TW201312222A - Display panel module and heat dissipation assembly for display panel module - Google Patents

Abstract

A heat dissipation assembly for a display panel module includes a main bracket, at least one heat conduction block and at least one high-performance heat conduction device. The heat conduction block is mounted on the main bracket, and one side of the heat conduction block is adapted to touch a back plate of a backlight module. On end of the high-performance heat conduction device is connected with the heat conduction block, and another end of the high-performance heat conduction device extends away from the heat conduction block and spreads on different regions of the main bracket.

Description

Display panel module and heat dissipation component for display panel module

The invention relates to a display panel module and a heat dissipation component for the display panel module.

If too much heat is accumulated in a display panel module, the temperature of the light-emitting element locally rises, resulting in a decrease in luminous efficiency, a chromaticity shift, and a decay in lifetime of the light-emitting element. As shown in FIG. 1 , in a conventional display panel module 100, components such as the backlight module 102 and the display panel 104 are housed in a main frame 106, and the heat generated by the LED strip 102a is mainly via heat. The components such as the back plate 102b and the bezel 108 are dissipated, and in particular, most of the heat is dissipated through the back plate 102b having a large area. However, the back side of the back plate 102b is covered by the timing control board 112, the timing control board cover 114, and the like, and the area covered by the back board 102b cannot effectively dissipate heat and easily generate heat accumulation, resulting in a backlight module. 102 and the problem that the display panel 104 is too hot.

Taiwan Patent Publication No. TW201037421 discloses a heat conduction structure design of a display panel module, and a heat conduction structure is disposed between the back plate and the bottom frame to derive heat. Taiwan Patent Publication No. TW577684 discloses a liquid crystal television module comprising a liquid crystal screen, a light source module, a thermal conductive silicone film, a control circuit board, a heat sink and a casing, and the casing has an opening to expose the heat sink. Taiwan Patent Publication No. TW200902897 discloses a design in which the heat of the display panel is transferred to the flexible circuit board via the graphite sheet and is dissipated outward through the back cover. Taiwan Patent Publication No. TWI276391 discloses a design of a heat transfer tube and a heat sink fin disposed on a back cover of a backlight module. Taiwan Patent Publication No. TWM244475 discloses a backlight module in which an aluminum extruded backing plate is connected to a heat dissipating unit by a thermal conductive adhesive, and heat is conducted to the outer casing via the heat radiating unit.

The invention provides a display panel module and a heat dissipation component with high heat dissipation efficiency and heat uniformity.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. An embodiment of the present invention provides a display panel module including a main frame, a backlight module, a display panel, a control unit, and a heat conduction unit. The backlight module is disposed in the main frame and includes a back plate, a light guide plate and at least one light source, and a gap is formed between the main frame and the back plate. The display panel is placed in the main frame and overlaps the backlight module, and the control unit is placed on one side of the main frame. The heat conducting unit is disposed between the back plate and the main frame, and the heat conducting unit comprises a first heat conducting member and a second heat conducting member, wherein the first heat conducting member respectively contacts the back plate and the main frame, and the second heat conducting member is connected to the first heat conducting member and distributed on the main The frame faces the side of the back panel.

In an embodiment, the control unit includes a timing control board.

In an embodiment, the control unit covers a portion of the backplane, and the position of the heat conducting unit does not overlap the control unit.

In one embodiment, the first heat conducting member comprises at least one heat conducting block, and the second heat conducting member comprises at least one high efficiency heat dissipating conductor. The heat conducting block can be an aluminum block or a copper block, and the high efficiency heat dissipating conductor can be a heat pipe, a hot column or a heat spreader.

In one embodiment, one end of the second heat conducting member is connected to the first heat conducting member and the other end of the second heat conducting member is distributed in a plurality of different regions of the main frame in a direction away from the first heat conducting member.

In one embodiment, the display panel module further includes a power module and a firmware control circuit board, and the power module and the firmware control circuit board are disposed on the main frame, and the position of the heat conduction unit is not overlapped with the power module and the toughness Body control board.

