WO2020088693A1 - 液晶显示装置及其一体式背板 - Google Patents

液晶显示装置及其一体式背板 Download PDF

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Publication number
WO2020088693A1
WO2020088693A1 PCT/CN2019/119232 CN2019119232W WO2020088693A1 WO 2020088693 A1 WO2020088693 A1 WO 2020088693A1 CN 2019119232 W CN2019119232 W CN 2019119232W WO 2020088693 A1 WO2020088693 A1 WO 2020088693A1
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WO
WIPO (PCT)
Prior art keywords
wrap angle
liquid crystal
backplane
back plate
frame
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Application number
PCT/CN2019/119232
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English (en)
French (fr)
Inventor
崔得林
Original Assignee
青岛海信电器股份有限公司
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Publication date
Priority claimed from CN201811406330.5A external-priority patent/CN111200713B/zh
Application filed by 青岛海信电器股份有限公司 filed Critical 青岛海信电器股份有限公司
Publication of WO2020088693A1 publication Critical patent/WO2020088693A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods

Definitions

  • the present application relates to the technical field of display devices, in particular to a liquid crystal display device and its integrated backplane.
  • the ultra-thin frameless display device structure is considered to be the future trend.
  • the ultra-thin display device is more suitable for home wall hanging, thin as a picture art, and shaped like a photo frame.
  • the structural skeleton of the display device mainly includes a back plate, a plastic frame, a middle frame, a front case, a rear case, etc.
  • the assembly requirements of multiple structural parts make it difficult for traditional liquid crystal display devices to achieve a small thickness.
  • the middle frame needs to have a specific shape to meet the limit fixing requirements of the optical components, the backplane, and the liquid crystal panel.
  • the thickness of the middle frame limits the reduction in the thickness of the display device.
  • the purpose of the present application is to provide a liquid crystal display device and its integrated backplane to meet the use requirements of sharp-angle liquid crystal panels in liquid crystal display devices, reduce product costs, and facilitate production.
  • the integrated backplane includes an integrally arranged backplane body and side frame; the side frame includes a plurality of straight frames bent from the edge of the backplane body together and a wrap angle connecting adjacent two straight frames; the package The two sides of the corner are respectively connected with the two straight frames smoothly; in the direction away from the main body of the back plate, the wrap angle gradually slopes outward.
  • the integrated backplane includes a backplane body and a side frame.
  • the side frame is integrally provided with the back plate body.
  • the side frame includes a plurality of straight frames and corners.
  • the plurality of straight frames are bent together from the edge of the back plate body.
  • the wrap corner connects two adjacent straight borders, and the two sides of the wrap corner are respectively smoothly connected with the two straight borders. In a direction away from the back plate body, the wrap angle gradually slopes outward.
  • the liquid crystal panel is installed in an area defined by the side frame, and is located at an end of the side frame away from the back plate body.
  • Another aspect of the present application relates to a method for manufacturing an integrated backplane.
  • the method includes: cutting off the excess material on the outside of the cutting line along the preset cutting line; bending along the preset bending line on the remaining plate, inside the bending line
  • the first area is formed as the back plate body of the back plate
  • the second area outside the bending line is formed as a side plate of the back plate, any two adjacent side plates are connected to form a corner
  • the edge portion of the side plate is bent inward by 180 °; the corner portion is pressed outward in a direction away from the main body of the back plate to form a wrap angle gradually inclined outward.
  • FIG. 1 is a cross-sectional view of an upper structure of a liquid crystal display device using an integrated backplane.
  • FIG. 2 is a schematic structural diagram of an integrated backplane in related technical solution 1.
  • FIG. 3 is a view from the direction A of FIG. 2.
  • FIG. 4 is a schematic structural diagram of an integrated backplane in a related technical solution two.
  • FIG. 5 is a side view of FIG. 4.
  • FIG. 6 is an exploded view of the structure of one corner of the liquid crystal display device of the embodiment of the present application.
  • FIG. 7 is a schematic front view of one corner of the integrated backplane according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the back structure of FIG. 7.
  • FIG. 9 is a view from the direction C of FIG. 7.
  • Fig. 10 is a D-direction view of Fig. 7.
  • FIG. 11 is a schematic view of the structure when the liquid crystal panel is installed in the back plate in FIG. 7.
  • 12 and 13 are schematic diagrams of the theoretical calculation of the radius r size of the wrap angle opening.
  • FIG. 14 is a schematic diagram of the production process of the integrated backplane in FIG. 7.
  • 15 is an exploded view of another structure of a corner portion of the liquid crystal display device of the embodiment of the present application.
  • Back panel 11. Back panel main body; 12. Side frame; 121, Straight frame; 122, Wrap angle; 1201, First outer frame part; 1202, First hemming part; 1201 ', Second outer frame part ; 1202 ', the second folded part; 110, the first area; 120, the second area; 12s, the side panel; 2, the plastic frame; 21, the installation groove; 22, the groove; 23, the yield groove; 3. Liquid crystal panel; 31, side; 32, corner.
  • the integrated backplane 1 is formed by bending, and includes a backplane body 11 and a side frame 12 bent forward from the edge of the backplane body 11.
  • the side frame 12 extends from the edge of the backplane body 11 Front extension.
  • a housing cavity capable of accommodating a liquid crystal panel, electronics, optical components, and the like is formed between the back plate body 11 and the side frame 12, and the outer surface of the side frame 12 serves as a side appearance surface of the display device.
  • the liquid crystal panel 3 is located within the range defined by the side frame 12, and the display surface of the liquid crystal panel 3 is not provided with a blocking structure.
  • This integrated backplane structure can replace the structure of the backplane and the middle frame in the traditional display device, reduce the thickness of the display device, and at the same time reduce the number of structural parts in the display device, reduce the material cost, simplify the module support, improve the overall Machine productivity.
  • the side frame of the integrated backplane 1a has a continuous structure.
  • the side frame includes a plurality of straight frames 121a and a corner 122a connecting two adjacent straight frames 121a.
  • the straight frame 121a and the wrap angle 122a are bent and formed from the edge of the back plate body 11a together.
  • the straight frame 121a is a flat plate, and the two adjacent straight frames 121a are perpendicular;
  • the wrap angle 122a is a circular arc plate shape, and the edges of the wrap angle 122a are parallel on both sides, and are smoothly connected with the adjacent two straight frames 121a, and the two straight frames 121a Tangent to the wrap angle 122a, respectively.
  • Such an integrated backplane 1a is only applicable to a liquid crystal panel 3a having rounded corners 32a (hereinafter referred to as rounded liquid crystal panel), and the corner 32a of the rounded liquid crystal panel 3a is opposed to the wrap angle 122a of the integrated backplane 1a.
  • the side frame of the integrated backplane 1b is composed of a plurality of spliced straight frames 121b, and each straight frame 121b is bent from each side of the backplane body 11b, respectively.
