KR100786472B1 - Flat display device and the manufacturing method of the same - Google Patents

Abstract

The present invention relates to a flat panel display and a manufacturing method thereof. According to an aspect of the present invention, there is provided a flat panel display including at least one display panel and a chassis accommodating at least one printed circuit board that transmits a signal of an external driving circuit to the display panel. It characterized in that it comprises a guide rail for mounting by sliding.

Flat Panel Display, LCD, Organic Light Emitting, Chassis, Tape

Description

Flat display device and the manufacturing method of the same

1 is an exploded perspective view showing a flat panel display device according to an embodiment of the present invention.

FIG. 2 is a perspective view of an embodiment of the chassis shown in FIG. 1. FIG.

3 is a cross-sectional view taken along the line II 'of FIG.

4A and 4B are flowcharts illustrating a procedure of mounting a display panel on a chassis according to an exemplary embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

4: first display panel

4a, 4b: substrate 6, 34: integrated circuit

8: protective layer 10: optical sheet

12 light emitting diode 14 light emitting diode substrate

16: mold frame 18: light guide plate

20: reflector 22: chassis

24: first printed circuit board 26: second printed circuit board

32: flexible printed circuit board 28: connector

30: second display panel 36, 38: pad portion

50: backlight assembly 60: flat panel display

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel display device and a method of manufacturing the same, and more particularly, to a flat panel display device in which a flat panel display panel is mounted without a tape on a chassis for housing the flat panel display panel and a method for manufacturing the same.

Recently, various flat panel displays have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes. The flat panel display includes a liquid crystal display, a field emission display, a plasma display panel, and an organic light emitting display.

Here, the liquid crystal display and the light emitting display have been attracting attention as an alternative means to overcome the disadvantages of the conventional cathode ray tube because of the advantages of miniaturization, light weight and low power, and now mobile phones and PDA (Portable digital assistor) In addition to portable devices, such as a monitor and a TV, which is a medium-large product, in particular, most portable devices such as mobile phones or PDAs are currently employing almost all flat panel display devices such as liquid crystal displays or light emitting displays. to be.

However, in the conventional flat panel display apparatuses, according to the trend toward miniaturization and slimming of portable devices, the overall flat panel display apparatus has been slimmed down by reducing the overall thickness of the display apparatus and eliminating unnecessary protection elements. .

In particular, a plurality of tapes are inserted into a conventional flat panel display for coupling various components and blocking UV. Such a tape not only increases the manufacturing cost, but also prevents the slimming of the flat panel display as mentioned above. To be an element.

In addition, a flat panel display device having a plurality of tapes inserted therein may not only hinder slimming, but also weaken the rigidity of the flat panel display device, causing frequent failures and breakages.

Accordingly, there is a need to find a structural plan to improve the rigidity while removing the plurality of tapes provided in the flat panel display device, thereby realizing the slimming of the flat panel display device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flat panel display device and a method for manufacturing the flat panel display panel for coupling a flat panel display panel to a chassis for accommodating the flat panel display panel.

The present invention provides a display device comprising: a first display panel configured to display a screen on a front surface thereof; A second display panel displaying a screen on a rear surface facing the front surface; At least one printed circuit board transmitting a signal of an external driving circuit to the first display panel and the second display panel; A chassis accommodating the first display panel, the second display panel and the printed circuit board; And a guide rail disposed at a rear surface of the chassis and configured to slide and mount the second display panel.

The present invention also provides a display device comprising: a first display panel displaying a screen on a front surface; a second display panel displaying a screen on a rear surface facing the front surface; and a driving circuit external to the first display panel and the second display panel. A method of manufacturing a flat panel display device including at least one printed circuit board for transmitting a signal of a chassis, and a chassis accommodating the first display panel, the second display panel, and the printed circuit board. Preparing a; Accommodating the first display panel on a front surface of the chassis; And sliding the second display panel to the rear surface of the chassis through the guide rails to mount the second display panel.

1 is an exploded perspective view illustrating a flat panel display device according to an exemplary embodiment of the present invention. In the present embodiment, the flat panel display device will be described as a dual type display device in which the display panel is provided on both sides.