Another embodiment of the present invention provides a heat dissipating assembly for a display panel module, including a main frame, at least one heat conducting block, and at least one high efficiency heat dissipating conductor. The heat conducting block is fixed to the main frame, and one side of the heat conducting block is adapted to be attached to the back plate of the backlight module. One end of the high-efficiency heat-dissipating conductor is connected to the heat-conducting block, and the other end of the high-efficiency heat-dissipating conductor is distributed in a plurality of different regions of the main frame in a direction away from the heat-conducting block.

In one embodiment, the heat dissipation fins are sleeved on the high efficiency heat dissipation conductor of the heat dissipation component.

In summary, the display panel module and the heat dissipating component of the embodiment of the present invention have at least one of the following advantages: by the design of the above embodiment, since the first heat conducting member having a high thermal conductivity has a whole surface contacting the backing plate, The two heat conducting members (high-efficiency heat-dissipating conductors) are extended and distributed on different areas of the entire surface of the main frame. The first heat-conducting member has a large volume and has a large heat capacity and a heat-transfer area, so the heat conduction speed is fast and the heat transferred is large. The second heat-conducting member can quickly remove the heat of the first heat-conducting member to maintain a higher temperature gradient across the first heat-conducting member and maintain a faster heat-conducting speed, so the heat-conducting unit can quickly adjust the backing plate to the timing control board. The heat conduction on the covered area to the cold zone of the main frame avoids the problem of heat accumulation, so the temperature of the light source and the display panel can be effectively reduced, thereby improving the luminous efficiency and service life of the light source and the stability and service life of the display panel. . On the other hand, since the heat energy can be quickly transmitted to the cold zone of the main frame by the high-efficiency heat-dissipating conductor and uniformly dispersed, the heat uniformity of the backlight module as a whole can be improved, and the structure in the backlight module can be prevented from being heated due to uneven heating. Thermal deformation.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. The above and other objects, features, and advantages of the invention will be apparent from

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments of the invention. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

Referring to FIG. 2 and FIG. 3 , a display panel module 10 includes a main bracket 12 , a backlight module 14 , a display panel 16 , a control unit 18 , and a heat conducting unit 22 . The backlight module 14 is received in the main frame 12 and includes a back plate 14a, a light guide plate 14b and at least one light source 14c, and a gap R is formed between the back plate 14a and the main frame 12. The display panel 16 is housed in the main frame 12 and overlaps the backlight module 14. The control unit 18 is disposed on one side of the main frame 12. In this embodiment, the control unit 18 can include, for example, a timing control board 18a and a cover 18b covering the timing control board. A heat conducting unit 22 is disposed between the back frame 14a and the main frame 12. The heat conducting unit 22 can include a first heat conducting member 22a and a second heat conducting member 22b. The first heat conducting member 22a is disposed between the main frame 12 and the back plate 14a. The gap R is in contact with the back plate 14a and the main frame 12, respectively, and the second heat conducting member 22b is connected to the first heat conducting member 22a and distributed on the side of the main frame 12 facing the backing plate 14a. In addition, a front cover 24 can be embedded in the main frame 12 to limit the respective optical components of the display panel module 10.

