Backplane and LCD device comprising backplane

The invention relates to the field of LCDs, and more particularly to a backplane and an LCD device including the backplane. The backplane includes a frame and a bottom plate; the frame is of a joining structure, and includes a plurality of frame edge members; the frame edge members are equilong. The backplane of the invention employs a modular design, the frame of the backplane is divided into a plurality of equilong frame edge member units, and the design is standardized. When the new products of LCD devices are developed, only frame edge members of different number are selected from the standardized modular units for combination and use. The members have a high generality, thereby reducing the development cost of special moulds, shortening the development cycle of products, avoiding the problem that a great deal of stagnant materials are inconveniently handled when developing a single device. Thus, the aim of reducing cost is achieved.

TECHNICAL FIELD

The invention relates to the field of liquid crystal displays (LCDs), and more particularly to a backplane and an LCD device comprising the backplane.

BACKGROUND

Conventional LCD devices in mass production include light guide panels (LGPs), reflectors, and optical films. The components are generally fixed on backplanes. The manufacturing process of the backplanes includes integrated punching, radium welding, and so on. The sizes of the backplanes of all the modules are inconsistent, thereby requiring independent design and manufacturing of the backplanes, as well as manufacturing corresponding special moulds. The moulds have a long development cycle and cannot be shared. Thus, the production cost of the backplane is restricted from being further reduced, and the development cycle of LCD devices is restricted from being further shortened.

SUMMARY

In view of the above-described problems, the aim of the invention is to provide a backplane that is modular, joining-type, and low-cost and an LCD device comprising the backplane.

A first technical scheme of the invention is that: a backplane comprises a frame and a bottom plate; the frame is of a joining structure, and comprises a plurality of frame edge members. The frame edge members are equilong. The backplane further comprises four frame corner members. Each of four edges of the frame is joined by one or more frame edge members. A universal interface structure is arranged between the frame members, and the universal interface structure is also arranged between the frame members and the frame corner members. The interface structure comprises a convex lug(s) arranged on one member and a groove(s) correspondingly arranged in another member. The convex lug is limited in the groove, and the bottom plate is a grid structure formed by joining a plurality of frame bars.

A second technical scheme of the invention is that: a backplane comprises a frame and a bottom plate; the frame is of a joining structure, and comprises a plurality of frame edge members; the frame edge members are equilong.

Preferably, the backplane further comprises four frame corner members; the frame corner members can improve the intensity at the frame corners.

Preferably, each of four edges of the frame is joined by one or more frame edge members, to form a backplane with different length and width.

Preferably, a universal interface structure is arranged between the frame members.

Preferably, a universal interface structure is arranged between the frame members and the frame corner members.

Preferably, the interface structure comprises a convex lug(s) arranged on one member, and a groove(s) correspondingly arranged in another member. The convex lug is limited in the groove. The positioning structure of the convex lug and the groove can prevent two members joined together from relatively rotating with a screw or a rivet as an axis, thereby improving the structural strength of the backplane.

Preferably, the interface structure is a convex lug arranged on one member; the convex lug is attached to a main body of an adjacent member.

Preferably, the bottom plate is formed by joining a plurality of baffles having the same size. The bottom plate of the backplane is of a detachable structure, which is joined and assembled. The design is a development of the modular design, and can reduce cost and shorten development cycle.

Preferably, the bottom plate is a grid structure formed by joining a plurality of frame bars. Thus, the material of the bottom plate is saved, and the cost is reduced.

A third technical scheme of the invention is that: an LCD device comprises the backplane mentioned above.

Advantages of the invention are summarized below. The backplane of the invention employs modular design. The frame of the backplane is divided into a plurality of equilong frame edge member units, and the design is standardized. When the new products of LCD devices are developed, only frame edge members of different number are selected from the standardized modular units for combination and use. The members have high generality, thereby reducing the development cost of special moulds, shortening the development cycle of products, avoiding the problem that a great deal of stagnant materials are inconveniently handled when developing single devices. Thus, the aim of reducing cost is achieved.

