CN102053394A - Liquid crystal display device and assembling method thereof - Google Patents

Abstract

A liquid crystal display device and an assembling method thereof. The liquid crystal display device comprises a rear cover, a signal control module, a plurality of line light sources, a pair of loaders, a plurality of optical films, a display panel and a front frame. The rear cover is provided with a first side and a second side which are opposite. The carriers are arranged on the first side of the back cover, and the carriers and the back cover clamp the linear light source, wherein each carrier is provided with a plurality of openings and a step-shaped bearing structure. The optical film and the display panel are sequentially arranged on the step-shaped bearing structure, and the front frame and the rear cover jointly clamp the display panel. The signal control module is arranged on the second side of the rear cover. The liquid crystal display device using the integrated rear cover can effectively reduce the using number of moulds during assembly so as to reduce the cost, simplify the production flow and improve the assembly efficiency.

Description

Liquid crystal display device and assembly method thereof

technical field

The present invention relates to a display device and its assembly method, and in particular to a liquid crystal display device and its assembly method.

Background technique

The multimedia technology in today's society is quite developed, most of which benefit from the progress of semiconductor elements or display devices. As far as display devices are concerned, liquid crystal display devices (Liquid Crystal Display, LCD) with superior characteristics such as high image quality, good space utilization efficiency, low power consumption, and no radiation have gradually become the mainstream of the market. Generally speaking, a liquid crystal display device is composed of a liquid crystal display panel, a backlight module, and a frame.

FIG. 1 is an exploded perspective schematic view of a conventional liquid crystal display device. Please refer to FIG. 1 , a conventional liquid crystal display device 100 includes a front frame 120 of the display device, which is an exterior part of the front of the liquid crystal display device 100, and is generally equipped with elements such as operation buttons for operating the liquid crystal display device 100, and a rear cover 122 of the display device, which is The rear exterior part of the liquid crystal display device 100 is generally configured with a support member to support the liquid crystal display device on a plane or hang on a wall. And the display module 110 disposed between the rear cover 122 of the display device and the front frame 120 of the display device. Here, the display module 110 includes a panel module front frame 112, a panel module rear cover 114, and a backlight module 116 and a liquid crystal display panel 118 disposed between the panel module front frame 112 and the panel module rear cover 114, wherein the panel module rear cover The main purpose of 114 is to accommodate the backlight module 116 and the liquid crystal display panel 118 , and the backlight module 116 further includes a light source and an optical film. In addition, a transfer piece 130 is included between the circuit protection cover 124 and the panel module rear cover 114 to lock components such as the signal control circuit board 126 and the power supply circuit board 128 in the liquid crystal display device 100 .

Generally speaking, the assembly process of the liquid crystal display device 100 is that the backlight module 116 , the liquid crystal display panel 118 , the panel module front frame 112 , and the panel module rear cover 114 are assembled into the display module 110 by the panel factory. That is, the front frame 112 of the panel module and the back cover 114 of the panel module jointly hold the backlight module 116 and the liquid crystal display panel 118 to form the display module 110 . Afterwards, the panel factory transports the assembled display module 110 to the system factory, and uses the transfer piece 130 to lock the signal control circuit board 126 and the power circuit board 128 on the display module 110 . Next, continue to assemble components such as the front frame 120 of the display device, the rear cover 122 of the display device, and the protective cover 124 of the circuit device to form the liquid crystal display device 100 .

Under the above assembly process, the panel factory must first assemble the display module 110 . Next, the assembled display module 110 is delivered to the system factory to complete the assembly of the liquid crystal display device 100 . In addition, in order to lock the signal control circuit board 126 and the power circuit board 128 on the display module 110 , it is necessary to add a transfer member 130 .

In this way, at least four or more components such as the front frame and the rear cover can be assembled into the liquid crystal display device 100 . Therefore, the conventional liquid crystal display device 100 needs to use a large number of molds to manufacture multiple front frames and rear covers, and the assembly process is quite complicated. Therefore, the assembly cost of the liquid crystal display device 100 cannot be reduced, and the assembly efficiency cannot be effectively improved.

Contents of the invention

The present invention proposes a liquid crystal display device, which directly integrates the rear cover of the display device and the rear cover of the panel module to form a new integrated rear cover, so as to simplify the component design of the liquid crystal display device.

The invention provides an assembly method of a liquid crystal display device, so as to reduce the assembly cost, simplify the production process and effectively improve the assembly efficiency.

The invention provides a liquid crystal display device, which includes a rear cover, a signal control module, a light source, a pair of carriers, a plurality of optical films, a display panel and a front frame. The back cover includes a main board and a first surrounding wall. The main board has an inner side and an outer side, and the first surrounding wall vertically protrudes from the first side of the main board.

Here, the signal control module is arranged outside the main board. The line light sources are arranged inside, and the light sources can be line light sources, and are substantially parallel to each other, and each line light source has two opposite ends. The carriers are arranged on the first side and facing each other, wherein each carrier has a plurality of openings and a first stepped carrying structure, and the opening faces the main board to accommodate the end of the line light source, and the first stepped carrying structure is located on the carrying the side away from the motherboard.

In addition, the optical film is disposed on the first stepped carrying structure of the carrier and a partial area of the first surrounding wall. The display panel is disposed on the first stepped carrying structure of the carrier and a partial area of the first surrounding wall, and the display panel is located on a side of the optical film away from the main board. The front frame is locked on the back cover and holds the display panel and the carrier together with the first surrounding wall.