In this embodiment, the first heat conducting member 22a includes at least one heat conducting block such as copper or aluminum, and the second heat conducting member 22b includes at least one high efficiency heat dissipating conductor, and the high efficiency heat dissipating conductor may be, for example, a heat pipe, a hot column or Soaking tablets and so on. As shown in FIG. 3, in the present embodiment, the position of the heat conduction unit 22 is not overlapped with the control unit 18, so that a good heat dissipation path can be formed. As indicated by the dashed line in Fig. 3, the direction of the arrow is the main direction of heat dissipation of the thermal energy generated by the dissipating light source 14c. When heat is conducted to an area where the backing plate 14a is covered by the timing control board 18a, the conventional design tends to easily cause the problem of heat accumulation there. However, with the design of the above embodiment, since the first heat-conducting member 22a having a high heat transfer coefficient contacts the back plate 14a over the entire surface, one end of the second heat-conducting member 22b (high-efficiency heat-dissipating conductor) is connected to the first heat-conducting member 22a and the other end. The heat conducting unit 22 can quickly guide the heat on the area covered by the timing control board 18a to the main frame 12 in a direction away from the first heat conducting member 22a and distributed over different areas of the entire surface of the main frame 12. Cold area. With this design, the problem of heat accumulation of the back plate 14a on the area corresponding to the timing control board 18a can be avoided, so that the temperature of the light source 14c and the display panel 16 can be effectively reduced to improve the luminous efficiency and service life of the light source 14c. The stability and service life of the display panel 16 are shown. On the other hand, since the heat energy can be quickly transmitted to the cold zone of the main frame 12 by the high-efficiency heat-dissipating conductor and uniformly dispersed, the heat uniformity of the backlight module 14 can be improved, and the structure in the backlight module 14 can be prevented from being heated. Both produce thermal deformation.

As shown in FIG. 4, in an embodiment, the first heat conducting member 22a (for example, the aluminum block M) and the second heat conducting member 22b (for example, the heat pipe P) may be fixed to the main frame 12 and the main frame before assembly. 12 combine to form an integrated heat sink assembly 20 that modularizes the assembly process and simplifies the assembly process. It can be clearly seen from FIG. 4 that the second heat-conducting member 22b (heat pipe P) is distributed over a different area of the entire surface of the main frame 12. In addition, for example, a power module 32 and a firmware control circuit board 34 can be disposed on the main frame 12, and the heat conducting members 22a, 22b can be disposed away from the power module 32 and the firmware control circuit board 34, and the heat pipe P is disposed. The distribution pattern on the main frame 12 can be arbitrarily changed, and only the power module 32 and the firmware control circuit board 34 need not be stacked. The heat-dissipating unit 22 further includes a heat-dissipating fin 26, and the heat-dissipating fins 26 may be disposed to increase the heat-dissipating area to improve the heat-dissipating effect, and the heat-dissipating fins 26 may be sleeved on the second heat-conducting member 22b. For example, the heat dissipation fins 26 may be sleeved at one end of the heat pipe P.

As a result of experimental tests by the inventors, it has been found that, according to the design of the above embodiment, the surface temperature of the display panel 16 can be reduced by up to 4.8 ° C compared to the conventional design, and the surface temperature of the back sheet 14a can be reduced by up to 2.7 ° C compared to the conventional design.

In summary, the display panel module and the heat dissipating component of the embodiment of the present invention have at least one of the following advantages: by the design of the above embodiment, since the first heat conducting member having a high thermal conductivity has a whole surface contacting the backing plate, The two heat conducting members (high-efficiency heat-dissipating conductors) are extended and distributed on different areas of the entire surface of the main frame. The first heat-conducting member has a large volume and has a large heat capacity and a heat-transfer area, so the heat conduction speed is fast and the heat transferred is large. The second heat conducting member having a wider distribution area can quickly remove the heat of the first heat conducting member to maintain a higher temperature gradient across the first heat conducting member and maintain a faster heat transfer speed, so the heat conducting unit can quickly The heat conduction on the area covered by the timing control board to the cold area of the main frame avoids the problem of heat accumulation, so the temperature of the light source and the display panel can be effectively reduced, thereby improving the luminous efficiency and service life of the light source and the display panel. Stability and service life. On the other hand, since the heat energy can be quickly transmitted to the cold zone of the main frame by the high-efficiency heat-dissipating conductor and uniformly dispersed, the heat uniformity of the backlight module as a whole can be improved, and the structure in the backlight module can be prevented from being heated due to uneven heating. Thermal deformation.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first", "second" and the like mentioned in the specification or the claims are only used to name the components or distinguish different embodiments or ranges, and are not intended to limit the upper or lower limit of the number of components. .

