KR100739046B1 - Backlight module for homogenizing the temperature of a flat panel display device - Google Patents

Abstract

A light source device for a flat panel display includes a reflector including at least one light source, a concave groove accommodating the at least one light source, and equalizing the heat generated by the light source by sandwiching the reflector between the light source and A heat pipe to be removed. A flat panel display using the light source device includes a panel unit for displaying an image, the above-described light source device for providing illumination light to the panel unit, the panel unit and the light source device, and a part of the panel unit and the light source device. It has a frame surrounding the perimeter.

Flat Panel Display, Light Source, Heat Pipe

Description

LIGHTLIGHT MODULE FOR HOMOGENIZING THE TEMPERATURE OF A FLAT PANEL DISPLAY DEVICE}

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the frame for flat panel displays of this invention.

* Explanation of symbols for the main parts of the drawings

110: first frame outer wall 120: second frame outer wall

130: connection side wall 140: edge cap

150: back tube 160: reflection shade

170: heat pipe 180: heat transfer rubber pad

190: Light guide plate 200: flat panel display panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light source device and a flat panel display for a kind of flat panel display, and more particularly, to a light source device and a flat panel display having a temperature uniformity function.

In a flat panel display, when a light tube module is used to provide a sufficient light source for the display, there is a problem in that the temperature distribution is often uneven and the heat energy cannot be efficiently discharged. The heat source of the flat panel display originates from a light source (e.g., a back tube), and its heat dissipation path is radiated to the light reflector by the back tube or by the air transfer between the back tube and the light reflector by the back tube. After reaching the reflector, heat is again transferred to the metal frame and other components by the light reflector.

However, such a heat dissipation method has a relatively high heat resistance, resulting in uneven distribution, affecting the service life of the back tube. In addition, due to the unevenness of the back tube temperature, the back tube could not achieve the best brightness operating state. In addition, the local high temperature of the display panel due to the non-uniformity of the back tube temperature caused a high temperature deterioration phenomenon in the partial components of the display panel (for example, the polarizing plate or the like).

As a result, the local thermal energy generated by the light source (e.g., the back tube module) can be quickly discharged, thereby achieving the effect of temperature uniformity on the light source (e.g. the back tube), and While maintaining the operating temperature uniformly, it is possible to alleviate the aging phenomenon accelerated by the temperature distribution unevenness of the local portion of the light source (such as the back tube), and further reduce the probability of deterioration due to the high temperature of each component of the flat panel display. Therefore, there is a need for a light source device capable of increasing the operation efficiency and brightness of the back tube.

SUMMARY OF THE INVENTION The main object of the present invention is to provide a light source device for a flat panel display having a temperature uniformity function, and to have an effect of uniformizing the temperature distribution of the light source of the flat panel display, whereby a light source such as a light tube or a flat panel display It is to alleviate the aging phenomenon accelerated by the nonuniform local temperature distribution of the panel.

Another object of the present invention is to provide a flat panel display having a temperature uniformity function, which reduces the probability of deterioration due to the high temperature of each component of the flat panel display panel, thereby further improving the operational efficiency and luminance of the back tube. To raise.

It is yet another object of the present invention to provide a method of temperature homogenization of a flat panel display, to achieve the effect of temperature uniformity on a light source, such as a back tube, of a flat panel display, thereby providing localization of the light source, such as a back tube or a flat panel display panel. This is to alleviate the acceleration phenomenon of deterioration due to uneven temperature distribution.

Another object of the present invention is to reduce the probability of deterioration due to the high temperature of each component of the flat panel display panel, and to improve the operation efficiency and brightness of the light source in providing the method of uniformizing the temperature of the flat panel display. .

In order to achieve the above object, according to the present invention, a light source device for a flat panel display includes at least one light source, a reflection shade having a concave groove accommodating the at least one light source, and the reflection shade between the light source. And a heat pipe to equalize and remove heat generated by the light source.

The flat panel display according to the present invention comprises a panel unit for displaying an image, the above-described light source device that provides light for illumination to the panel unit, the panel unit and the light source device, and further includes a portion of the panel unit and the light source device. It is equipped with a frame surrounding it. Among them, the light source device includes at least one light source, a reflection shade having a concave groove accommodating the at least one light source, and equalizing heat generated by the light source by sandwiching the reflection shade between the light source and A heat pipe to be removed.

