KR20230098959A - Complex display panels - Google Patents

Abstract

The purpose of the invention is to provide a composite display panel which can provide an uninterrupted screen at the boundary between display panels while implementing a composite display panel in which a plurality of display panels are connected to each other. The composite display panel includes: a first display panel including a first panel layer, a first guide panel disposed on an outer surface of the first panel layer, and a first case top coupled to the first guide panel; a second display panel including a second panel layer, a second case top disposed on an outer surface of the second panel layer, and a second guide panel coupled to the second case top; and a third display panel disposed at a boundary between the first display panel and the second display panel and including an LED.

Description

COMPLEX DISPLAY PANELS}

The present disclosure relates to a composite display panel, and more particularly, to a composite display panel in which a plurality of panels are connected to each other.

Until now, display devices such as liquid crystal display devices, organic light emitting display devices, LED display devices, and the like have been developed. In addition, the display device may be used for a small smart phone or a large TV.

Recently, several display devices are arranged side by side or arranged horizontally and vertically to be used as one large display device, and are also used as a so-called video wall.

Since the display device needs to dispose the housing on the outside, bezels are essential on the top, bottom, left, and right sides of the screen when viewed from the front. Therefore, when several display devices are connected, two bezels exist at the boundary of adjacent display devices. Accordingly, it is difficult to implement a seamless screen, a so-called seamless screen.

SUMMARY OF THE INVENTION The present disclosure is intended to solve the above problems, and provides a composite display panel capable of providing a seamless screen at a boundary between display panels while implementing a composite display panel in which a plurality of display panels are connected to each other.

A composite display panel according to the present disclosure includes a first display panel including a first panel layer, a first guide panel disposed on an outer surface of the first panel layer, and a first case top coupled to the first guide panel; a second display panel including a second panel layer, a second case top disposed on an outer surface of the second panel layer, and a second guide panel coupled to the second case top; and a third display panel including LEDs and disposed on a boundary between the first display panel and the second display panel.

The third display panel may be disposed on tops of the first and second case tops.

The first panel layer includes a black matrix formed at an edge, and an end of the third display panel may protrude inward more than or the same as an end of the black matrix.

The third display panel may include a third PCB, and the third PCB may be disposed under the top of the second case and disposed on a side surface of the second guide panel.

A third connection line connecting the third PCB and the third display panel may be further included, and the third connection line may be disposed between the top of the first case and the top of the second case.

The vertical length of the second case top may be shorter than the vertical length of the first case top.

It may further include a third power supply that supplies power to the third PCB and is disposed under the bottom of the second cover.

The first display panel may further include a first PCB disposed between the first case top and the first guide panel.

The third display panel is disposed inside the top of the first case,

The composite display panel may further include a fourth display panel disposed inside the top of the second case and including LEDs.

The first panel layer and the second panel layer may include a transparent resin formed on edges, and the third display panel and the fourth display panel may overlap the transparent resin.

An end of the third display panel may protrude inward more than or equally protrudes from an end of the transparent resin, and an end of the fourth display panel may protrude inward more than or equal to an end of the transparent resin.

The third display panel may be supported on top of the first guide panel and the fourth display panel may be supported on top of the second guide panel.

Each of the first case top and the second case top may include a vertical portion coupled to the guide panel and a protrusion protruding upward from the vertical portion.

The protrusion may include an inclined surface.

The first integrated PCB may further include a first integrated PCB in which the first panel driver driving the first display panel and the third panel driver driving the third display panel are integrated, and the first integrated PCB may be disposed below the bottom of the first cover. there is.

It further includes a first connection line connecting the first display panel and the first integrated PCB, the first connection line is disposed between the first case top and the first guide panel, and connects the third display panel and the first integrated PCB. A third connecting line may be further included, and the third connecting line may be disposed between the first case top and the first guide panel.

The second integrated PCB may further include a second integrated PCB in which the second panel driver driving the second display panel and the fourth panel driver driving the fourth display panel are integrated, and the second integrated PCB may be disposed under the bottom of the second cover. there is.

It further includes a second connection line connecting the second display panel and the second integrated PCB, the second connection line is disposed between the second case top and the second guide panel, and connects the fourth display panel and the second integrated PCB. A fourth connection line for connecting may be further included, and the fourth connection line may be disposed between the second case top and the second guide panel.

A composite display panel according to the present disclosure can provide a composite display panel that displays a seamless screen by arranging an LED display panel on a boundary between two display panels.

The LED display panel is disposed above the black matrix of the left and right display panels and protrudes more inward than the black matrix, thereby removing the bezel in the middle area.

Efficient spatial arrangement can be achieved by attaching the driver of the LED display panel to the side of one of the left and right display panels.

Efficient spatial arrangement can be achieved by arranging the connection line connected to the driver of the LED display panel between the outer housings of the left and right display panels.

The LED display panel is disposed under the transparent resin of the left and right display panels and protrudes more inward than the transparent resin, thereby eliminating the bezel in the middle region.

Efficient spatial arrangement can be achieved by integrating the driving units of the LED display panel with the driving units of the left and right display panels.

Since the LED display panel is supported by the left and right display panel housings, a solid composite display panel can be provided.

1 is a block diagram illustrating a composite display panel according to the present disclosure.
2 is a diagram schematically illustrating a composite display panel according to the present disclosure.
FIG. 3 is a cross-sectional view of a composite display panel according to an exemplary embodiment of the present disclosure taken along line AA′ of FIG. 2 .
FIG. 4 is an enlarged cross-sectional view of the first display panel in the cross-sectional view of FIG. 3 .
FIG. 5 is an enlarged cross-sectional view of the third display panel in the cross-sectional view of FIG. 3 .
FIG. 6 is an enlarged view centering on the second display panel in the cross-sectional view of FIG. 3 .
FIG. 7 is a cross-sectional view of a composite display panel according to another exemplary embodiment of the present disclosure taken along line AA′ of FIG. 2 .
FIG. 8 is an enlarged cross-sectional view of the first display panel in the cross-sectional view of FIG. 7 .
FIG. 9 is an enlarged cross-sectional view of the second display panel in the cross-sectional view of FIG. 7 .