Accordingly, the flat panel display 60 according to the exemplary embodiment of the present invention may include a first display panel 4, a backlight assembly 50, a chassis 22, and a bezel 22. A first printed circuit board 24, a second printed circuit board 26, and a second display panel 30 are included.

Here, the first display panel 4 displays a predetermined image. In the present embodiment, the first display panel is configured of a liquid crystal display panel.

The first display panel 4 includes a first substrate 4a, a second substrate 4b, and a liquid crystal (not shown) injected therebetween, and the second substrate 4b has a matrix form. And a plurality of thin film transistors (hereinafter referred to as "TFTs").

However, the source electrode of the TFT is connected to the data line, the gate electrode is connected to the scan line, and the drain electrode of the TFT is connected to the pixel electrode made of transparent indium tin oxide (ITO). Such a TFT is turned on when the scan signal is supplied to the scan line to supply the data signal supplied from the data line to the pixel electrode.

To this end, an integrated circuit 6 is mounted on one side of the second substrate 4b, and a data signal and a scan signal are supplied from the integrated circuit 6.

In addition, the first substrate 4a is disposed to face the second substrate 4b. A common electrode made of ITO is coated on the entire surface of the first substrate 4a. A predetermined voltage is applied to the common electrode, thereby forming a predetermined electric field between the common electrode and the pixel electrode. By such an electric field, the arrangement angle of the liquid crystal injected between the first substrate 4a and the second substrate 4b is changed, and the light transmittance is changed according to the changed arrangement angle to display a desired image.

However, since the first display panel 4 is a liquid crystal display panel, a backlight assembly 50 that irradiates light under the panel to display an image is included.

The backlight assembly 50 includes a mold frame 16, light emitting diodes 12, a light emitting diode substrate 14, a light guide plate 18, a reflector plate 20, and optical sheets 10.

Here, the light emitting diodes 12 generate light having a predetermined brightness in response to a driving signal from the light emitting diode substrate 14, and the light guide plate 18 receives light supplied from the light emitting diodes 12 from the liquid crystal display panel ( 4) Supply to. That is, the light guide plate 18 supplies the light supplied from its side to the first display panel 4 positioned above it.

In addition, the reflector 20 is located on the rear surface of the light guide plate 18 to re-inject light incident from the light guide plate 18 to the light guide plate 18. That is, the reflective plate 20 improves the light efficiency by resupplying the light incident on the light guide plate 18, and the first optical sheets 10 improve the brightness of the light supplied from the light guide plate 18. It supplies to the liquid crystal display panel 4.

In addition, the light emitting diode substrate 14 is connected to the first printed circuit board 24 and supplies a driving signal to the light emitting diodes 12 in response to a control signal supplied from the first printed circuit board 24, and a mold frame. The light emitting diode substrate 14 on which the light emitting diodes 12 are mounted is received and fixed to the first display panel 4 and the backlight assembly 50.

The chassis 22 is fixed to the mold frame 16 as a support for accommodating the first display panel and the second display panel, and a portion of the center of the chassis 22 is opened so that the second display panel 30 can be inserted. Is formed.

The configuration of the chassis will be described in more detail with reference to FIGS. 2 and 3. FIG. 2 is a perspective view of the chassis shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line II ′ of FIG. 2.

Guide rails 22b and 22b 'for guiding the second display panel 30 are provided at both sides of the opening 22a of the chassis 22. The guide rails 22b and 22b 'are spaced apart by the width of the second display panel 30 and may be formed in various ways. For example, as shown in the figure, the end portion may be bent into a "b" shape so that the second display panel 30 may be inserted between the chassis 22 and the bent portion, but is not limited thereto. It may also be provided continuously or discontinuously.

At this time, the material of the guide rails 22b and 22b 'may be made of plastic or metal.

In this way, the guide rails 22b and 22b 'on which the second display panel 30 slides are installed in the chassis 22, so that the second display panel 30 can be coupled to the chassis 22 without tape. The strength of the chassis 22 is also reinforced.

Referring back to FIG. 1, the second printed circuit board 26 receives a driving signal from an external driving circuit (not shown). To this end, the second printed circuit board 26 has a connector 28. The connector 28 is integrally fixed to another connector attached to an external driving circuit to receive a driving signal from an external driving circuit, and the second printed circuit board 26 supplied with the driving signal is connected to the driving signal supplied to the connector 28. Correspondingly, various control signals are generated.