  • the two adjacent straight frames 121b are spliced at the ends, wherein the end surface of the straight frame 121b and the inner surface of the other straight frame 121b are welded and fixed, and the weld seam 13b is polished and flattened after welding.
  • the corner of the integrated backplane 1b of this structure is a right-angle structure, which can meet the use of the sharp-angled liquid crystal panel 3b.
  • the corner material needs to be punched out by, for example, a punching machine , So that each straight frame 121b is bent and formed separately, and welding and grinding processes are required after bending.
  • the cost of forming method using grinding and welding process is about 1.5 US dollars.
  • the cost advantage of the second solution is relatively large.
  • the manufacture of the integrated backplane requires an expensive laser welding machine and automatic grinding machine, and the production cycle of the automatic welding equipment is about 15s (seconds); the production cycle of the automatic grinding equipment is about 50s, that is, the welding of a single backplane, The grinding molding cycle is 65s.
  • the present application proposes a liquid crystal display device and its integrated backplane.
  • the liquid crystal display module of the liquid crystal display device is placed and fixed by using the accommodating space formed inside the integrated backplane.
  • the liquid crystal display device may be, for example, a liquid crystal television.
  • FIG. 6 illustrates an exploded view of the structure of a corner of a liquid crystal display device according to an embodiment of the present application, in which an integrated backplane 1 (hereinafter referred to as backplane 1) includes a backplane body 11 and is bent from the edge of the backplane body 11
  • the side frame 12, the back plate body 11 and the side frame 12 form an accommodation space for the liquid crystal display module.
  • the corner or wrap 122 of the side frame 12 is slightly inclined outward in the direction away from the backboard body 11 so that the corner portion of the receiving space is placed at the end away from the backboard body 11 to have a relatively large space.
  • the liquid crystal display module (not labeled in the figure) includes a plastic frame 2, an optical component (not shown in the figure) disposed in the plastic frame 2, and a liquid crystal panel 3 fixed on the surface of the plastic frame 2.
  • the plastic frame 2 can be formed by plastic injection molding, and a mounting groove 21 for mounting optical components is provided on the plastic frame 2.
  • the specific structure of the plastic frame 2 can be designed according to actual needs.
  • the plastic frame 2 can be a spliced structure, which is formed by splicing multiple frames. Referring to FIG. 1 together, the plastic frame 2 may be fixed on the back plate main body 11 and / or the side frame 12 by bonding or other feasible methods, and the plastic frame 2 is generally arranged on the side frame 12. Wherein, the corner of the plastic frame 2 is adapted to the shape of the corner of the backboard 1, and has a taper angle design inclined outward.
  • the optical component may be, for example, an LED light bar, a diffusion plate, a light guide plate, and the like.
  • the optical component can be installed in the installation slot 21 of the plastic frame 2 in a side-entry or direct-down manner.
  • the LED light bar can be installed in the installation slot in a side-in or direct-down manner.
  • the corner position of the plastic frame 2 may also be designed as a cylindrical arc structure.
  • the other structure of the plastic frame 2 may be the same as the structure of FIG. 6.
  • the corner position of the plastic frame 2 will have a small gap with the corner position or wrap angle of the backboard 1, but the main part of the plastic frame 2 and the backboard 1 can still maintain a reliable fixed connection.
  • the liquid crystal panel 3 can be fixed on the surface of the plastic frame 2 by bonding or other feasible methods, for example, a surface parallel to the back plate body 11.
  • the surface of the plastic frame 2 is provided with a groove 22, and the liquid crystal panel 3 can be fixed by bonding a glue strip or applying glue in the groove 22.
  • the corner 32 of the liquid crystal panel 3 has a sharp angle of 90 °.
  • the present application has specially designed the corner structure of the backplane 1, the following specific Introduction.
  • the so-called “safe distance” refers to: in order to prevent the liquid crystal panel from being broken due to the pressure of the back plate, the minimum allowable distance between the edge of the liquid crystal panel and the edge of the back plate.
  • the safety distance between the liquid crystal panel and the backplane is 0.3 mm to 0.6 mm. If the safety distance is too small, fragments may easily occur, and if the distance is too large, material cost is wasted.
  • the orientation of the top, bottom, left, right, front, and back in this article is based on the state of the liquid crystal display device when it is used.
  • the screen of the liquid crystal display device (that is, the display surface of the liquid crystal panel) is the front, and the opposite direction is the rear.
  • the side frame 12 is bent forward from the edge of the back plate body 11, and the liquid crystal panel 3 is fixed on the front side surface of the plastic frame 2.
  • the outline of the edge of the back plate body 11 is rectangular, which defines the outer outline shape of the display device.
  • the back panel body 11 can be provided with a corresponding mounting structure according to actual needs for the installation of other components of the display device or for cooperating with other structures. Holes (not shown) and so on.
  • some recessed parts or convex parts can also be formed on the back plate body 11 by stamping or the like to increase the strength.
  • the specific structure of the back plate body 11 can be designed and manufactured according to actual needs.
  • the structure at the upper right corner of the backplane 1 is illustrated.
  • the upper left corner of the backplane 1 may have a symmetrical structure, that is, the two corners of the upper part of the backplane body 11 have rounded transitions.
  • the upper edges of the back plate body 11 are respectively in smooth transition with the left and right edges.
  • the side frame 12 is an integral continuous structure, corresponding to the above structure of the back plate body 11, that is, in the case of two left and right symmetrical corners of the upper portion of the back plate body 11, the side frame 12 is composed of three straight frames 121 and two packages Angle 122 constitutes.
  • the straight frame 121 and the wrap angle 122 are bent forward from the edge of the back plate body 11 together.
  • a structure such as a decorative strip is added to the bottom of the side frame 12 to form a complete rectangular outer frame, and supports the liquid crystal panel 3.
  • the straight frame 121 is in the shape of a flat plate, and the three straight frames 121 are respectively connected to the left and right edges and the upper edges of the backboard body 11 respectively.
  • the cross section of the wrap angle 122 is in an arc shape, and the two wrap angles 122 correspond to the two corners of the upper part of the back plate body 11.
  • the two sides of the wrap angle 122 are respectively connected to the two straight frames 121 smoothly and smoothly.
  • the center angle of the arc of the cross section of the wrap angle 122 is 90 degrees, that is, the angle between the two adjacent straight frames 121 is equal.
  • the two ends of the arc section of the wrap angle 122 correspond to the two sides of the wrap angle 122, that is, the two ends of the arc are connected to the two straight frames 121 respectively.
  • the straight frame 121 includes a first outer frame portion 1201 and a first flange portion bent inward from the front end of the first outer frame portion 1201 to fit inside the first outer frame portion 1201 (that is, bent inward by 180 °) 1202.
  • the corner 122 includes a second outer frame portion 1201 'and a second flange portion 1202' that is bent inward from the front end of the second outer frame portion 1201 'to fit inside the second outer frame portion 1201'.
  • the rear ends of the first outer frame portion 1201 and the second outer frame portion 1201 ' are connected to the back plate body 11.