Hereinafter, embodiments will be described with reference to the drawings. In this specification, when an element (or region, layer, section, etc.) is referred to as being “on,” “connected to,” or “coupled to” another element, it is on the other element. This means that they can be directly connected/coupled or a third component may be placed between them.

Like reference numerals designate like components. Also, in the drawings, the thickness, ratio, and dimensions of components are exaggerated for effective description of technical content. “And/or” includes any combination of one or more that the associated elements may define.

Terms such as first and second may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component without departing from the scope of the present embodiments, and similarly, the second component may also be referred to as a first component. Singular expressions include plural expressions unless the context clearly dictates otherwise.

Terms such as "below", "lower side", "above", and "upper side" are used to describe the relationship between components shown in the drawings. The above terms are relative concepts and will be described based on the directions shown in the drawings.

"include." or "to have." The terms such as are intended to specify that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features or numbers, steps, operations, components, parts, or It should be understood that it does not preclude the possibility of existence or addition of combinations thereof.

In addition, the present disclosure will be described with a liquid crystal display panel as an example for convenience of description. However, the concept of the present disclosure is not limited to the liquid crystal display panel, and may be equally applied to other types of display panels, such as an organic light emitting display panel and a mini LED display panel.

In addition, the present disclosure is exemplarily described as a direct light type liquid crystal display panel for convenience of description. However, the concept of the present disclosure can be equally applied to other forms, for example, side light type liquid crystal display panels.

1 is a block diagram illustrating a composite display panel according to the present disclosure.

2 is a diagram schematically illustrating a composite display panel according to the present disclosure.

A composite display panel according to the present disclosure will be described with reference to FIGS. 1 and 2 .

A composite display panel according to the present disclosure may include a first display panel 100 , a second display panel 200 and a third display panel 300 .

The first display panel 100 may include a first panel layer 110, a backlight driver 130, a timing controller 181, a gate driver 182, a data driver 183, and a first power supply 190. can

The first panel layer 110 may include a lower substrate on which a switching element is disposed and an upper substrate on which a color filter is disposed. In addition, the first panel layer 110 may include a lower polarizing film disposed under the lower substrate and an upper polarizing film disposed on the upper substrate. A plurality of pixels may be disposed on the first panel layer 110 . A plurality of pixels may be arranged in a matrix form.

The backlight driver 130 may provide light to the first panel layer 110 so that an image may be displayed through a liquid crystal display panel that does not have a self-light emitting element. To this end, the backlight driver 130 may include a backlight driving circuit and a plurality of light sources disposed above the backlight driving circuit. In addition, the backlight driver 130 may include a diffusion plate that scatters and refracts the light emitted from the light source and spreads it to the first panel layer 110 and an optical sheet layer formed of a plurality of layers.

The timing controller 181 may receive an image signal and a control signal from the outside. The image signal may include a plurality of grayscale data. The control signal may include a horizontal synchronizing signal, a vertical synchronizing signal, and a main clock signal. The timing controller 181 processes the image signal and the control signal to suit the operating conditions of the first display panel 100, and outputs a gate control signal GS, a data control signal DS, and a power control signal PS. can do.

The gate driver 182 may be connected to pixels of the first panel layer 110 through a plurality of gate lines GL. The gate driver 182 may generate a gate on/off signal based on the gate control signal GS output from the timing controller 181 . The gate driver 182 may output the generated gate on/off signal to the pixels through the plurality of gate lines GL.

The data driver 183 may be connected to pixels of the first panel layer 110 through a plurality of data lines DL. The data driver 183 may generate a data signal based on the data control signal DS and image data output from the timing controller 181 . The data driver 183 may output the generated data signals to the pixels through the data line DL.

The first power supply 190 is a device that supplies power necessary for driving the first display panel 100 . For example, the first power supply 190 includes power P1 required to drive the timing controller 181, power P2 required to drive the gate driver 182, and power required to drive the data driver 183. (P3) and the light source of the backlight driver 130 and the power source P4 required for driving the backlight driving circuit may be supplied.

As described above, the timing controller 181, the gate driver 182, the data driver 183, and the first power supply 190 are each composed of separate integrated circuits (ICs) or at least partially integrated. It may consist of an integrated circuit. Such an integrated circuit may be mounted on a Printed Circuit Board (PCB) or may be mounted on a flexible PCB. In addition, although the gate driver 182 and the data driver 183 are shown as separate components from the first panel layer 110 in FIG. 1 , the gate driver 182 and the data driver 183 are 110) may be implemented in an in-panel method integrally formed.

The second display panel 200 may include a second panel layer 210, a backlight driver 230, a timing controller 281, a gate driver 282, a data driver 283, and a second power supply 290. can

The functions and operations of components of the second display panel 200 include the first panel layer 110, the timing controller 181, the gate driver 182, and the first power supply unit described in the description of the first display panel 100. Corresponds to (190).

The third display panel 300 may include a third panel layer 310 , a third panel driver 380 and a third power supply 390 .

The third panel layer 310 may include a plurality of Light Emitting Diodes (LEDs). To this end, the third display layer 310 may include a substrate and a plurality of LEDs disposed on the substrate. Each LED may be an LED capable of expressing any one of at least three colors (red, green, blue). An LED according to an embodiment of the present specification may also be referred to as a mini LED or a micro LED. Each LED may have a size of about 0.2 mm in width, 0.2 mm in length, and 0.2 mm in height, but is not limited thereto. Each of the three LEDs is referred to as a sub-pixel, and a group formed by the three LEDs may be referred to as a pixel. An interval between pixels may be 0.2 mm, but is not limited thereto.

