KR20080004132A - Flat display device - Google Patents

Abstract

A flat display device is provided to acquire a shielding effect of ESD(ElectroStatic Discharge) and EMI(ElectroMagnetic Interference) by receiving display panels and printed circuit boards in one conductive chassis at once. A flat display device(100) includes a first display panel(110), a second display panel(130), a first printed circuit board(140), and a chassis(150). The first display panel includes a backlight unit. The first display panel may be formed of a liquid crystal display panel. The first display panel includes a first substrate, a second substrate, and a liquid crystal. The liquid crystal is injected between the first substrate and the second substrate. The second substrate includes a plurality of thin film transistors. A integrated circuit is mounted at one side of the second substrate. A data signal and a scanning signal are transmitted from the integrated circuit. A second printed circuit board(120) may be interposed between the first display panel and the second display panel. The chassis is made of a conductive metallic material. The chassis receives the first display panel, the second display panel, and the printed circuit boards at once.

Description

Flat Display Device

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

FIG. 2 is an enlarged view of the liquid crystal display according to the exemplary embodiment of FIG. 1.

3 is an exploded perspective view showing a flat panel display device according to a second embodiment of the present invention;

<Explanation of symbols for the main parts of the drawings>

110: first display panel 111a, 111b: substrate

115b: Light emitting diode 115c: Light emitting diode substrate

115a: Mold frame 115d: Light guide plate

115e: reflector 115: backlight unit

120: first printed circuit board 140: second printed circuit board

143 connector 130 second display panel

150: chassis

The present invention relates to a flat panel display, and more particularly, to a flat panel display including a chassis that simultaneously packs a display panel and a printed circuit board connected thereto.

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 organic 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), it is also installed in medium and large-sized products such as monitors and TVs.In particular, most of the portable devices such as mobile phones or PDAs are currently using flat panel display devices such as liquid crystal displays or organic light emitting displays. It is a situation.

In the conventional flat panel display device, according to the trend of slimming, the overall flat panel display device has been slimmed down by reducing the overall thickness of the display device and eliminating unnecessary protection elements.

In particular, in the conventional flat panel display device, a plurality of adhesive tapes, conductive tapes, and insulating tapes are inserted in order to couple various components and prevent static electricity, and the tape attaching process only increases manufacturing costs by increasing the number of man-hours. Rather, as mentioned above, it becomes an element that hinders the slimming of the portable display device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flat panel display device in which a display panel and a printed circuit board are simultaneously accommodated in one chassis in order to suppress the use of various tapes used.

According to an embodiment of the present invention, a flat panel display includes: at least one display panel displaying an image; At least one printed circuit board connected to the display panel; And a chassis in which a section in which an image of the display panel is displayed is opened and simultaneously packs the display panel and the printed circuit board.

According to another exemplary embodiment of the present invention, a flat panel display includes: a first display panel displaying an image on one surface; A second display panel provided on the other side of the first display panel and displaying an image in a direction opposite to the image display direction of the first display panel; A first printed circuit board provided on the other side of the second display panel and connected to each of the display panels by receiving an external signal; And a chassis accommodating the first display panel, the second display panel, and the first printed circuit board at the same time.

According to still another aspect of the present invention, there is provided a flat panel display including: a first display panel configured to display an image on one surface; A first printed circuit board provided on the other surface side of the first display panel and connected to the display panels by receiving an external signal; A second display panel provided on the other surface side of the first printed circuit board and displaying an image in a direction opposite to an image display direction of the first display panel; And a chassis accommodating the first display panel, the second display panel, and the first printed circuit board at the same time.

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

 1 is an exploded perspective view of a flat panel display device according to a first embodiment of the present invention. Although the present embodiment describes a dual type display device having a display panel on both sides of a mobile phone or the like as an example, those skilled in the art will recognize that the present invention can be applied to a simpler structure in which one display panel is provided.

Referring to FIG. 1, a flat panel display device 100 according to a first embodiment of the present invention includes a first display panel 110, a second display panel 130, and a first printed circuit board 140 including a backlight unit. ) And a chassis 150.

Here, the first display panel 110 displays a predetermined image. In an exemplary embodiment of the present invention, the first display panel 110 may be configured as a liquid crystal display panel.

