for each panel pixel to the lower substrate. It is supplied to the data line of (101).

The first printed circuit board 350 is connected to a plurality of flexible circuit films 310 . The first printed circuit board 350 serves to provide signals necessary for displaying an image on the panel pixels to the data driving integrated circuit 330 and the built-in gate driving circuit.

The second driving circuit 400 is connected to the bezel hiding module 200 and displays an image corresponding to the bezel pixel data supplied from the control board 500 on the bezel hiding module 200 . The second driving circuit 400 according to an example includes a second printed circuit board 410 and an LED driver 420 .

The second printed circuit board 410 is connected to the control board 500 through the first signal cable 401, and the point light source array 250 provided in the bezel concealment module 200 through the second signal cable 402 ) is connected to The second printed circuit board 410 receives bezel pixel data supplied from the control board 500 and provides the received bezel pixel data to the LED driver 420, and outputs the data voltage for each bezel pixel output from the LED driver 420 to the bezel concealing module. (200).

The LED driver 420 is mounted on the second printed circuit board 410, generates data voltages for each bezel pixel based on bezel pixel data supplied from the control board 500, and provides the data voltage to the bezel hiding module 200. . That is, the LED driver 420 generates data voltages for each bezel pixel according to bezel pixel data to drive the point light source array 250 provided in the bezel hiding module 200 to display a bezel image in the bezel area BA.

The control board 500 includes a data processing circuit 510 that generates panel image data and bezel image data based on an input image signal and a timing synchronization signal supplied from an external host driving system or integrated control board. Here, the control board 500 may be connected to the first driving circuit 300 through a third signal cable and connected to the second driving circuit 400 through a fourth signal cable.

The data processing circuit 510 receives an input image signal and a timing synchronization signal supplied from an external host driving system or integrated control board, generates panel image data and bezel image data based on the input image signal, and generates panel image data. Data is provided to the first driving circuit 300 and at the same time bezel image data is provided to the second driving circuit 400 .

As described above, the display device 10 according to an example of the present invention displays a bezel image on the bezel hiding module 200 covering the non-display area IA of the display panel 100, so that when the display panel 100 is driven, As the bezel area BA is concealed, the dark portion generated in the bezel area BA is removed, and as a result, a zero bezel can be implemented.

FIG. 3 is a view for explaining the bezel concealing module shown in FIG. 1, and FIG. 4 is a cross-sectional view along line II-II' shown in FIG.

1 to 4, the bezel hiding module 200 according to an example of the present invention includes first to fourth edge display modules 200a, 200b, 200c, and 200d having a point light source array 230 do. Here, each of the first to fourth edge display modules 200a, 200b, 200c, and 200d includes a metal material that dissipates heat generated when the point light source array 250 is driven.

Each of the first to fourth frame display modules 200a, 200b, 200c, and 200d surrounds the non-display area IA and side surfaces of the display panel 100 to display an image in the bezel area BA of the display panel 100. By displaying, the resolution of the image displayed on the display device is increased.

The first edge display module 200a is disposed to cover the first non-display area of the display panel 100 . The second border display module 200b is disposed to cover the second non-display area of the display panel 100 . The third edge display module 200c is disposed to cover the third non-display area of the display panel 100 . The fourth edge display module 200d is disposed to cover the fourth non-display area of the display panel 100 .

Each of the first to fourth edge display modules 200a, 200b, 200c, and 200d according to an embodiment includes a side wall portion 210 covering a side surface of the display panel 100 and a non-display area IA of the display panel 100. It may include a front part 230 bent from the upper part of the side wall part 210 to cover, a point light source array 250 disposed on the front part 230, and a connector 270 provided on the side wall part 210. there is.

The side wall portion 210 covers not only the side of the display panel 100 but also the side of the panel support frame 120 . As a result, the side wall portion 210 covers the side of the display device. Additionally, the side wall portion 210 includes a plurality of pin insertion holes 200h facing each of the plurality of display connection protrusions 170 installed on the panel support frame 120 . Each of the plurality of pin insertion holes 200h exposes each of the plurality of display connection protrusions 170 to the outside.