The third panel driver 380 may be a circuit that controls the LEDs of the third panel layer 310 . The third panel driver 380 may output a signal for controlling on/off of the LEDs of the third panel layer 310 . The third panel driver 380 may be in the form of an IC chip mounted on a PCB or may be in the form of an IC chip interposed in a flexible PCB. The third panel driver 380 may output a control signal to the third panel layer 310 through the connection line.

The third power supply unit 390 is a device that supplies driving power necessary for driving the third panel driver 380 . The third power supply unit 390 may be in the form of a power supply module mounted on a PCB. The third power supply unit 390 may supply power to the third panel driving unit 380 through a power supply line.

Although the third panel driving unit 380 and the third power supply unit 390 are shown as independent components in FIG. 1, the third panel driving unit 380 and the third power supply unit 390 may be integrated on one PCB. there is.

According to the present disclosure, the third display panel 300 may be disposed at a boundary between the first display panel 100 and the second display panel 200 . For example, the third display panel 300 is formed on top of the first display panel 100 and the second display panel 200 in a boundary area between the first display panel 100 and the second display panel 200 . can be placed. Such an embodiment will be described later with reference to FIGS. 3 to 6 .

For another example, the third display panel 300 may be disposed inside the first display panel 100 at an edge area of the first display panel 100 . In this case, an additional fourth display panel having a shape corresponding to the third display panel 400 may be disposed inside the second display panel 200 at an edge area of the second display panel 200 . In this case, the third panel layer 310 may be disposed below the first panel layer 110 , and the fourth panel layer 410 may be disposed below the second panel layer 210 . Such an embodiment will be described later with reference to FIGS. 7 to 9 .

Meanwhile, a composite display panel according to the present disclosure may include a first display panel 100 , a second display panel 200 , and a third display panel 300 as shown in FIG. 2 . Since the third display panel 300 is disposed on the boundary between the first display panel 100 and the second display panel 200 , a bezel that may be formed in the center of the composite display panel can be removed or minimized. As shown in FIG. 2 , bezels are formed on the upper, lower, left, and right edges of the composite display panel, but the center area (ie, the boundary between the first display panel 100 and the second display panel 200) Since the silver third display panel 300 is disposed, a bezel that may be formed in the center of the composite display panel may be removed.

Meanwhile, as described above, the composite display panel may additionally include a fourth display panel (not shown). When a fourth display panel (not shown) is further included, each of the third display panel 300 and the fourth display panel (not shown) is a boundary between the first display panel 100 and the second display panel 200. Therefore, a bezel that may be formed in the center of the composite display panel may be removed or minimized. An embodiment in which the composite display panel additionally includes the fourth display panel will be described later with reference to FIGS. 7 to 9 .

FIG. 3 is a cross-sectional view of a composite display panel according to an exemplary embodiment of the present disclosure taken along line AA′ of FIG. 2 .

FIG. 4 is an enlarged cross-sectional view of the first display panel in the cross-sectional view of FIG. 3 .

FIG. 5 is an enlarged cross-sectional view of the third display panel in the cross-sectional view of FIG. 3 .

FIG. 6 is an enlarged view centering on the second display panel in the cross-sectional view of FIG. 3 .

A composite display panel according to an exemplary embodiment of the present disclosure will be described with reference to FIGS. 3 to 6 .

The first display panel 100 may include the first panel layer 110 . The first panel layer 110 may include a lower substrate 113 on which switching elements are disposed, an upper substrate 112 disposed on the lower substrate 113, an upper polarizing film 111 and a lower polarizing film 114. can The first display panel 100 may be a liquid crystal panel and the first display panel layer 110 may include a liquid crystal layer. In the lower substrate 113 , pixels may be formed in each intersection area of gate lines and data lines. A pixel may include a thin film transistor, a common electrode, and a pixel electrode. The thin film transistor may perform a switching role of transmitting and controlling an electrical signal to each pixel. A common voltage for driving the liquid crystal is applied to the common electrode. The pixel electrode may be disposed on a passivation layer covering the common electrode and connected to the thin film transistor. The upper substrate 112 may include a color filter and a black matrix. R (Red), G (Green), and B (Blue) patterns may be formed in the color filter. The black matrix may be disposed between the R, G, and B patterns of the color filters. A column spacer may be disposed between the upper substrate 112 and the lower substrate 113 to maintain a cell gap.

In addition, the upper substrate 112 may include a black matrix 115 formed on the plane of the first panel layer 110 in a closed loop along an edge. The black matrix 115 may be formed on a surface where the upper substrate 112 and the lower substrate 133 contact each other. The black matrix 115 may be formed to a predetermined length in an inward direction. An end of the black matrix 115 may be formed shorter in an inward direction than an end of the third display panel 300 or may be formed the same. For example, referring to FIG. 4 , the end of the third display panel 300 protrudes more inward (direction B) than the end of the black matrix 115 based on the vertical virtual line VL. or may be equally extruded. This is to prevent the black matrix 115 from being exposed when viewing the composite display panel according to the present disclosure from the front. In addition, since the black matrix 115 is covered by the third display panel 300, the first display panel 100, the third display panel 300, and the second display panel 200 are seamlessly connected. screen can be displayed. The black matrix 115 like this defines a bezel formed on the outer edge of the conventional display panel, but according to the present embodiment, the first display panel is formed by the third display panel 300 disposed above the black matrix 115. The bezel at the boundary between 100 and the second display panel 200 may be removed.

Meanwhile, in this specification, the inward direction refers to the center direction of the display panel. For example, an inward direction of the first display panel 100 is a direction toward the center of the first display panel 100 and is a direction B shown in FIG. 4 .

The upper polarizing film 111 may be attached to an upper portion of the upper substrate 112 , and the lower polarizing film 114 may be disposed on a lower portion of the lower substrate 113 . The upper polarizing film 111 and the lower polarizing film 114 may have different polarization functions through stretching processes in opposite directions, and may have shrinkage forces in opposite directions due to stretching. Due to the opposite contraction forces, the first display panel 100 can achieve a flat state without being bent upward or downward.

