TWM320087U - Direct backlight module and liquid crystal display device - Google Patents

Description

M320087 VIII. New description: [New technical field] The liquid crystal display system using the backlight module relates to a direct type backlight type display device. [Prior Art] The backlight module is a key component of the liquid crystal display device, which can provide a light source with sufficient brightness to properly return the liquid (10) plate. The back wire group is roughly divided into two types according to the structure. As the size of the liquid crystal display device increases and the luminance demand increases, the side-test backlight = group cannot provide a sufficient position, so that the straight-down type of material is obtained, which can increase the brightness by increasing the number of lamps.曰Please-see m, FIG. 2 and FIG. 3, which are schematic diagrams of a prior art direct-type backlight module for a liquid crystal display device, a schematic cross-sectional view of the line, and FIG. 3 is a line along line m-El of FIG. Schematic diagram of the section. The backlight module 1 includes a frame body 110, a reflection sheet 120, and a plurality of lamps 130. The frame 11 includes a bottom plate lu and a light exiting opening 112. The reflective sheet 120 is disposed on the bottom plate hi. The light tube 13 is disposed above the reflective sheet 120. The lamp tube 13 has a straight tube portion 132 and an elbow portion 134, and the straight tube portion 132 is located below the light exit port 112. The light emitted from the straight tube portion 132 illuminates the liquid crystal through the light exit port 112. A panel (not shown) is shielded by the frame 1 . Since the brightness of the curved portion 134 is concentrated to affect the uniformity of the backlight module 100, the curved portion 134 is shielded by the frame 110 to avoid affecting the uniformity of the backlight module. However, the light-shielding structure completely loses the light emitted from the curved portion 134, and the light utilization efficiency is lowered. [New content] In view of this, it is necessary to provide a direct type backlight module with high light utilization efficiency. It is also necessary to provide a liquid crystal display device using the above-described direct type backlight module. 6 M320087 A direct type is an optical module, which comprises a plurality of tubes and a frame arranged in sequence. The frame body includes a plurality of side walls and a bottom plate, and the side walls extend into the frame body to form a plurality of mutually spaced spaces, and a light shielding piece is received in the frame body, and each of the light pipes has at least a pipe portion and a second one. The fistula portion is located between the corresponding one of the light shielding sheets and the bottom plate. A liquid crystal display device includes a liquid crystal display panel and a direct-type backlight module. The direct-lit backlight module includes a plurality of sequentially arranged lamps and a frame. The frame package ▲ includes a plurality of side walls and a bottom plate, and the side wall extends a plurality of mutually spaced light-shielding sheets into the frame, the lamp tubes are received in the frame body, and each of the lamps has at least a tube portion and At least one curved tube portion, each curved tube portion is located between a corresponding one of the light shielding sheets and the bottom plate. A direct-lit backlight module includes a frame body and a plurality of sequentially arranged light pipes, the frame body comprising a plurality of side walls and a bottom plate, the side wall extending a light shielding piece to the frame body, the light shielding piece surface setting a plurality of through holes; the lamp tube is received in the frame, each of the lamps has at least a straight pipe portion and at least a curved pipe portion, and the curved pipe portion is located between the light shielding plate and the bottom plate, and the through hole correspond. A liquid crystal display device includes a liquid crystal display panel and a direct-type backlight module. The direct-lit backlight module includes a plurality of sequentially arranged lamps and a frame body for housing the lamps. The frame body comprises a plurality of side walls and a bottom plate, the side wall projecting a light shielding piece to the frame body, the surface of the light shielding piece is provided with a plurality of through holes; the light tube is received in the frame body, and each of the light pipes has at least a permanent a portion and at least one elbow portion located between the light shielding sheet and the bottom plate and corresponding to the through hole. Compared with the prior art, the side wall of the frame of the backlight module and the liquid crystal display device of the present invention has the light shielding plate corresponding to the curved portion of the lamp tube, and the bending portion is located between the bottom plate and the light shielding plate, the bending One part of the light of the tube portion is shielded by the light shielding sheet, and the other part of the light is emitted from the gap between the light shielding sheets or the through hole of the light shielding sheet, and the light utilization efficiency of the direct type backlight module and the liquid crystal display device Higher. 