CN114779531A

CN114779531A - Backlight lamp strip keysets, backlight unit and display device

Info

Publication number: CN114779531A
Application number: CN202210567370.8A
Authority: CN
Inventors: 阙初光; 刘利; 董文波
Original assignee: BOE Technology Group Co Ltd; K Tronics Suzhou Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; K Tronics Suzhou Technology Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-07-22
Anticipated expiration: 2042-05-23
Also published as: CN114779531B

Abstract

The application discloses backlight lamp strip keysets includes: the lamp strip switching device comprises a switching plate body and a control panel, wherein the switching plate body comprises a first switching surface and a second switching surface opposite to the first switching surface, the first switching surface is provided with lamp strip switching ports which correspond to the number and the positions of lamp strips one by one, and the second switching surface is provided with at least one control switching port; the switching circuit sets up on the keysets body, connects lamp strip switching mouth and control switching mouth. The backlight lamp strip adapter plate is provided with lamp strip adapter ports which correspond to the number and the positions of the lamp strips one by one so as to be correspondingly connected with the connecting ends of the plurality of lamp strips one by one; a control switching port is arranged to be connected with the control panel; set up switching circuit on the keysets body, make lamp strip switching mouth and control switching mouth through switching circuit, realize the connection of a plurality of lamp strips and control panel, need not to set up too much connecting wire and make the connection of a plurality of lamp strips and control panel, not only reduce connecting wire's use quantity, can simplify backlight unit's equipment moreover, finally reach research and development and the manufacturing cost who reduces backlight unit.

Description

Backlight lamp strip keysets, backlight unit and display device

Technical Field

The application belongs to the technical field of show, especially, relate to a backlight lamp strip keysets, backlight unit and display device.

Background

In the related art, each light bar or each light area is connected to the control panel through a connecting line in the assembly of the backlight module, the more the light bars or the more the light areas of the backlight module are, the more the connecting lines are, the more complicated the assembly and the production of the backlight module are, the more difficult the production process of the whole backlight module is, and the higher the research and development and the production cost are caused.

Disclosure of Invention

This application aims at solving backlight lamp strip or lamp area's connecting wire too much to a certain extent at least, the backlight that leads to assembles loaded down with trivial details, research and development and the higher technical problem of manufacturing cost. Therefore, the application provides a backlight lamp strip adapter plate, a backlight module and a display device.

The embodiment of this application provides a backlight lamp strip keysets, backlight lamp strip keysets includes:

the lamp strip switching device comprises a switching plate body and a control panel, wherein the switching plate body comprises a first switching surface and a second switching surface opposite to the first switching surface, the first switching surface is provided with lamp strip switching ports which correspond to the number and the positions of lamp strips one by one, and the second switching surface is provided with at least one control switching port;

the switching circuit is arranged on the switching plate body and is connected with the light bar switching port and the control switching port.

In some embodiments, the light bar adapter interface is provided with an inter-buckled connector, and the inter-buckled connector is in inter-buckled connection with the connecting end of the light bar.

In some embodiments, the light bar adapter and the connection end of the light bar adopt a common anode connection mode.

In some embodiments, the interposer body is a printed circuit board.

In some embodiments, the control interface is provided with a hub connector.

In some embodiments, the adapter plate body is provided with a fixing screw hole at a position corresponding to the through hole of the back plate.

The backlight module provided by the embodiment of the application comprises at least one backlight lamp strip adapter plate, a plurality of lamp strips connected with the lamp strip adapter ports and a control panel connected with the control adapter ports.

In some embodiments, the plurality of light bars are arranged in parallel, and the extending direction of the backlight light bar adapter plate is perpendicular to the extending direction of the light bars.

In some embodiments, the backlight module further comprises a back plate, and the backlight light bar adapter plate and the control plate are fixed on the back plate.

In some embodiments, the control interface is connected to the control board via a flex cable or a flexible flat cable.

An embodiment of the present application provides a display device, which is characterized by including the above backlight module.

