KR20060084558A - A flat display device for preventing a flat display panel from moving freely - Google Patents

Abstract

The present invention relates to a flat panel display device for preventing the flow of the flat panel display panel. To this end, the flat panel display device according to the present invention includes a flat panel display panel for displaying an image, a fixing member for supporting the flat panel display panel, and an elastic member applied between the edge of the flat panel display panel and the fixing member. Here, the elastic member is adhesively fixed to the flat panel display panel and the fixing member, and the adhesive force of the elastic member to the fixing member is greater than the adhesive force of the elastic member to the flat panel display panel.

Flat Panel, Flow, Adhesive Layer, Elastic Member

Description

Flat panel display device to prevent the flow of flat panel display panel {A FLAT DISPLAY DEVICE FOR PREVENTING A FLAT DISPLAY PANEL FROM MOVING FREELY}

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

2 is a perspective view illustrating a flat panel display device according to an exemplary embodiment of the present invention.

3 is a cross-sectional view taken along line AA of FIG. 2.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel display device that prevents the flow of a flat panel display panel. More particularly, the present invention relates to a flat panel display that can firmly support a flat panel display panel to prevent scratches caused by the flow of the flat panel display panel. Relates to a device.

With the recent rapid development of semiconductor technology, the demand for liquid crystal display devices having improved performance while being smaller and lighter is exploding.

Recently, liquid crystal displays (LCDs), which have been in the spotlight, have advantages such as miniaturization, light weight, and low power consumption, and as an alternative means to overcome the disadvantages of the conventional cathode ray tube (CRT). It has been attracting attention and is currently used in almost all information processing equipment that requires a display device.

A general liquid crystal display device applies voltage to a specific molecular array of a liquid crystal to convert it into another molecular array, and visually changes optical properties such as birefringence, photoreactivity, dichroism, and light scattering characteristics of the liquid crystal cell emitted by the molecular array. It is a light-receiving display device which converts into a change and displays information using the modulation of the light by a liquid crystal cell.

The liquid crystal display panel provided inside the liquid crystal display device to display an image is fixedly supported on the backlight assembly for supplying light. As the thickness of the liquid crystal display device is gradually slimmed according to the demand of the consumer, the area of the backlight assembly to fix and support the liquid crystal display panel is gradually reduced. As a result, it becomes increasingly difficult to fix the liquid crystal display panel, thereby causing a flow problem of the liquid crystal display panel.

Since the liquid crystal display panel flows without being fixed on the backlight assembly, scratches occur not only on the liquid crystal display panel but also on the optical sheet positioned at the top of the backlight assembly. In addition, there is a problem that damage occurs in the polarizing plate attached to the surface of the liquid crystal display panel according to the flow of the liquid crystal display panel.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a flat panel display device capable of preventing a flat panel display panel from being damaged by preventing the flat panel display from flowing.

A flat panel display device according to the present invention for achieving the above object is a flat panel display panel for displaying an image, a fixing member for supporting a flat panel display panel, and an elastic member applied between the edge and the fixing member of the flat panel display panel. Include. Here, the elastic member is adhesively fixed to the flat panel display panel and the fixing member, and the adhesive force of the elastic member to the fixing member is greater than the adhesive force of the elastic member to the flat panel display panel.

The first adhesive layer is formed on the elastic member to be adhesively fixed to the flat panel display panel, and the second adhesive layer is formed on the lower elastic member to be adhesively fixed to the fixing member.

An adhesive force of the second adhesive layer may be greater than that of the first adhesive layer.

Here, the second adhesive layer may be selected from the group consisting of silicone, rubber and double-sided tape.

The first adhesive layer may be made of acryl-based resin.

The elastic member is preferably silicone or PET (polyethyrene terephthalate, polyethylene terephthalate).

The flat panel display panel may be a liquid crystal display panel.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. These embodiments of the present invention are merely for illustrating the present invention, but the present invention is not limited thereto.

FIG. 1 is an exploded perspective view of a flat panel display device 100 according to an exemplary embodiment of the present invention, in which an elastic member 623 is coated on an upper mold frame 62.