The front part 230 is disposed to overlap the front edge of the display panel 100 and covers the non-display area IA of the display panel 100 . As a result, the front part 230 covers the front edge of the display device and may become a bezel of the display device.

In each of the first and second frame display modules 200a and 200b, the side wall portion 210 and the front portion 230 have the same length with respect to the first longitudinal direction X of the display panel 100, while " It has a ┏" or "┓" shaped cross section. The bending portion between the side wall portion 210 and the front portion 230 may have a curved surface shape having a predetermined curvature.

The side wall portion 210 of each of the third and fourth frame display modules 200c and 200d has first and second wing portions 210a and 210b.

The first wing portion 210a has a length corresponding to the width of the front portion 230 of the first and second frame display modules 200a and 200b parallel to the second longitudinal direction Y of the display panel 100. It extends from one side of the side wall portion 210 to have. Each of the outer and upper surfaces of the first wing portion 210a is covered by the front portion 230 of the first frame display module 200a.

The second wing portion 210b extends from the other side of the side wall portion 210 to have the same length as the first wing portion 210a. Each of the outer and upper surfaces of the second wing portion 210b is covered by the front portion 230 of the second frame display module 200b.

The front part 230 of each of the third and fourth frame display modules 200c and 200d is inserted between the front part 230 of each of the first and second frame display modules 200a and 200b.

The front portions 230 of each of the first to fourth frame display modules 200a, 200b, 200c, and 200d are disposed on the same plane to have a square band shape, excluding the display area AA of the display panel 100. It covers the rest of the front edge of the display panel 100, that is, the non-display area IA.

The point light source array 250 is disposed on the front part 230 of each of the first to fourth edge display modules 200a, 200b, 200c, and 200d, and emits light according to the supplied data voltage for each bezel pixel to display a bezel image. display The point light source array 250 according to an example includes a plurality of point light sources 251 arranged on the front surface of the front part 230 to be driven according to a passive matrix display method. At this time, the plurality of point light sources 251 are arranged on the front portion 230 along the first and second longitudinal directions (X, Y) of the display panel 100, and the display area AA of the display panel 100 Arranged to have the same spacing as the panel pixels provided in the. That is, the plurality of point light sources 251 is used to prevent a sense of disconnection between the bezel image displayed by the point light source array 250 and the panel image displayed in the display area AA of the display panel 100. For this purpose, they are arranged on the same line with the panel pixels in the column and row directions, respectively.

Each of the plurality of point light sources 251 is grouped into a plurality of unit bezel pixels. Each of the plurality of unit bezel pixels may include a red point light source, a green point light source, and a blue point light source. Here, one point light source has a size equal to or smaller than one panel pixel provided in the display area AA of the display panel 100, so that a bezel image having the same resolution as that of the display panel 100 can be displayed. there is. For example, each of the plurality of point light sources 251 may be a light emitting diode made of a micro light emitting diode chip or a chip-scale package. Each of the plurality of point light sources 251 may be mounted on the front part 230 through a bonding process using surface mount technology.

The connector 270 is installed on the sidewall portion 210 of each of the first to fourth edge display modules 200a, 200b, 200c, and 200d to receive the data voltage for each bezel pixel supplied from the first driving circuit 400. and output to each of the plurality of point light sources 251.

Each of the first to fourth edge display modules 200a, 200b, 200c, and 200d may be a metal printed circuit board made of a flexible metal material and having a multi-layer wiring layer. Specifically, each of the first to fourth frame display modules 200a, 200b, 200c, and 200d includes a base member 221 made of metal, an insulating layer 223 covering the front surface of the base member 220, and insulating A driving wiring layer 225 provided on the front surface of the layer 223, a front protective layer 227 covering the driving wiring layer 225, and a rear protective layer 229 provided on the rear surface of the base member 221 can include

The base member 221 may be a plate made of a metal material such as aluminum having high thermal conductivity in order to dissipate heat generated when the point light source array 250 is driven.