An optical sheet layer 121 and a diffusion plate 122 may be disposed below the first panel layer 110 . The diffusion plate 122 may be formed in a flat plate shape having a constant thickness. The diffusion plate 122 diffuses the light emitted from the plurality of light sources 131 and propagates it toward the first panel layer 110 . The diffusion plate 122 may be spaced apart from the light source 131 by a light diffusion distance. The optical sheet layer 121 is disposed above the diffusion plate 122 and condenses and diffuses the light so that the luminance of the first display panel 100 can be increased to propagate the light toward the first panel layer 110 . . The optical sheet layer 121 may include a prism sheet, a lenticular lens sheet, a micro lens sheet, and the like.

A plurality of light sources 131 and a backlight driving circuit 132 constituting a backlight driving unit ( 130 in FIG. 1 ) may be disposed under the diffusion plate 122 . Light emitting diodes may be used as the plurality of light sources 131 , and each of the plurality of light sources 131 may be arranged at regular intervals. The light source 131 may include a point light source package and a light diffusing lens. The backlight driving circuit 132 may have a shape such as a PCB on which a driving circuit capable of controlling the plurality of light sources 131 is disposed.

The first display panel 100 includes a first guide panel 140 disposed on the outer surface of the first panel layer 110 , a first cover bottom 150 disposed under the first guide panel 140 , and 1 may include a first case top 160 coupled to the guide panel 140 . The first guide panel 140 defines a lower appearance of the first display panel 100 , and the first guide panel 140 defines a side appearance of the first display panel 100 . The first case top 160 is disposed outside the first guide panel 140 and defines a side appearance of the first display panel 100 .

The first cover bottom 150 may include a vertical portion 151 corresponding to a side surface of the first display panel 100 and a horizontal portion 152 corresponding to a lower surface of the first display panel 100 . The backlight driving circuit 132 may be supported by the first cover bottom 150 .

The first guide panel 140 includes a vertical portion 141 corresponding to the side surface of the first display panel 100, a horizontal portion 142 protruding inwardly from the vertical portion 141 by a predetermined length, and a horizontal portion ( It may include an inclined portion 143 extending in an inward direction with an inclination from 142 . The vertical portion 151 of the first cover bottom 150 may extend into a space formed between the vertical portion 451 and the inclined portion 143 of the first guide panel 140 . The vertical portion 151 of the first cover bottom 150 may support the horizontal portion 142 of the first guide panel 140 . The horizontal portion 142 of the first guide panel 140 may vertically support the diffusion plate 122 and the optical sheet layer 121 disposed thereon. The vertical portion 141 of the first guide panel 140 may horizontally support the diffusion plate 122 and the optical sheet layer 121 disposed therein.

The first case top 160 may include a vertical portion 161 and a horizontal portion 162 . The vertical portion 161 of the first case top 160 may be coupled with the vertical portion 141 of the first guide panel 140 . For example, the vertical portion 141 and the vertical portion 161 may be coupled using a bolt method or a taping method. The horizontal portion 162 of the first case top 160 protrudes inward by a predetermined length and may overlap the upper portion of the first panel layer 100 . Since the third display panel 300 is disposed above the horizontal portion 162 of the first case top 160, the third display panel 300 is supported by the horizontal portion 162 of the first case top 160. It can be.

Meanwhile, the vertical length of the first case top 160 may be longer than the vertical length of the second case top 260 . As will be described later, this is to attach the third panel driver 380 that drives the third display panel 300 to the side of the second guide panel 240 .

The first PCB 180 is a PCB on which ICs necessary for driving the first display panel 100 are mounted. For example, an IC mounted on the first PCB 180 may include at least one of the timing controller 181, the gate driver 182, and the data driver 183 described with reference to FIG. 1 . The first PCB 180 may be implemented as a flat PCB or as a flexible PCB. The first PCB 180 may be disposed in a space formed between the first guide panel 140 and the first case top 160 . Specifically, the vertical portion 141 of the first guide panel 140 and the vertical portion 161 of the first case top 160 may be spaced apart by a predetermined interval. The first PCB 180 may be disposed in a space having a predetermined gap between the vertical portion 141 and the vertical portion 161 . The first PCB 180 may be attached to either the vertical portion 141 or the vertical portion 161 .

The first connection line 185 is a component for transferring a control signal from the first PCB 180 to the first panel layer 110 and may be implemented as a flexible cable. One end of the first connection line 185 may be connected to a pad disposed between the upper substrate 112 and the lower substrate 113 . To this end, the upper substrate 112 and the lower substrate 113 may be formed to have different lengths. In FIGS. 3 and 4 , the lower substrate 113 is shown to protrude further outward compared to the upper substrate 112 . When a pad is formed on the exposed surface of the lower substrate 113, one end of the first connection line 185 may contact the pad. A protective layer 117 may be formed on the lower substrate 113 to protect the exposed pad. The other end of the first connection line 185 may be connected to the first PCB 180 . The first connection line 185 may be disposed in a space formed between the first guide panel 140 and the first case top 160 . Specifically, the vertical portion 141 of the first guide panel 140 and the vertical portion 161 of the first case top 160 may be spaced apart by a predetermined interval. The first connection line 185 may be disposed in a space having a predetermined interval between the vertical portion 141 and the vertical portion 161 .

The first power supply unit 190 may be attached to a lower portion of the first cover bottom 150 . The first power supply 190 is a component that supplies power necessary for driving various components of the first display panel 100 . The first power supply 190 may supply power to the first PCB 180 and supply power required for the backlight driving circuit 132 .

Among the second display panel 200 , components having the same names or corresponding reference numerals as those of the first display panel 100 are identical or corresponding components. Hereinafter, redundant descriptions will be omitted.