The structure of the flat panel display shown in FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the present invention can also be applied to flat panel display devices having other structures. In addition, although the liquid crystal display panel 50 is shown as a flat panel display panel used in the flat panel display apparatus 100 in FIG. 1, this is merely to illustrate the present invention and the present invention is not limited thereto. Therefore, other light-receiving flat panel displays may be used as well as a self-emission flat panel display panel such as an organic light emitting diode (OLED) may be used without using a backlight assembly 70.

The flat panel display device 100 shown in Fig. 1 includes a liquid crystal display panel 50, which is a flat panel display panel for displaying an image, and a backlight assembly 70 for supplying light thereto. In addition, in order to fix and support the liquid crystal display panel 50 to the backlight assembly 70, the top chassis 60 is covered with the edge of the liquid crystal display panel 50. The liquid crystal display panel assembly 40 displays an image on the liquid crystal display panel 50 due to a driving signal on the liquid crystal display panel 50 displaying an image. The backlight assembly 70 improves the luminance while guiding the light emitted from the light source 74 and supplies it to the liquid crystal display panel 50.

The liquid crystal display panel assembly 40 includes a liquid crystal display panel 50, driver integrated circuit packages 43 and 44, and a printed circuit board 42. In addition, other parts may be included as needed. As the driving IC packages 43 and 44 in which the integrated circuit chips 431 and 441 are mounted, a chip on film (COF) or a tape carrier package (TCP) may be used.

The liquid crystal display panel 50 includes a TFT substrate 51 composed of a plurality of TFTs (thin film transistors), a color filter substrate 53 positioned on the TFT substrate 51, and a liquid crystal (injected therebetween). Not shown). The TFT substrate 51 is a transparent glass substrate on which a matrix thin film transistor is formed, a data line is connected to a source terminal, and a gate line is connected to a gate terminal. In the drain terminal, a pixel electrode made of transparent indium tin oxide (ITO) as a conductive material is formed.

When electrical signals are input from the printed circuit board 42 to data lines and gate lines of the liquid crystal display panel 50, electrical signals are input to the source terminal and the gate terminal of the TFT, and the TFTs are input according to the input of these electrical signals. Is turned on or turned off, and an electrical signal necessary for pixel formation is output to the drain terminal.

On the other hand, the color filter substrate 53 is disposed thereon opposite the TFT substrate 51. The color filter substrate 53 is a substrate in which RGB pixels, which are color pixels in which a predetermined color is expressed while light passes, are formed by a thin film process, and a common electrode made of ITO is coated on the entire surface thereof. When power is applied to the gate terminal and the source terminal of the TFT and the thin film transistor is turned on, an electric field is formed between the pixel electrode and the common electrode of the color filter substrate. By this electric field, the arrangement angle of the liquid crystal injected between the TFT substrate 51 and the color filter substrate 53 is changed, and the light transmittance is changed according to the changed arrangement angle to obtain a desired pixel. Polarizers (shown in FIG. 3) are attached to the lower portion of the TFT substrate 51 and the upper portion of the color filter substrate 53 to linearly polarize visible light.

The printed circuit board 42 having elements for driving the liquid crystal display panel 50 includes a plurality of timings for applying a data driving signal and a gate driving signal, which are signals for driving the flat panel display 100, at an appropriate time. Signals are generated, and the gate driving signal and the data driving signal are applied to the gate line and the data line of the liquid crystal display panel 50, respectively. The gate driving IC package 43 is connected to an electrode formed on the TFT substrate 51 and the data driving IC package 44 to receive a driving signal transmitted from the printed circuit board 42.

A backlight assembly 70 is provided below the liquid crystal display panel assembly 40 to provide uniform light to the liquid crystal display panel 50.

An upper mold frame 62, which is a fixing member positioned below the liquid crystal display panel 50 and supporting the liquid crystal display panel 50, is installed above the backlight assembly 70, and an upper mold is disposed below the backlight assembly 70. A lower mold frame 10 which is fastened and fixed to the frame 62 is installed. The backlight assembly 70 is manufactured by combining the opening 621 formed in the upper mold frame 62 and the protrusion 105 formed in the lower mold frame 10.

