KR20070064104A - Liquid crystal display - Google Patents

Abstract

An LCD(Liquid Crystal Display) is provided to facilitate the replacement of a lamp, by forming an opening in a lateral portion of a container so that the lamp freely enters or exits the container through the opening of the container. An LCD panel(136) displays an image by using light. A container(160) receives the LCD panel, wherein the container has an opening(161) formed in a sidewall thereof. A lamp assembly(140) is positioned below the LCD panel to supply light to the LCD panel. The container receives the lamp assembly through the opening thereof. The lamp assembly includes a lamp(143), lamp supporters(145) positioned at both sides of the lamp, and lamp electrodes electrically connected to the lamp. The lamp electrodes are laterally protruded from the lamp supporters.

Description

Liquid crystal display

1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating a process of attaching and detaching a lamp to the liquid crystal display of FIG. 1.

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

(Explanation of symbols for the main parts of the drawing)

100: liquid crystal display device 110: upper storage container

112: opening 114: coupling hole

130: liquid crystal panel assembly 131: gate tape carrier package

132: data tape carrier package 133: thin film transistor array panel

134: common electrode display panel 135: printed circuit board

136: liquid crystal panel 140: backlight assembly

141: optical sheets 142: optical plate

143: lamp 144: reflector

145: lamp support 146: lamp electrode

150: storage frame 152: opening

160: lower storage container 161: opening

170: auxiliary frame 172: contact terminal

174: slot 176: coupling hole

180: screw

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device in which the light source is easily replaced.

Cathode ray tube (CRT), which is one of the display devices that are generally used, is mainly used for monitors such as televisions, measuring devices, information terminal devices, etc., but due to its own weight and size, It could not actively respond to the demand for miniaturization and weight reduction.

In order to replace the cathode ray tube, it has advantages such as small size, light weight, low power consumption, and the like, and a liquid crystal display device that displays information by using the electrical and optical properties of the liquid crystal injected into the liquid crystal panel has been actively developed. Recently, it plays a role as a flat panel display device. In general, the liquid crystal display device is a display device having low power consumption, light weight, and small volume. The liquid crystal display device has been widely applied to a wide range of industries, for example, the computer industry, the electronic industry, and the telecommunication industry due to such unique advantages. As a matter of fact, the liquid crystal display device having such advantages has been applied to various fields such as a display device of a portable computer, a monitor of a desktop computer, and a monitor of a high-definition video device.

The liquid crystal display is largely divided into twisted nematic (TN) and super-twisted nematic (STN) methods, and the active matrix display method using the switching element and the TN liquid crystal and the passive matrix using the STN liquid crystal due to the difference in driving method. There is a passive matrix display method.

The big difference between these two methods is that the active matrix display method is used for TFT-LCD, which drives the LCD using the TFT as a switch, and the passive matrix display method does not use transistors, thus requiring a complicated circuit. Do not LCDs using TFTs are widely used in recent years with the spread of portable computers.

Such a liquid crystal display itself is a light-receiving element that emits light by itself and does not form an image, but receives light from the outside, and thus requires a separate light source, for example, a lamp.

In the case of a conventional medium and large liquid crystal display using a Cold Cathode Fluorescent Lamp (CCFL) lamp, the lamp has an average lifetime of about 50,000 hours, and thus the lamp should be replaced when the lamp reaches its end of life. However, when a lamp mounted on a conventional liquid crystal display device has a complicated structure and a lamp needs to be replaced, the lamp needs to be replaced after all of the liquid crystal display devices have been replaced. have.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a liquid crystal display device in which replacement of a light source is easy.

Technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a liquid crystal display device including: a liquid crystal panel for displaying an image using light; an opening container formed at a sidewall of the liquid crystal panel; And a lamp assembly accommodated in the storage container and positioned under the liquid crystal panel to provide the light.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete and common knowledge in the technical field to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, and the invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a liquid crystal display according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention. Referring to FIG. 1, the liquid crystal display 100 according to the exemplary embodiment of the present invention generally includes a liquid crystal panel assembly 130, a backlight assembly 140, an upper storage container 110, and a lower storage container 160. Include.

The liquid crystal panel assembly 130 includes a thin film transistor array panel 133, a liquid crystal panel 136 including a common electrode display panel 134, a liquid crystal (not shown), a gate tape carrier package 131, and a data tape carrier package 132. ) And a printed circuit board 135.

The liquid crystal panel 136 includes a thin film transistor array panel 133 including a gate line (not shown) and a data line (not shown), a thin film transistor array, a pixel electrode, and the like, a black matrix, a common electrode, and the like. And a common electrode display panel 134 disposed to face the thin film transistor array panel 133.

The gate tape carrier package 131 is connected to each gate line (not shown) formed on the thin film transistor array panel 133, and the data tape carrier package 132 is each data line (not shown) formed on the thin film transistor array panel 133. ) Is connected.