Referring to FIG. 6 , the second display panel 200 may include a second panel layer 210 . The second panel layer 210 may include a lower substrate 213 , an upper substrate 212 , an upper polarizing film 211 , and a lower polarizing film 214 . The second display panel 200 may be a liquid crystal panel. The upper substrate 212 may include a black matrix 215 formed in a closed loop along an edge on a plane of the second panel layer 210 . Referring to FIG. 6 , the end of the third display panel 300 may protrude more inward (direction C) than the end of the black matrix 215 or may protrude the same way. The inward direction refers to a direction toward the center of the second display panel 200 . For example, it is the C direction shown in FIG. 6 . This is to prevent the black matrix 215 from being exposed when viewing the composite display panel according to the present disclosure from the front. In addition, since the black matrix 215 is covered by the third display panel 300, a screen continuously connected to the first display panel 100, the third display panel 300, and the second display panel 200 is displayed. can do. The black matrix 215 like this defines a bezel formed on the outer edge of a conventional display panel, but according to the present embodiment, the first display panel is formed by the third display panel 300 disposed above the black matrix 215. The bezel at the boundary between 100 and the second display panel 200 may be removed.

The second display panel 200 includes a second guide panel 240 disposed on the outer surface of the second panel layer 210, a second cover bottom 250 disposed under the second guide panel 240, and a second guide panel 240 disposed on the outer surface of the second panel layer 210. 2 may include a second case top 260 coupled with the guide panel 240 . The second cover bottom 250 may include a vertical portion 251 corresponding to a side surface of the second display panel 200 and a horizontal portion 252 corresponding to a lower surface of the second display panel 200 . The second guide panel 240 includes a vertical portion 241 corresponding to the side surface of the second display panel 200, a horizontal portion 242 protruding inwardly from the vertical portion 241 by a predetermined length, and a horizontal portion ( 242 may include an inclined portion 243 extending inwardly with an inclination. The vertical portion 251 of the second cover bottom 250 may extend into a space formed between the vertical portion 241 and the inclined portion 243 of the second guide panel 240 . The vertical portion 251 of the second cover bottom 250 may support the horizontal portion 242 of the second guide panel 240 . The horizontal portion 242 of the second guide panel 240 may vertically support the diffusion plate 222 and the optical sheet layer 221 disposed thereon. The vertical portion 241 of the second guide panel 240 may horizontally support the diffusion plate 222 and the optical sheet layer 221 disposed therein.

The second case top 260 may include a vertical portion 261 and a horizontal portion 262 . The vertical portion 261 of the second case top 260 may be coupled with the vertical portion 241 of the second guide panel 240 . For example, the vertical portion 241 and the vertical portion 261 may be coupled using a bolt method or a taping method. The horizontal portion 262 of the second case top 260 protrudes inward by a predetermined length and may overlap the upper portion of the second panel layer 200 . Since the third display panel 300 is disposed above the horizontal portion 262 of the second case top 260, the third display panel 300 is supported by the horizontal portion 262 of the second case top 260. It can be.

Meanwhile, the vertical length of the second case top 260 may be shorter than the vertical length of the first case top 160 . As will be described later, this is to attach the third panel driver 380 that drives the third display panel 300 to the side of the second guide panel 240 .

Although not shown, a second PCB on which ICs necessary for driving the second display panel 200 are mounted may be disposed at an end (right side) of the second display panel 200 , not shown.

The third display panel 300 may include a third panel layer 310 , a third PCB 380 and a third power supply 390 . The third PCB 380 may have the same configuration as the third panel driver 380 described with reference to FIG. 1 .

Referring to FIG. 5 , the third panel layer 310 includes a substrate 313, an LED layer 312 disposed on the substrate 313 and including a plurality of LEDs, and a cover layer covering the LED layer 312 ( 311) may be included. The substrate 313 is a substrate for supporting a plurality of LEDs, and signal wires connected to each of the plurality of LEDs may be formed. The substrate 313 may be formed of a PCB substrate. The LED layer 312 may include a plurality of LEDs. LEDs may be referred to as mini LEDs or micro LEDs. Each LED may be a light emitting element that emits light having at least one color among Red, Green, and Blue. Each LED may have a size of about 0.2 mm in width, 0.2 mm in length, and 0.2 mm in height, but is not limited thereto. Each of the three LEDs is referred to as a sub-pixel, and a group of three LEDs may be referred to as one pixel. The distance between the pixels may be 0.2 mm, but is not limited thereto. The cover layer 311 is made of a material such as glass, plastic, or transparent rubber to cover the LED layer 312 exposed to the outside. can be implemented

The third PCB 380 may include an IC chip as a driving circuit for controlling the LEDs of the third panel layer 310 . The third PCB 380 may be implemented as a PCB substrate or as a flexible PCB. A signal for controlling on/off of each LED from the third PCB 380 may be output to the third panel layer 310 . The third PCB 380 may be disposed under the second case top 260 . In addition, the third PCB 380 may be disposed on the side of the second guide panel 240 . Also, the third PCB 380 may be attached to the side of the second guide panel 240 .

A third connection line 385 may be connected to connect the third PCB 380 and the third display panel 300 . One end of the third connection line 385 may be connected to the board 313 and the other end of the third connection line 385 may be connected to the third PCB 380 . The third connection line 385 may be disposed between the first case top 160 and the second case top 260 . To this end, the first case top 160 and the second case top 260 may be spaced apart at a predetermined interval. Also, in order for the third connection line 385 to be connected to the third PCB 380, the length of the second case top 260 in the vertical direction must be shorter than the length of the first case top 160 in the vertical direction. can That is, the vertical length of the vertical portion 261 of the second case top 260 may be shorter than the vertical length of the vertical portion 161 of the first case top 160 .

The third power supply unit 390 supplies power necessary for driving the third PCB 380 . The third power supply 390 may be attached to the lower portion of the second cover bottom 250 . The third power supply unit 390 may be in the form of a power supply module mounted on a PCB. The third power supply 390 may supply power to the third PCB 380 through the third power supply line 391 .