The backlight assembly 70 is positioned on the light source 74 provided at both sides, the light guide plate 78 for guiding light emitted from the light source 74 to the liquid crystal display panel 50, and the lower front surface of the light guide plate 78. A reflective sheet 79 for reflecting light emitted from the light source 74, a light source cover 76 for wrapping and protecting the light source 74 and coating a reflective material on the inner surface to reflect the light emitted from the light source 74, and The optical sheet 72 is provided to improve the luminance of the light supplied from the light source 74 and provide it to the liquid crystal display panel 50. These internal parts are housed and fixed in a bottom chassis 64. Here, the light source may be a lamp or a light emitting diode (LED). This kind of light source is only for illustrating the present invention, and the present invention is not limited thereto. Therefore, other light sources may be used, or light sources in the form of linear or surface light sources may be used.

When manufacturing the flat panel display device 100, the liquid crystal display panel assembly 40 is seated on the backlight assembly 70, and then the data driver IC package 44 of the liquid crystal display panel assembly 40 is moved to the lower mold frame ( The printed circuit board 42 is fixed to the bottom surface of the bottom chassis 64 while bending outside of 10). The liquid crystal display panel assembly 40 fixed as described above is covered with the top chassis 60 and fixed to the backlight assembly 70.

On the back of the bottom chassis 64, an inverter (not shown) and a control board 42 (not shown), which are power supply PCBs, are installed. The inverter converts an external power supply to a constant voltage level to provide the light source 74, and the control board is connected to the printed circuit board 42 to convert an analog data signal into a digital data signal and provide it to the liquid crystal display panel 50. . The inverter and control board are protected by covering them with a shield case (not shown).                     

Although not shown in FIG. 1, the front case and the rear case are positioned under the upper and lower mold frames 10 of the top chassis 60, respectively, to form the flat panel display device 100 by combining them.

As shown in FIG. 1, an elastic member 623 is coated on the upper mold frame 62. The elastic member 623 is applied between the lower edge of the liquid crystal display panel 50 and the upper mold frame 62 to elastically support the liquid crystal display panel 50. Accordingly, even when an impact is applied to the flat panel display device 100 from the outside, the elastic member 623 elastically supports the liquid crystal display panel 50 so that the liquid crystal display panel 50 may not be damaged. Here, the elastic member may be applied using silicon or PET. For example, silicon or PET in a molten state may be applied onto the upper mold frame 62 and then cured, and the liquid crystal display panel 50 may be installed and fixed thereon. Silicone may be applied to a thickness of about 0.1mm, PET may be applied to a thickness of about 0.05mm thinner than this.

In particular, since the elastic member 623 is adhesively fixed to the liquid crystal display panel 50 and the upper mold frame 62, it is possible to prevent the liquid crystal display panel 50 from flowing during transportation or transportation of the flat panel display device 100. have. Since the adhesive force of the elastic member 623 to the upper mold frame 62 is greater than the adhesive force of the elastic member 623 to the liquid crystal display panel 50, separating the liquid crystal display panel 50 from the backlight assembly 70. It is easy.

2 is a perspective view illustrating a flat panel display device 100 according to an exemplary embodiment of the present invention in which all internal components of the flat panel display device 100 shown in FIG. 1 are combined.

In the present invention, since the liquid crystal display panel 50 illustrated in FIG. 2 is firmly attached and fixed to the lower portion, there is no risk of the liquid crystal display panel 50 flowing even when a strong impact is applied to the flat panel display device 100. Accordingly, there is no possibility of scratching or damage to the polarizing plate attached to the surface of the liquid crystal display panel 50, so that the liquid crystal display panel 50 can be efficiently protected even during transportation or transportation of the flat panel display device 100. .

3 is a cross-sectional view taken along the line AA of FIG. 2, and an enlarged cross-section of the elastic member 623 applied to the upper mold frame 62 is shown in an enlarged circle of FIG. 3.

As shown in the enlarged circle of FIG. 3, the first adhesive layer 623a is formed on the elastic member 623 to be adhesively fixed to the liquid crystal display panel 50. In addition, a second adhesive layer 623b is formed below the elastic member 623 to be adhesively fixed to the upper mold frame 62. As described above, since the elastic member 623 is fixed to the liquid crystal display panel 50 and the upper mold frame 62, the elastic member 623 is firmly supported to prevent the liquid crystal display panel 50 from flowing. have.