  • the first outer frame portion 1201 and the second outer frame portion 1201 ' are used to form a side appearance surface of the display device, and the heights of the first outer frame portion 1201 and the second outer frame portion 1201' define the thickness dimension of the display device.
  • the front end surface of the first flange portion 1202 and the front end surface of the first outer frame portion 1201 form an arc surface
  • the front end surface of the second flange portion is similar to the front end surface of the second outer frame portion
  • a circular arc surface is formed, so that the arrangement of the first flanged portion 1202 and the second flanged portion can make the front end of the back plate 1 have a rounded structure, improving the appearance of the display device without the need for the side frame 12 and the corners
  • the front end of 122 is attached with additional decorative pieces.
  • the heights of the first flange portion 1202 and the second flange portion 1202 ' are respectively about 1/3 to 1 of the height of the corresponding first outer frame portion 1201 and second outer frame portion 1201' / 2, for example 1/3, 5/12, 1/2.
  • the outer peripheral portion of the front end of the plastic frame 2 is provided with a relief groove 23.
  • the first outer frame portion 1201 and the first flange portion 1202 of the straight frame 121 are both in the shape of a flat plate; the second outer frame portion 1201 'and the second flange portion 1202' of the wrap 122 are both in the shape of a circular arc.
  • the second outer frame portion 1201 'of the beveled corner 122 is smoothly connected with the first outer frame portion 1201' of the straight bezel 121; Connect smoothly.
  • the wrap angle 122 gradually slopes outward. As shown in FIG. 8, the outer surface of the wrap 122 can be seen from the back or rear of the backboard body 11, because the front end of the wrap 122 protrudes outward from the corner of the backboard body 11.
  • the shape of the wrap angle 122 can be regarded as: the shape of a portion of a tapered structure inclined outwardly corresponding to a center angle of 90 degrees. As shown in FIG.
  • the maximum angle ⁇ of the wrap angle 122 inclined outward is 2 ° to 8 °, that is, between the center line of the outer surface of the wrap angle 122 extending in the longitudinal direction of the wrap angle and the following cut plane M of the wrap angle 122
  • the angle is 2 ° to 8 °: the cut plane is a cut plane at the arc edge of the front end of the second outer frame portion, and extends in a direction perpendicular to the back plate body.
  • the angle ⁇ can be selected from 5 ° to 6 °.
  • the wrap angle 122 may be formed by extruding the structure of a cylindrical arc surface (such as the wrap angle shape illustrated in FIG. 3) outward. Any section of the cylindrical arc surface is an arc with a center angle of 90 degrees, and the radius of the arc at each section is the same. In the process of squeezing outward, part of the area at both ends of the arc is plastically deformed, that is, the shape of the arc is squeezed into a flat plate shape, thereby forming a part of the straight frame. After forming into a wrap angle, the center angle of the remaining arc part is still 90 degrees, but the chord length becomes smaller, and accordingly, the arc radius also decreases.
  • a cylindrical arc surface such as the wrap angle shape illustrated in FIG. 3
  • the radius of the cross-sectional arc of the wrap angle 122 gradually decreases in the direction away from the back plate body 11. It can be clearly seen from FIG. 8 that the arc connected to the back plate body 11 has a larger radius, and the arc radius at the front end is the smallest. In the extreme case, the front edge of the second flange portion 1202 'of the wrap angle can be completely squeezed into two perpendicularly intersecting straight lines, that is, the front end of the second flange portion 1202' of the wrap angle 122 will degenerate from a circular arc to At one point, the arc radius of the front end inner surface of the second flange portion 1202 'of the wrap angle 122 can be regarded as zero. As shown in FIG.
  • both sides of the wrap 122 and the joints F of the two straight frames 121 are inclined straight lines, and the distance between the joints F is in the direction away from the back plate body 11 Up gradually decreases. It is obviously different from the parallel sides of the wrap angle in FIG. 3.
  • the side frame 12 is of a continuous structure.
  • the straight frame 121 and the corner 122 are artificially divided according to their respective shapes and positions. There is no need for the straight frame 121 and the corner 122 Splicing, the so-called "seam" does not exist in the actual structure.
  • the liquid crystal panel 3 when the liquid crystal panel 3 is installed in the backplane 1, the liquid crystal panel 3 is located within the range defined by the front end of the side frame 12, that is, as the frontmost display screen of the liquid crystal display device, and faces the viewer when in use.
  • the side portion 31 of the liquid crystal panel 3 is disposed opposite to the first folded portion 1202 of the straight frame 121, and the corner portion 32 of the liquid crystal panel 3 is disposed opposite to the second folded portion 1202 'of the wrap angle 122.
  • the wrap angle 122 is a structure that gradually slopes outward, and the front end of the wrap angle 122 tilts outward to the greatest extent.
  • the space at the wrap angle position of the side frame 12 expands outward and becomes larger
  • the distance between the corner portion 32 of the liquid crystal panel 3 and the wrap angle 122 is helpful to ensure a safe distance between the liquid crystal panel 3 and the side frame 12, and prevents the corner portion 32 of the liquid crystal panel 3 from being easily affected by the small gap between the side frame 12 The problem of force rupture.
  • this structure of the wrap angle of this embodiment has a radius R at the root of the wrap angle (as shown in FIG. 8, R is the radius of the arc of the inner surface where the wrap angle 122 meets the back plate body 11) and
  • the radius r at the opening of the wrap angle (as shown in FIG. 7, r is the arc radius of the inner surface at the second flange portion 1202 'at the front end of the wrap angle 122) is required to be high.
  • the larger the root R the more it can prevent the cracking of the bending root caused by bending extrusion and pulling during the formation of the wrap 122, and the more stable the bending forming process of the wrap.
  • the increase in the root R will also sacrifice the appearance of the display device.
  • the height of the side frame 12 of the backboard 1 is between 7.0 mm and 10.0 mm, and the thickness of the backboard 1 is between 0.6 mm and 1.2 mm.
  • the bending root R ⁇ 3.0 mm the folding can be satisfied The bending process requires preventing cracking. If the bending root R ⁇ 3.0 mm, the bending root is easy to crack during bending molding.
  • the wrap angle root R is 3.0 mm to 6.0 mm
  • the wrap angle opening r is 0 mm to 2.0 mm.
  • the opening r 122 of the wrap angle 122 is less than or equal to 1.0 mm (as shown by the wrap angle indicated by the arc L1 in FIG. 12) 122 inner surface position), to ensure that the corner portion 32 of the liquid crystal panel 3 and the wrap angle 122 will not contact.
  • the opening r of the wrap angle 122 is 0.3mm at the maximum (as shown by the inner surface position of the wrap angle 122 indicated by the arc line L2 in FIG. 12)
  • the distance between the corner portion 32 of the LCD panel 3 and the wrap angle 122 can be guaranteed to reach the minimum safety distance 0.3mm.
