KR20070081563A - Display apparatus - Google Patents

Abstract

A display device is provided to reduce a volume occupied by a flexible circuit board in a display device and reduce a size of the display device by allowing a cover portion extending from a receiving container to receive a flexible circuit board in a bent state. A display panel assembly includes a display panel(1300) including a driving IC(Integrated Circuit)(1600) processing a driving signal for displaying an image, a printed circuit board(1200b) generating the driving signal, and a flexible circuit board(1200a) including a line sending the driving signal generated from the printed circuit board to a driving IC. A receiving space(1100) includes a bottom surface(1140), and a side surface(1150) extending from the bottom surface. The side surface includes an opening for insertion of a part of the flexible circuit board and a cover portion(1120) for covering the flexible circuit board.

Description

Display device {DISPLAY APPARATUS}

1 is an exploded perspective view illustrating a display device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II ′ of FIG. 1.

3 is a cross-sectional view illustrating a display device according to a second exemplary embodiment of the present invention.

4 is a cross-sectional view illustrating a display device according to a third exemplary embodiment of the present invention.

5 is a cross-sectional view illustrating a display device according to a fourth exemplary embodiment of the present invention.

FIG. 6 is an enlarged view of a portion A of FIG. 5.

FIG. 7 is an enlarged view illustrating another embodiment of portion A of FIG. 5.

8A through 8C are exemplary embodiments of part B of FIG. 7.

<Explanation of symbols for main parts of the drawings>

1100: storage container 1110: support

1120: cover portion 1130: opening

1200: circuit board 1200a: flexible circuit board

1200b: printed circuit board 1300: display panel assembly

1400: optical sheet 1500: lamp assembly

1600: drive circuit

The present invention relates to a display device. More specifically, the present invention relates to a display device that can further reduce the size.

In general, various electronic devices such as mobile communication terminals, digital cameras, laptops, and monitors include a display device for displaying an image of data including an electrical signal format. Recently, a liquid crystal display device (LCD) having advantages of thin thickness and light weight has been widely used.

Conventional liquid crystal display devices have a display panel for displaying an image according to a driving signal for controlling an image, a driving circuit unit for providing a driving signal to the display panel, and a flexible circuit board electrically connecting the display panel and the driving circuit unit. And a storage container accommodating a printed circuit) and a display panel.

A method of connecting the liquid crystal display panel and the driving circuit unit is classified into a tape automated bonding (TAB) method and a chip on glass (COG) method. In the TAB method, pads formed on the liquid crystal display panel and bumpers of a driving chip on which the driving circuit unit is mounted are connected to both ends of an adhesive lead such as a film. The COG method is a method of directly bonding the driving chip to the substrate. In the past, a lot of TAB methods have been used, which are easy to contact and easy to improve, but according to the development of the micro-mounting technology, the COG method which is easy to miniaturize and has low manufacturing cost is mainly used.

In this case, the length of the flexible circuit board determines the length of the display device. Since the length of the flexible circuit board is constant, there is a limit to reducing the length of the display device.

Accordingly, the technical problem of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a display device capable of reducing the size of the flexible circuit board by reducing its space.

The display device for achieving the object of the present invention includes a display panel assembly and a storage container. The display panel assembly may include a display panel equipped with a driving IC for processing a driving signal for displaying an image, a printed circuit board generating the driving signal, and a wiring for transmitting the driving signal generated from the printed circuit board to the driving IC. It includes a flexible printed circuit board formed. The storage container includes a bottom surface, a side surface extending from the bottom surface and having an opening for inserting a portion of the flexible circuit board and a cover portion for covering the flexible circuit board.

The flexible circuit board further includes at least one fastening groove, and the storage container further includes at least one fastening portion coupled to the fastening groove. The fastening part coupled to the flexible circuit board further includes a departure preventing part for preventing the flexible circuit board from being separated. The departure prevention part may be a departure prevention groove, an inclined surface or a departure prevention protrusion. The fastening groove and the fastening part may be fastened with a screw.

A support portion for supporting the flexible printed circuit board is formed under the opening of the storage container, and the cover portion is positioned above the opening. The cover part extends in a direction perpendicular to the second part from a first part protruding in a direction perpendicular to the side surface, a second part extending in a direction perpendicular to the first part from the first part, and a second part from the second part. It includes a third part.

The side of the receiving container may further include a support for supporting the flexible circuit board. The length of the support is less than or equal to the length of the protruding first part.

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

1 is an exploded perspective view illustrating a display device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II ′ of FIG. 1.

1 and 2, the display device 1000 according to the present exemplary embodiment includes the display panel assemblies 1200, 1300, and 1600, the storage container 1100, and the backlight assembly 1500.

The display panel assembly (1200, 1300, 1600) includes a display panel (1300) for displaying an image and a printed circuit board (PCB) 1200b for generating a driving signal for displaying an image. And a flexible printed circuit (FPC) 1200a electrically connecting the display panel 1300 and the printed circuit board 1200b.