10. . . Display panel module

12. . . Main frame

14. . . Backlight module

14a. . . Backplane

14b. . . Light guide

14c. . . light source

16. . . Display panel

18. . . control unit

18a. . . Timing control board

18b. . . Timing control board cover

20. . . Heat sink

twenty two. . . Thermal conduction unit

22a. . . First heat conducting member

22b. . . Second heat conducting member

twenty four. . . Front cover

26. . . Heat sink fin

32. . . Power module

34. . . Firmware control board

100. . . Display panel module

102. . . Backlight module

102a. . . LED light bar

102b. . . Backplane

104. . . Display panel

106. . . Main frame

108. . . Plastic frame

112. . . Timing control board

114. . . Timing control board cover

M. . . Aluminum block

P. . . Heat pipe

R. . . gap

FIG. 1 is a schematic diagram of a conventional display panel module.

2 is an exploded view of a display panel module in accordance with an embodiment of the present invention.

3 is an enlarged partial cross-sectional view of the display panel module of FIG. 2 after assembly.

4 is a schematic diagram of a heat dissipation assembly in accordance with an embodiment of the present invention.

10. . . Display panel module

12. . . Main frame

14. . . Backlight module

14a. . . Backplane

14b. . . Light guide

14c. . . light source

16. . . Display panel

18. . . control unit

18a. . . Timing control board

18b. . . Timing control board cover

twenty two. . . Thermal conduction unit

22a. . . First heat conducting member

22b. . . Second heat conducting member

twenty four. . . Front cover

Claims (11)

A display panel module includes: a main frame; a backlight module is disposed in the main frame and includes a back plate, a light guide plate and at least one light source, and a main frame and the back plate form a a display panel is disposed in the main frame and overlaps the backlight module; a control unit is disposed on one side of the main frame; and a heat conduction unit is disposed on the back plate and the main frame The heat conducting unit includes a first heat conducting member and a second heat conducting member, wherein the first heat conducting member contacts the back plate and the main frame respectively, and the second heat conducting member is connected to the first heat conducting member and distributed in the main frame Facing the side of the back panel. The display panel module of claim 1, wherein the control unit comprises a timing control board. The display panel module of claim 1, wherein the control unit covers a portion of the backboard, and the position of the heat conducting unit does not overlap the control unit. The display panel module of claim 1, wherein the first heat conducting member comprises at least one heat conducting block, and the second heat conducting member comprises at least one high efficiency heat dissipating conductor. The display panel module of claim 4, wherein the heat conducting block is an aluminum block or a copper block, and the high efficiency heat dissipation conductor is a heat pipe, a heat column or a heat spreader. The display panel module of claim 4, wherein the heat conducting unit further comprises at least one heat dissipating fin disposed on the high efficiency heat dissipating conductor. The display panel module of claim 1, wherein one end of the second heat conducting member is connected to the first heat conducting member and the other end of the second heat conducting member extends in a direction away from the first heat conducting member. Multiple different areas. The display panel module of claim 1, further comprising: a power module and a firmware control circuit board, all disposed on the main frame, wherein the position of the heat conducting unit does not overlap the power module and the Firmware control board. A heat dissipating component for a display panel module includes: a main frame; at least one heat conducting block fixed on the main frame, and one side of the heat conducting block is adapted to be attached to a back plate of a backlight module; At least one high-efficiency heat-dissipating conductor is connected to the heat-conducting block at one end and the other end of the high-efficiency heat-dissipating conductor is distributed in a plurality of different regions of the main frame in a direction away from the heat conducting block. The heat dissipating component for a display panel module according to claim 9, wherein the heat conducting block is an aluminum block or a copper block, and the high efficiency heat dissipating conductor is a heat pipe, a heat column or a heat spreader. The heat dissipating component for the display panel module of claim 9, further comprising: at least one heat dissipating fin disposed on the high efficiency heat dissipating conductor.