FIG. 7 is a cross-sectional view of a composite display panel according to another exemplary embodiment of the present disclosure taken along line AA′ of FIG. 2 .

FIG. 8 is an enlarged cross-sectional view of the first display panel in the cross-sectional view of FIG. 7 .

FIG. 9 is an enlarged cross-sectional view of the second display panel in the cross-sectional view of FIG. 7 .

A composite display panel according to another exemplary embodiment of the present disclosure will be described with reference to FIGS. 7 to 9 .

Prior to describing this embodiment, elements having the same names or corresponding reference numerals as those of the embodiment described with reference to FIGS. 3 to 6 are the same or corresponding elements. Hereinafter, redundant descriptions will be omitted.

Also, in this embodiment, compared to the embodiment described with reference to FIGS. 3 to 6 , the third display panel 300 is positioned inside the first display panel 100 . In addition, a fourth display panel 400 positioned inside the second display panel 200 is additionally presented.

The first display panel 100 may include the first panel layer 110 . The first panel layer 110 may include a lower substrate 113 , an upper substrate 112 , an upper polarizing film 111 , and a lower polarizing film 114 . The first display panel 100 may be a liquid crystal display panel.

According to this embodiment, the upper substrate 112 may include the transparent resin 116 formed in a closed loop along the edge on the plane of the first panel layer 110 . Compared to the black matrix 115 in the above-described embodiment, the transparent resin 116 may be implemented with a transparent material. In this embodiment, since the third display panel 300 is disposed below the first panel layer 110, the transparent resin 116 is used so that the third display panel 300 can be viewed from the outside. The transparent resin 116 may be formed on a surface where the upper substrate 112 and the lower substrate 113 contact each other. The transparent resin 116 may overlap the third display panel 300 . The transparent resin 116 may be formed to a predetermined length in an inward direction. An end of the transparent resin 116 may be formed shorter in an inward direction than an end of the third display panel 300 or may be formed the same. For example, referring to FIG. 8 , the end of the third display panel 300 protrudes more inward (direction B) than the end of the transparent resin 116 based on the virtual line VL in the vertical direction. It can protrude in the same way. This is to provide a seamless screen when viewing the composite display panel according to the present disclosure from the front. According to the present embodiment, a screen can be displayed even at the boundary between the first display panel 100 and the second display panel 200 by the third display panel 300 disposed below the transparent resin 116 .

The first display panel 100 includes a first guide panel 140 disposed on the outer surface of the first panel layer 110, a first cover bottom 150 disposed under the first guide panel 140, and 1 may include a first case top 160 coupled to the guide panel 140 . The first cover bottom 150 may include a vertical portion 151 corresponding to a side surface of the first display panel 100 and a horizontal portion 152 corresponding to a lower surface of the first display panel. The first guide panel 140 includes a vertical portion 141 corresponding to the side surface of the first display panel 100, a horizontal portion 142 protruding inwardly from the vertical portion 141 by a predetermined length, and a horizontal portion ( It may include an inclined portion 143 extending in an inward direction with an inclination from 142 . The vertical portion 151 of the first cover bottom 150 may extend into a space formed between the vertical portion 141 and the inclined portion 143 of the first guide panel 140 . The vertical portion 151 of the first cover bottom 150 may support the horizontal portion 142 of the first guide panel 140 . The horizontal portion 142 of the first guide panel 140 may vertically support the diffusion plate 122 and the optical sheet layer 121 disposed thereon. The vertical portion 141 of the first guide panel 140 may horizontally support the diffusion plate 122 and the optical sheet layer 121 disposed therein. The vertical portion 141 of the first guide panel 140 may vertically support the third display panel 300 disposed thereon.

The first case top 160 may include a vertical portion 161 and a protruding portion 163 . The vertical portion 161 of the first case top 160 may be coupled with the vertical portion 141 of the first guide panel 140 . For example, the vertical portion 141 and the vertical portion 161 may be coupled using a bolt method or a taping method. The protrusion 163 of the first case top 160 may include an inclined surface formed to be inclined inward. By forming the inclined plane, the first connection line 185, which may be a flexible line, can extend downward without stress. The vertical portion 161 of the first case top 160 may support the third display panel 300 . Also, the vertical portion 161 of the first case top 160 may accommodate the first connection line 185 connected to the first panel layer 110 . Also, the protrusion 163 of the first case top 160 may support the third display panel 300 in a horizontal direction.

According to this embodiment, the first integrated PCB 195 may be a PCB in which a first panel driver driving the first display panel 100 and a third panel driver driving the third display panel 300 are integrated. . The first panel driver may include, for example, at least one of the timing controller 181 , the gate driver 182 , and the data driver 183 described with reference to FIG. 1 . The third panel driving unit may be, for example, the third panel driving unit 380 described with reference to FIG. 1 . In addition, a power supply unit for supplying power necessary for driving the first display panel 100 and the third display panel 300 may be disposed on the first integrated PCB 195 . For example, the power supply unit may include the first power supply unit 190 , the backlight driver 130 , and the third power supply unit 390 described with reference to FIG. 1 . Such a first integrated PCB 195 may be implemented as a flat PCB. The first integrated PCB 195 as described above may be disposed under the first cover bottom 150 . That is, the first integrated PCB 195 may be attached to the lower portion of the horizontal portion 152 of the first cover bottom 150 .

The first guide panel 140 and the first case top 160 may be spaced apart from each other at a predetermined interval. A first connection line 185 and a third connection line 385 may be disposed between the first guide panel 140 and the first case top 160 .

The first connection line 185 is a line connecting the first integrated PCB 195 and the first panel layer 110 and may be a flexible cable. One ends of the first connection line 185 may be side bonded to the sides of the upper substrate 112 and the lower substrate 113 . In this case, the upper substrate 112 and the lower substrate 113 may have the same length as each other. The other end of the first connection line 185 may be connected to the first integrated PCB 195 .