The insulating layer 223 is coated on the entire surface of the base member 221 to electrically insulate the base member 221 from the driving wiring layer 225 .

The driving wiring layer 225 is for supplying a common voltage and a data voltage for each bezel pixel to each of the plurality of point light sources 251 and includes a multi-layered wiring layer. For example, the driving wiring layer 225 covers the first wiring layer 225a provided on the entire surface of the insulating layer 223 and the entire surface of the insulating layer 223 including the first wiring layer 225a. An interlayer insulating layer 225b and a second wiring layer 225c provided on the entire surface of the interlayer insulating layer 225b may be included.

The first wiring layer 225a includes a plurality of first light source driving wirings made of copper. The plurality of first light source driving wires transmit data voltages for each pixel supplied through the connector 270 to the point light source array 250 .

The second wiring layer 225c includes at least one second light source driving wiring made of copper. The at least one second light source driving wire transmits a common voltage, that is, a cathode voltage supplied through the connector 270 to the point light source array 250 .

The interlayer insulating film 225b is interposed between the first wiring layer 225a and the second wiring layer 225c to electrically insulate the first wiring layer 225a and the second wiring layer 225c.

Each of the insulating layer 223, the interlayer insulating film 225b, the front protective layer 227, and the back protective layer 229 may be made of the same insulating material or different materials, such as epoxy or polyimide. can be made of material.

As such, the driving wiring layer 225 has a multilayer wiring structure in which insulating layers and wiring layers are alternately stacked, so that each of the plurality of point light sources 251 and the wiring layer can be easily connected.

Each of the plurality of point light sources 251 is connected to an anode electrode connected to the first light source driving wire of the first wiring layer 225a provided on the front portion 230 and to the second light source driving wire of the second wiring layer 225c. It includes a cathode electrode.

The anode electrode of each of the plurality of point light sources 251 passes through the front protective layer 227, the second wiring layer 225c, and the interlayer insulating film 225b to expose a partial region of the first light source driving wiring of the first wiring layer 225a. is electrically connected to the first light source driving wiring of the first wiring layer 225a through the first via hole VH1. The cathode electrode of each of the plurality of point light sources 251 is connected to the second wiring layer (through the second via hole VH2 penetrating the front protective layer 227 to expose a partial area of the second light source driving wiring of the second wiring layer 225a). 225c) is electrically connected to the second light source driving wire. Accordingly, each of the plurality of point light sources 251 transmits the data voltage for each pixel supplied to the anode electrode through the first light source driving wiring of the first wiring layer 225a and the second light source driving wiring of the second wiring layer 225c. It emits light in proportion to the amount of current flowing by the common voltage supplied to the cathode electrode.

The connector 270 is mounted on the rear protective layer 229 provided on the side wall portion 230 and connected to the driving wiring layer 225 . For example, the connector 270 includes a third via hole penetrating the rear protective layer 229, the base member 221, and the insulating layer 223 to expose a partial region of the first light source driving wiring of the first wiring layer 225a. The back passivation layer 229 exposes a plurality of first terminals connected to the first light source driving wiring of the first wiring layer 225a through VH3 and a partial area of the second light source driving wiring of the second wiring layer 225c. and connected to the second light source driving wiring of the second wiring layer 225c through the fourth via hole VH4 penetrating the base member 221, the insulating layer 223, the first wiring layer 225a, and the interlayer insulating film 227. and at least one second terminal. Accordingly, the present invention can prevent the bezel width from being increased by the connector 270 by disposing the connector 270 on the inner surface of the side wall portion 230 .