The embodiment of the application has at least the following beneficial effects:

the adapter plate body of the backlight lamp strip adapter plate is provided with lamp strip adapter ports which correspond to the number and the positions of the lamp strips one by one so as to be connected with the connecting ends of the plurality of lamp strips one by one; the adapter plate body is also provided with a control adapter port to be connected with the control panel; the adapter plate body is provided with a switching circuit, and the lamp strip switching port and the control switching port are connected through the switching circuit. Through the connection of a plurality of lamp strips and control panel is realized to backlight lamp strip keysets through this application, need not to set up the connection that too much connecting wire made a plurality of lamp strips and control panel, not only reduces connecting wire's use quantity, can simplify backlight unit's equipment moreover, makes backlight unit's equipment simpler, finally reaches research and development and manufacturing cost that reduce backlight unit. Furthermore, the number and the position of the light bar adapter ports of the backlight light bar adapter plate correspond to the number and the position of the light bars one to one, so that the interface connection error in the assembling process of the backlight light source can be effectively avoided, the difficulty and the error rate of the assembling of the backlight module are reduced, and the assembling efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view illustrating a connection relationship between a light bar and a backlight light bar adapter plate in an embodiment of the present application;

fig. 2 shows a lamp bead wiring schematic diagram of each row of lamp bars in fig. 1;

FIG. 3 shows an enlarged schematic view at A in FIG. 1;

fig. 4 shows a front view of the backlight light bar adapter plate of fig. 1;

FIG. 5 shows an enlarged schematic view at B in FIG. 4;

fig. 6 is a schematic diagram illustrating a connection relationship between a control board and a control interface of a backlight module in an embodiment of the present application;

fig. 7 shows a rear view of the backlight light bar adapter plate of fig. 1;

FIG. 8 shows an enlarged schematic view at C in FIG. 7;

fig. 9 shows a switching circuit distribution diagram of the backlight lamp strip switching board in fig. 1;

FIG. 10 shows an enlarged schematic view at D of FIG. 9;

FIG. 11 shows an enlarged schematic view at E in FIG. 9;

FIG. 12 shows an enlarged schematic view at F in FIG. 11;

fig. 13 is a schematic diagram showing the relative positions of the back plate and the control plate of the backlight module in the embodiment of the present application.

Reference numerals are as follows:

100. a backlight lamp strip adapter plate; 110. an adapter plate body; 111. a light bar switching port; 112. controlling the switching port; 113. fixing screw holes; 120. a switching circuit; 200. a light bar; 300. a control panel; 400. a back plate; 500. a flexible flat cable.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

in the present application, the Light bar 200 refers to a plurality of Light Emitting units fixed on a Printed Circuit Board (PCB) as a row, and in the embodiment of the present application, a backlight Light bar adapter board 100, a backlight module and a display device of the present application are exemplarily described by taking Light Emitting Diodes (LEDs) as Light Emitting units. Meanwhile, the sizes of the drawings disclosed by the application are not strictly drawn according to actual proportions, the number of the light-emitting units in the light bar 200, the number of the light bars 200 in the display module and the number of the backlight light bar adapter plates 100 in the display module are not the number shown in the positioning diagram, and the specific sizes and the number of each structure can be determined according to actual needs.

Today, with the rapid development of display technology, there is an increasing demand for high-definition and large-size display devices, and a large-size display device having a Local-dimming (Local-dimming) function is receiving more and more attention. Local-dimming refers to dividing a backlight source into a plurality of areas, adjusting the brightness of the backlight according to the gray scale of the liquid crystal display content in the areas to enable a bright image to be brighter and a dark image to be darker, and combining image compensation to achieve the purposes of saving energy, increasing contrast, preventing light leakage and the like. The subregion of backlight is more, and the image quality is better, but every subregion of backlight needs independent control, and every lamp strip 200 all need be drawn forth the connecting wire alone promptly and be connected with control panel 300, and along with the increase of backlight lamp strip 200 quantity, the corresponding increase of connecting wire quantity that needs, the wiring of backlight unit inside is complicated, and not only assembly production is loaded down with trivial details, appears grafting mistake moreover easily.