  • the opening r of the wrap angle 122 is 1.4 mm (as shown by the wrap angle 122 indicated by the arc line L3 in FIG. 13)
  • the position of the inner surface can ensure that the distance between the corner portion 32 of the liquid crystal panel 3 and the wrap angle 122 reaches the minimum safety distance of 0.3 mm.
  • the opening r of the wrap angle 122 is 1.0 mm (as shown by the inner surface position of the wrap angle 122 indicated by the arc line L4 in FIG.
  • the distance between the corner portion 32 of the liquid crystal panel 3 and the wrap angle 122 is about 0.4 mm;
  • the distance between the corner portion 32 of the liquid crystal panel 3 and the wrap angle 122 is about 0.7 mm, both Within a relatively safe distance.
  • the value range of the root R value at the wrap angle 122 and the size of the opening r value are determined through the above theoretical calculation and verification of the experimental mold.
  • the wrap angle root R From 3.0mm to 6.0mm, the corner opening r, in some embodiments, from 0.3mm to 1.0mm, is compatible with appearance, production process stability and product manufacturability.
  • the present application has at least the following advantages and positive effects: the back panel provided by the present application adopts an integrated structure, the side frame is integrally bent and formed from the edge of the main body of the back panel, and there is no joint seam on the side frame to ensure the appearance effect. More importantly, the corner position of the side frame adopts a special design in which the wrap angle gradually slopes to the outside in the direction away from the main body of the back plate, expanding the inner space of the corner of the side frame.
  • the corner portion of the side frame and the corner of the sharp-angled liquid crystal panel in the present application can have a greater distance, which is beneficial to Ensure a safe distance between the LCD panel and the side frame, and reduce the risk of the LCD panel breaking due to corner forces.
  • the wrap angle since the wrap angle is gradually inclined outward, the junction between the wrap angle and the back plate body does not expand outward.
  • the arc structure with a larger radius can still be used at the joint angle between the wrap angle and the back plate body to prevent cracking and satisfy Bending forming process requirements, easy to manufacture.
  • the backplane itself can be directly formed by stamping without the need for post-processing processes such as welding and grinding.
  • the production cycle of the backplane itself is shortened, improving production efficiency and reducing production costs.
  • the backplane of the present application can realize mass production of a relatively low-cost sharp-angle liquid crystal panel on a liquid crystal display device, and reduce the cost of the display device.
  • the back plate 1 of the present application can be manufactured and formed by the following process, wherein FIG. 14 only illustrates the forming method of the corner position of the back plate 1.
  • FIGS. 14 (c) and 14 (d) The structure after bending is shown in FIGS. 14 (c) and 14 (d), where FIG. 14 (d) is a simplified side view of FIG. 14 (c).
  • the bending in step S200 can be performed in two steps, the first time the part of the second area 120 of the remaining sheet is bent at an angle, such as about 70 °, and the second time is bent to 90 °, which can prevent Direct bending at 90 degrees causes the local side height to increase due to the stretching of the corner material.