The method of temperature uniformity of the flat panel display of the present invention first provides a panel unit for displaying an image, and also provides a light source device including a backlight unit, a light source, a reflector and a heat pipe. Among them, the reflector has a concave groove for receiving at least one light source, and the heat pipe sandwiches the reflector between the light source and equalizes and removes heat generated by the light source. The method of temperature equalization of the flat panel display of the present invention also provides a frame for accommodating the light source device and the panel unit.

The invention of claim 1 is a light source device for a flat panel display.

At least one light source,

A reflection shade having at least one concave groove for receiving the at least one light source;

Light source,

A heat pipe for fitting a reflection shade between the light source is provided. A light source device for a flat panel display is provided.

The invention of claim 2 is a flat panel display,

The panel unit which displays an image,                     

A light source device providing light for illumination to the panel unit, the light source device including at least one light source, a reflector, and a heat pipe;

A frame accommodating at least the panel unit and the light source device and surrounding a portion of the panel unit and the light source device,

The reflector has at least one concave groove to receive the at least one light source, and the heat pipe sandwiches the reflector with the light source.

The invention of claim 3 is a flat panel display according to claim 2, wherein an end of the heat pipe is between the panel unit and the frame.

The invention of claim 4, wherein the frame is at least,

A first frame outer wall surrounding a part of the panel unit,

The second frame outer wall,

A connection interposed between the first frame outer wall and the second frame outer wall and connecting a part of the first frame outer wall and a part of the second frame outer wall to form a space for accommodating at least one panel unit; With sidewalls,

An edge cap formed together with the first frame outer wall to form a frame cap surrounding the panel unit,

The connecting side wall, the first frame outer wall, and the second frame outer wall form an opening leading to the hollow through which the panel unit can be inserted and taken out. The flat panel display according to claim 2 is used.                     

The invention of claim 5 is the flat panel display according to claim 4, wherein the heat pipe is sandwiched between the edge cap and the panel unit and extends between the connecting side wall and the panel unit.

According to a sixth aspect of the present invention, the connection side wall, the first frame outer wall, and the second frame outer wall form a space for accommodating at least one panel unit and one light source device, and further, the connection side wall, the first frame outer wall, and the second. The flat panel display according to Claim 4 is characterized in that the frame outer wall is provided with an opening leading to the hollow through which the panel unit and the light source device can be inserted and taken out.

According to a seventh aspect of the present invention, there is provided the flat panel display according to claim 2, wherein the heat pipe is in contact with the frame by a heat transfer rubber pad.

Invention of Claim 8 is the temperature uniformity method of a flat panel display,

A. providing a panel unit for image display,

B. providing a light source device comprising at least one light source, one reflector, and one heat pipe,

And the at least one concave groove sufficient to accommodate the at least one light source, wherein the heat pipe sandwiches the reflector between the heat pipe and the light source to equalize the heat generated by the light source. And the temperature homogenization method of the flat panel display characterized by removing.

According to a ninth aspect of the present invention, there is provided a method for uniformizing the temperature of the flat panel display according to claim 8, wherein the light source is sandwiched between the panel unit and the heat pipe.

The method according to claim 10, further comprising the step of providing a frame capable of accommodating the light source device and the panel unit in the method of uniformizing the temperature of the flat panel display. Doing.

The invention of claim 11, wherein the frame is at least,

A first frame outer wall surrounding a part of the panel unit,

The second frame outer wall,

A connection side wall inserted between the first frame outer wall and the second frame outer wall, and connecting a portion of the first frame outer wall to a portion of the second frame outer wall to form a space for accommodating at least one panel unit; and,

An edge cap forming a frame cap surrounding the panel unit together with the first frame outer wall;

The connection side wall, the first frame outer wall, and the second frame outer wall are provided with openings leading to the hollow through which the panel unit can be inserted and taken out. have.

According to a twelfth aspect of the present invention, the heat pipe is sandwiched between an edge cap and a panel unit and extends between the connecting side wall and the panel unit.                     

According to a thirteenth aspect of the present invention, the connecting side wall, the first frame outer wall, and the second frame outer wall form a space for accommodating at least one panel unit and one light source device, and further, the connecting side wall, the first frame outer wall, and the second. The frame outer wall forms an opening leading to the hollow through which the panel unit and the light source device can be inserted and taken out.