Accordingly, the first printed circuit board 24 is connected to the second printed circuit board 26 through the first pad part 38 formed on the second printed circuit board 26, which is not shown in the flexible printed circuit board. The FPCB is connected to the integrated circuit 6 and the light emitting diode substrate 14 of the first display panel 4. The first printed circuit board 24 connected to the integrated circuit 6 and the light emitting diode substrate 14 may correspond to the integrated circuit 6 and the light emitting diode in response to control signals supplied from the second printed circuit board 26. It serves to drive the substrate 14.

In addition, in the exemplary embodiment of the present invention, the second display panel 30 is implemented as an organic light emitting display panel, and the second display panel 30 includes a first substrate 30a and a second substrate 30b. .

Accordingly, organic light emitting diodes (not shown) are disposed on the first substrate 30a in a matrix form, and the organic light emitting diodes generate light having a predetermined luminance corresponding to the amount of current supplied thereto. The second display panel 30 is connected to the second printed circuit board 26 by the second pad part 36 of the fusible printed circuit board 32. Here, an integrated circuit 34 is mounted on the flexible printed circuit board 32, and the integrated circuit 34 responds to control signals supplied from the second printed circuit board 26 to the second display panel 30. ), A predetermined image is displayed.

Next, a method of manufacturing a flat panel display device according to an embodiment of the present invention will be described. 4A and 4B illustrate a method of fixing a second display panel to a chassis according to an embodiment of the present invention.

First, the second display panel 30 is inserted between the gaps of the guide rails 22b and 22b 'formed on both sides of the chassis 22 to slide the chassis 22 to be located in the opening 22a. In other words, both end portions of the second display panel 30 are inserted between the gaps formed in the guide rails 22b and 22b 'from the side surfaces, and are pushed to expose the second display panel 30 onto the opening 22a. At this time, it is preferable that the gap is formed slightly larger than the thickness of the second display panel 30 so as to be tightly fitted and fixed.

Next, the second display panel 30 is electrically connected to the second printed circuit board 26 by soldering the flexible printed circuit board 32 formed on the second display panel 30 to the second printed circuit board 26. Connect it.

Although the present invention has been described primarily with reference to the above embodiments, many other possible modifications and variations can be made without departing from the spirit and scope of the invention. For example, changing the shape of the guide rail, changing the shape of the chassis, or changing the type of the first display panel and the second display panel.

The flat panel display device according to the present invention has a guide rail in the chassis, thereby combining the display panel and the chassis without a tape to reduce the thickness and increase the strength.

In addition, the manufacturing method of the flat panel display device according to the present invention is omitted, the step of attaching a tape, there is an effect of simplifying the process.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (9)

A first display panel displaying a screen on a front surface of the display panel; A second display panel displaying a screen on a rear surface facing the front surface; At least one printed circuit board transmitting a signal of an external driving circuit to the first display panel and the second display panel; A chassis accommodating the first display panel, the second display panel and the printed circuit board; And And a guide rail disposed on a rear surface of the chassis to slide and mount the second display panel. The method of claim 1, And the guide rails are disposed at both sides of the guide rail to be spaced apart by the width of the second display panel. The method of claim 1, And the guide rail is made of plastic or metal. delete The method of claim 1, And the first and second display panels are liquid crystal display panels. The method of claim 1, And the first display panel is a liquid crystal display panel, and the second display panel is an organic light emitting display panel. The method of claim 1, wherein the printed circuit board, A first printed circuit board connected to the first display panel; And a second printed circuit board connected to the second display panel. A first display panel displaying a screen on a front surface, a second display panel displaying a screen on a rear surface facing the front surface, and transmitting signals from an external driving circuit to the first display panel and the second display panel. A method of manufacturing a flat panel display device including at least one printed circuit board and a chassis accommodating the first display panel, the second display panel, and the printed circuit board. Preparing a chassis having a guide rail installed at a rear side thereof; Accommodating the first display panel on a front surface of the chassis; And And sliding the second display panel to a rear surface of the chassis through the guide rail. The method of claim 8, And soldering the flexible printed circuit board connected to the second display panel to the printed circuit board.

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