  • the hemming forming in step S300 can also be performed in two steps, the first time bending 90 degrees inward, and the second bending 90 degrees inward.
  • the backplane body and the side frame are formed by integral bending, and then the process of pushing and squeezing to the outside expands the corner position outward, increasing the backplane 1
  • the internal space at the corner position that is, the gap between the wrap angle of the back plate and the corner of the sharp-angled liquid crystal panel is increased, which facilitates the installation of the sharp-angled liquid crystal panel.
  • the backplane of the present application expands the internal space at the corner of the backplane by adding a squeezing process to the outside, so that It is suitable for the installation of sharp-angled LCD panels, and the lower-cost sharp-angled LCD panels can be used in the liquid crystal display device.
  • the cost of the liquid crystal display device using the backplane and the sharp-angled liquid crystal panel is compared with the use of rounded corners The liquid crystal display device of the liquid crystal panel can be effectively reduced.
  • the backplane of the present application can save welding and grinding processes during production, reduce the production process, simplify the production process, and only produce the cycle It takes 6 to 7 seconds (seconds) to greatly improve production efficiency.

Abstract

一种液晶显示装置及其一体式背板（1）。一体式背板（1）包括一体设置的背板主体（11）和侧框（12）；侧框（12）包括从背板主体（11）边缘一同折弯出的多个直边框（121）和连接相邻两直边框（121）的包角（122）；包角（122）的两侧部分别与两直边框（121）平滑过渡相接；在沿远离背板主体（11）的方向上，包角（122）逐渐向外侧倾斜。

Description

液晶显示装置及其一体式背板
相关申请的交叉引用
本申请要求于2018年10月31日提交中国专利局、申请号为2018112867097、申请名称为“液晶显示装置及其一体式背板”的中国专利申请、以及于2018年11月23日提交中国专利局、申请号为2018114063305、申请名称为“电视机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示装置技术领域，特别涉及一种液晶显示装置及其一体式背板。
背景技术
当前液晶显示装置市场上，超薄无边框显示装置结构被认为是未来的潮流，超薄显示装置更适合家居壁挂，薄如画艺，形如相框。
传统的液晶显示装置中，为了满足承载液晶面板、固定光学组件以及优化外观效果的功能需求，显示装置的结构骨架主要包括背板、胶框、中框、前壳、后壳等，结构件多，多个结构件的装配需求使得传统的液晶显示装置难以做到较小的厚度。特别是中框需要具有特定的形状以满足光学组件、背板和液晶面板的限位固定需求，中框的厚度尺寸限制了显示装置厚度的减小。
有鉴于此，为了满足尖角液晶面板的使用，一体式背板的结构有必要进行进一步的改进。
发明内容
本申请的目的在于提供一种液晶显示装置及其一体式背板，满足尖角液晶面板在液晶显示装置中的使用需求，降低产品成本，同时便于生产制造。
本申请的一个方面，涉及一种显示装置的一体式背板。一体式背板包括一体设置的背板主体和侧框；所述侧框包括从所述背板主体边缘一同折弯出的多个直边框和连接相邻两直边框的包角；所述包角的两侧部分别与两所述直边框平滑过渡相接；在沿远离所述背板主体的方向上，所述包角逐渐向外侧倾斜。
本申请的另一个方面，涉及一种液晶显示装置，包括液晶面板和一体式背板。所述一体式背板包括背板主体和侧框。所述侧框与所述背板主体一体设置。所述侧框包括多个直边框和包角。所述多个直边框从所述背板主体边缘一同折弯出。所述包角连接相邻两直边框，所述包角的两侧部分别与两所述直边框平滑过渡相接。在沿远离所述背板主体的方向上，所述包角逐渐向外侧倾斜。所述液晶面板安装于所述侧框限定的区域内，并位于所述侧框远离所述背板主体的一端。
本申请的又一个方面，涉及一种一体式背板的制造方法。所述方法包括：将板材沿预先设定的切除线切除掉在所述切除线外侧的多余材料；沿余下的板材上的预先设定的折弯线进行折弯，在所述折弯线内侧的第一区域形成为所述背板的背板主体，在折弯线外侧的第二区域形成为所述背板的侧板，任意相邻两个所述侧板相接形成角部；将所述侧板的边缘部向内弯折180°；将所述角部沿远离所述背板主体的方向向外挤压，形成逐渐向外倾斜的包角。
附图说明
图1是采用了一体式背板的液晶显示装置上部结构的剖视图。
图2是相关技术方案一中一体式背板的结构示意图。
图3是图2的A向视图。
图4是相关技术方案二中一体式背板的结构示意图。
图5是图4的侧向视图。
图6是本申请实施例液晶显示装置其中一角部位置的结构分解图。
图7是本申请实施例一体式背板其中一角部位置的正面结构示意图。
图8是图7的背面结构示意图。
图9是图7的C向视图。
图10是图7的D向视图。
图11是液晶面板安装于图7中背板中时的结构示意图。
图12和图13是包角开口半径r尺寸理论计算的示意图。
图14是图7中一体式背板的生产工艺示意图。
图15是本申请实施例液晶显示装置其中一角部位置的另一结构分解图。
附图标记说明如下：
1、背板；11、背板主体；12、侧框；121、直边框；122、包角；1201、第一外框部；1202、第一折边部；1201’、第二外框部；1202’、第二折边部；110、第一区域；120、第二区域；12s、侧板；2、胶框；21、安装槽；22、凹槽；23、让位槽；3、液晶面板；31、边部；32、角部。
具体实施方式
体现本申请特征与优点的典型实施方式将在以下的说明中详细叙述。应理解的是本申请能够在不同的实施方式上具有各种的变化，其皆不脱离本申请的范围，且其中的说明及图示在本质上是当作说明之用，而非用以限制本申请。
为了实现厚度更薄的无边框显示装置产品，目前可实现的一种方式是采用一体式背板的结构。如图1所示，一体式背板1通过折弯方式成型，包括背板主体11和从背板主体11边缘向前折弯出的侧框12，例如侧框12从背板主体11边缘向前延伸。背板主体11与侧框12之间形成可以容纳液晶面板、电子及光学元器件等的容纳腔，侧框12的外表面作为显示装置的侧部外观面。液晶面板3位于侧框12所限定的范围内，液晶面板3的显示面不设置遮挡结构。这种一体式背板结构可代替传统显示装置中的背板加中框的结构，减小显示装置的厚度，同时减少显示装置中结构件的数量，降低物料成本，简化模组支撑，提高整机的生产效率。
