TWI398702B - Direct backlight module supporting apparatus and direct backlight module - Google Patents

Description

Direct type backlight module support device and direct type backlight module

The present invention relates to a backlight module supporting device, and more particularly to a supporting device for a direct-type backlight module.

The backlight module is a light source of a liquid crystal display, and can be classified into a side light type and a direct type according to the light source structure. With the increasing popularity of LCD TVs, direct-lit backlight modules have become the focus of development at this stage in response to the trend of large-scale panels. The direct-lit backlight module lamp unit is located below the module to directly illuminate the light. A support column is often disposed between the bottom plate of the backlight module and the diffusion plate to support the diffusion plate upward. If the cross-sectional area of the top of the support column is too large, it will easily produce dark spots on the display panel. Conversely, if the cross-sectional area of the top end of the support column is too small, it will easily cause scratching on the supported optical film.

Therefore, how to design a new support column, so that the support column will not produce dark spots on the display panel, and will not cause scratches on the supported optical film, is an urgent problem to be solved in the industry.

Therefore, the object of the present invention is to provide a direct-type backlight module supporting device, comprising: a base and a body, the system is a cylinder and is located above the base; the body has a mouth, extending downward from the upper end of the body, so that A backlight is projected through the slit to the top of the direct type backlight module support device.

Another object of the present invention is to provide a direct type backlight module support The device comprises: a base and a body, the system is a cylinder and is located above the base; the body has a light guiding channel, the light guiding channel has a first opening on the top of the body, and the second opening is on a side of the body; The second opening enters the light guiding channel and is projected from the first opening to the top of the direct type backlight module supporting device.

Another object of the present invention is to provide a direct type backlight module comprising: a back plate, an optical film, at least one light source, and at least one direct type backlight module supporting device. The light source is disposed on the back plate; at least one direct type backlight module supporting device is disposed between the back plate and the optical film, and comprises: a base and a body, the base is disposed on the back plate, and the system is a column The body is located above the base; the body has a slit extending downward from the upper end of the body, so that the backlight is projected through the slit to the top of the direct type backlight module supporting device. The upper end of the body of the at least one direct type backlight module support device supports the optical film.

Another object of the present invention is to provide a direct type backlight module comprising: a back plate, an optical film, at least one light source, and at least one direct type backlight module supporting device. The light source is positioned on the back plate; at least the underlying backlight module supporting device is disposed between the back plate and the optical film, and comprises: a base and a body, the base is positioned on the back plate, and the system is a column The body has a light guiding channel, the light guiding channel has a first opening on the top of the body, and the second opening is on the side of the body; the backlight enters the light guiding channel through the second opening and is projected from the first opening to Directly above the backlight module support device. At least the upper end of the body of the backlight assembly support device supports the optical film.

The invention has the advantages of being able to support the device with a direct type backlight module In addition to providing a support function for the direct-lit backlight module, the backlight can be projected onto the support device of the direct-lit backlight module to avoid the occurrence of dark spots, and the above purpose can be easily achieved.

The object of the present invention, as well as the technical means and embodiments of the present invention, will be apparent to those skilled in the art in view of the appended claims.

Please refer to FIG. 1 , which is an exploded view of the backlight module 1 of the first embodiment of the present invention. The direct type backlight module 1 includes a back plate 10, four light sources 11, a base 121, a direct type backlight module supporting device 12, and an optical film 14. The backlight module supporting device 12 includes a base 121 and a plurality of supporting device bodies 13. The base 121 has a snapping structure (not shown) for fixing to the backing plate 10. In the present embodiment, the light source 11 is a lamp tube 11. In other embodiments, other light-emitting elements such as LEDs can be used as the light source. The lamp support 120 is fixed to the back plate 10 for receiving and fixing the lamp tube 11. The lamp support 120 is not necessary when the length of the tube is short or when other light-emitting elements such as LEDs are used as the light source. In the present embodiment, the lamp support member 120 clamps both ends of the lamp tube 11 for fixing. The direct-type backlight module support device body 13 is formed on the base 121. In one embodiment, the direct-type backlight module support device body 13, the base 121, and the lamp support member 120 are integrally formed. The optical film 14 is located at a distance above the susceptor 121, and the upper end of the direct-type backlight module supporting device body 13 supports the optical film 14. In the present embodiment, the optical film 14 is a diffusion plate 14. The number of various elements described in this embodiment is merely illustrative of the situation illustrated in FIG. 1, and does not limit the number of various components in practical applications. In practical applications, the number of components such as the backlight module supporting device, the light source, and the lamp support can be adjusted according to factors such as the size of the backlight module.