In an embodiment of the present invention, the above-mentioned main board has a rectangular boss and a plurality of wire accommodating parts, which are located in the area surrounded by the first surrounding wall, and the wire accommodating parts are located on opposite sides of the rectangular boss and Corresponds to the end of the line light source. In addition, the liquid crystal display device further includes at least one reflective sheet, which is arranged on the rectangular boss and at least covers the wire accommodating portion. Furthermore, the rectangular boss forms a groove on the second side of the main board, and the signal control module is locked in the groove, for example. At this time, the liquid crystal display device may further include a second surrounding wall, which surrounds the edge of the groove. The second surrounding wall has, for example, a plurality of cooling holes.

In an embodiment of the present invention, the above-mentioned liquid crystal display device further includes a wall-mounted back cover, which is used to cover the signal control module of the main board. In addition, the liquid crystal display device also includes a foot seat, which is arranged on the side of the wall-mounted back cover away from the front frame. The foot base and the wall-mounted back cover can be integrally formed.

In one embodiment of the present invention, the above-mentioned first surrounding wall has two protruding platforms, so that the carrier is disposed on the two protruding platforms, and the end of the line light source is sandwiched between the carrier and the two protruding platforms .

In an embodiment of the present invention, the above-mentioned first stepped bearing structure of each carrier has a first step and a second step. The first level is relatively close to the main board, the optical film is placed on the first level, and the display panel is placed on the second level.

In an embodiment of the present invention, the above-mentioned first surrounding wall has a plurality of second stepped supporting structures of parallel line light sources, and the second stepped supporting structures and the first stepped supporting structures jointly carry the optical film and display panel. Actually, each second stepped bearing structure may have a first step and a second step. The first level is relatively close to the main board, the optical film is placed on the first level, and the display panel is placed on the second level.

In an embodiment of the present invention, the above liquid crystal display device further includes a plurality of supporting structures. The support structure is arranged in the rectangular boss to support the line light source and the optical film. The support structure can be integrally formed with the back cover. Specifically, the supporting structure includes a plurality of lamp tube clamps and a plurality of supporting columns, wherein the lamp tubes clamp the line light source, and the supporting columns support the optical film.

In an embodiment of the present invention, the above-mentioned line light source is a plurality of CCFL tubes.

In an embodiment of the present invention, the material of the above-mentioned back cover is a reflective material for reflecting the light of the linear light source.

In an embodiment of the present invention, the above-mentioned display panel has a liquid crystal display panel and a control circuit board, and the control circuit board is bent from an edge of the liquid crystal display panel to the outside of the first surrounding wall, and is fixedly locked at the second surrounding wall. One around the wall.

In an embodiment of the present invention, the above-mentioned liquid crystal display device further includes at least one shock-absorbing member disposed between the display panel and the front frame. For example, the shock-absorbing member is a sponge strip, a plastic strip or a rubber strip.

The present invention further provides a method for assembling a liquid crystal display device, the steps of which are as follows. Firstly, a rear cover is provided, which includes a main board and a first surrounding wall. The main board has a first side and a second side opposite to each other, and the first surrounding wall protrudes vertically from the first side of the main board. Next, a plurality of line light sources are disposed on the first side of the main board, wherein the line light sources are substantially parallel to each other and each line light source has two opposite ends.

Subsequently, a pair of carriers is used to pinch the line light source between the back cover and the carrier. Actually, the carriers are opposite to each other, and each carrier has a plurality of openings and a first stepped carrier structure. In addition, the opening faces the main board to accommodate the end of the line light source, and the first stepped carrying structure is located at an example of the carrier away from the main board.

Afterwards, a plurality of optical films and a display panel are arranged on the first stepped carrying structure of the carrier and a partial area of the first surrounding wall. Wherein, the display panel is located on the side of the optical film away from the main board. Then, a front frame is locked on the back cover, and the front frame and the first surrounding wall hold the display panel and the carrier together. Subsequently, a signal control module is locked on the second side of the main board.

In an embodiment of the present invention, before arranging the plurality of line light sources on the first side of the main board, at least one reflective sheet is further arranged on the first side of the main board.

In an embodiment of the present invention, after the signal control module is locked on the second side of the main board, a wall-mounted back cover is used to cover the signal control module of the main board. In addition, after covering the signal control module with a wall-mounted back cover, a foot can also be locked on the side of the wall-mounted back cover away from the front frame.

In an embodiment of the present invention, in the above-mentioned method for assembling a liquid crystal display device, the first stepped carrying structure of each carrier has a first step and a second step, and the first step is relatively close to the main board. At this time, the method of configuring the optical film and the display panel includes placing the optical film on the first level, and placing the display panel on the second level.

In one embodiment of the present invention, the above-mentioned method for assembling a liquid crystal display device, wherein the first surrounding wall has a plurality of second stepped carrying structures of parallel line light sources, and the second stepped carrying structure has a first step and A second stage, and the first stage is relatively close to the main board. At this time, the method of configuring the optical film and the display panel includes placing the optical film on the first level, and placing the display panel on the second level.

The present invention further provides a liquid crystal display device, which includes a rear cover, a signal control module, at least one line of light source and a front frame. The back cover has a concave structure and a convex structure, and the back cover has a first side and a second side opposite to each other. The concave structure is a boss located on the first side of the back cover, and the boss has multiple supporting structures. The inner convex structure is a groove and is located on the second side of the back cover. Here, the signal control module is arranged in the groove. The above-mentioned line light sources are arranged on the boss, are substantially parallel to each other, and have two opposite ends. The front frame is locked on the back cover and holds the display panel and the carrier together with the back cover.