Here, it is preferable that the adhesive force of the second adhesive layer 623b is greater than the adhesive force of the first adhesive layer 623a. Since the liquid crystal display panel 50 and the backlight assembly 70 are separately manufactured and combined, and if necessary, the liquid crystal display panel 50 and the backlight assembly 70 must be separated and repaired. Therefore, the liquid crystal display panel 50 is preferably separated from the elastic member 623. Not. Accordingly, when the liquid crystal display panel 50 and the backlight assembly 70 are separated, the second adhesive layer may be formed of a material having a relatively strong adhesive force such that the elastic member 623 is attached to the backlight assembly 70 side rather than the liquid crystal display panel 50. 623b). Examples of the second adhesive layer 623b satisfying the above conditions include silicone, rubber, and double-sided tape, and a material may be selected from the group consisting of these. In addition, other materials having a relatively strong adhesive strength may be used as necessary.

On the other hand, the liquid crystal display panel 50 is attached to the upper mold frame 62 with an adhesive force that can prevent the flow, it should be separated from the upper mold frame 62 for convenience when reworking. do. To this end, a relatively weak adhesive force used for post-it is used as the first adhesive layer 623a formed between the elastic member 623 and the liquid crystal display panel 50. Examples of such materials include acrylic resins and the like. In addition, other materials may be used.

As such, the elastic member 623 is applied and fixed between the edge of the liquid crystal display panel 50 and the upper mold frame 62, thereby efficiently preventing the liquid crystal display panel 50 from flowing. ), The liquid crystal display panel 50 can be easily removed from the backlight assembly 70.

The flat panel display device 100 according to the present invention can prevent scratches or damage to the optical sheet on the liquid crystal display panel 50 during the reliability test. Accordingly, even if the upper mold frame 62 is manufactured in contact, the flow of the liquid crystal display panel 50 can be effectively prevented.

As described above, since the adhesive force of the elastic member to the fixing member is greater than the adhesive force to the flat panel display panel, the flat panel display panel can be easily removed from the backlight assembly when the flat panel display device is repaired.                     

In addition, since the first adhesive layer and the second adhesive layer are formed on the upper and lower portions of the elastic member, respectively, so that the first adhesive layer and the second adhesive layer are adhesively fixed to the liquid crystal display panel and the fixing member, the liquid crystal display panel is hard to flow by firmly fixing the flat panel display panel to the fixing member. .

In addition, since the adhesive force of the second adhesive layer is greater than that of the first adhesive layer, the flat panel display panel can be easily removed from the elastic member to which the first adhesive layer is attached.

Since the second adhesive layer can be selected from the group consisting of silicone, rubber and double-sided tape, there is an advantage that it is easy to obtain a material.

Since the first adhesive layer is made of acrylic resin, there is an advantage that the first adhesive layer can be easily peeled off while maintaining a constant adhesive force that can prevent the flow of the flat panel display panel, such as an adhesive applied to the post-it.

Since the elastic member may use silicon or PET as a material, there is an advantage that it is easy to obtain a material.

Since the liquid crystal display panel is used as the flat panel display panel, there is an advantage that the practical application is excellent.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

Claims (7)

Flat panel display panel for displaying images, A fixing member for supporting the flat panel display panel; An elastic member applied between an edge of the flat panel display panel and the fixing member A flat panel display device comprising: And the elastic member is adhesively fixed to the flat panel display panel and the fixing member, and the adhesive force of the elastic member to the fixing member is greater than the adhesive force of the elastic member to the flat panel display panel. In claim 1, And a first adhesive layer formed on the elastic member to be adhesively fixed to the flat panel display panel, and a second adhesive layer formed on the bottom of the elastic member to be adhesively fixed to the fixing member. In claim 2, A flat panel display device having an adhesive force of the second adhesive layer greater than that of the first adhesive layer. In claim 2, And the second adhesive layer is selected from the group consisting of silicon, rubber and double-sided tape. In claim 2, And the first adhesive layer is made of acryl-based resin. In claim 1, The elastic member may be silicon or PET (polyethyrene terephthalate, polyethylene terephthalate). In claim 1, And the flat panel display panel is a liquid crystal display panel.

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