According to a fourteenth aspect of the present invention, the end of the heat pipe is between the panel unit and the frame.

(Embodiment of invention)

The light source of the light source device for flat panel display of this invention is located between the said reflection shade and a panel unit in the recessed groove of a reflection shade, Preferably it is located between a panel unit and a heat pipe. The heat pipe consists of any well-known heat pipe, and a circulating low heat resistance fluid is contained therein to quickly dissipate or exclude heat energy. There is no limitation on the length and shape of the heat pipe, and preferably, the length of the heat pipe is longer than the total length of the light source. There is no particular limitation on the material of the heat pipe, and the heat pipe may be, for example, a heat pipe produced by Thermal Core Co., Ltd. of Taiwan, Super Middle and High Technological Engineering Co., Ltd., or Japan High Pressure Engineering Co., Ltd. .

In the flat panel display of the present invention, the length of the heat pipe is unlimited, but preferably, the length of the heat pipe is longer than the entire length of the light source, or the end of the heat pipe is between the panel unit and the frame. There is no limitation on the frame of the flat panel display of the present invention, as long as the frame can be applied to any flat panel display. The display panel unit of the flat panel display of the present invention is not limited, and may be formed of any well-known display panel (for example, a display panel using an all-light source, a backlight, or a direct light source). The light source of the light source device of the present invention is not limited, and may be formed of any light source (for example, a display panel using an all-light source, a backlight, or a direct type light source).

The frame of the flat panel display of the present invention is preferably sandwiched between a first frame outer wall, a second frame outer wall, and a first frame outer wall and a second frame outer wall that surround a portion of the flat panel display panel. A connection side wall connecting a part of the periphery with a part of the second frame outer wall to form a space for accommodating at least one panel unit, and an edge cap forming the frame plug surrounding the panel unit together with the first frame outer wall; Among these, the connection side wall, the first frame outer wall and the second frame outer wall form an opening leading to the hollow so that the panel unit can be inserted and taken out. Although there is no limitation to the flat panel display of the present invention, it may be preferably made of a liquid crystal display.

The first frame outer wall and the connecting side wall of the present invention preferably form an edge frame having an L-shaped cross section or an inverted U-shaped cross section to surround a portion of the flat panel display. An edge frame having an L-shaped cross section or an inverted U-shaped cross section preferably consists of a frame that is bent and inverted U-shaped, and surrounds the three edges of a square flat display panel or flat display panel module. It is also combined with the second frame outer wall to form a space for receiving at least one flat panel display panel or flat panel module. Preferably, one space for accommodating the flat panel display panel unit and the light source device is formed.

The flat panel display panel or flat panel display unit or the light source device is preferably inserted or taken out by an opening leading to a hollow formed by the connecting side wall, the first frame outer wall, and the second frame outer wall. Coupling means may be selectively installed on the connection side wall, the first frame outer wall, and the second frame outer wall to fix the flat panel display panel, flat panel display panel unit, or light source device. The connecting side wall, the first frame outer wall, and the second frame outer wall may be formed of any material, but are preferably made of metal or plastic, most preferably metal, to be advantageous for the exclusion of thermal energy.

The second frame outer wall is parallel or nearly parallel to the first frame outer wall. The second frame outer wall is formed of any material, preferably plastic. Although the shape of the second frame outer wall is not limited, a space for accommodating the connection side wall, the first frame outer wall, and the flat panel display panel or flat panel display panel unit or light source device is formed. In the present embodiment, the edge stopper is formed of an elongated member having an inverted U-shaped cross section and forms a frame stopper surrounding the first frame outer wall and the flat panel display panel. However, the edge stopper may have a suitable cross-sectional shape. It is not limited to. There is no particular limitation on the shape of the edge stopper, but may be flat, hollow or reticulated, but is capable of accommodating or fixing the light source device. The edge closure is optionally coupled with the first frame outer wall, the second frame outer wall or the connecting side wall by means of fastening or coupling means as necessary.

There is no limitation to the light source of the present invention, but it is preferably made of LED or lamp tube. The light source reflected by the reflection shade enters the panel unit, and the light source is projected onto the flat panel display. The light source is optionally fixed to the edge plug or the connecting side wall by fastening means or coupling means, so as to facilitate assembly.