In an embodiment of the present invention, the above-mentioned rear cover further has a first surrounding wall. The first surrounding wall surrounds the boss to form a plurality of wire accommodating portions, and the wire accommodating portions are located on opposite sides of the boss and correspond to the ends of the linear light source.

In an embodiment of the present invention, the above liquid crystal display device further includes a wall-mounted back cover for covering the signal control module.

In an embodiment of the present invention, the above-mentioned liquid crystal display device further includes a foot, which is disposed on a side of the wall-mounted back cover away from the front frame.

In an embodiment of the present invention, the above-mentioned foot base and the wall-mounted back cover are integrally formed.

In an embodiment of the present invention, the above-mentioned liquid crystal display device further includes a pair of carriers disposed on the first side and facing each other. Here, each carrier has a plurality of openings and a first stepped carrying structure. The opening faces the back cover to accommodate the end of the linear light source, and the first stepped carrying structure is located on a side of the carrier away from the back cover. In addition, the above-mentioned first stepped carrying structure of each carrier has a first step and a second step, and the first step is relatively close to the rear cover. Here, the optical film is placed on the first step, and the display panel placed on the second tier.

In an embodiment of the present invention, the above-mentioned support structure and the boss are integrally formed.

In an embodiment of the present invention, the above-mentioned supporting structure includes a plurality of lamp tube clips and a plurality of supporting columns. The lamp tube clamp clamps the line light source, and the support column supports the optical film.

In an embodiment of the present invention, the above-mentioned line light source is a plurality of CCFL tubes.

In an embodiment of the present invention, the material of the above-mentioned back cover is a reflective material, which is used to reflect the light of the above-mentioned line light source.

In an embodiment of the present invention, the above-mentioned liquid crystal display device further includes at least one shock-absorbing member disposed between the display panel and the front frame.

In an embodiment of the present invention, the above-mentioned shock-absorbing member is a sponge strip, a plastic strip or a rubber strip.

In an embodiment of the present invention, the above-mentioned liquid crystal display device further includes at least one reflective sheet disposed on the boss and covering at least the above-mentioned wire accommodating portion.

In an embodiment of the present invention, the above-mentioned liquid crystal display device further includes a second surrounding wall surrounding the edge of the groove.

In an embodiment of the present invention, the above-mentioned second surrounding wall has a plurality of cooling holes.

In one embodiment of the present invention, the above-mentioned first surrounding wall has two protruding platforms, so that the carrier is arranged on the two protruding platforms, and the end of the above-mentioned line light source is clamped between the carrier and the two protruding platforms. between.

In an embodiment of the present invention, the above-mentioned first surrounding wall has a plurality of second stepped supporting structures parallel to the above-mentioned line light source. The second stepped carrying structure and the first stepped carrying structure jointly carry the optical film and the display panel.

In an embodiment of the present invention, each of the above-mentioned second stepped bearing structures has a first step and a second step, wherein the first step is relatively close to the rear cover. The optical film is placed on the first level, and the display panel is placed on the second level.

In an embodiment of the present invention, the above-mentioned display panel has a liquid crystal display panel and a control circuit board, and the control circuit board is bent from an edge of the liquid crystal display panel to the outside of the first surrounding wall, and is fixedly locked at the second surrounding wall. One around the wall.

Based on the above, the rear cover of the liquid crystal display device of the present invention integrates the functions of the rear cover of the display device and the rear cover of the panel module, that is to say, the rear cover of the present invention can be used to lock the control circuit module or to hold the liquid crystal display module. In this way, the liquid crystal display device using the integrated rear cover of the present invention requires fewer components during assembly, which can effectively reduce assembly costs, simplify production processes, and effectively improve assembly efficiency.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is an exploded perspective schematic view of a conventional liquid crystal display device.

FIG. 2 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention.

3A and 3B are schematic views of one side of the rear cover of the liquid crystal display device of FIG. 2 .

FIG. 4 is a partially enlarged schematic view of a carrier according to an embodiment of the present invention.

5A and 5B are schematic views of the other side of the rear cover of the liquid crystal display device of FIG. 2 .

FIG. 6 is an exploded perspective view of a reflection sheet and a back cover according to another embodiment of the present invention.

Description of main component symbols

100, 200: liquid crystal display device

110: display module

112: Front frame of panel module

114: Panel module rear cover

116: Backlight module

118: Liquid crystal display panel

120: front frame of the display device

122: Display device back cover

124: Circuit device protection cover

126: Signal control circuit board

128: Power circuit board

130: Transfer

210: back cover

212: Motherboard

214: First Surrounding Wall

216: Rectangular Boss

218: Wire accommodation part

220: Groove

222a, 222b: protruding platform

224: Second Surrounding Wall

230: line light source, cold cathode fluorescent lamp group

240: Carrier

250: Optical film

252: Diffusion plate

254: Diffuser

260: display panel

262: LCD display panel

264: control circuit board

270: front frame

280: protective glass

290, 290': reflector

300: locking member

310: Signal control module

320: wall-mounted back cover

330: tripod

PCB: image processing and signal control circuit board

INV: Power Inverter

H1: through hole

H2, H3: cooling holes

HY: high voltage end

LV: Low voltage end

U: lamp clamp

M: open

L1, L2: Ladder bearing structure

L11, L21: first stage

L12, L22: second stage

D: Direction

P: support column

S1: First side

S2: second side

Detailed ways

FIG. 2 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present invention. Referring to FIG. 2, the liquid crystal display device 200 includes a signal control module 310, a rear cover 210, a plurality of line light sources 230, a pair of carriers 240, a plurality of optical films 250, a display panel 260 and a stacked in sequence. Front frame 270 and other components.