Meanwhile, in the printed circuit board 135, various driving processes for processing both the gate driving signal and the data driving signal for inputting the gate driving signal to the gate tape carrier package 131 and the data driving signal to the data tape carrier package 132 are performed. The part is mounted.

In addition, the backlight assembly 140 may include optical sheets 141, an optical plate 142, a lamp 143, and a reflecting plate 144.

The lamp 143 is a light source that provides light to the liquid crystal panel 136. The lamp 143 may be an external electrode fluorescent lamp (EEFL), a cold cathode fluorescent lamp (CCFL), a light emitting diode (LED), or the like. . The lamp 143 generates light by a lamp driving voltage applied to the lamp 143 from the outside. In addition, the lamps 143 may be spaced apart at a uniform distance and connected in phase in parallel, and may be configured in a direct type. Lamp supporters 145 are positioned at both ends of the lamp 143 to support and fix the lamp 143. The lamp support 145 has a lamp electrode 146 protruding laterally, and the lamp electrode 146 is electrically connected to the lamp 143.

The lamp electrode 146 of the lamp support 145 is coupled to the auxiliary frame 170 electrically connected to an inverter (not shown) providing a lamp driving voltage. Such a lamp 143 and the lamp support 145 is called a lamp assembly.

The optical plate 142 may be installed on the upper portion of the lamp 143, and serves to improve luminance uniformity of light generated from the lamp 143.

The reflection plate 144 is installed under the lamp 143 to reflect the light emitted to the bottom of the lamp 143 to the top. The reflecting plate 144 may be integrally formed on the bottom surface of the lower storage container 160. That is, the lower storage container 160 may be made of a material having high reflectivity such as aluminum (Al) or an aluminum alloy so that the lower storage container 160 may perform the function of the reflecting plate 144. The optical sheets 141 are installed on the optical plate 142, and serve to diffuse and collect light transmitted from the lamp 143. The optical sheets 141 include a diffusion sheet, a first prism sheet, a second prism sheet, and the like.

In this case, the diffusion sheet is positioned above the lamp 143 and serves to improve brightness and uniformity of light incident from the lamp 143.

The first prism sheet is positioned above the diffusion sheet, and one surface of the first prism sheet has a triangular prism pattern (not shown) for condensing and emitting light diffused from the diffusion sheet and having a constant arrangement. A brightness enhancement film may be used as the first prism sheet.

The second prism sheet is a reflective polarizing prism sheet having a multi-layered structure positioned on the first prism sheet and condensing and polarizing light. A dual brightness enhancement film may be used as the second prism sheet. According to the product specification of the liquid crystal display, the second prism sheet may be excluded when the luminance and the viewing angle are sufficiently secured by the first prism sheet alone.

The liquid crystal panel assembly 130 is installed on the optical sheets 141 and is supported by the storage frame 150 together with the backlight assembly 140 and seated in the lower storage container 160. Slit-shaped openings 161 are formed at opposing sidewalls of the lower storage container 160. The opening 161 serves as a movement passage through which the lamp 143 can enter and exit through the side wall of the lower storage container 160.

The storage frame 150 is formed of sidewalls formed along a rectangular edge, and has a structure in which a stepped portion or a protrusion is formed on an inner wall to support the liquid crystal panel assembly 130 and the backlight assembly 140. The lower storage container 160 has a rectangular shape and a sidewall is formed along the edge of the upper surface to receive and fix the backlight assembly 140 and the liquid crystal panel assembly 130 in the sidewall, and include a plurality of sheets. Prevents the backlight assembly 140 from bending.

Opposite sidewalls of the storage frame 150 are formed with slit-shaped openings 152 corresponding to the openings 161 of the lower storage container 160, and the openings 152 are provided with a lamp 143. It serves as a moving passage that can enter and exit through the side wall of 150.

The printed circuit board 135 of the liquid crystal panel assembly 130 is bent along the outer wall of the lower storage container 160 and seated on the rear surface of the lower storage container 160. Here, the shape of the lower storage container 160 may be variously modified according to a method of accommodating the backlight assembly 140 or the liquid crystal panel assembly 130 in the lower storage container 160.

In addition, the upper accommodating container 110 is disposed to be coupled to the lower accommodating container 160 to cover an upper surface of the liquid crystal panel assembly 130 accommodated in the lower accommodating container 160. A window for exposing the liquid crystal panel assembly 130 to the outside is formed on an upper surface of the upper accommodating container 110. Opposite sidewalls of the upper storage container 110 are formed with slit-shaped openings 112 corresponding to the opening 161 of the lower storage container 160 and the opening 152 of the storage frame 150. The opening 152 serves as a moving passage that can enter and exit through the side wall of the upper storage container 110 of the lamp 143.