In order to simplify the production process, promote production efficiency, reduction in production cost, this application first big aspect provides a backlight lamp strip keysets 100, as shown in fig. 4, fig. 7 and fig. 9, backlight lamp strip keysets 100 of this application embodiment includes:

the adapter plate body 110 comprises a first adapter surface and a second adapter surface opposite to the first adapter surface, the first adapter surface is provided with light bar adapter ports 111 corresponding to the number and the positions of the light bars 200 one by one, and the second adapter surface is provided with at least one control adapter port 112;

the adapter circuit 120 is disposed on the adapter board body 110, and connects the light bar adapter 111 and the control adapter 112.

In this embodiment, as shown in fig. 1, 3 and 4, the adapter plate body 110 of the backlight light bar adapter plate 100 is provided with light bar adapter ports 111 corresponding to the number and positions of the light bars 200 one by one, so as to be connected to the connection ends of the light bars 200 one by one; as shown in fig. 6, the adapter plate body 110 is further provided with a control adapter 112 to connect with the control board 300; as shown in fig. 9 to 12, the adapter circuit 120 is disposed on the adapter plate body 110, and the light bar adapter 111 and the control adapter 112 are connected through the adapter circuit 120. Through the backlight lamp strip keysets 100 of this application realize being connected of a plurality of lamp strips 200 and control panel 300, need not to set up too much connecting wire and make the connection of a plurality of lamp strips 200 and control panel 300, not only reduce connecting wire's use quantity, can simplify backlight unit's equipment moreover, make backlight unit's equipment simpler, finally reach research and development and manufacturing cost who reduces backlight unit. Further, the number and the positions of the light bar adapter ports 111 of the backlight light bar adapter plate 100 correspond to the number and the positions of the light bars 200 one to one, so that the interface connection error in the assembling process of the backlight light source can be effectively avoided, the difficulty and the error rate of the assembling of the backlight module are reduced, and the assembling efficiency is improved.

As an optional implementation manner, the light bar adapting port 111 of the present embodiment is provided with an inter-buckling connector, and the inter-buckling connector is connected with the connecting end of the light bar 200 in a buckling manner. In this embodiment, the light bar transferring ports 111 are provided with connectors that are fastened with each other, and the connectors that are fastened with each other can be connected with the connecting ends of the light bars 200 in a fastened manner, that is, in the assembling process of the backlight module, the connecting ends of the light bars 200 can be directly fastened with the connectors that are fastened with each other of the corresponding light bar transferring ports 111, so that the light bars 200 can be efficiently and quickly connected to the backlight light bar transferring plate 100 in the assembling process, and the assembling efficiency can be greatly improved.

Further optionally, a mark is arranged on the adapter plate body 110 corresponding to the light bar adapter port 111, that is, a mark corresponding to the light bar adapter port 111 one to one is arranged on the adapter plate body 110, the mark can be any one of an alphabetic mark, a character mark, an image mark and a digital mark, through the mark corresponding to the light bar adapter port 111, the light bar 200 can be quickly and accurately connected to the corresponding light bar adapter port 111, the efficiency of connection and assembly is improved, and the probability of connection errors is greatly reduced.

As an alternative embodiment, the connection ends of the light bar adapter 111 and the light bar 200 are connected in a common anode manner. In this embodiment, as shown in fig. 2, each row of light bars 200 may adopt different light bar wiring forms according to different numbers of light bars, anodes of the light bars of each light bar 200 are connected in parallel, that is, the light bars 200 adopt a common anode connection mode, so that the light bars can be connected with the light bar adapter 111 through one anode connection point; meanwhile, the cathodes of every two lamp beads of each lamp strip 200 are connected in parallel, so that the number of cathode connection points of the lamp strips 200 can be reduced by a half to be connected with the lamp strip adapter 111; by arranging the common anode and part of the common cathode, the number of anode connection points and cathode connection points can be greatly reduced, so that the connection structure of the light bar adapter 111 is simple, and the wiring mode of the adapter circuit 120 can be simplified.