2 is an enlarged perspective view of a first display panel including a liquid crystal display panel, in which the first display panel 110 is usually a first substrate 111a, a second substrate 111b, and a liquid crystal (not shown) injected therebetween. The second substrate 111b includes a plurality of thin film transistors (“TFTs”) arranged in a matrix form, and an integrated circuit is formed at one side of the second substrate 111b. 112 is mounted to supply data signals and scan signals from the integrated circuit 112.

The first substrate 111a of the first display panel is disposed to face the second substrate 111b. A common electrode made of ITO is coated on the entire surface of the first substrate 111a. When a voltage is applied, a predetermined electric field is formed between the common electrode and the pixel electrode, and the arrangement angle of the liquid crystal injected between the first substrate 111a and the second substrate 111b is changed by the electric field. In accordance with the changed arrangement angle, the light transmittance is changed to display a desired image.

In addition, the first display panel 110 is further provided with a backlight unit 115 for irradiating light to the lower portion of the panel to display an image. The backlight unit 115 includes a mold frame 115a, a light emitting diode substrate 115c having light emitting diodes 115b, a light guide plate 115d, a reflecting plate 115e, and optical sheets 115f.

Here, the light emitting diodes 115b generate light having a predetermined luminance in response to a driving signal from the light emitting diode substrate 115c, and the light guide plate 115d receives the light supplied from the light emitting diodes 115b. 110). That is, the light guide plate 115d supplies the light supplied from its side to the first display panel 110 positioned above it.

In addition, the reflecting plate 115e is positioned on the rear surface of the light guide plate 115d and supplies the light leaked from the light guide plate 115d back to the light guide plate 115d. That is, the reflecting plate 115e improves the light efficiency by resupplying the light incident on the light guide plate 115d, and the optical sheets 115f improve the brightness of the light supplied from the light guide plate 115d and so on. Supply to the panel 110.

A light emitting diode substrate 115c on which the light emitting diode 115b is mounted is accommodated in the mold frame 115a to fix the first display panel 110 and the backlight unit 115. At least one protrusion 117 is formed around the mold frame 115a along a side surface for coupling with the chassis to be described later.

In the exemplary embodiment of the present invention, the second display panel 130 is implemented as an organic light emitting display panel, and organic light emitting diodes (not shown) are disposed in a matrix form, and the organic light emitting diodes correspond to the amount of current supplied thereto. To generate light of a predetermined brightness. The second display panel 130 may be connected to the first printed circuit board 140 by a separate flexible printed circuit board according to the integrated circuit mounting method of the panel.

In the present embodiment, the first printed circuit board 140 is coupled after the second display panel 130. The first printed circuit board 140 serves as an interface between an external (eg, mobile phone set) driving circuit (not shown) and a display panel, and transmits a signal from the outside to the display panel, and transmits a series of signals for display. Components are mounted and connected to the copper foil circuit. To this end, the first printed circuit board 140 includes a connector 143. The connector 143 is integrally fixed to another connector attached to the external driving circuit and receives a driving signal from the external driving circuit.

In this case, a second printed circuit board 120 may be provided between the first display panel 110 and the second display panel 130. In this case, the second printed circuit board 120 drives the driving integrated circuit mounted on the display panel, and components related thereto are mounted. In addition, the second printed circuit board 120 serves to interface an external signal input to the first printed circuit board 140 to the driving integrated circuit. It is connected to the integrated circuit and the light emitting diode substrate 115c and serves to drive the integrated circuit 112 and the light emitting diode substrate 115b in response to control signals supplied from the first printed circuit board 140.

The chassis 150 is made of a conductive metal material and is combined with a mold frame 115 for accommodating components of the first display panel 110 (ie, the liquid crystal panel and the backlight unit), and the first display panel 110. The second display panel 130 and the printed circuit boards positioned therebetween are simultaneously accommodated. In this case, the center of the chassis 150 is opened to display an image of the second display panel 130.

The chassis 150 includes a protrusion groove 118 into which the protrusion 117 formed in the mold frame 1150 may be fitted, so as to directly couple with the mold frame 115. Coupling of the chassis and the mold frame may be coupled to the protrusion groove 118 and the protrusion 117 as in this embodiment, as well as other various coupling means may be employed.