In the liquid crystal display device 200 of this embodiment, the linear light source 230 , the carrier 240 , the optical film 250 , the display panel 260 and the front frame 270 are sequentially assembled on one side of the rear cover 210 . Moreover, the signal control module 310 is disposed on the other side of the rear cover 210 . In addition, the rear cover 210 is, for example, an integrally formed plastic shell. Compared with the traditional liquid crystal display device 100 which requires at least four front frames and rear covers in total to assemble the liquid crystal display device 100, the rear cover 210 of this embodiment directly integrates the rear cover 122 of the display device and the rear cover 114 of the panel module. The functions can effectively reduce the number of components used. In addition, the assembly method of this embodiment is also relatively simplified.

In other words, in addition to the design of the locking control signal module 310 , the rear cover 210 of this embodiment also provides related structural designs for configuring components such as the line light source 230 , the optical film 250 , and the display panel 260 .

Overall, the liquid crystal display device 200 of this embodiment is, for example, a liquid crystal television. The liquid crystal display device 200 of this embodiment may also include a wall-mounted back cover 320, which covers the signal control module 310 on the back cover 210, wherein the signal control module 310 may include a power module and an image processing module, and the power module may further include Power conversion mechanisms, such as power conversion modules that convert AC to DC or DC to AC. For example, the signal control module 310 can be a combination of components such as an image processing circuit board (video PCB), a power circuit board (power PCB) and a power converter (inverter PCB), and the power circuit board (power PCB) and power converter (inverter PCB) can also be configured on the same circuit board, which also has the advantage of saving space. When the signal control module 310 fails, the wall-mounted back cover 320 can be directly removed to repair the signal control module 310 , thereby increasing the convenience of using the liquid crystal display device 200 . In essence, the liquid crystal display device 200 further includes a stand 330 which is locked on the side of the wall-mounted back cover 320 away from the front frame 270 . Of course, when the liquid crystal display device 200 is actually used, the liquid crystal display device 200 can be hung on the wall or assembled at a specific location according to the needs of the user. In addition, in other embodiments, the wall-mounted back cover 320 and the stand 330 may also be integrally formed.

In this embodiment, the display panel 260 includes, for example, a liquid crystal display panel 262 and a control circuit board 264 . When assembling the liquid crystal display device 200 , the display panel 262 may be sandwiched between the front frame 260 and the carrier 240 , and the control circuit board 264 is bent from an edge of the display panel 262 to the outside of the rear cover 210 . That is to say, the control circuit board 264 is bent to the side of the rear cover 210 and locked thereon. Certainly, the design of the control circuit board 264 in this embodiment is only for example, and in other embodiments, the display panel 260 does not necessarily have the control circuit board 264 .

In addition, the liquid crystal display device 200 may further include at least one shock-absorbing member (not shown), which is disposed between the display panel 260 and the front frame 270 . That is to say, a shock-absorbing member (not shown) may be configured on the edge of the front frame 270 contacting the display panel 260 to prevent the display panel 260 from being damaged due to collision between the display panel 260 and the front frame 270 . In addition, the configuration of the shock-absorbing member (not shown) can make the display panel 260 more firmly held between the front frame 270 and the carrier 240 and between the front frame 270 and the rear cover 210 . For example, the shock-absorbing member (not shown) can be a elastic and external force-absorbing member such as a sponge strip, a plastic strip, or a rubber strip. Of course, a protective glass 280 can be disposed between the front frame 270 and the display panel 260 to protect the display panel 260 and prevent the surface of the display panel 260 from being polluted by foreign objects such as dust or particles, which will affect the display quality.

The liquid crystal display device 200 of the present embodiment is, for example, a direct light incident light source as an example. Actually, the above-mentioned line light source 230 is, for example, a plurality of CCFL tubes arranged in parallel with each other. Each line light source 230 has opposite high voltage end portion HV and low voltage end portion LV, and the high voltage end portion HV and low voltage end portion LV are used for illustration only, and not intended to limit the biasing method of the line light source 230 . In addition, the optical film 250 is, for example, a combination of a diffuser 252 and a plurality of diffusers 254 , wherein the optical film 250 is located on a side of the line light source 230 away from the back cover 210 . The optical film 250 can also be, for example, a prism film or a brightness enhancement film, which is designed to help improve the light output quality of the line light source 230 .

Generally speaking, in the liquid crystal display device 200, the line light sources 230 must be evenly arranged to provide uniform light. At the same time, the optical film 250 and the display panel 260 must be fixedly arranged at a specific position to provide a good display effect. Therefore, in the traditional design, it is necessary to use an additional frame design such as the front frame of the display module to assemble the display module first and then assemble the device system, which makes the assembly steps more complicated. However, in this embodiment, components such as the linear light source 230 , the optical film 250 , and the display panel 260 can be installed in ideal positions only by utilizing the design of the rear cover 210 . Therefore, the design of the rear cover 210 in this embodiment greatly simplifies the assembly method of the liquid crystal display device 200 .