Additionally, as shown in FIG. 5, each of the first to fourth border display modules 200a, 200b, 200c, and 200d has a bending portion BP between the side wall portion 210 and the front portion 230, The bending part BP includes a cutting line CL in which a portion of the base member 221 is removed to expose the rear surface of the driving wiring layer 225 .

The cutting line CL is the base member 221 positioned above the side wall portion 210 adjacent to the front portion 230 so that a partial region of the driving wiring layer 225 is exposed along the longitudinal direction of the front portion 230. A portion of the area is removed and provided. Accordingly, since the front portion 230 is bent from the side wall portion 210 through the driving wiring layer 225, which is relatively more flexible than the base member 221, the present invention can implement the bending portion BP in a right angle shape, , Damage to the driving wiring layer 225 due to the bending stress may be minimized by minimizing the bending stress applied to the driving wiring layer 225 at the bending part BP.

6A and 6B are cross-sectional views of a border display module according to another example of the present invention, in which the structure of a side wall portion is changed. Accordingly, in this example, only the structure of the side wall portion will be described.

First, when FIG. 6A is connected with FIG. 4 , in the first to fourth frame display modules 200a, 200b, 200c, and 200d, the side wall portion 210 according to the modified example is an upper side wall portion connected to the front portion 230. 211, and a lower side wall portion 212 bent from the upper side wall portion 211.

The upper side wall portion 211 is bent vertically from the front portion 230 .

The lower side wall part 212 is bent from the lower part of the upper side wall part 211 and disposed below the front part 230 . In this case, the sidewall bending portion 213 between the upper sidewall portion 211 and the lower sidewall portion 212 may have a straight line shape parallel to the front portion 230 or an oblique shape inclined at a predetermined angle. A connector 270 is mounted on the front surface of the lower side wall portion 212 .

The connector 270 is mounted on the front protective layer 227 in the same way as the point light source 251 . That is, the connector 270 has a first via hole (through the front protective layer 227, the second wiring layer 225c, and the interlayer insulating film 225b to expose a partial region of the first light source driving wiring of the first wiring layer 225a). The front passivation layer 227 is formed to expose a plurality of first terminals connected to the first light source driving wiring of the first wiring layer 225a through VH1 and a partial area of the second light source driving wiring of the second wiring layer 225a. It includes at least one second terminal connected to the second light source driving wire of the second wiring layer 225c through the penetrating second via hole VH2. Accordingly, the connector 270 is mounted on the front surface of the lower side wall part 212 bent from the lower part of the upper side wall part 211 so as to be disposed below the front part 230, so that the front surface of the base member 221 ( Despite being mounted on the front, it does not protrude outside.

Accordingly, the present invention can connect the connector 270 and the driving wiring layer 225 without forming a via hole in the base member 221, and the edge display modules 200a, 200b, 200c, and 200d can be formed due to the sidewall bending portion 213. ) can increase the stiffness.

Next, when FIG. 6B is connected with FIG. 5 , in the first to fourth frame display modules 200a, 200b, 200c, and 200d, the sidewall portion 210 according to another modified example includes a sidewall cutting line 215. do.

The sidewall cutting line 215 is provided by removing a portion of the base member 221 positioned below the sidewall portion 210 so that the rear surface of the driving wiring layer 225 is exposed. Accordingly, the sidewall portion 210 may have an upper sidewall portion 211 and a lower sidewall portion 212 based on the sidewall cutting line 215 . Since the driving wiring layer 225 exposed to the outside is relatively more flexible than the base member 221, the lower sidewall portion 210 is disposed below the front portion 230 by bending the driving wiring layer 225 exposed to the outside. can Accordingly, even though the connector 270 is mounted on the front surface of the lower side wall portion 212 disposed below the front portion 230 as shown in FIG. 6A, it is also mounted on the front surface of the base member 221. It doesn't protrude outward though.

7A to 7C are diagrams for explaining an additional configuration of an edge display module according to the present invention.