As such, the components between the chassis 150 and the mold frame 115, that is, the second display panel 130 and the first and second printed circuit boards 120 and 140 are simultaneously accommodated to thereby accommodate the first printed circuit. The conductive tape may not be separately used between the substrate 140 and the chassis 150, and an adhesive tape may not be used between the second printed circuit board 120 and the first display panel 110.

In addition, since the chassis 150 is made of metal, for example, SUS, it is conductive, so that shielding effect of ESD (Electro Static Discharge) and EMI (Electro Magnetic Interference) generated from solder or parts of a printed circuit board is obtained. There is an advantage that it can.

In addition, all parts are combined using the chassis, so that the fixing tape can be removed and the impact resistance is excellent.

3 is an exploded perspective view showing a flat panel display device according to a second embodiment of the present invention. In this embodiment, the coupling sequence of the display panel and the printed circuit board between the first display panel and the chassis is different from that of the first embodiment, and the same reference numerals are used.

The second embodiment has a structure in which a first printed circuit board is provided between the first display panel and the second display panel, and when the first display panel 110 including the backlight unit 115 is in the front direction, the second display panel is sequentially formed. The first display panel, the second printed circuit board 120, the first printed circuit board 140, the second display panel 130, and the chassis 150 are stacked. Even in this case, the same effect may be realized since the chassis 150 may simultaneously accommodate the display panels and the printed circuit boards.

In this embodiment, those skilled in the art will understand that the position of the components between the first display panel 110 and the chassis 150 is not limited.

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, changes in the coupling order of the various components positioned between the first display panel and the chassis and changes in the coupling means of the first display panel and the chassis will not depart from the scope of the present invention.

According to the flat panel display device according to the present invention, by storing the display panels and printed circuit boards at once using a conductive chassis, the shielding effect of the ESD, EMI is excellent, and the use of conductive tape, fixed tape, etc. is suppressed, The substrate manufacturing process of the display device is simplified.

The scope of the above-described invention is defined in the following claims, not bound by the description in the text of the specification, all modifications and variations belonging to the equivalent scope of the claims will fall within the scope of the invention.

Claims (17)

In the flat panel display device, At least one display panel for displaying an image; At least one printed circuit board connected to the display panel; And And a chassis in which a section in which an image of the display panel is displayed is opened and simultaneously packs the display panel and the printed circuit board. The method of claim 1, And the bezel is made of metal. The method of claim 1, And the display panel comprises a first display panel for displaying an image on a front surface and a second display panel for displaying an image on a back surface. The method of claim 1, And the display panel is a liquid crystal display panel or an organic light emitting display panel. A first display panel displaying an image on one surface; A second display panel provided on the other side of the first display panel and displaying an image in a direction opposite to the image display direction of the first display panel; A first printed circuit board provided on the other side of the second display panel and connected to each of the display panels by receiving an external signal; And  And a chassis for simultaneously accommodating the first display panel, the second display panel, and the first printed circuit board. The method of claim 5, And a second printed circuit board connecting the first display panel and the first printed circuit board between the first display panel and the second display panel. The method of claim 5, And a coupling means for coupling the chassis and the first display panel. The method of claim 7, wherein And the coupling means includes a protrusion formed in the mold frame of the first display panel and a groove of the chassis fitted into the protrusion. The method of claim 5, And the image display area of the first display panel and the second display panel is opened. The method of claim 5, And the first display panel is implemented as a liquid crystal display panel. The method of claim 5, The second display panel is implemented as an organic light emitting display panel. A first display panel displaying an image on one surface; A first printed circuit board provided on the other surface side of the first display panel and connected to the display panels by receiving an external signal; A second display panel provided on the other surface side of the first printed circuit board and displaying an image in a direction opposite to an image display direction of the first display panel; And  And a chassis for simultaneously accommodating the first display panel, the second display panel, and the first printed circuit board. The method of claim 12, And a coupling means for coupling the chassis and the first display panel. The method of claim 12, And the coupling means includes a protrusion formed in the mold frame of the first display panel and a groove of the chassis fitted into the protrusion. The method of claim 12, And the image display area of the first display panel and the second display panel is opened. The method of claim 12, And the first display panel is implemented as a liquid crystal display panel. The method of claim 12, The second display panel is implemented as an organic light emitting display panel.

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