In detail, in order to replace the traditional functions of a plurality of frames and carry the line light source 230 , the optical film 250 and the display panel 260 , the present embodiment, for example, proposes the following structural design. 3A and 3B are schematic views of one side of the rear cover of the liquid crystal display device of FIG. 2 . As can be seen from FIGS. 3A-3B , the rear cover 210 includes a main board 212 and a first surrounding wall 214 , wherein the main board 212 has a first side S1 and a second side S2 opposite to each other. Here, the first surrounding wall 214 vertically protrudes from the first side S1 of the main board 212 . It is worth noting that in the area surrounded by the first surrounding wall 214, the main board 212 has a rectangular boss 216 and a plurality of wire accommodating parts 218, wherein in this embodiment, the two wire accommodating parts 218 are located on the rectangular boss respectively. 216 opposite sides as an example. In fact, the wire accommodating portion 218 corresponds to the positions of the high voltage end HV and the low voltage end LV of the line light source 230 respectively.

Please refer to FIG. 2, FIG. 3A and FIG. 3B at the same time. Furthermore, the first surrounding wall 214 of the rear cover 210 has two protruding platforms 222a, 222b corresponding to the positions of the high voltage end HV and the low voltage end LV of the line light source 230. . That is to say, the two protruding platforms 222a, 222b are respectively located above the two wire accommodating portions 218 . In particular, in this embodiment, the planes where the two protruding platforms 222a and 222b are located can just match the protruding height of the rectangular boss 216 . That is to say, the rectangular boss 216 and the two protruding platforms 222 a and 222 b can provide a plane with the same height to carry the line light source 230 .

In other words, when the line light source 230 is disposed on the rear cover 210 , the rectangular boss 216 and the two protruding platforms 222 a and 222 b can jointly support the line light source 230 . In this way, the line light source 230 will not be tilted or unstable, and the line light source 230 will not be broken due to bending. In addition, in this embodiment, the carrier 240 is arranged on the two protruding platforms 222a, 222b, and the opposite ends LV, HV of the line light source 230 are clamped by the two protruding platforms 222a, 222b and the carrier 240 . The plurality of wire accommodating portions 218 are respectively located on opposite sides of the rectangular boss 216 and correspond to the high voltage end portion HV and the low voltage end portion LV of the line light source 230 . At this time, the wires connected to the high voltage end HV and the low voltage end LV of the linear light source 230 can be placed in the wire accommodating portion 218 .

Specifically, FIG. 4 is a partially enlarged schematic view of a carrier according to an embodiment of the present invention. Please refer to FIG. 4 , in fact, the carrier 240 is designed to have a plurality of openings M and a first stepped carrier structure L1 . In particular, when the carrier 240 is installed on the rectangular boss 216 shown in FIG. 3A and FIG. side. In detail, the first stepped carrying structure L1 of each carrier 240 can be subdivided into a first step L11 and a second step L12 relatively far away from the main board 212 .

Similarly, please refer to FIG. 3A and FIG. 3B , the rear cover 210 of this embodiment also has a second step similar to the first step-shaped supporting structure L1 on both sides of the first surrounding wall 214 parallel to the direction D. shape bearing structure L2. Cooperating with the structural design of the first stepped supporting structure L1 , the second stepped supporting structure L2 can be subdivided into the first step L21 and the second step L22 , and faces the rectangular boss 216 . Wherein, the heights of the first step L21 and the second step L22 of the second stepped carrying structure L2 correspond to the heights of the first step L11 and the second step L12 of the first stepped carrying structure L respectively. In this way, when the carrier 240 is assembled to the rear cover 210 , the first steps L11 , L21 and the second steps L12 , L22 respectively provide two parallel planes.

Under such a design, when the optical film 250 and the display panel 260 shown in FIG. superior. That is, the display panel 260 is located on a side of the optical film 250 away from the main board 212 . After the liquid crystal display device 200 is assembled, the optical film 250 and the display panel 260 can be respectively fixed in the area surrounded by the first surrounding wall 214 and the stepped carrying structures L1 , L2 of the carrier 240 . Therefore, the optical film 250 and the display panel 260 will not be unduely slipped or dislocated. In this embodiment, only the front frame 270 and the first surrounding wall 214 need to be locked together, and the display panel 260 and the optical film 250 can be stably clamped therebetween. That is to say, the optical film 250 and the display panel 260 of this embodiment have high stability and reliability.

Of course, the above-mentioned stepped load-bearing structures L1 and L2 are for illustration purposes only, and are not intended to limit the present invention. In the design of the rear cover 210 in other embodiments, the inner side of the first surrounding wall 214 does not necessarily need to have the second stepped bearing structure L2. That is to say, the display panel 260 and the optical film 250 can also be stably fixed in the area surrounded by the first surrounding wall 214 by using the first stepped supporting structure L1 in which the supporting carriers 240 match each other. In addition to carrying the optical film 250 and the display panel 260 , as can be seen from FIG. 4 , the distance between the openings M of the carrier 240 can be adjusted according to different usage requirements. In this way, the line light sources 230 can be fixed in the openings M at a specific interval to provide evenly distributed light.