为了得到一体式背板的结构，可采用以下几种方式：
方案一：如图2和图3所示，一体式背板1a的侧框为整体连续的结构，侧框包括多个直边框121a和连接相邻两直边框121a的包角122a。直边框121a和包角122a一同从背板主体11a边缘折弯成型。直边框121a为平板状，相邻两直边框121a垂直；包角122a呈圆弧板状，包角122a两侧边缘平行，并分别与相邻两直边框121a平滑过渡相接，两直边框121a分别与包角122a相切。由于在折弯时，板材的外表面侧受到拉伸作用，会存在向外挤料的问题，在相邻两直边框的连接处即包角的位置，挤料问题最严重，为避免因挤料问题造成折弯根部开裂，包角122a的半径必须不小于3mm。这种一体式背板1a仅适用于角部32a为圆角的液晶面板3a(以下简称圆角液晶面板)，圆角液晶面板3a的角部32a与一体式背板1a的包角122a相对。而对于角部为90°尖角(即角部未设 置成圆角)的液晶面板(以下简称尖角液晶面板)而言，为了保证尖角液晶面板的角部与一体式背板的包角之间的距离大于安全距离，需要增大尖角液晶面板与直边框之间的距离，这样在显示装置外观上将呈现出周边间隙过大的效果，外观效果不好，且增加背板尺寸及成本。同时，圆角液晶面板在制造时需要通过激光切割技术实现角部圆角化，圆角液晶面板的成本比尖角液晶面板的成本高约10美金，成本显著增加。因此，方案一不利于显示装置的低成本化。
方案二：如图4和图5所示，一体式背板1b的侧框由拼接的多个直边框121b构成，各直边框121b分别从背板主体11b的各边部折弯而成，相邻两直边框121b在端部处拼接，其中一直边框121b的端面与另一直边框121b的内表面焊接固定，焊接后再将焊缝13b打磨平整。这种结构的一体式背板1b的角部为直角结构，可以满足尖角液晶面板3b的使用，这种一体式背板1b在成型过程中，需要先通过例如冲压机冲切掉角部材料，以便各直边框121b分别折弯成型，在折弯后还需进行焊接及打磨工序。采用打磨、焊接工艺的成型方式成本大概为1.5美金，整体来看，相较方案一而言，方案二成本优势相对较大。但是，该一体式背板的制造需要配备昂贵的激光焊接机和自动打磨机，且自动焊接设备生产节拍约为15s(秒)；自动打磨设备生产节拍约为50s，即单个背板的焊接、打磨成型周期共65s。这种一体式背板的制造需要增加成型工序及生产周期，且增加周转次数，即将工件从冲压机移至激光焊接机和自动打磨机的次数，进而导致此种结构方案生产效率相对较低，同时周转次数的增加也增加了变形及划伤等不良的出现，降低了生产良率，此外周转次数的增加也会增加人力成本和增加周转辅料费用，例如，通过冲压机形成的冲压件在进行焊接和打磨之前所使用的存储盘等辅料的费用。
针对此，本申请提出一种液晶显示装置及其一体式背板，利用一体式背板内部形成的容纳空间放置并固定液晶显示装置的液晶显示模组。该液晶显示装置例如可为液晶电视机。
图6示意了本申请一实施例中液晶显示装置一角部位置的结构分解图，其中，一体式背板1(以下简称背板1)包括背板主体11和从背板主体11边缘折弯出的侧框12，背板主体11和侧框12之间形成供液晶显示模组放置的容纳空间。侧框12的角部或包角122在沿远离背板主体11的方向上略向外倾斜，使得该容纳空间的角部位置于远离背板主体11的一端具有相对较大的空间。
液晶显示模组(图中未标号)包括胶框2、设置于胶框2内的光学组件(图中未示出)以及固定在胶框2表面的液晶面板3。
胶框2可由塑胶注塑成型，其上设置供光学组件安装的安装槽21。胶框2的具体结构可依实际需求进行设计，胶框2可选为拼接式的结构，由多段边框拼接而成。一并参阅图1，胶框2可通过粘接或其他可行的方式固定在背板主体11和/或侧框12上，胶框2大致贴合于侧框12布置。其中，胶框2的角部与背板1的角部的形状相适配，呈向外倾斜的锥角设计。光学组件例如可为LED灯条，扩散板，导光板等。光学组件可采用侧入式或直下式的方式安装于胶框2的安装槽21内，例如将LED灯条采用侧入式或直下式的方式安装于安装槽内。
在一些实施方式中，如图15所示，胶框2角部位置也可设计为柱状圆弧结构。胶框2的其他结构可与图6的结构相同。在该设计中，胶框2角部位置将与背板1的角部位置或包角具有小间隙，但胶框2主体部分与背板1仍能保持可靠的固定连接。
液晶面板3可通过粘接或其他可行的方式固定在胶框2的表面，例如与背板主体11平行的表面。胶框2的表面在一些实施方式中，设置有凹槽22，可通过在该凹槽22内贴覆胶条或涂抹胶水等方式而粘接固定液晶面板3。
如图6所示，本申请中，液晶面板3的角部32为90°尖角。为了满足该液晶面板3的安装需求，使液晶面板3的角部32与侧框12的角部之间具有足够的安全距离，本申请对背板1的角部结构进行了特殊设计，以下具体介绍。
其中，所谓“安全距离”指的是：为了防止液晶面板因受背板压力而导致破裂的情况发生，液晶面板边缘与背板边缘的最小允许距离。其中，对于尖角的液晶面板，其应力最集中也最容易受背板压力的位置即为其尖角部位。本实施例中，液晶面板与背板之间的安全距离为0.3mm～0.6mm。该安全距离过小易发生破片，距离过大造成物料成本浪费。
为便于表述，如无特殊说明，本文对于上、下、左、右、前、后的方位表述均以液晶显示装置使用时的状态为参考。液晶显示装置的屏幕(即液晶面板的显示面)处为前，相背的方向即为后。根据该定义，侧框12即从背板主体11边缘向前折弯，液晶面板3固定在胶框2的前侧表面上。
背板主体11的边缘轮廓呈矩形，其限定了显示装置的外部轮廓形状。背板主体11可依实际需求设置相应的安装结构以供显示装置的其他部件安装或用于与其他结构配合，例如，背板主体11上可设置用于与显示装置的后壳连接固定的安装孔(图中未示出)等。另外，背板主体11上还可以通过冲压等方式形成一些凹陷部位或凸起部位(图 中未示出)，以增加强度。背板主体11的具体结构可依实际需求进行设计和制造。
参阅图6和图7，其中示意了背板1右上角位置的结构。在一些实施方式中，，背板1左上角可为与此对称的结构，即：背板主体11上部的两个角部具有圆角过渡。相应地，背板主体11的上边缘分别与左右两侧边缘圆滑过渡相接。
侧框12为整体连续结构，相应于背板主体11的上述结构，即在背板主体11上部的左右对称的两个角部的情况下，侧框12由三个直边框121和两个包角122构成。直边框121和包角122一同从背板主体11的边缘向前折弯而成。基于该结构，在形成液晶显示装置时，在侧框12的底部附加如装饰条等结构，形成完整的矩形外框，并支撑液晶面板3。
直边框121呈平板状，三个直边框121分别对应地与背板主体11的左右两侧边缘以及上侧边缘相接。包角122的截面呈圆弧状，两个包角122与背板主体11上部的两个角部对应相接。
包角122的两侧部分别对应地与两直边框121平滑过渡相接。包角122的截面圆弧的圆心角为90度，即与相邻两直边框121之间的夹角相等。包角122截面圆弧的两端对应于包角122的两侧部，即圆弧的两端分别与两直边框121相接。
其中，直边框121包括第一外框部1201和由第一外框部1201前端向内折弯至贴合第一外框部1201内侧(即向内折弯180°)的第一折边部1202。包角122包括第二外框部1201’和由第二外框部1201’前端向内折弯至贴合第二外框部1201’内侧的第二折边部1202’。第一外框部1201和第二外框部1201’的后端与背板主体11相连。第一外框部1201和第二外框部1201’即用于构成显示装置的侧部外观面，第一外框部1201和第二外框部1201’的高度限定了显示装置的厚度尺寸。由第一折边部1202和第二折边部1202’围成的区域则限定出液晶面板3的安装区域，亦即限定了显示装置的显示尺寸。如图6所示，第一折边部1202的前端面与第一外框部1201的前端面形成一个圆弧面，而第二折边部的前端面与第二外框部的前端面类似地形成一个圆弧面，由此，通过第一折边部1202和第二折边部的设置可使背板1前端为圆滑结构，提升显示装置外观效果，而无需在侧框12和包角122的前端附加额外的装饰件。在一些实施方式中，，第一折边部1202和第二折边部1202’的高度分别约为对应的第一外框部1201和第二外框部1201’的高度的1/3～1/2，例如1/3、5/12、1/2。相应于该第一折边部1202和第二折边部1202’，如图6所示，胶框2前端的外周部设有让位槽23。胶框2在安装于背板1内时，该第一折边部1202和第二折边部1202’位于该让位槽23内。