The display panel 1300 includes a thin film transistor substrate (TFT substrate) 1300a, a color filter substrate 1300c, and a liquid crystal layer 1300b.

At the edge of the TFT substrate 1300a according to the present exemplary embodiment, a driving IC 1600 for controlling a TFT by receiving a driving signal from the printed circuit board 1200b is disposed, and the driving IC 1600 stores data of the TFT substrate 1300a. The data driver IC 1600a is connected to the signal lines and the gate driver IC 1600b is connected to the gate signal lines of the TFT substrate 1300a. Alternatively, the gate driving IC 1600b according to the present exemplary embodiment may be a circuit pattern formed on the TFT substrate 1300a.

The data driving IC 1600a and the printed circuit board 1200b are electrically connected to each other by the flexible circuit board 1200a, and the driving signal generated from the printed circuit board 1200b is connected to the flexible circuit board 1200a and the data driving IC ( It is applied to each data signal line through 1600a).

The flexible circuit board 1200a electrically connecting the data driving IC 1600a and the printed circuit board 1200b of the display panel 1300 transmits a driving signal generated from the printed circuit board 1200b to the data driving IC 1600a. And wirings, and at least one through hole 1130 is formed on the flexible circuit board 1200a. For example, the through hole 1130 according to the present embodiment may be formed at an edge of the flexible circuit board 1200a not connected to the printed circuit board 1200b.

The backlight assemblies 1400 and 1500 according to the present exemplary embodiment include a lamp 1530, a light guide plate 1510, a reflector plate 1520, and an optical member 1400. The optical member 1400 includes a diffusion sheet 1400b for diffusing light to improve luminance uniformity and at least one prism sheet 1400a for condensing light diffused from the diffusion sheet 1400b to improve the front viewing angle and the brightness of the light. ).

The display device according to the present exemplary embodiment may further include a top chassis 1800.

The storage container 1100 housing the display panel assemblies 1200, 1300, and 1600 includes a bottom surface 1140 and a side surface 1150 extending or disposed from the bottom surface 1140 to form a storage space.

The side surface 1150 may include an opening 1130 into which the flexible circuit board 1200a is inserted, a support part 1110 supporting the flexible circuit board 1200a, and a cover part 1120 covering the flexible circuit board 1200a. ). The support part 1110 is disposed below the opening 1130 to support the flexible circuit board 1200a which is protruded through the opening 1130.

The cover part 1120 extends outward from the side surface 1150 of the storage container 1100. The cover part 1120 may include a first part 1123 extending substantially perpendicular to the side surface 1150, a second part 1122 and a second part extending substantially perpendicular to the first part 1123. A third portion 1121 substantially perpendicular to 1122.

The cover part 1120 also serves to protect the flexible circuit board 1200a. The flexible circuit board 1200a is disposed along the cover part 1120 to the outside of the storage container 1100. The cover 1120 is bent by the second part 1122 and disposed in the direction of the storage container 1100 and inserted into the opening 1130 of the side surface 1150.

Coupling protrusions may be formed on the side surface 1150 of the cover 1110 or the storage container 1100. The coupling protrusion (not shown) is formed at a position corresponding to the through hole 1130 formed in the flexible circuit board 1200a, and the coupling protrusion (not shown) of the through hole 1130 and the storage container 1100 are coupled to each other. . Coupling protrusion 330 according to the present embodiment may have a rod shape, for example. Coupling protrusions (not shown) will be described later.

The coupling protrusion 330 according to the present exemplary embodiment preferably has a height sufficient to prevent the through hole 1130 of the flexible circuit board 1200a from being separated from the coupling protrusion 330.

Referring to FIG. 2, an arrangement of the lamp assembly 1500, the display panel assembly 1300, and the flexible circuit board 1200a may be known.

3 is a cross-sectional view illustrating a display device according to a second exemplary embodiment of the present invention. The same components as those in Figs. 1 and 2 are given the same reference numerals, and detailed description thereof will be omitted.

Referring to FIG. 3, the side surface of the storage container 1100 of the display device 1000 includes a separate support part 1160 supporting the flexible circuit board 1200. The support part 1160 is disposed at the side surface in an L shape. The support part 1160 supports the flexible circuit board 1200.

4 is a cross-sectional view illustrating a display device according to a third exemplary embodiment of the present invention. Detailed description of the same components as those in FIGS. 1 and 2 will be omitted.

Referring to FIG. 4, the display device 3000 uses an LED 3530 as a light source. Therefore, the LED 3530 further includes a flexible circuit board 3540 for connecting the light guide plate 3510 and applying a signal to the LED.

5 is a cross-sectional view illustrating a display device according to a fourth exemplary embodiment of the present invention. The same components as those in FIG. 4 are given the same reference numerals, and detailed description thereof will be omitted.