The heat pipe consists of any well-known heat pipe, and contains a circulating low heat resistance fluid therein to quickly dissipate or exclude heat. The heat pipe is optionally fixed to the edge plug or connecting side wall by means of fastening means or coupling means. Preferably, it is fixed to the edge cap or the connecting side wall of the frame by heat transfer rubber pads. Although there is no restriction | limiting in the shape of the said heat pipe, Preferably it becomes linear. There is no limitation on the length of the heat pipe, and it extends out of the edge cap if necessary, for example, to any part of the connecting side wall. The heat pipes are configured to rapidly and uniformly heat thermal energy generated in the local portion of the back tube (light source) of the liquid crystal display panel by the low heat resistance effect of the high thermal conductivity circulation of the fluid in the heat pipe. The first frame outer wall or the second frame outer wall is transmitted. In addition, by the heat exchange through the air, the edge cap, the connection side wall, the first frame outer wall or the second frame outer wall are cooled, and the local energy generated by the light source (for example, the back tube) is quickly discharged. Achieve the effect of temperature uniformity of the light source (such as a back tube). In this way, the operating temperature of each part of the light source (for example, the back tube) is kept uniform by the effect of temperature uniformity of the light source (for example, the back tube), and thus It eases the acceleration of aging caused by local temperature distribution unevenness. Further, the probability of deterioration due to the high temperature of each component of the flat panel display panel is reduced, and the operation efficiency and brightness of the back tube are increased.

(Example)

Reference is made to FIG. 1. 1 is a display diagram of a light source device and a flat panel display of the present invention. The light source device having a temperature equalizing function of the present invention includes a heat pipe 170, a light guide plate 190, and a reflection shade which accommodate a circulatory low heat resistance fluid (eg, water) therein to quickly disperse or exclude thermal energy. 160 and back tube 150 (light source) are provided. The reflector 160 receives the light source and reflects the light projected by the back tube 150 (light source) to enter the light guide plate 190.

A frame for a flat panel display having a temperature equalizing function of the present invention includes a first frame outer wall 110 for enclosing a portion of the flat panel display panel, and a second parallel or substantially parallel to the first frame outer wall 110. It is sandwiched between the frame outer wall 120 and the first frame outer wall 110 and the second frame outer wall 120, and surrounds a portion of the first frame outer wall 110 and a portion of the second frame outer wall 120. Connection side wall 130 to form a space to accommodate the at least one flat panel display panel. In addition, the frame for a flat panel display having a temperature equalizing function of the present invention further includes an edge cap 140 having an inverted U-shaped cross section, and the edge cap 140 is formed of one elongate member. A frame stopper surrounding the flat panel is formed together with the frame outer wall 110. The back tube 150 is installed at the inner circumference of the edge cap 140 to serve as a light source of the flat panel display panel. In addition, one heat pipe 170 is positioned around the inner circumference of the edge cap 140, and between or between the edge cap 140 and the panel unit (combination of the flat panel display panel 200 and the light guide plate 190). It is inserted between the edge cap 140 and the back tube 150, and is fixed to the frame by the heat transfer rubber pad 180, to remove the heat generated by the back tube 150. Among them, the connecting side wall 130, the first frame outer wall 110, and the second frame outer wall 120 form an opening leading to the hollow to insert and take out the panel unit. The frame of the present invention is configured to insert or take out a panel unit by an opening leading to a hollow formed by the connecting side wall 130, the first frame outer wall 110, and the second frame outer wall 120, thereby providing a conventional screw or The assembly method is simpler and more convenient than the other methods of assembling one by one. On the other hand, the heat pipe 170 of the frame of the present invention has a high heat transfer circulation action of the fluid in the heat pipe 170 for the heat energy generated in the local portion of the back tube 150 (light source) of the liquid crystal display panel. By the low heat resistance action, the connection side wall 130, the first frame outer wall 110, and the second frame outer wall 120 of the frame from the local or back tube 150 (light source) of the light guide plate 190 quickly and uniformly. Or transfer to the edge cap 140. In the present exemplary embodiment, the edge cap 140, the connection side wall 130, and the first frame outer wall 110 are made of metal, and thus, easily transfer heat. Local thermal energy generated by the back tube 150 (light source) by the transmission of the connection side wall 130, the first frame outer wall 110, the second frame outer wall 120, or the edge cap 140, or by cooling the air. Is quickly discharged, cools the back tube 150 (light source), and also cools the liquid crystal display module. By rapid discharge of thermal energy, the back tube 150 (light source) achieves the effect of temperature uniformity, and the liquid crystal display panel module also achieves the effect of temperature uniformity. Thus, by the function of the temperature uniformity of the back tube 150 (light source), the operating temperature of each part of the back tube 150 is kept uniform, thus aging due to the temperature distribution unevenness of the local portion of the back tube 150. Acceleration of the phenomenon is alleviated. In addition, due to the function of temperature uniformity, the probability of deterioration due to the high temperature of each component of the flat panel display panel is reduced, and the operation efficiency and brightness of the back tube are increased. Has excellent features.