In other embodiments, the lamp beads of the light bar 200 may also adopt other wiring manners. For example, anodes of the lamp beads of each light bar 200 are connected in parallel, and cathodes of the lamp beads of each light bar 200 are separately disposed; for another example, the anodes of the lamp beads of each light bar 200 are connected in parallel, and the cathodes of the three lamp beads of each light bar 200 are connected in parallel, etc.

As an alternative embodiment, as shown in fig. 9 to 12, in the present embodiment, the interposer body 110 is a printed circuit board. The first side of the printed circuit board is provided with a light bar adapter port 111, the second side of the printed circuit board is provided with a control adapter port 112, and the first side or the second side of the printed circuit board is provided with an adapter circuit 120 so as to connect the light bar adapter port 111 with the control adapter port 112. In this embodiment, the switching circuit 120 between the light bar switching interface 111 and the control switching interface 112 has a one-to-one correspondence relationship, and through setting the switching circuit 120 on the printed circuit board, only through the adapter plate body 110 between the light bar 200 and the control panel 300, there are not too many connecting wires, and the line is clearly arranged in the overall layout, so that the assembly and production are convenient, and the later-stage maintenance and repair are convenient.

As an alternative embodiment, in the present embodiment, as shown in fig. 7 and 8, the control interface 112 is provided with a pin connector. This control adapter 112 can conveniently be connected through the pin socket connector with winding displacement or flexible flat cable 500, and control adapter 112 conveniently is connected with control panel 300, reduces the wiring between lamp strip 200 and the control panel 300 through backlight lamp strip keysets 100, can improve production efficiency and practice thrift manufacturing cost.

As an alternative embodiment, as shown in fig. 4 and fig. 13, in this embodiment, a fixing screw hole 113 is formed in a position of the adapter plate body 110 corresponding to the through hole of the back plate 400. The adapter plate body 110 is provided with fixing screw holes 113, and the adapter plate body 110 and the back plate 400 can be fixedly connected by mounting screws on the fixing screw holes 113. It should be noted that the fixing screw holes 113 formed in the adapter plate body 110 need to be careful to avoid the light bar adapter 111, the control adapter 112, and the adapter circuit 120. In addition, the adapter plate body 110 is detachably fixed to the back plate 400 by screws, so that the adapter plate body can be replaced more easily even in the case of poor backlight.

In other embodiments, the interposer body 110 may also be disposed on the back plate 400 in other fixed connection manners, for example, the interposer body 110 is adhered to the back plate 400 by a bonding material such as a double-sided tape. Note that when the interposer body 110 is attached to the backplane 400 by an adhesive material such as a double-sided tape, care should be taken to reserve a connection space between the interposer body 110 and the back surface for controlling the interposer 112.

Based on the same inventive concept, a second broad aspect of the present application provides a backlight module, which includes at least one backlight light bar adapter plate 100, a plurality of light bars 200 connected to the light bar adapter interface 111, and a control board 300 connected to the control adapter interface 112.

Because the backlight module provided by the invention comprises the backlight lamp strip adapter plate 100 of the technical scheme, the backlight module provided by the invention has all the beneficial effects of the backlight lamp strip adapter plate 100, and details are not repeated herein.

The backlight module of the present embodiment includes a backlight light bar adapter board 100, a plurality of light bars 200 and a control board 300. Optionally, the light bars 200 are arranged in parallel, and the extending direction of the backlight light bar adapter plate 100 is perpendicular to the extending direction of the light bars 200. As shown in fig. 1 to fig. 3, in the present embodiment, a plurality of light bars 200 are arranged in parallel in four rows, a backlight light bar adapter plate 100 is arranged between every two rows of light bars 200, the backlight light bar adapter plate 100 is arranged vertically relative to the light bars 200, two rows of light bar adapter ports 111 are arranged on a first adapter surface of the adapter plate body 110 along the length direction of the light bar 200 adapter plate, the number and the positions of the light bar adapter ports 111 correspond to those of the light bars 200 one by one, so as to connect with the connection ends of the light bars 200 on two sides, thereby realizing the connection between the light bars 200 and the backlight light bar adapter plate 100. Meanwhile, three control adapter ports 112 are formed on the second adapter surface of the adapter plate body 110 along the length direction of the adapter plate of the light bar 200, and are used for being connected with the control board 300.