DETAILED DESCRIPTION

The invention provides an LCD device. The LCD device comprises a backplane.FIGS. 1-5show a first example1of the backplane of the invention. The backplane comprises a frame1and a bottom plate2; the frame1is of a joining structure, and comprises four frame corner members11and a plurality of equilong frame edge members12.

In the example, each of the four edges of the frame is joined by one or more frame edge members12. Specifically, the frame comprises two frame edge members12in the length direction, and one frame edge member12in the width direction. The frame edge member12and the frame corner member11, and the frame edge member12and the frame edge member12are respectively screwed by a screw or riveted by a rivet. Thus, two adjacent members are quickly joined. The frame corner members11can improve the intensity at the frame corners of the backplane.

The backplane of the invention employs a modular design, and the frame1of the backplane is divided into multiple units of frame corner members11and equilong frame edge members12, and the design is standardized. When the new products of LCD devices are developed, only frame corner members11and frame edge members12of different number are selected from the standardized modular units for combination and use. The members have a high generality, thereby reducing the development cost of special moulds, shortening the development cycle of products, and avoiding the problem that a great deal of stagnant materials are inconveniently handled when developing single devices. Thus, the aim of reducing cost is achieved.

If the four frame corner members11are of the same size, backplanes of different size can be formed by joining only one type of frame corner members11and one type of frame edge members12; thus, the number of the required moulds becomes less, and the generality becomes higher.

A universal interface structure is arranged between the frame edge members and the frame corner members. Specifically, in the example, the interface structure comprises a convex lug13arranged on one member, and a groove(s)14correspondingly arranged in another member; the convex lug13is limited in the groove14. As shown inFIG. 3andFIG. 4, the frame corner member11is provided with the groove(s)14, the frame edge member12connected with the frame corner member11is correspondingly provided with the convex lug(s)13, the convex lug13is limited in the groove14, and the convex lug13and the groove14are provided with a through hole. A screw3penetrates the through hole and locks the frame corner member11and the frame edge member12. The positioning structure of the convex lug13and the groove14can prevent two members joined together from relatively rotating with a screw or a rivet as an axis, thereby improving the structural strength of the backplane.

The universal interface structure can also be arranged between the frame edge members12of the invention. The interface structure in the example comprises convex lugs13arranged on the two connected frame edge members12, respectively. The convex lugs13are attached to a main body of an adjacent frame edge member, and are locked by screws or rivets. Optionally, the matching structures of grooves and convex lugs mentioned above can also be arranged between the frame edge members12.

As a simple deformation of the aforementioned example, the frame corner member is provided with a convex lug, the frame edge member connected with the frame corner member is correspondingly provided with a groove, and the convex lug is limited in the groove, thereby achieving the aim as well.

In the example, the bottom plate2is formed by joining a plurality of baffles21having the same size. The baffles21are arranged on the frame1by welding, screwing, or riveting. The bottom plate of the backplane is of a detachable structure, which is joined and assembled. The design is a development of the modular design, and can reduce cost and shorten development cycle.

FIG. 6shows a second example of the backplane of the invention. The bottom plate2is a grid structure formed by joining a plurality of frame bars22. The example has the advantages of saving the material of the bottom plate2, and reducing cost as well as having the advantages as the first example.

Optionally, the backplane of the invention can only comprise a plurality of equilong frame edge members without using frame corner members. The two frame edge members at the frame corner are vertically joined and fixed by a special structure, and the frame edge members of the frame edges are joined by universal interfaces from beginning to end. Thus, the modular design can be achieved as well, and the corresponding advantages can be obtained.

The invention is described in detail in accordance with the above contents with the specific preferred examples. However, this invention is not limited to the specific examples. For the ordinary technical personnel of the technical field of the invention, on the premise of keeping the conception of the invention, the technical personnel can also make simple deductions or replacements, and all of which should be considered to belong to the protection scope of the invention.