First, as shown in FIG. 7A , the edge display modules 200a, 200b, 200c, and 200d according to the present invention further include a light source protection member 290.

The light source protection member 290 is coated on the front portion 230 to cover the point light source array 250 . The light source protection member 290 may include a thermosetting transparent material or a photocurable transparent material. For example, the light source protection member 290 may be optical clear adhesive (OCA) or optical clear resin (OCR). The light source protection member 290 prevents the point light source 251 of the point light source array 250 from being damaged by an external impact.

Additionally, the light source protection member 290 may contain light scattering particles. For example, the light scattering particles may include at least one of a bead having a high refractive index and a hollow bead. In this case, the present invention can minimize the hot spot phenomenon due to the dark portion between the point light sources 251 by diffusing the light emitted from the point light source array 250 .

Additionally, the edge display modules 200a, 200b, 200c, and 200d according to the present invention may further include a polarizing film attached to the light source protection member 290. The polarizing film polarizes light emitted from the point light source array 250 along the second polarization axis by having the same second polarization axis as that of the upper polarization member of the display panel.

Next, as shown in FIG. 7B , the edge display modules 200a, 200b, 200c, and 200d according to the present invention further include an optical member 292.

The optical member 292 according to an example is attached to the front part 230 to cover the point light source array 250 through an adhesive member 292a such as double-sided tape or adhesive. For example, the optical member 292 may be a diffusion plate or a diffusion sheet. The optical member 292 prevents the point light source 251 of the point light source array 250 from being damaged by an external impact, and diffuses light emitted from the point light source array 250 so that the points between the point light sources 251 Minimize the hot spot phenomenon caused by the dark part of the

Additionally, a polarizing film may be attached to the optical member 292 .

As shown in FIG. 7C , the optical member 292 according to another example includes a base film 292b covering the point light source array 250 and a plurality of lenticular lenses 292c convexly provided on the upper surface of the base film 292b. ).

The base film 292b is attached to the front part 230 to cover the point light source array 250 through an adhesive member 292a such as double-sided tape or adhesive.

Each of the plurality of lenticular lenses 292c extends from the upper surface of the base film 292b while having a semicircular cross section. Each of the plurality of lenticular lenses 292c overlaps a plurality of point light sources 251 disposed on the same line. At this time, the vertex of each of the plurality of lenticular lenses 292c overlaps the central portion of the point light source 251 . The optical member 292 prevents the point light source 251 of the point light source array 250 from being damaged by an external impact, and diffuses light emitted from the point light source array 250 so that the points between the point light sources 251 Minimize the hot spot phenomenon caused by the dark part of the

FIG. 8A is a view for explaining another additional configuration of the edge display module according to the present invention, and FIG. 8B is a cross-sectional view along the line III-III′ shown in FIG. 8A.

Referring to FIGS. 8A and 8B , the edge display modules 200a, 200b, 200c, and 200d according to the present invention further include a barrier member 295.

The barrier member 295 includes a plurality of horizontal barriers 295b and a plurality of vertical barriers 295c defining a plurality of openings 295a exposing each of the plurality of point light sources 251 to the outside.

The plurality of horizontal barriers 295b are disposed between adjacent point light sources 251 along the vertical direction Y so as to be parallel to the horizontal direction X. The plurality of vertical barriers 295c are disposed between adjacent point light sources 251 along the horizontal direction X parallel to the vertical direction Y. The height H1 of each of the horizontal barrier 295b and the vertical barrier 295c is set higher than the height H2 of the point light source 251 .

Each of the plurality of openings 295a is provided by crossing a plurality of horizontal barriers 295b having regular intervals and a plurality of vertical barriers 295c having regular intervals, thereby exposing each of the plurality of point light sources 251 to the outside. let it

As such, the barrier member 295 is provided between the adjacent point light sources 251 along each of the horizontal and vertical directions to spatially separate the adjacent point light sources 251, thereby increasing the light emission efficiency of the point light sources 251. increase

The barrier member 295 according to an example may be made of the same material as the pixel defining pattern provided on the upper substrate of the display panel. In this case, the front portion 230 of the barrier member 295 according to an example is formed by a screen printing process using a mask having an opening pattern overlapping between adjacent point light sources 251 along each of the horizontal and vertical directions. can be placed on top.