2A is a perspective view of the body 201 of the direct type backlight module supporting device according to an embodiment of the present invention. The body 201 is a cylinder and is located above the base (not shown). In this embodiment, the body 201 is a conical cylinder. In other embodiments, the body 201 can be a combination of a cylinder, a square column, a triangular cone, an inverted cone, or even a different cylinder (for example, the lower half is The upper part of the cylinder is a square column and so on, but not limited by the conical column. The body 201 has a slit 202 extending downward from the upper end of the body 201 to project a backlight 203 through the slit 202 onto the direct-type backlight module supporting device 20. FIG. 2B is a perspective view of the direct type backlight module supporting device body 211 according to another embodiment of the present invention. The difference between the direct type backlight module supporting device body 201 of FIG. 2A is that the slit 202 of FIG. 2A is half-cut along the middle of one of the top cross-sections of the body 201, and the slit 212 of FIG. 2B is A corner portion of the top cross section of the body 211 is formed by excavating. In other embodiments, as shown in FIG. 2C, the slit 222 may also be formed as a half-cut in the middle of one of the cross-sections of the top end of the body 221, and then cut in a vertical direction. A greater amount of backlight can be projected onto the direct-type backlight module support body 221.

Referring to FIG. 2D and FIG. 2E, respectively, a perspective view and a side cross-sectional view of the direct-type backlight module supporting device body 231 in another embodiment of the present invention. The direct type backlight module supporting device body 231 is more The light guide channel 236 has a first opening 233 and a second opening 234. The first opening 233 is connected to the slit 232, and the second opening 234 is formed at the side of the body 231. In the embodiment, the light guiding channel 236 is further formed with a reflecting member 235 for allowing the backlight 237 to enter the light guiding channel 236 via the second opening 234, and the reflective member 235 is more concentratedly cut from the first opening 233 through the slit 235. The 232 is projected onto the upper body of the direct type backlight module support device 231. 2F and 2G are perspective and side cross-sectional views of the body 241 of the direct type backlight module supporting device according to still another embodiment of the present invention. Different from the previous embodiment, the body 241 of the direct type backlight module supporting device has a groove 246 and a light guiding channel 245. The groove 246 is formed on the side of the body 241, which is different from the manner in which the light guiding channel directly penetrates the body in the previous embodiment. The light guiding channel 245 has a first opening 243 and a second opening 244. The first opening 243 is connected to the slit 242, and the second opening 244 is substantially connected to the groove 246. The recess 246 includes a slope 247 for the backlight 248 to be incident on the light guide channel 245 through the recess 247, and further projected from the first opening 243 through the slit 242 to the direct backlight module support. Above the device body 241. 2D and 2F are different embodiments of the direct-type backlight module support device 20 of FIG. 2A, but can also be supported by the direct-type backlight module of FIG. 2B or 2C. The structures of the devices 21 and 22 form a light guiding channel, a groove, and the like, and the backlight is collectively projected onto the direct-type backlight module supporting device bodies 211 and 221 .