As an alternative embodiment, the backlight module further includes a back plate 400, and the backlight light bar adapter plate 100 and the control plate 300 are fixed on the back plate 400. As shown in fig. 8, in the present embodiment, the backlight lamp strip adapter plate 100 is provided with fixing screw holes 113, and correspondingly, the back plate 400 is provided with through holes, and after the fixing screw holes 113 of the backlight lamp strip adapter plate 100 are aligned with the through holes of the back plate 400, the backlight lamp strip adapter plate 100 can be fixedly connected with the back plate 400 through the through hole screws. Preferably, the second adapting surface of the backlight lamp strip adapting plate 100 is attached to the back plate 400 to realize the fixed connection between the backlight lamp strip adapting plate 100 and the back plate 400.

As an alternative embodiment, the control interface 112 is connected to the control board 300 by a flat cable or a flexible flat cable 500. As shown in fig. 8, in the present embodiment, the control adapter 112 of the backlight light bar adapter board 100 is connected to the control board 300 through a flat cable or a flexible flat cable 500, and the flat cable or the flexible flat cable 500 is a connection wire during assembly, so that the control adapter 112 is conveniently connected to the control board 300. Further, in the embodiment, the control board 300 is located between the two backlight lamp strip adapter plates 100, and the distances between the two backlight lamp strip adapter plates 100 and the control board 300 are relatively short, so that the required flat cable or flexible flat cable 500 is relatively short, raw materials can be saved to a certain extent, and the product cost is reduced; meanwhile, because the distance between the two backlight lamp strip adapter plates 100 and the control plate 300 is relatively short, the operation of folding the flat cable or the flexible flat cable 500 can be avoided, and the production is facilitated.

Based on the same inventive concept, the third broad aspect of the present application further provides a display device, which comprises the backlight module.

Because the display device provided by the invention comprises the backlight module of the technical scheme, the display device provided by the invention has all the beneficial effects of the backlight module, and the details are not repeated herein.

The display device is a liquid crystal display device, and for example, the display device can be implemented as a product as follows: the intelligent display system comprises any product or part with a display function, such as a television, a mobile phone, a tablet computer, a display, a notebook computer, an intelligent screen, an intelligent furniture terminal, an ATM (automatic teller machine) and the like.

In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships that are based on the orientations or positional relationships illustrated in the figures, but are used for convenience in describing the present application and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus, are not to be considered limiting of the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used for explaining the relative position relationship, the motion condition, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed correspondingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

Furthermore, descriptions in this application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope claimed in the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a backlight lamp strip keysets, its characterized in that, backlight lamp strip keysets includes:

2. The backlight light bar adapter plate of claim 1, wherein the light bar adapter port is provided with a mutual buckling connector, and the mutual buckling connector is mutually buckled with the connecting end of the light bar.

3. The backlight light bar adapter plate of claim 2, wherein the light bar adapter interface is connected to the connection end of the light bar by a common anode.

4. The backlight light bar interposer of claim 1, wherein the interposer body is a printed circuit board.

5. The backlight light bar adapter plate of claim 1, wherein the control adapter interface is provided with a pin socket connector.

6. The backlight light bar adapter plate of any one of claims 1 to 5, wherein the adapter plate body is provided with a fixing screw hole at a position corresponding to the through hole of the back plate.

7. A backlight module, characterized in that the backlight module comprises at least one backlight lamp strip adapter plate according to any one of claims 1 to 6, a plurality of lamp strips connected with the lamp strip adapter ports and a control panel connected with the control adapter ports.

8. The backlight module of claim 7, wherein the plurality of light bars are arranged in parallel, and the extension direction of the backlight light bar adapter plate is perpendicular to the extension direction of the light bars.

9. The backlight module of claim 7, wherein the backlight module further comprises a back plate, and the backlight light bar adapter plate and the control plate are fixed on the back plate.

10. The backlight module according to any one of claims 7-9, wherein the control interface is connected to the control board via a flat cable or a flexible flat cable.

11. A display device comprising the backlight module according to any one of claims 7 to 10.