The barrier member 295 according to another example may include a barrier plate having a plurality of openings 295a overlapping each of the plurality of point light sources 251 . In this case, the barrier plate may be attached to the upper surface of the front part 230 through an adhesive member such as double-sided tape or adhesive.

Additionally, the edge display modules 200a, 200b, 200c, and 200d according to the present invention may further include an optical member disposed on the upper surface of the barrier member 295. The optical member may be a diffusion sheet or a diffusion plate.

9 is a diagram for explaining a data processing circuit of a control board according to an embodiment of the present invention.

Referring to FIG. 9 with FIG. 3 , the data processing circuit 510 of the control board 500 according to an example of the present invention includes a data extractor 512, a timing controller 514, and a bezel data generator 516 includes

The data extraction unit 512 receives an input image signal Idata and a timing synchronization signal supplied from an external host driving system or integrated control board, and displays the display panel 100 from the received input image signal Idata. Panel image data Pdata having a resolution set in the area AA and bezel image data Bdata having a resolution set in the bezel area BA are respectively extracted.

The timing controller 514 aligns the panel image data Pdata supplied from the data extractor 512 to fit the pixel arrangement structure of the display panel 100 to generate panel pixel data, and generates panel pixel data. Provided to the data driving integrated circuit 330. In addition, the timing controller 514 generates a data control signal and a gate control signal, respectively, based on the timing synchronization signal to control driving of the data driving integrated circuit 330 and the embedded gate driving circuit, respectively.

The bezel data generator 516 aligns the bezel image data Bdata supplied from the data extractor 512 to fit the pixel arrangement structure of the bezel concealment module 200 to generate bezel pixel data, and the generated bezel Provides pixel data to the LED driver 420 . That is, the bezel data generator 516 aligns the bezel image data Bdata to suit the pixel arrangement structure of each of the first to fourth frame display modules 200a, 200b, 200c, and 200d, and arranges the bezel for each module. Pixel data is generated, and the generated bezel pixel data for each module is provided to the LED driver 420 .

The LED driver 420 converts the bezel pixel data for each module provided from the bezel data generator 516 into data voltages for each bezel pixel, and outputs the first to fourth frame display modules 200a, 200b, 200c, and 200d, respectively. By supplying to the point light source array 250 of , a bezel image is displayed.

10A and 10B are diagrams illustrating images displayed on a conventional display device and a display device according to the present invention, respectively.

First, as can be seen in FIG. 10A, in the conventional display device, an image is displayed only in the display area AA of the display panel, so that the front case 1 covering the front edge of the display panel causes the bezel area BA to be displayed. It can be seen that the dark part is generated.

On the other hand, as can be seen in FIG. 10B, the display device according to the present invention displays a panel image in the display area AA of the display panel and simultaneously displays a bezel image in the bezel area BA through a bezel concealing module. As the bezel area BA is concealed when the panel 100 is driven, the dark portion of the bezel area BA is removed, and as a result, the bezel is zeroed out.

FIG. 11 is a diagram for explaining a multi-screen display device according to the present invention, and FIG. 12 is a cross-sectional view along the line IV-IV′ shown in FIG. 11 .

Referring to FIGS. 11 and 12 , the multi-screen display device according to the present invention includes a plurality of screen modules 600a, 600b, 600c, and 600d and a plurality of module connection members 700.

Each of the plurality of screen modules 600a, 600b, 600c, and 600d is arranged in the form of N (N is a positive integer greater than or equal to 2) × M (M is a positive integer greater than or equal to 2) to display individual images or to display a single image. split and display Each of the plurality of screen modules 600a, 600b, 600c, and 600d includes the display device 10 shown in FIGS. 1 to 9 according to the present invention, and redundant description thereof will be omitted.