The third connection line 385 is a line connecting the first integrated PCB 195 and the third display panel 300 and may be a flexible cable. One end of the third connection line 385 may be connected to the rear surface of the substrate 313 . The other end of the third connection line 385 may be connected to the first integrated PCB 195 .

The third display panel 300 may include the third panel layer 310 . The third panel layer 310 may include a substrate 313 and an LED layer 312 disposed on the substrate 313 and including a plurality of LEDs. According to this embodiment, since the third display panel 300 is disposed inside the first display panel 100, the cover layer 311 in the above-described embodiment may be omitted. A driving circuit for driving the third display panel 300 may be integrated into the first integrated PCB 195 . A power supply unit supplying power required to drive the third display panel 300 may be integrated into the first integrated PCB 195 .

Prior to describing the second display panel 200 and the fourth display panel 400, components having the same names or corresponding reference numerals as those described above are identical or corresponding components. Hereinafter, redundant descriptions will be omitted.

The second display panel 200 may include the second panel layer 210 . The second panel layer 210 may include a lower substrate 213 , an upper substrate 212 , an upper polarizing film 211 , and a lower polarizing film 214 . The second display panel 200 may be a liquid crystal display panel.

According to this embodiment, the upper substrate 212 may include the transparent resin 216 formed in a closed loop along the edge on the plane of the second panel layer 210 . Compared to the black matrix 115 in the above-described embodiment, the transparent resin 216 may be implemented with a transparent material. The transparent resin 216 may overlap the fourth display panel 400 . The transparent resin 216 may be formed to a predetermined length in an inward direction. An end of the transparent resin 216 may be formed shorter in an inward direction than an end of the fourth display panel 400 or may be formed the same. For example, referring to FIG. 9 , the end of the fourth display panel 400 protrudes more inward (direction C) than the end of the transparent resin 216 based on the virtual line VL in the vertical direction. It can protrude in the same way. This is to provide a seamless screen when viewing the composite display panel according to the present disclosure from the front. According to this embodiment, a screen can be displayed even at the boundary between the first display panel 100 and the second display panel 200 by the fourth display panel 400 disposed below the transparent resin 216 .

The second display panel 200 includes a second guide panel 240 disposed on the outer surface of the second panel layer 210, a second cover bottom 250 disposed under the second guide panel 240, and a second guide panel 240 disposed on the outer surface of the second panel layer 210. 2 may include a second case top 260 coupled with the guide panel 240 . The second cover bottom 250 may include a vertical portion 251 corresponding to a side surface of the second display panel 200 and a horizontal portion 252 corresponding to a lower surface of the second display panel 200 . The second guide panel 240 includes a vertical portion 241 corresponding to the side surface of the second display panel 200, a horizontal portion 242 protruding inward from the vertical portion 241 by a predetermined length, and a horizontal portion ( 242 may include an inclined portion 243 extending inwardly with an inclination. The vertical portion 251 of the second cover bottom 250 may extend into a space formed between the vertical portion 241 and the inclined portion 243 of the second guide panel 240 . The vertical portion 251 of the second cover bottom 250 may support the horizontal portion 242 of the second guide panel 240 . The horizontal portion 242 of the second guide panel 240 may vertically support the diffusion plate 222 and the optical sheet layer 221 disposed thereon. The vertical portion 241 of the second guide panel 240 may horizontally support the diffusion plate 222 and the optical sheet layer 221 disposed therein. The vertical portion 241 of the second guide panel 240 may vertically support the fourth display panel 400 disposed thereon.

The second case top 260 may include a vertical portion 261 and a protruding portion 263 . The vertical portion 261 of the second case top 260 may be coupled with the vertical portion 241 of the second guide panel 240 . For example, the vertical portion 241 and the vertical portion 261 may be coupled using a bolt method or a taping method. The protrusion 263 of the second case top 260 may include an inclined surface formed to be inclined inward. By forming the inclined plane, the second connection line 285, which may be a flexible line, can extend downward without stress. The vertical portion 161 of the second case top 160 may support the third display panel 300 . Also, the vertical portion 261 of the first case top 260 may accommodate the second connection line 285 connected to the second panel layer 210 . Also, the protrusion 263 of the second case top 260 may support the fourth display panel 400 in a horizontal direction.

According to this embodiment, the second integrated PCB 295 may be a PCB in which the second panel driver driving the second display panel 200 and the fourth panel driver driving the fourth display panel 400 are integrated. . The second panel driver may include, for example, at least one of the timing controller 281 , the gate driver 282 , and the data driver 283 described with reference to FIG. 1 . For example, the fourth panel driving unit may be a circuit that controls the LEDs of the fourth panel layer 410 as a component corresponding to the third panel driving unit 380 described with reference to FIG. 1 . In addition, a power supply unit for supplying power necessary for driving the second display panel 200 and the fourth display panel 400 may be disposed on the second integrated PCB 295 . For example, the power supply unit may include the second power supply unit 290 and the backlight driver 230 described with reference to FIG. 1 , and may also include a fourth power supply unit. The fourth power supply unit corresponds to the third power supply unit 390 described with reference to FIG. 1 and may supply power necessary for driving the fourth panel driving unit. Such a first integrated PCB 195 may be implemented as a flat PCB. The second integrated PCB 295 as described above may be disposed under the second cover bottom 250 . That is, the second integrated PCB 295 may be attached to the lower portion of the horizontal portion 252 of the second cover bottom 250 .

The second guide panel 240 and the second case top 260 may be spaced apart from each other at a predetermined interval. A second connection line 285 and a fourth connection line 485 may be disposed between the second guide panel 240 and the second case top 260 .