In addition, in FIG. 3A and FIG. 3B , in order to keep the light tubes parallel to each other after the line light source 230 is assembled on the liquid crystal display device 212 , multiple light tube clips U are designed in this embodiment. The lamp clamp U is disposed on the rectangular boss 216 of the back cover 210 to clamp each line light source 230 . In other words, the lamp tube clip U is, for example, surrounded by a U-shape, and the line light source 230 is installed in the lamp tube clip U along the direction D shown in FIG. 3A and FIG. 3B . Therefore, the design of this embodiment can further make the linear light source 230 less likely to be displaced, and at the same time avoid situations where the linear light source 230 is placed in an incorrect position or the light output is uneven.

Furthermore, in order to prevent the display quality of the liquid crystal display device 200 from being affected by unexpected bending of the optical film 250 , the rectangular boss 216 of this embodiment is further designed with a plurality of protruding support columns P. The support pillar P is used to support the optical film 250 to prevent the optical film 250 from being unexpectedly deflected due to gravity or other external forces, as shown in FIGS. 3A and 3B . In addition, the protruding heights of the plurality of lamp clamps U for clamping the line light source 230 can also be designed in accordance with the height of the support column P, so as to maintain a proper gap between the optical film 250 and the line light source 230 . In this embodiment, the above-mentioned support structure (ie, the support column P, the lamp tube clip U) can be integrally formed with the rear cover 210 . Of course, the support structure can also be made additionally and selectively reserve the support column P and the socket of the lamp tube clamp U (not shown) on the rectangular boss 210, so as to decide whether to use the support column according to the actual assembly requirements. P and lamp clamp U.

Please continue to refer to FIG. 2 , FIG. 3A and FIG. 3B at the same time. In this embodiment, before assembling the linear light source 230 , a reflective sheet 290 may be arranged on the rectangular boss 216 to improve the light utilization rate of the linear light source 230 . In particular, the reflective sheet 290 must at least cover the wire accommodating portion 218 to prevent the transmission line placed in the wire accommodating portion 218 from scattering the light of the line light source 230 and causing uneven brightness of the display panel 260 .

5A and 5B are schematic views of the other side of the rear cover of the liquid crystal display device of FIG. 2 . In this embodiment, the rectangular boss 216 in FIG. 3A and FIG. 3B forms a groove 220 on the second side S2 of the main board 212, as shown in FIG. 5A and FIG. 5B , but the above-mentioned structural design is not intended to limit the present invention. .

Please refer to FIG. 2, FIG. 5A and FIG. 5B at the same time. In the liquid crystal display device 200, the signal control module 310 may include a power module and an image processing module, and the power module may further include a power conversion mechanism, such as converting AC power into DC power or A power conversion module that converts direct current into alternating current. For example, the signal control module 310 can be a combination of components such as an image processing circuit board (video PCB), a power circuit board (power PCB) and a power converter (inverter PCB), and the power circuit board (power PCB) and power converter (inverter PCB) can also be configured on the same circuit board, which also has the advantage of saving space. For example, it is at least composed of an image processing and signal control circuit board PCB, a power inverter INV and a plurality of signal transmission lines (not shown). Actually, the signal control module 310 is used to control the pixel image of the display panel 260 or the signal transmission of the liquid crystal display device 200 . The image processing and signal control circuit board PCB is disposed in the groove 220 on the second side S2 of the main board 212 , and is locked on the rear cover 210 through the locking member 300 . In addition, the signal transmission line of the signal control module 310 can be arranged in the wire accommodating portion 218, and connected to the image processing and signal control circuit board PCB through a plurality of through holes H1 on the side of the rectangular boss 216, so that the liquid crystal display device 200 The appearance is more beautified. Here, the design of this embodiment can at least save the use cost and assembly steps of the transfer member.

In addition, please refer to FIG. 2 , FIG. 5A and FIG. 5B at the same time. In order to dissipate the heat generated by the signal control module 310 effectively, the second side S2 of the main board 212 of the rear cover 210 further includes a second surrounding wall 224 having a plurality of cooling holes H2, which is surrounded by the rear cover 210. The edge of the groove 220. The second surrounding wall 224 surrounding the edge of the groove 220 can not only increase the placement space of the signal control module 310, but also make the heat generated by the signal control module 310 more effective when combined with a plurality of cooling holes H3 on the wall-mounted back cover 320. escaped.

Furthermore, in this embodiment, the rear cover 210 is also provided with a groove 220 for accommodating the signal control module 310 , a rectangular boss 216 for carrying the line light source 230 and the display panel 260 , and a first surrounding wall 214 . Therefore, the line light source 230 can be directly assembled on the back cover 210 without being carried by a traditional metal back plate. At the same time, the line light source 230, the optical film 250 and the display panel 260 do not need to be held together by the traditional panel module front frame 112 and the panel module rear cover 114 to form an independent display module 110 (as shown in FIG. 1 ). That is to say, the design of this embodiment can save the use cost and assembly steps of the metal backplane, the panel module rear cover 114 and the panel module front frame 112 .

According to the above, and from FIG. 2 , FIG. 3A , FIG. 3B , FIG. 4 , FIG. 5A and FIG. 5B , the assembly method of the liquid crystal display device 200 of this embodiment is as follows: firstly, the rear cover 210 is provided. Then, lock the signal control module 310 in the groove 220 of the rear cover 210 . Then, the linear light source 230 is installed on the rectangular boss 216 of the rear cover 210 and a partial area of the first surrounding wall 214 . After that, the line light source 230 is pinched between the back cover 210 and the carrier 240 by the carrier 240 . Next, install a plurality of optical films 250 and a display panel 260 on the carrier 240 and a partial area of the first surrounding wall 214 . In addition, the display panel 260 is pinched together by the front frame 270 and the first surrounding wall 214 , so that the display panel 260 is located between the carrier 240 and the front frame 270 .