直边框121的第一外框部1201和第一折边部1202均呈平板状；包角122的第二外框部1201’和第二折边部1202’则均呈圆弧状。包角122的第二外框部1201’与直边框121的第一外框部1201’平滑相接；包角122的第二折边部1202’与直边框121的第一折边部1202’平滑相接。
参阅图8和图9，在沿远离背板主体11的方向上，包角122逐渐向外侧倾斜。如图8所示，从背板主体11的背部或后部可以看到包角122的外表面，这是由于包角122前端部向外突出于背板主体11的角部。包角122的形状可以看做是：一个向外倾斜的锥形结构的对应圆心角为90度的部分的形状。如图9所示，包角122向外倾斜的最大角度α为2°～8°，即包角122外表面的沿包角纵向方向延伸的中线与包角122的如下切平面M之间的角度为2°～8°：该切平面为第二外框部的前端的圆弧边缘处的切平面，且沿垂直于背板主体的方向延伸。进一步地，该角度α可选为5°～6°。
在一些实施方式中，该包角122可通过将柱形圆弧面(如图3所示意的包角形状)结构向外挤压而成型。柱形圆弧面的任一截面均为圆心角为90度的圆弧，且各截面处的圆弧的半径均相同。在向外挤压的过程中，圆弧两端的部分区域产生塑性变形，即，由圆弧形状被挤压为平板形状，从而构成直边框的一部分。成型为包角后，剩下的圆弧部分的圆心角仍然为90度，但弦长变小，相应地，圆弧半径也减小。在沿远离背板主体11的方向上，包角122的截面圆弧的半径逐渐减小。根据图8可明显看出，与背板主体11相连处的圆弧具有较大的半径，而前端部处的圆弧半径最小。极限情况下，包角的第二折边部1202’的前端缘可被完全挤压为两条垂直相交的直线，即包角122的第二折边部1202’的前端处将由圆弧退化为一个点，该包角122的第二折边部1202’的前端内表面的圆弧半径可视作0。如图10所示，本实施例中，包角122的两侧部与两直边框121的接缝F均为倾斜的直线，两接缝F之间的距离在沿远离背板主体11的方向上逐渐减小。与图3中包角的两侧边平行具有明显区别。
需要说明的是，本实施例中，侧框12为整体连续的结构，直边框121与包角122为依据各自的形状和位置进行人为划分设定的，直边框121与包角122之间无需拼接，所谓的“接缝”在实际结构中并不存在缝隙。
参阅图11，液晶面板3安装于该背板1中时，液晶面板3位于侧框12前端所限定的范围内，即作为液晶显示装置最前侧的显示屏，在使用时面向观看者。液晶面板3的边部31与直边框121的第一折边部1202相对设置，液晶面板3的角部32与包角122的第二折边部1202’相对设置。因本实施例中，包角122为逐渐向外倾斜的结构，且包 角122前端向外倾斜的幅度最大，基于该结构，在侧框12的包角位置向外扩展了空间，拉大了液晶面板3角部32与包角122之间的距离，利于保证液晶面板3与侧框12之间的安全距离，防止液晶面板3角部32因与侧框12之间间隙过小而容易受力破裂的问题。
值得注意的是，本实施例包角的此种结构对包角的根部的半径R(如图8所示，R即包角122与背板主体11相接处内表面的圆弧半径)及包角开口处的半径r(如图7所示，r即包角122前端的第二折边部1202’处内表面的圆弧半径)要求较高。根部R越大，越能防止包角122成型时因折弯挤料和拉料导致的折弯根部开裂现象，包角的折弯成型过程越稳定。但根部R的增大同时也会牺牲显示装置的外观效果。开口r越小，液晶面板3的角部与背板1的包角之间的距离越大，就更容易达到安全距离。在一些实施方式中，，背板1的侧框12高度在7.0mm至10.0mm之间，背板1的厚度在0.6mm至1.2mm之间，按照折弯根部R≥3.0mm，可以满足折弯成型工艺要求防止开裂。如果折弯根部R＜3.0mm，折弯成型时折弯根部易开裂。在一些实施方式中，包角根部R为3.0mm～6.0mm，包角开口r为0mm～2.0mm。
参阅图12，在液晶面板3边部31与直边框121内表面之间的间隙d1为0.3mm时，包角122开口r≤1.0mm时(如图12中圆弧线L1所示意的包角122内表面位置)，可以保证液晶面板3角部32与包角122不会接触。包角122开口r最大为0.3mm时(如图12中圆弧线L2所示意的包角122内表面位置)，可以保证液晶面板3角部32与包角122之间的距离达到最小安全距离0.3mm。
参阅图13，在液晶面板3边部与直边框121内边缘之间的间隙d2为0.6mm时，包角122开口r为1.4mm时(如图13中圆弧线L3所示意的包角122内表面位置)，可以保证液晶面板3角部32与包角122之间的距离达到最小安全距离0.3mm。当包角122开口r为1.0mm时(如图13中圆弧线L4所示意的包角122内表面位置)，液晶面板3角部32与包角122之间的距离约为0.4mm；当包角122开口r为0.3mm时(如图13中圆弧线L5所示意的包角122内表面位置)，液晶面板3角部32与包角122之间的距离约为0.7mm，均在较适宜的安全距离范围内。
综合来看，本申请的该背板1结构中，包角122处根部R值大小和开口r值的大小取值范围，经过上述的理论计算及实验模具的验证而得到确定，包角根部R在3.0mm～6.0mm，包角开口r，在一些实施方式中，在0.3mm～1.0mm时，可兼容外观、生产制程稳定性及产品可制造性。
由此，本申请至少具有如下优点和积极效果：本申请所提供的背板采用一体结构， 侧框从背板主体边缘一体折弯成型，侧框上无拼接缝，保证外观效果。更重要的是，侧框的角部位置采用了在沿远离背板主体的方向上，包角逐渐向外侧倾斜的特殊设计，扩展了侧框角部的内部空间。当在该背板内安装尖角液晶面板时，相比于采用圆弧板状包角结构的方案，本申请中侧框角部与尖角液晶面板的角部可以具有更大的距离，利于保证液晶面板与侧框之间的安全距离，降低液晶面板因角部受力破裂的风险。同时，由于包角是逐渐向外倾斜的，包角与背板主体相接处未向外扩展，包角与背板主体相接处仍然可以采用较大半径的圆弧结构，防止开裂，满足折弯成型工艺要求，便于制造。背板本身可直接通过冲压成型，而不需要再进行焊接、打磨等后处理工序，背板本身的生产周期缩短，提高生产效率，降低生产成本。本申请的该背板可以实现成本相对较低的尖角液晶面板在液晶显示装置上的量产，降低显示装置的成本。
参阅图14，本申请的该背板1可通过如下工艺制造成型，其中，图14中仅示意背板1角部位置的成型方式。
S100：下料；将板材沿图14(a)中切除线J切除掉多余的部分材料，切除后的板材形状如图14(b)所示。
S200：折弯；按图14(b)中折弯线K对板材进行折弯；位于折弯线K内侧第一区域110处的板材在折弯后构成背板1的背板主体11，位于折弯线K外侧的第二区域120处的板材在折弯后构成垂直于背板主体11的侧板12s。折弯后的结构如图14(c)和图14(d)所示，其中图14(d)为图14(c)简化的侧视图。
其中，步骤S200的折弯可分两步进行，第一次将余下板材的第二区域120处的部分先折弯一定角度，如70°左右，第二次再折弯至90°，可以防止直接折弯90度造成角部材料拉伸导致的局部边高增加。
S300：折边成型；将侧板12s边缘部按图14(d)箭头所示意的方向向内弯折180°，形成折边部。成型后的结构如图14(e)所示。
其中，步骤S300的折边成型也可分两步进行，第一次先向内折弯90度，第二次再向内折弯90度。
S400：侧推挤料；按图14(e)中箭头所示方向将角部向外侧挤压，使得角部逐渐向外倾斜，角部圆弧半径逐渐减小，直至成型为最终的结构，即图14(f)所示的结构。
根据该工艺可看出，本申请的背板中，通过一体折弯的方式成型背板主体和侧框，再附加向外侧推挤压的工序将角部位置向外扩，增加了背板1角部位置的内部空间，即， 增加了背板的包角与尖角液晶面板的角部之间的间隙，便于尖角液晶面板的安装。相比于适用于圆角液晶面板的背板(如上所述的方案一)而言，本申请的背板通过附加向外侧推挤压的工序扩大了背板的角部位置内部空间，从而能够适用于尖角液晶面板的安装，可在液晶显示装置中采用较低成本的尖角液晶面板，综合而言，采用了该背板及尖角液晶面板的液晶显示装置的成本相比采用圆角液晶面板的液晶显示装置可以得到有效降低。相比于适用于尖角液晶面板的背板(如上所述的方案二)而言，本申请的背板在生产时可以省去焊接、打磨工序，减少生产工序，简化生产制程，生产周期仅需6～7s(秒)，大幅提升生产效率。