Each of the plurality of module connecting members 700 connects the plurality of screen modules 600a, 600b, 600c, and 600d to each other. That is, each of the plurality of module connecting members 700 implements a multi-screen display device by connecting side surfaces of two adjacent screen modules 600a, 600b, 600c, and 600d arranged in a lattice form.

Each of the plurality of module connection members 700 is inserted into the pin hole 171 of the display connection protrusion 170 provided in the panel support frame 120 of each of the two display devices facing each other, thereby connecting two adjacent display devices. connect the sides Each of the plurality of module connection members 700 according to an example may be a support rod inserted into the pin hole 171 . One side of the support rod passes through the pin insertion hole 200h provided in the edge display module 200b of the first display device among the two adjacent display devices, and the display connection protrusion provided on the panel support frame 120 of the first display device ( 170), and the other side of the support rod passes through the pin insertion hole 200h provided in the edge display module 200a of the second display device among the two adjacent display devices to form a panel of the second display device. It may be inserted into the pin hole 171 of the display connection protrusion 170 provided in the support frame 120 .

The multi-screen display device according to the present invention further includes an integrated control board 550.

The integrated control board 550 receives a raw video signal supplied from an external host driving system and displays the received raw video signal on each display device of the plurality of screen modules 600a, 600b, 600c, and 600d. and an image signal generation unit 552 for generating input image signals for each module to be used.

The image signal generator 552 receives total resolution information including the resolution of the display area AA and the resolution of the bezel area BA from each of the display devices of the plurality of screen modules 600a, 600b, 600c, and 600d. Then, the raw image signal is divided to correspond to the total resolution information for each display device, and an input image signal for each module is generated and provided to the corresponding display device. Accordingly, each display device extracts panel image data and bezel image data from the input image signal supplied from the image signal generator 552, displays the panel image data on the display area of the display panel, and simultaneously displays the bezel image data. is displayed on the bezel area.

13A and 13B are diagrams illustrating images displayed on a conventional multi-screen display device and a multi-screen display device according to the present invention, respectively.

First, as can be seen from FIG. 13A, in the conventional multi-screen display device, an image is displayed only in the display area AA of each of a plurality of display devices, so that the boundary between the display devices connected to each other is caused by the front case of each of the plurality of display devices. It can be seen that a dark part is generated in the part, and a sense of disconnection occurs in the entire screen due to the dark part of the boundary part.

On the other hand, as can be seen in FIG. 13B, the multi-screen display device according to the present invention displays a panel image in the display area AA of each display device and simultaneously displays a bezel image in the bezel area BA of each display device. By doing this, the bezel area BA of each display device is replaced with a bezel image, and the dark portion of the bezel area BA is removed, and as a result, it can be seen that one image is displayed on the entire screen.

As a result, the multi-screen display device according to the present invention can display one image without disconnection on the entire screen by displaying the bezel image in the bezel area BA of each display device.

Meanwhile, in the example of the present invention, it has been described that the backlight unit is configured as a direct-type backlight unit, but the backlight unit is not limited thereto and may be changed to an edge-type backlight unit. That is, since the present invention can implement a zero bezel regardless of the bezel width by displaying a bezel image in the bezel area generated by the mechanism, even if the backlight unit is changed to an edge-type backlight unit with a relatively wide bezel width, a manufacturing bezel can be implemented. can

Also, in the example of the present invention, the display panel has been described as being made of non-emitting pixels, but is not limited thereto, and the display panel can be changed to an organic light emitting display panel or a plasma display panel made of self-emitting pixels. In this case, the aforementioned backlight unit is omitted.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention belongs that various substitutions, modifications, and changes are possible without departing from the technical details of the present invention. It will be clear to those who have knowledge of Therefore, the scope of the present invention is indicated by the following claims, and 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.