The second connection line 285 is a line connecting the second integrated PCB 295 and the second panel layer 210 and may be a flexible cable. One ends of the second connection line 285 may be side bonded to the sides of the upper substrate 212 and the lower substrate 213 . In this case, the upper substrate 212 and the lower substrate 213 may have the same length. The other end of the second connection line 285 may be connected to the second integrated PCB 295 .

The fourth connection line 485 is a line connecting the second integrated PCB 295 and the fourth display panel 400 and may be a flexible cable. One end of the fourth connection line 485 may be connected to the rear surface of the substrate 413 . The other end of the fourth connection line 485 may be connected to the second integrated PCB 295 .

The fourth display panel 400 may include a fourth panel layer 410 . The fourth panel layer 410 may include a substrate 413 and an LED layer 412 disposed on the substrate 413 and including a plurality of LEDs. According to this embodiment, since the fourth display panel 400 is disposed inside the second display panel 200, the cover layer may be omitted. A driving circuit for driving the fourth display panel 400 may be integrated into the second integrated PCB 295 . A power supply unit supplying power required to drive the fourth display panel 400 may be integrated into the first integrated PCB 195 .

Those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. should be interpreted

100: first display panel
110: first panel layer (111: upper polarizing film, 112: upper substrate, 113: lower substrate, 114: lower polarizing film, 115: black matrix, 116: transparent resin, 117: protective layer)
121: optical sheet layer
122: diffusion plate
130: backlight driving unit (132: backlight driving circuit, 131: light source)
140: first guide panel (141: vertical portion, 142: horizontal portion, 143: inclined portion)
150: first cover bottom (151: vertical part, 152: horizontal part)
160: first case top (161: vertical part, 162: horizontal part, 163: protrusion part)
180: first PCB (181: timing controller, 182: gate driver, 183: data driver, 185: first connection line)
190: first power supply unit
195: first integrated PCB
200: second display panel
210: second panel layer (211: upper polarizing film, 212: upper substrate, 213: lower substrate, 214: lower polarizing film, 215: black matrix, 216: transparent resin)
221: optical sheet layer
222: diffusion plate
230: backlight driving unit (232: backlight driving circuit, 231: light source)
240: second guide panel (241: vertical portion, 242: horizontal portion, 243: inclined portion)
250: second cover bottom (251: vertical part, 252: horizontal part)
260: second case top (261: vertical portion, 262: horizontal portion, 263: protruding portion)
281: timing controller, 282: gate driver, 283: data driver
285: second connection line)
295: second integrated PCB
300: third display panel
310: third panel layer (311: cover layer, 312: LED layer, 313: substrate)
380: third panel driver, third PCB
385: third connection line
390: third power supply
391 third power supply line
400: fourth display panel
410: 4th panel layer (412: LED layer, 413: substrate)
485: fourth connection line

Claims (18)

a first display panel including a first panel layer, a first guide panel disposed on an outer surface of the first panel layer, and a first case top coupled to the first guide panel;
a second display panel including a second panel layer, a second case top disposed on an outer surface of the second panel layer, and a second guide panel coupled to the second case top; and
a third display panel disposed on a boundary between the first display panel and the second display panel and including an LED;
composite display panel.
According to claim 1,
The third display panel is disposed above the top of the first case and the top of the second case.
composite display panel.
According to claim 2,
The first panel layer includes a black matrix formed on an edge,
The end of the third display panel protrudes more inward than or equally protrudes than the end of the black matrix.
composite display panel.
According to claim 2,
The third display panel includes a third PCB, and the third PCB is disposed under the top of the second case and disposed on a side surface of the second guide panel.
composite display panel.
According to claim 4,
a third connection line connecting the third PCB and the third display panel, wherein the third connection line is disposed between the top of the first case and the top of the second case;
composite display panel.
According to claim 5,
The vertical length of the second case top is shorter than the vertical length of the first case top,
composite display panel.
According to claim 4,
Further comprising a third power supply for supplying power to the third PCB and disposed below the bottom of the second cover,
composite display panel.
According to claim 2,
The first display panel further comprises a first PCB disposed between the first case top and the first guide panel.
composite display panel.
According to claim 1,
The third display panel is disposed inside the top of the first case,
The composite display panel further includes a fourth display panel disposed inside the top of the second case and including LEDs.
composite display panel.
According to claim 9,
The first panel layer and the second panel layer include a transparent resin formed on an edge,
the third display panel and the fourth display panel overlap the transparent resin;
composite display panel.
According to claim 10,
an end of the third display panel protrudes more inward than or equally protrudes from an end of the transparent resin;
The end of the fourth display panel protrudes more inward than or equally protrudes than the end of the transparent resin.
composite display panel.
According to claim 9,
The third display panel is supported on the first guide panel and
The fourth display panel is supported on top of the second guide panel.
composite display panel.
According to claim 9,
Each of the first case top and the second case top includes a vertical portion coupled to the guide panel and a protrusion protruding upward from the vertical portion,
composite display panel.
According to claim 13,
The protrusion comprises an inclined surface,
composite display panel.
According to claim 9,
a first integrated PCB in which a first panel driver driving the first display panel and a third panel driver driving the third display panel are integrated;
The first integrated PCB is disposed under the first cover bottom,
composite display panel.
According to claim 15,
a first connection line connecting the first display panel and the first integrated PCB, the first connection line being disposed between the first case top and the first guide panel;
a third connection line connecting the third display panel and the first integrated PCB, wherein the third connection line is disposed between the first case top and the first guide panel;
composite display panel.

According to claim 9,
a second integrated PCB in which a second panel driver driving the second display panel and a fourth panel driver driving the fourth display panel are integrated;
The second integrated PCB is disposed under the second cover bottom,
composite display panel.
18. The method of claim 17,
a second connection line connecting the second display panel and the second integrated PCB, the second connection line being disposed between the second case top and the second guide panel;
A fourth connection line connecting the fourth display panel and the second integrated PCB, wherein the fourth connection line is disposed between the second case top and the second guide panel.
composite display panel.

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