虽然已参照几个典型实施方式描述了本申请，但应当理解，所用的术语是说明和示例性、而非限制性的术语。由于本申请能够以多种形式具体实施而不脱离发明的精神或实质，所以应当理解，上述实施方式不限于任何前述的细节，而应在随附权利要求所限定的精神和范围内广泛地解释，因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。

Claims (20)

  1. 一种液晶显示装置的一体式背板，包括：
    背板主体；和
    侧框，所述侧框与所述背板主体一体设置，所述侧框包括：
    多个直边框，所述多个直边框从所述背板主体边缘一同折弯出；和
    包角，所述包角连接相邻两直边框，所述包角的两侧部分别与两所述直边框平滑过渡相接；其中
    在沿远离所述背板主体的方向上，所述包角逐渐向外侧倾斜。
  2. 根据权利要求1所述的一体式背板，其中所述包角的截面呈圆弧状，且在沿远离所述背板主体的方向上，所述包角的截面圆弧的半径逐渐减小。
  3. 根据权利要求2所述的一体式背板，其中所述包角通过将柱形圆弧面结构向外挤压而成型。
  4. 根据权利要求2所述的一体式背板，其中所述包角的截面圆弧的圆心角与相邻两所述直边框的夹角相等。
  5. 根据权利要求2所述的一体式背板，其中所述直边框和所述包角均包括与所述背板主体相连的外框部和由外框部端部向内折弯至贴合外框部内侧的折边部；所述包角的外框部与所述直边框的外框部平滑相接；所述包角的折边部与所述直边框的折边部平滑相接；所述包角的外框部和折边部的截面均呈圆弧状。
  6. 根据权利要求5所述的一体式背板，其中所述包角的折边的圆弧半径大致为0mm～2.0mm，所述包角的外框部与所述背板主体相接处的圆弧半径大致为3.0mm～6.0mm。
  7. 根据权利要求2所述的一体式背板，其中所述背板主体的边缘轮廓呈矩形，其中至少两相邻的角部具有圆角；所述包角的数量与所述圆角的数量相应，并且所述包角和所述圆角对应相连。
  8. 根据权利要求1所述的一体式背板，其中所述包角向外倾斜的最大角度大致为2°～8°。
  9. 根据权利要求1所述的一体式背板，其中所述多个侧框为整体连续的。
  10. 一种液晶显示装置，包括：
    液晶面板；和
    一体式背板，包括：
    背板主体；和
    侧框，所述侧框与所述背板主体一体设置，所述侧框包括：
    多个直边框，所述多个直边框从所述背板主体边缘一同折弯出；和
    包角，所述包角连接相邻两直边框，所述包角的两侧部分别与两所述直边框平滑过渡相接；其中，
    在沿远离所述背板主体的方向上，所述包角逐渐向外侧倾斜；所述液晶面板安装于所述侧框限定的区域内，并位于所述侧框远离所述背板主体的一端。
  11. 根据权利要求10所述的液晶显示装置，其中所述包角的截面呈圆弧状，且在沿远离所述背板主体的方向上，所述包角的截面圆弧的半径逐渐减小。
  12. 根据权利要求11所述的液晶显示装置，其中所述包角通过将柱形圆弧面结构向外挤压而成型。
  13. 根据权利要求11所述的液晶显示装置，其中所述包角的截面圆弧的圆心角与相邻两所述直边框的夹角相等。
  14. 根据权利要求11所述的液晶显示装置，其中所述直边框和所述包角均包括与所述背板主体相连的外框部和由外框部端部向内折弯至贴合外框部内侧的折边部；所述包角的外框部与所述直边框的外框部平滑相接；所述包角的折边部与所述直边框的折边部平滑相接；所述包角的外框部和折边部的截面均呈圆弧状。
  15. 根据权利要求10所述的液晶显示装置，其中所述液晶面板呈矩形，其角部为90度尖角。
  16. 根据权利要求10所述的液晶显示装置，还包括胶框，所述胶框固定在所述背板主体、侧框中的至少一个上，所述液晶面板设置在所述胶框的表面上。
  17. 根据权利要求16所述的液晶显示装置，其中在远离所述背板主体的方向上，所述胶框的角部逐渐向外侧倾斜，且与所述包角相配合。
  18. 根据权利要求16所述的液晶显示装置，其中所述胶框还包括让位槽，所述让位槽设置在所述胶框的前端的外周部，所述直边框和所述包角均包括与所述背板主体相连的外框部和由外框部端部向内折弯至贴合外框部内侧的折边部，所述直边框和所述包角两者的所述折边部位于所述让位槽内。
  19. 根据权利要求14所述的液晶显示装置，其中所述液晶面板安装于所述直边框和所述包角两者的所述折边部围成的区域内。
  20. 一种一体式背板的制造方法，包括：
    将板材沿预先设定的切除线切除掉在所述切除线外侧的多余材料；
    沿余下的板材上的预先设定的折弯线进行折弯，在所述折弯线内侧的第一区域形成 为所述背板的背板主体，在折弯线外侧的第二区域形成为所述背板的侧板，任意相邻两个所述侧板相接形成角部；
    将所述侧板的边缘部向内弯折180°；
    将所述角部沿远离所述背板主体的方向向外挤压，形成逐渐向外倾斜的包角。
PCT/CN2019/119232 2018-10-31 2019-11-18 液晶显示装置及其一体式背板 WO2020088693A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114815393A (zh) * 2022-05-27 2022-07-29 合肥京东方视讯科技有限公司 背板组件、背光模组及显示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202613209U (zh) * 2012-03-27 2012-12-19 苏州东山精密制造股份有限公司 一种直下式led背光模组及采用该模组的液晶显示屏
CN202652789U (zh) * 2012-06-29 2013-01-02 冠捷显示科技（厦门）有限公司 一种显示设备的前框拼接结构
US20160062173A1 (en) * 2014-08-28 2016-03-03 Young Lighting Technology Inc. Display device
CN106454174A (zh) * 2013-07-02 2017-02-22 青岛海信电器股份有限公司 一种电视机
CN206369411U (zh) * 2016-12-07 2017-08-01 青岛海尔特种电冰柜有限公司 一种扣接式冷柜内胆
CN207924303U (zh) * 2018-01-25 2018-09-28 江苏凡润电子有限公司 一种液晶显示器双层翻边边框

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202613209U (zh) * 2012-03-27 2012-12-19 苏州东山精密制造股份有限公司 一种直下式led背光模组及采用该模组的液晶显示屏
CN202652789U (zh) * 2012-06-29 2013-01-02 冠捷显示科技（厦门）有限公司 一种显示设备的前框拼接结构
CN106454174A (zh) * 2013-07-02 2017-02-22 青岛海信电器股份有限公司 一种电视机
US20160062173A1 (en) * 2014-08-28 2016-03-03 Young Lighting Technology Inc. Display device
CN206369411U (zh) * 2016-12-07 2017-08-01 青岛海尔特种电冰柜有限公司 一种扣接式冷柜内胆
CN207924303U (zh) * 2018-01-25 2018-09-28 江苏凡润电子有限公司 一种液晶显示器双层翻边边框

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114815393A (zh) * 2022-05-27 2022-07-29 合肥京东方视讯科技有限公司 背板组件、背光模组及显示装置

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