In other words, the method for assembling the liquid crystal display device 200 of this embodiment is to sequentially assemble the signal control module 310 , the line light source 230 , the carrier 240 , the optical film 250 , the display panel 260 and the front frame 270 on the back cover 210 on different sides. Compared with the conventional liquid crystal display device 100 which requires at least four front frames and rear covers in total to assemble the liquid crystal display device 100 , the assembly method of this embodiment is relatively simplified. It is worth mentioning that the step of locking the signal control module 310 can be performed after the front frame 270 and the first surrounding wall 214 clamp the display panel 260 together. That is to say, in the present invention, after the components on one side of the back cover 210 are assembled, the components on the other side can be assembled, and it is not limited which side of the components should be assembled first.

FIG. 6 is an exploded perspective view of a reflection sheet and a back cover according to another embodiment of the present invention. Please refer to FIG. 6 , in this embodiment, the material of the back cover 210 is, for example, a reflective plastic material. Therefore, the rectangular boss 216 only needs to be equipped with two reflective sheets 290' covering the wire accommodating portion 218 to achieve the intended effect of the reflective sheet 290 in FIG. 2 and save the use cost of the reflective sheet 290'. It is worth noting that the size of each reflector 290' is only slightly larger than the bottom area of each lead accommodating portion 218.

Overall, no matter which of the above-mentioned designs is used for the liquid crystal display device 200, the rear cover 210 and the carrier 240 can provide an appropriate positioning structure so that the line light source 230, the optical film 250 and the display panel 260 are arranged in the correct position. superior. Therefore, the linear light source 230 , the optical film 250 and the display panel 260 will not be displaced during transportation or movement. In addition, the carrier 240 and the first surrounding wall 214 also provide stepped supporting structures L1 , L2 to avoid improper contact or misalignment of the optical film 250 and the display panel 260 , resulting in poor display effects. That is to say, the liquid crystal display device 200 has good quality and display effect in addition to the advantages of simplified assembly method and reduced cost of use.

To sum up, in the traditional liquid crystal display device, the display module must be assembled in advance, and then assembled with components such as the front frame of the display device, the signal control module, the transfer part, and the rear covers of the display device. Therefore, the liquid crystal display device in the past requires at least four front frames and rear covers in total to assemble the liquid crystal display device, which fails to simplify the assembly process and also increases the cost. The invention changes the structural design of the back cover and matches it with a carrier with a stepped load-bearing structure, so that components such as the signal control module, line light source, optical diaphragm, and display panel can be directly arranged on the back cover in sequence, thereby simplifying the liquid crystal display. A method of assembling the display device. In short, the liquid crystal display device and its assembly method of the present invention at least have the advantages of simple assembly process and reduced material cost.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall prevail as defined in the claims.

Claims (26)

1. liquid crystal indicator comprises:

One bonnet comprises a mainboard and one first surrounding wall, and this mainboard has one first relative side and one second side, and this first surrounding wall is vertically protruded out by this first side of this mainboard;

One signal controlling module is arranged on this second side of this mainboard;

At least one line source is arranged on this first side, those line sources parallel to each other in fact and respectively this line source have two relative ends;

A pair of carrier, be arranged on this first side, this to carrier toward each other, wherein respectively this carrier has a plurality of openings and one first stepped bearing structure, those openings are towards this mainboard those ends with ccontaining those line sources, and this first stepped bearing structure is positioned at the side of this carrier away from this mainboard;

A plurality of blooming pieces are configured on this subregion to those first stepped bearing structures of carrier and this first surrounding wall;

One display panel be configured on this subregion to those first stepped bearing structures of carrier and this first surrounding wall, and this display panel is positioned at the side of those blooming pieces away from this mainboard; And

Frame before one, locking seizes this display panel jointly on both sides by the arms on this bonnet and with this first surrounding wall and this is to carrier.

2. liquid crystal indicator according to claim 1, wherein this mainboard has a rectangular boss and a plurality of lead holding part, be arranged in this first surrounding wall institute region, and those lead holding parts are positioned at the relative both sides of this rectangular boss and corresponding to those ends of those line sources.

3. liquid crystal indicator according to claim 2 also comprises at least one reflector plate, is configured in and also hides those lead holding parts on this rectangular boss at least.

4. liquid crystal indicator according to claim 2, wherein this rectangular boss constitutes a groove in this second side of this mainboard, and this signal controlling module locking is in this groove.

5. liquid crystal indicator according to claim 1, wherein this first surrounding wall has two and protrudes platforms two protrude on platform so that this is configured in this to carrier, and those end clips of those line sources at this between carrier and this two protrusions platform.

6. liquid crystal indicator according to claim 1, wherein this first surrounding wall has a plurality of second stepped bearing structure of parallel those line sources, and this second stepped bearing structure and this first stepped bearing structure carry those blooming pieces and this display panel jointly.

7. liquid crystal indicator according to claim 6, wherein respectively this second stepped bearing structure has one first rank and one second rank, these first rank are placed on these first rank near this mainboard and those blooming pieces relatively, and this display panel is placed on these second rank.

8. liquid crystal indicator according to claim 1 also comprises a plurality of supporting constructions, is configured on this rectangular boss, to support those line sources and those blooming pieces.

9. liquid crystal indicator according to claim 8, wherein those supporting constructions and this bonnet are one-body molded.