In summary, the present invention differs from the well-known technology in terms of both its purpose, means, and function, and has one large technical feature of a light source device and a flat panel display having a temperature uniformity function. . The above embodiments are intended to illustrate the present invention and do not limit the scope of the present invention, and any detailed modifications or changes that may be made in accordance with the present invention shall fall within the claims of the present invention.

Claims (14)

In a light source device for a flat panel display, At least one light source, A reflection shade receiving the at least one light source and having at least one concave groove reflecting light of the light source; With heat pipe, And the reflection shade is positioned between the light source and the heat pipe. For flat panel displays, The panel unit which displays an image, A light source device providing light for illumination to the panel unit, the light source device including at least one light source, a reflector, and a heat pipe; A frame accommodating at least the panel unit and the light source device and surrounding a portion of the panel unit and the light source device, And at least one concave groove for receiving the at least one light source and reflecting the light of the light source, wherein the reflector is positioned between the light source and the heat pipe. The flat panel display of claim 2, wherein an end of the heat pipe is between the panel unit and the frame. The method of claim 2, wherein the frame is at least, A first frame outer wall surrounding a part of the panel unit, The second frame outer wall, A connection interposed between the first frame outer wall and the second frame outer wall and connecting a part of the first frame outer wall and a part of the second frame outer wall to form a space for accommodating at least one panel unit; With sidewalls, An edge cap formed together with the first frame outer wall to form a frame cap surrounding the panel unit, And the connecting side wall, the first frame outer wall, and the second frame outer wall form an opening leading to the hollow for inserting and removing the panel unit. The flat panel display according to claim 4, wherein the heat pipe is sandwiched between the edge cap and the panel unit and extends between the connecting side wall and the panel unit. 5. The method of claim 4, wherein the connection side wall, the first frame outer wall, and the second frame outer wall form a space for accommodating at least one panel unit and one light source device. 2. A flat panel display, characterized in that the frame outer wall has an opening leading to the hollow through which the panel unit and the light source device can be inserted and taken out. The flat panel display according to claim 2, wherein the heat pipe is in contact with the frame by a heat transfer rubber pad. In the temperature equalization method of a flat panel display, A. providing a panel unit for image display, B. providing a light source device comprising at least one light source, one reflector, and one heat pipe, And the at least one concave groove for receiving the at least one light source and reflecting the light of the light source, wherein the reflection shade includes heat generated by the light source positioned between the light source and the heat pipe. Uniformizing and removing temperature flattening method for a flat panel display. The method of claim 8, wherein the light source is sandwiched between the panel unit and the heat pipe. 10. The method of claim 8, further comprising providing a frame capable of accommodating the light source device and the panel unit. The method of claim 10, wherein the frame is at least, A first frame outer wall surrounding a part of the panel unit, The second frame outer wall, A connection side wall inserted between the first frame outer wall and the second frame outer wall, and connecting a portion of the first frame outer wall to a portion of the second frame outer wall to form a space for accommodating at least one panel unit; and, An edge cap forming a frame cap surrounding the panel unit together with the first frame outer wall; And the connecting side wall, the first frame outer wall, and the second frame outer wall have an opening leading to the hollow through which the panel unit can be inserted and taken out. 12. The method of claim 11, wherein the heat pipe is sandwiched between the edge cap and the panel unit and extends between the connecting side wall and the panel unit. 12. The wall of claim 11, wherein the connection side wall, the first frame outer wall, and the second frame outer wall form a space for accommodating at least one panel unit and one light source device, and the connection side wall, the first frame outer wall, and the second. A method of uniformizing the temperature of a flat panel display, wherein the frame outer wall has an opening leading to the hollow through which the panel unit and the light source device can be inserted and taken out. The method of claim 10, wherein an end of the heat pipe is between the panel unit and the frame.

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