7 M320087 [Embodiment] Please refer to FIG. 4 and FIG. 5 together. FIG. 4 is a schematic plan view of the first embodiment of the direct-lit backlight module. FIG. 5 is a partial cross-sectional view along line V-V of FIG. . The direct-lit backlight module 200 includes a frame 210, a reflective sheet 220, a plurality of sequentially arranged lamps 230, and an optical film set (not shown). The frame 210 includes a bottom plate 211 and four side walls 213. The reflection sheet 220 is disposed on the bottom plate. The lamp tube 230 is disposed above the reflection sheet 220. The optical film set and the frame 210 form a closed space for accommodating the lamp tube 230 and the reflection sheet 220, and the optical film group is used for φ to uniformize the emitted light. The tube 230 is U-shaped and includes a straight tube portion 232 and a curved tube portion 234. The side wall 213 horizontally protrudes from the inside of the frame body 210 to form a plurality of rectangular light shielding sheets 215 spaced apart from each other, corresponding to the curved tube portion 234, and located directly above the curved tube portion 234, and slightly larger than the curved tube The portion 234 and the rectangular shading sheets 215 are horizontally arranged on a straight line with a gap therebetween. The tube 230 can be a cold cathode ray tube (CCFL). The material of the frame 210 can be plastic. The straight tube portion 232 of the lamp tube 23 emits a portion of the light directly toward the optical film group; - another portion of the light is directed toward the reflection sheet 220, reflected by the reflection sheet 220, and then directed to the optical Diaphragm group. A portion of the light from the curved portion 234 of the tube 230 is directly directed toward the rectangular mask 215, and another portion of the light is emitted from the gap between the rectangular masks 215 toward the optical film set. . Compared with the prior art, the side wall 213 of the frame 210 of the direct type backlight module 2 has the rectangular light shielding plate 215 corresponding to the curved portion 234 of the lamp tube 230, and the curved portion 234 is located on the bottom plate 211 and There is a gap between the rectangular opaque sheets 215 and the rectangular visor 215, so that a part of the light of the curved portion 234 is shielded, and another part of the light is emitted from the gap, and the backlight is protected at 8 M320087. Under the premise of the uniformity of the module 200, the light utilization rate is improved, and the light utilization rate of the direct-type backlight backlight group is higher; in addition, the rectangular light-shielding film can be corresponding to the ♦ 穹 官 234 according to actual needs. The setting also saves the material of the frame 210 and is flexible in application. Please refer to FIG. 6, which is a plan view of a second embodiment of the present direct-lit backlight module. The direct type backlight module 300 and the direct type backlight module of the first embodiment are distinguished by the fact that the lamp tube 330 is of a W type, and includes a four straight tube portion 332 and a three curved tube portion 334, each of the curved tube portions - Corresponding to a rectangular light shielding sheet 315, there is a gap between the rectangular light shielding sheets 315 such that a part of the light of the * official portion 334 is shielded, and another part of the light is emitted from the gap. • Referring to FIG. 7, a plan view of a third embodiment of the present direct-lit backlight module is shown. The direct type backlight module 400 and the direct type backlight module of the first embodiment are different in that there is not only a gap between the rectangular light shielding sheets 415, and a plurality of through holes 416 are further disposed on the surface of each of the rectangular light shielding sheets 415, so that the curved portion Part of the light of the tube portion 434 is shielded, and another portion of the light is emitted from the gap and the circular through hole 416 to further improve light utilization. Please refer to FIG. 8 , which is a plan view of a fourth embodiment of the present invention. The direct type backlight module 5 〇〇 differs from the backlight module of the third embodiment only in that... The sheet 515 is a one-piece visor having a plurality of circular through holes 516 formed on the surface thereof so that part of the light of the knuckle portion 534 is shielded, and another portion of the light is emitted from the through hole 516. Please refer to FIG. 9 , which is a schematic diagram of the liquid crystal display device. The liquid crystal display device 2 includes a liquid crystal display panel 10 and a direct-type backlight module disposed adjacent to the liquid crystal display panel, and the 20, 5-liter direct-type backlight module 20 can adopt the direct type backlight described in any one of the above embodiments. Module. The direct-lit backlight module of the present invention can also be modified in various other ways. In the first embodiment, the shape of the (4) shading fairy 5 can be _, half-- or other irregular shape, and the rectangular sheet 215 can also be Horizontally arranged in a straight line, and interlaced with each other; 9 M320087: three embodiments t 'the rectangular visor 415 surface can also be set with other fermented through holes 'Gu Kong 416 can also be said or other money shape. &=上户" 'This creation has indeed met the requirements of the invention patent, New Zealand filed the patent application 22 S3 is only the preferred implementation of this creation, the scope of this creation is not ϋ ^ 'Cultivate the chopping skills The person's assistance in accordance with the spirit of this creation should be covered by the following patent applications. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view of a direct type of the prior art liquid crystal display device. Μ Figure 2 is a schematic cross-sectional view of Figure 1 along the u-n line. Figure 3 is a cross-sectional view of Figure 1 along the line [! Figure 4 is a schematic diagram of the plane of the creation of the child's light model (four). Figure 5 is a partial cross-sectional view taken along line V-V of Figure 4.