FIG. 3A is a perspective view of the direct type backlight module supporting device body 301 according to another embodiment of the present invention. The body 301 is a cylinder, located Above the pedestal (not shown). In other embodiments, the body 301 can be a cone, a square column, a triangular cone column, an inverted cone column or even a combination of different cylinders (for example, the lower half is a square column with a square column), and is not a cylinder. Limited. The body 301 has a light guiding channel 302. The light guiding channel 302 has a first opening 303 and a second opening 304. The first opening 303 is directly open at the top of the body 301, and the second opening 304 is located at the side of the body 301. The backlight 305 enters the light guiding channel 302 via the second opening 304 and is projected from the first opening 303 onto the direct type backlight module supporting device 30. FIG. 3B is a perspective view of the direct type backlight module supporting device body 311 according to another embodiment of the present invention. The direct type backlight module supporting device body 311 is an inverted tapered column. The body 311 has a light guiding channel 312. The light guiding channel 312 has a first opening 313 and a second opening 314. The first opening 313 is directly open to the top of the body 311, and the second opening 314 is located at the side of the body 311. The reflector 315 is formed in the light guiding channel 312, so that the backlight 316 can be more concentratedly projected onto the direct type backlight module supporting device body 311. 3C and 3D are respectively a perspective view and a side cross-sectional view of the direct-type backlight module supporting device body 321 according to still another embodiment of the present invention. The body 321 is a square cone having a groove 326 and a light guiding channel 322, wherein the groove 326 is formed at a side of the body 321 . The light guiding channel 322 has a first opening 323 and a second opening 324. The first opening 323 is directly open to the top of the body 321 , and the second opening 324 is substantially connected to the groove 326 . The recess 326 includes a slope 327 for the backlight 328 to be incident on the light guiding channel 322 through the inclined surface 327 and further projected from the first opening 323 to the direct backlight module supporting device body 321 . Above.

The above-mentioned direct type backlight module supporting device not only provides a supporting function of the direct type backlight module, but also enables the backlight to be projected above the direct type backlight module supporting device. The reflection member or the groove bevel can be arranged to concentrate the projection of the backlight while avoiding the occurrence of dark spots.

Although the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

1‧‧‧Direct type backlight module

10‧‧‧ Backboard

11‧‧‧Light source

12‧‧‧Direct type backlight module support device

120‧‧‧Light source support

121‧‧‧Base

13‧‧‧Direct type backlight module support device Ontology

14‧‧‧Optical diaphragm

20‧‧‧Direct type backlight module support device

201, 211, 221, 231, 241‧‧‧ ontology

202, 212, 222, 232, 242‧‧ cuts

233, 243‧‧‧ first opening

234, 244‧‧‧ second opening

235‧‧‧reflector

236, 245‧‧ ‧ light guide channel

237, 248‧‧‧ backlight

246‧‧‧ Groove

247‧‧‧Bevel

30‧‧‧Direct type backlight module support device

301, 311, 321‧‧‧ ontology

302, 312, 322‧‧‧ light guide channels

303, 313, 323‧‧‧ first opening

304, 314, 324‧‧‧ second opening

305, 316, 328‧‧‧ backlight

315‧‧‧reflector

326‧‧‧ Groove

327‧‧‧Bevel

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. FIG. 2A to FIG. 2G are respectively a perspective view of a body of a direct type backlight module supporting device according to an embodiment of the present invention; and FIGS. 3A to 3D are respectively an embodiment of the present invention; A perspective view of the body of the direct type backlight module supporting device.

231‧‧‧Direct type backlight module support

230‧‧‧Base Body

232‧‧‧ incision

233‧‧‧ first opening

234‧‧‧second opening

235‧‧‧reflector

236‧‧‧Light guide

237‧‧‧ Backlight

Claims (23)