The upper storage container 110 may be coupled to the lower storage container 160 through hook coupling (not shown) and / or screw coupling (not shown). In addition, the combination of the upper storage container 110 and the lower storage container 160 may be modified in various forms.

Hereinafter, a method of attaching and detaching a lamp in a liquid crystal display according to an exemplary embodiment of the present invention will be described with reference to FIGS. 2 and 3. FIG. 2 is an exploded perspective view illustrating a process of attaching and detaching a lamp to the liquid crystal display of FIG. 1. 3 is a cross-sectional view taken along line III-III ′ of FIG. 2.

Referring to FIG. 2, first, the liquid crystal panel assembly 130, the storage frame 150, and the backlight assembly 140 are accommodated in the upper storage container 110 and the lower storage container 160. In this case, the opening 112 of the upper storage container 110, the opening 152 of the storage frame 150, and the opening 161 of the lower storage container 160 are connected to each other, so that these openings 112 and 152 are connected to each other. The lamp 143 may be disposed on the rear surface of the liquid crystal panel 136 through the 161.

When the lamp 143 is disposed below the liquid crystal panel 136, the auxiliary frame 170 disposed at the side of the lamp 143 is combined with the lamp support 145. Referring to FIG. 3, the lamp electrode 146 formed on the lamp support 145 is inserted into the slot 174 formed on one surface of the auxiliary frame 170 and electrically connected to the contact terminal 172 formed in the slot 174. Connected. As mentioned above, the auxiliary frame 170 electrically connected to the inverter electrically couples the lamp driving voltage from the inverter to the lamp 143 by electrically coupling the lamp support 145 via the contact terminal 172 and the lamp electrode 146. ) Can be delivered.

In order to fix the auxiliary frame 170 coupled with the lamp support 145, the auxiliary frame 170 may be fastened to the upper storage container 110 by screwing. That is, predetermined coupling holes 114 and 176 are formed in the upper storage container 110 and the auxiliary frame 170, respectively, and the screw 180 is fastened through the coupling holes 114 and 176, so that the upper storage container 110 is formed. Screw is made between the auxiliary frame 170.

If the user needs to replace the lamp 143 due to the long life of the lamp 143 by using the liquid crystal display device 100 for a long time, first disassemble the auxiliary frame 170 from the upper storage container 110. The lamp 143 can be easily replaced by detaching the lamp 143 and the lamp support 145 through the openings 112, 152, and 161.

The liquid crystal display according to the exemplary embodiment of the present invention described above has been described using a direct type backlight assembly including a plurality of lamps disposed under the liquid crystal panel as one example, but the present invention is not limited thereto. The liquid crystal display may be applied to any liquid crystal display device having a structure capable of attaching and detaching a lamp through an opening formed in the sidewall. For example, the present invention may also be applied to a liquid crystal display including a light guide plate and an edge type backlight assembly having a lamp on a side of the light guide plate. The edge type backlight assembly includes a wedge type backlight assembly having a lamp assembly at one side of the light guide plate, and a flat backlight assembly having a lamp assembly at both sides of the light guide plate having a flat plane. Include.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

As described above, according to the liquid crystal display device according to the present invention, the lamp can be easily replaced when the life of the lamp reaches the end by forming an opening on the side of the storage container so that the light source, for example, the lamp can freely enter and exit.

Claims (9)

A liquid crystal panel which displays an image using light; An opening container formed in a sidewall and containing the liquid crystal panel; And And a lamp assembly accommodated in the storage container through the opening and positioned under the liquid crystal panel to provide the light. According to claim 1, The lamp assembly includes a lamp for providing the light, a lamp support positioned at both ends of the lamp to support the lamp, and a lamp electrode protruding laterally from the lamp support and electrically connected to the lamp. Display device. The method of claim 2, And an auxiliary frame coupled to the lamp supporter and fastened to the storage container to fix the lamp supporter. The method of claim 3, wherein And the auxiliary frame is coupled to the storage container through screwing. The method of claim 3, wherein The auxiliary frame includes a slot formed on one surface to insert the lamp electrode, And the lamp electrode is electrically connected to a contact terminal formed in the slot. The method of claim 3, wherein The auxiliary frame is electrically connected to an inverter providing a lamp driving voltage, The lamp driving voltage is transferred to the lamp via the auxiliary frame and the lamp support. According to claim 1, The opening is a slit-shaped liquid crystal display device. According to claim 1, And the openings are formed on opposite sidewalls of the storage container. According to claim 1, The storage container includes a lower storage container housing the liquid crystal panel from below, and an upper storage container coupled to the lower container so as to cover an upper surface of the liquid crystal panel housed in the lower storage container. The opening includes a first opening formed in a side wall of the upper container and a second opening formed in a position corresponding to the first opening on a side wall of the lower container.

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