FIG. 6 is a schematic plan view showing a second embodiment of the present direct type backlight module. FIG. 7 is a plan view showing a third embodiment of the present invention. FIG. 8 is a plan view showing a fourth embodiment of the present direct type backlight module. Figure 9 is a schematic view of the liquid crystal display device of the present invention. [Main component symbol description] LCD display device backlight module 20, bottom plate 2 200, 300, 400, 500 211 rectangular light shielding plate 215, 315, 415, 515 lamp tube 230, 330 bending portion 234, 334, 434, 534 Liquid crystal display panel frame side wall reflection sheet straight tube portion through hole 10 210 213 220 232, 332 416, 516

Claims (1)

M320087 九 · · , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The lamp tube is arranged in the frame, and is housed in the frame body, each of: - (4) - the elbow portion, each elbow portion is located in a corresponding one of the shading ^ the shading sheet is the shading sheet, the shading sheet is 2. The first aspect of the present invention is directed to a straight-down type, wherein the side wall extends horizontally from the side wall. 3. The direct type backlight module as described in the scope of the patent application, wherein a plurality of through holes are provided in the surface. 4. The direct type backlight module of claim 1, wherein the rectangular type is rectangular. 5. The direct-type backlight module described in the above-mentioned patent/turning W/f, wherein the light-shielding sheet is 6. The direct-type back-domain group described in the patent scope correction, wherein the light-shielding sheet is semi-circular shape. 7. The direct-lit backlight module of claim 1, wherein the step-by-step includes a reflective sheet between the tube and the bottom plate. 8. The direct type backlight module of claim 1, further comprising an optical film set that forms an enclosed space with the frame. 9. The direct type backlight module of claim 1, wherein the tube is a cold cathode ray tube. A liquid crystal display device comprising: 11 M320087 a liquid crystal display panel; and a direct-lit backlight module adjacent to the 4-liquid daily display panel δ, comprising a frame and a plurality of lights arranged in sequence The tube body includes a plurality of side walls and a bottom plate, and the side wall protrudes into the frame body to form a plurality of mutually spaced light shielding sheets, and the light tube is received in the frame body, and each of the light tubes has at least a tube portion And at least one elbow portion, each elbow portion being located between the corresponding one of the light shielding sheets and the bottom plate. The liquid crystal display device according to claim 1, wherein the light shielding sheet extends horizontally from the side wall toward the casing. The liquid crystal display device according to the above aspect of the invention, wherein the surface of the light shielding sheet is provided with a plurality of through holes. The liquid crystal display device of claim 10, wherein the light shielding sheet has a rectangular shape. The liquid crystal display device of claim 1, wherein the light shielding sheet has a trapezoidal shape. The liquid crystal display device of claim 1, wherein the light shielding sheet is semicircular. The liquid crystal display device of claim 1, wherein the direct type backlight module further comprises a reflective sheet between the tube and the bottom plate. The liquid crystal display device of claim 10, wherein the direct type backlight module further comprises an optical film group, and the frame forms a closed space for housing the lamp. The liquid crystal display device of claim 10, wherein the tube is a cold cathode ray tube. 19) A direct type backlight module, comprising: 12 M320087 a frame body, comprising a plurality of side walls and a bottom plate, the side wall extending a light shielding sheet toward the frame body; the plurality of through holes are arranged on the surface of the light shielding sheet; and * plural The lamp tubes are arranged in the frame, and each of the lamps has at least a continuous portion, a central portion and at least one elbow portion, and the curved portion is located between the light shielding sheet and the bottom plate, and the through hole correspond. The direct type backlight module of claim 19, wherein the light shielding film, the side wall extends horizontally in the frame. The direct-lit backlight module of claim 19, wherein the through hole has a circular shape. The direct-lit backlight module of claim 19, wherein the through-hole is square. '23. A liquid crystal display device comprising: a liquid crystal display panel; and a neighboring The liquid crystal display panel is provided with a direct-type backlight module, which comprises a frame body and a plurality of sequentially arranged lamps. The frame body comprises a plurality of side walls and a bottom plate, and the side walls horizontally project a light shielding film into the frame body. a plurality of through holes are disposed on the surface of the light shielding sheet, and the light tube is received in the frame body, each of the light tubes has at least a tube portion and at least one curved tube portion, and the curved tube portion is located between the light shielding sheet and the bottom plate, and The liquid crystal display device according to claim 23, wherein the light shielding sheet extends horizontally from the side wall to the casing. 25·If the patent scope of the patent is 23rd The liquid crystal display device, wherein the through hole is circular. The liquid crystal display device of claim 23, wherein the through hole is square.