10. liquid crystal indicator according to claim 1, wherein this display panel has a display panels and a control circuit board, and this control circuit board is folded into the outside of this first surrounding wall from an edge of this display panels, and is locked in admittedly on this first surrounding wall.

11. the assemble method of a liquid crystal indicator comprises:

One bonnet is provided, and this bonnet comprises a mainboard and one first surrounding wall, and this mainboard has one first relative side and one second side, and this first surrounding wall is vertically protruded out by this first side of this mainboard;

A plurality of line sources this first side at this mainboard is set, wherein those line sources parallel to each other in fact and respectively this line source have two relative ends;

Utilize a pair of carrier that those line sources are seized on both sides by the arms between this bonnet and this are to carrier, wherein this is to carrier toward each other, respectively this carrier has a plurality of openings and one first stepped bearing structure and those openings towards this mainboard those ends with ccontaining those line sources, and this first stepped bearing structure is positioned at the side of this carrier away from this mainboard;

Dispose a plurality of blooming pieces and a display panel on this subregion to those first stepped bearing structures of carrier and this first surrounding wall, wherein this display panel is positioned at the side of those blooming pieces away from this mainboard;

With frame locking before on this bonnet, and should before frame and this first surrounding wall seizes this display panel jointly on both sides by the arms and this is to carrier; And

With signal controlling module locking this second side at this mainboard.

12. the assemble method of liquid crystal indicator according to claim 11 wherein after locking a signal controlling module this second side at this mainboard admittedly, also utilizes wall built-up back of the body lid to hide this signal controlling module.

13. the assemble method of liquid crystal indicator according to claim 11, wherein respectively this first stepped bearing structure of this carrier has one first rank and one second rank, these first rank are relatively near this mainboard, and the method that disposes those blooming pieces and this display panel comprises those blooming pieces is placed on these first rank, and this display panel is placed on these second rank.

14. the assemble method of liquid crystal indicator according to claim 11, wherein this first surrounding wall has a plurality of second stepped bearing structure of parallel those line sources, respectively this second stepped bearing structure has one first rank and one second rank, these first rank are relatively near this mainboard, and the method that disposes those blooming pieces and this display panel comprises those blooming pieces is placed on these first rank, and this display panel is placed on these second rank.

15. a liquid crystal indicator comprises:

One bonnet, has male structure in a concave inward structure and, and this bonnet has one first relative side and one second side, wherein this concave inward structure is a boss, be positioned at this first side of this bonnet, and this boss has a plurality of supporting constructions, and should interior male structure be a groove, is positioned at this second side of this bonnet;

One signal controlling module is arranged on this groove;

At least one line source is arranged on this boss, and parallel to each other in fact and this at least one line source of this at least one line source has two relative ends, and wherein those supporting constructions of this boss are in order to support this at least one line source; And

Frame before one, locking is seized display panel on both sides by the arms jointly on this bonnet and with this bonnet.

16. liquid crystal indicator according to claim 15, wherein this bonnet also has one first surrounding wall, this first surrounding wall is around this boss, and forming a plurality of lead holding parts, and those lead holding parts are positioned at the relative both sides of this boss and corresponding to those ends of this at least one line source.

17. liquid crystal indicator according to claim 15, also comprise a pair of carrier, be arranged on this first side, this to carrier toward each other, wherein respectively this carrier has a plurality of openings and one first stepped bearing structure, those openings are towards this bonnet those ends with ccontaining this at least one line source, and this first stepped bearing structure is positioned at the side of this carrier away from this bonnet, wherein respectively this first stepped bearing structure of this carrier has one first rank and one second rank, these first rank are placed on these first rank near this bonnet and those blooming pieces relatively, and this display panel is placed on these second rank.

18. liquid crystal indicator according to claim 15, wherein those supporting constructions and this boss are one-body molded.

19. liquid crystal indicator according to claim 16 also comprises at least one reflector plate, is configured in and also hides those lead holding parts on this boss at least.

20. liquid crystal indicator according to claim 16 also comprises one second surrounding wall, is around in the edge of this groove.

21. liquid crystal indicator according to claim 20, wherein this second surrounding wall has a plurality of louvres.

22. liquid crystal indicator according to claim 16, also comprise a pair of carrier, be arranged on this first side, this to carrier toward each other, wherein respectively this carrier has a plurality of openings and one first stepped bearing structure, those openings are towards this bonnet those ends with ccontaining this at least one line source, and this first stepped bearing structure is positioned at the side of this carrier away from this bonnet.

23. liquid crystal indicator according to claim 22, wherein this first surrounding wall has two protrusion platforms, two protrude on platform so that this is configured in this to carrier, and those end clips of this at least one line source are between this is to carrier and this two protrusions platform.

24. liquid crystal indicator according to claim 22, wherein this first surrounding wall has a plurality of second stepped bearing structure of parallel those line sources, and this second stepped bearing structure and the common bearing optical diaphragm of this first stepped bearing structure and this display panel.

25. liquid crystal indicator according to claim 24, wherein respectively this second stepped bearing structure has one first rank and one second rank, these first rank are placed on these first rank near this bonnet and blooming piece relatively, and this display panel is placed on these second rank.

26. liquid crystal indicator according to claim 22, wherein this display panel has a display panels and a control circuit board, and this control circuit board is folded into the outside of this first surrounding wall from an edge of this display panels, and is locked in admittedly on this first surrounding wall.

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