A direct-type backlight module supporting device comprises: a base; and a body, which is a cylinder, is located above the base; the body has a mouth, extending downward from the upper end of the body, so that a backlight is borrowed Projecting from the slit to the direct-type backlight module supporting device; wherein the body further has a light guiding passage having a first opening connected to the slit and a second opening at a side of the body The backlight enters the light guiding channel through the second opening and is projected from the first opening through the slit to the direct type backlight module supporting device. The direct-type backlight module supporting device of claim 1, wherein a reflective member is further formed in the light guiding channel, wherein the backlight incident through the light guiding channel is concentrated through the first opening and the The slit is projected onto the direct type backlight module support device. The direct-type backlight module supporting device according to claim 1, wherein the body further has a groove formed on a side of the body, and the second opening is substantially connected to the concave portion. a groove, wherein the groove is used to project the backlight to the light guiding channel through the groove, and further projected from the first opening through the slit to the direct type backlight module supporting device. Direct-type backlight module support as described in item 3 of the patent application scope The device, wherein the groove has a slope for collectively projecting the backlight to the light guiding channel. The direct type backlight module supporting device according to claim 1, wherein the column system is a cylinder, a square column, a cone column, an inverted cone column or a combination of different columns. A direct type backlight module supporting device comprises: a base; and a body, which is a cylinder, is located above the base; the body has a light guiding channel, and the light guiding channel has a top portion of the body a first opening and a second opening on the side of the body; a backlight enters the light guiding channel through the second opening and is projected from the first opening to the direct type backlight module supporting device. The direct-lit backlight module supporting device of claim 6, wherein a reflective member is further formed in the light guiding channel, so that the backlight incident through the light guiding channel is concentrated to be projected through the first opening to The direct type backlight module is supported above the device. The direct-type backlight module supporting device of claim 6, wherein the body further has a groove formed on a side of the body, the second opening is substantially correspondingly connected to the concave a groove, wherein the groove is used to project the backlight to the light guiding channel through the groove, further The first opening is projected onto the direct type backlight module supporting device. The direct type backlight module supporting device of claim 8, wherein the groove has a slope for collectively projecting the backlight to the light guiding channel. The direct type backlight module supporting device according to claim 6, wherein the column system is a cylinder, a square column, a cone column, an inverted cone column or a combination of different columns. A direct type backlight module comprises: a back plate; an optical film; at least one light source is positioned on the back plate; at least the underlying backlight module supporting device is disposed on the back plate and the optical film Between the two, the base is disposed on the back plate, and the body is a cylinder on the base; the body has a light guiding channel, and the light guiding channel has a first opening And a second opening, a backlight enters the light guiding channel through the second opening and is projected from the first opening onto the supporting device, the body further has a slit extending downward from the upper end of the body, so that The backlight is projected onto the direct-type backlight module supporting device by the slit; the upper end of the body of the at least the following backlight module supporting device supports the optical film. The direct-type backlight module of claim 11, further comprising: at least one light source support member fixed to the back plate for receiving and positioning the at least one light source; the at least one light source support member and The at least the following backlight module support device is integrally formed. The direct type backlight module of claim 11, wherein the first opening is connected to the slit, the second opening is located at a side of the body; the backlight enters the light guiding channel via the second opening The first opening is projected through the slit to the top of the direct type backlight module supporting device. The direct-lit backlight module of claim 13 , wherein a reflective member is further formed in the light guiding channel, wherein the backlight incident through the light guiding channel is concentrated and projected through the first opening and the slit Up to the direct-type backlight module support device. The direct-lit backlight module of claim 11, wherein the body further has a recess, the recess is formed on a side of the body, and the second opening is substantially correspondingly connected to the recess. The recess is configured to cause the backlight to be projected to the light guiding channel through the groove, and further projected from the first opening through the slit to the direct type backlight module supporting device. The direct type backlight module of claim 15, wherein the groove has a slope for collectively projecting the backlight to the light guiding channel. The direct type backlight module of claim 11, wherein the column system is a cylinder, a square column, a cone column, an inverted cone column or a combination of different columns. A direct type backlight module comprises: a back plate; an optical film; at least one light source is positioned on the back plate; at least the underlying backlight module supporting device is disposed on the back plate and the optical film Between the two, the base is disposed on the back plate, and the body is a cylinder on the base; the body has a light guiding channel, and the light guiding channel has a first opening A second opening is formed on a side of the body; a backlight enters the light guiding channel through the second opening and is projected from the first opening to the direct type backlight module supporting device. For example, the direct type backlight module described in claim 18 of the patent application further includes: The at least one light source support member is fixed on the back plate for receiving and positioning the at least one light source; the at least one light source support member and the at least the underlying backlight module support device are integrally formed. The direct-lit backlight module of claim 18, wherein a reflective member is further formed in the light guiding channel, wherein the backlight incident through the light guiding channel is concentrated to be projected to the straight through the first opening. Above the backlight module support device. The direct-type backlight module of claim 18, wherein the body further has a recess, the recess is formed at a side of the body, and the second opening is substantially correspondingly connected to the recess. The recess is configured to project the backlight to the light guide channel through the recess, and further project from the first opening to the direct backlight module support device. The direct type backlight module of claim 21, wherein the groove has a slope for collectively projecting the backlight to the light guiding channel. The direct type backlight module of claim 18, wherein the column system is a cylinder, a square column, a cone column, an inverted cone column or a combination of different columns.