10: display device 100: display panel
120: panel support frame 140: rear cover
160: backlight unit 170: display connection protrusion
200: bezel concealment module 200a, 200b, 200c, 200d: border display module
210: side wall part 230: front part
250: point light source array 251: point light source
270: connector 290: light source protection member
292 optical member 295 barrier member
300: first driving circuit 400: second driving circuit
500: control board 510: data processing circuit
550: integrated control board 600a, 600b, 600c, 600d: screen module
700: module connection member

Claims (15)

a display panel having a display area where an image is displayed and a non-display area surrounding the display area; and
A bezel hiding module displaying an image in a bezel area covering the non-display area;
The display panel has a first non-display area and a second non-display area parallel to a first length direction, and a third non-display area and a fourth non-display area parallel to a second length direction crossing the first length direction. ,
The bezel hiding module covers first to fourth non-display areas of the display panel, and includes first to fourth edge display modules in which point light source arrays are disposed;
Each of the first to fourth border display modules,
Base member made of metal;
an insulating layer disposed on a first surface of the base member;
a driving wiring layer disposed on the insulating layer and including a first wiring layer disposed on the insulating layer, an interlayer insulating film disposed on the first wiring layer, and a second wiring layer disposed on the interlayer insulating film;
a first protective layer disposed on the second wiring layer of the driving wiring layer;
a second protective layer disposed on a second surface of the base member; and
a connector disposed on the second protective layer and electrically connected to the driving wiring layer;
The point light source array is disposed on the first protective layer,
A first electrode of the point light source array is electrically connected to the first wiring layer through a first hole penetrating the first passivation layer, the second wiring layer, and the interlayer insulating layer, and a second electrode is connected to the first passivation layer. electrically connected to the second wiring layer through a second hole penetrating the
The first terminal of the connector is electrically connected to the first wiring layer through a third hole penetrating the second protective layer, the base member, and the insulating layer, and the second terminal is connected to the second protective layer and the base. A display device electrically connected to the second wiring layer through a fourth hole penetrating the member, the insulating layer, the first wiring layer, and the interlayer insulating film. delete delete According to claim 1,
Each of the first to fourth border display modules,
a sidewall portion covering a side surface of the display panel; and
and a front portion bent from an upper portion of the side wall portion to cover a non-display area of the display panel and supporting the point light source array. delete delete According to claim 4,
Each of the first to fourth border display modules,
having a bending portion between the side wall portion and the front portion;
The bending portion includes a cutting line in which a partial area of the base member is removed. According to claim 4,
The point light source array is a micro light emitting diode chip mounted on the front surface, the display device. According to claim 8,
Each of the first to fourth edge display modules further includes a light source protection member covering the point light source array. According to claim 8,
Each of the first to fourth edge display modules includes an optical member covering the point light source array. According to claim 8,
Each of the first to fourth edge display modules further comprises a barrier member that spatially separates between the plurality of point light sources. The method of any one of claims 1, 4, 7 to 11,
a control board having a data processor generating panel image data and bezel image data based on an input image signal;
a first driving circuit that displays the panel image data on the display panel; and
The display device further comprises a second driving circuit for displaying the bezel image data on the bezel hiding module. a plurality of screen modules; and
It includes a plurality of module connecting members for connecting the plurality of screen modules to each other,
Each of the plurality of screen modules has a display device according to any one of claims 1, 4, 7 to 11, a multi-screen display device. According to claim 13,
The display device,
a control board having a data processing circuit generating panel image data and bezel image data based on an input image signal;
a first driving circuit that displays the panel image data on the display panel; and
The multi-screen display device further comprising a second driving circuit for displaying the bezel image data on the bezel concealing module. 15. The method of claim 14,
The multi-screen display device further comprises an integrated control board having an image signal generation unit generating an input image signal for each module to be displayed on the display device of each of the plurality of screen modules based on raw image signals.

Images