Referring to FIG. 5, the side surface of the storage container 3100 of the display device 3000 includes a separate support part 3160 supporting the flexible circuit board 3200. The support part 3160 is disposed at the side surface in an L shape. The support part 3160 supports the flexible circuit board 3200.

FIG. 6 is an enlarged view of a portion A of FIG. 5.

Referring to FIG. 6, the cover part 120 may include a first part 123 extending substantially perpendicular to the side surface 132, and a second part extending substantially perpendicular to the first part 123. 122 and a third portion 121 substantially perpendicular to the second portion 122. The second part 122 includes a fastening part 124.

The fastening part 124 may be disposed in the first part 123 or the third part 121. The fastening part 124 is coupled to the through hole of the flexible circuit board 200 to fix the flexible circuit board 200 to the cover part 120. The fastening part 124 has a variety of shapes. As an example, the fastening part 124 shown in FIG. 6 is a coupling protrusion and preferably has a height higher than the thickness of the flexible circuit board 200.

FIG. 7 is an enlarged view illustrating another embodiment of portion A of FIG. 5. Only the same reference numerals are given to the same components as in Fig. 6, and only the other parts will be described.

Referring to FIG. 7, the support part 131 extends to the same length as the length of the first part 123 of the cover part 120 to better support the flexible circuit board 200. By arranging the flexible circuit board 200 between the support part 131 and the first part 123 of the cover part 120, the flexible circuit board 200 may be protected.

The fastening portion 124 has a curved groove on the side, rather than simply a projection. The grooves of the curved surface prevent the flexible circuit board 200 from being separated. The support part 131 may be disposed on a side surface of the storage container. The support part 131 may be disposed to extend from a bottom surface of the storage container. The support part 135 is provided with a fastening part 135. Unlike the drawing, the fastening part may be formed in the first to third parts of the cover part 120.

8A through 8C are exemplary embodiments of part B of FIG. 7.

Referring to FIG. 8A, the fastening part 124 has an inclined surface. In more detail, the fastening part 124 has an inclined surface so that the cross-sectional area becomes wider as the height thereof rises. Therefore, the separation of the flexible circuit board 200 is prevented.

Referring to FIG. 8B, the fastening part 124 has a protrusion protruding from the coupling protrusion 124 in a direction perpendicular to the side surface of the coupling protrusion 124.

Referring to FIG. 8C, the fastening part 124 is a screw.

As described in detail above, the cover portion extended from the storage container bends and accommodates the flexible circuit board, thereby reducing the volume of the flexible circuit board in the display device, and as a result, the size of the display device is further reduced.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (16)

A flexible printed circuit board having a display panel equipped with a driving IC for processing a driving signal for displaying an image, a printed circuit board generating the driving signal, and a wiring for transmitting the driving signal generated from the printed circuit board to a driving IC; A display panel assembly comprising; And And a storage container including a bottom surface, an accommodation container extending from the bottom surface and having an opening for inserting a part of the flexible circuit board and a side surface having a cover portion for covering the flexible circuit board. The display device of claim 1, wherein the flexible circuit board further comprises at least one fastening groove, and the storage container further comprises at least one fastening portion coupled to the fastening groove. The display device of claim 2, wherein the fastening part coupled to the flexible circuit board further comprises a departure preventing part for preventing the flexible circuit board from being separated. The display device of claim 3, wherein the separation preventing part is a separation preventing protrusion formed on the fastening part. The display device of claim 3, wherein the separation prevention part is a separation prevention groove formed in the fastening part. The display device of claim 3, wherein the separation preventing part is an inclined surface formed on a side of the fastening part. The display device of claim 2, wherein the fastening groove and the fastening portion are fastened by screws. The display device of claim 7, wherein the screw is formed of a non-conductor. The display device of claim 2, wherein a support part supporting the flexible printed circuit board is formed under an opening of the storage container. The display device of claim 8, wherein the cover part is positioned above the opening. The method of claim 9, wherein the cover portion is a first portion protruding in a direction perpendicular to the side, a second portion extending in a direction perpendicular to the first portion from the first portion and from the second portion to the second portion And a third portion extending in the vertical direction. The display device of claim 11, wherein the cover part further comprises a fastening part for fixing the flexible printed circuit board. The display device of claim 1, wherein the side surface further comprises a support part supporting the flexible circuit board. The method of claim 13, wherein the support portion is disposed below the opening, protruding with a first length in a direction perpendicular to the side surface, the side portion is a first portion protruding in a direction perpendicular to the side surface, the first And a cover portion including a second portion extending from the portion to a direction perpendicular to the first portion and a third portion extending from the second portion to a direction perpendicular to the second portion. The display device of claim 14, wherein the first length is shorter than the protruding length of the one portion. The display device of claim 14, wherein the first length is equal to the protruding length of the one portion.

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