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WO2020182141A1 - 一种液晶显示装置 - Google Patents

一种液晶显示装置 Download PDF

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Publication number
WO2020182141A1
WO2020182141A1 PCT/CN2020/078755 CN2020078755W WO2020182141A1 WO 2020182141 A1 WO2020182141 A1 WO 2020182141A1 CN 2020078755 W CN2020078755 W CN 2020078755W WO 2020182141 A1 WO2020182141 A1 WO 2020182141A1
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WO
WIPO (PCT)
Prior art keywords
frame
side wall
liquid crystal
crystal display
display device
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Application number
PCT/CN2020/078755
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English (en)
French (fr)
Inventor
胥志勇
唐志强
贾文鹏
程宁宁
陈宇
Original Assignee
海信视像科技股份有限公司
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Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Publication of WO2020182141A1 publication Critical patent/WO2020182141A1/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

  • This application relates to the field of liquid crystal display technology, and in particular to a liquid crystal display device.
  • the borderless ultra-thin LCD products have become the key research and development objects of major brands and manufacturers, and they have good market competitiveness in terms of appearance.
  • the borderless LCD products in related technologies are in the sky/left/right
  • the side is fixed to the back plate with aluminum middle frame screws, the product thickness is large, and the sky/left/right sides are wide.
  • a frameless product uses raw steel-plastic panels as the back panel, the aluminum middle frame is fixed to the back panel through a glue dispensing process, and the panel is glued to the aluminum middle frame through a panel tape.
  • the present application provides a liquid crystal display device, which reduces the side width and thickness of the product by embedding the middle frame on the inner side of the back plate with bending edges, and realizes an ultra-thin frameless design.
  • a liquid crystal display device includes a backplane and a middle frame, wherein the backplane includes a bottom plate, and at least one of the sky side, the left side, and the right side that are connected to the bottom plate;
  • the middle frame includes at least one side frame of a sky side frame, a left side frame, and a right side frame;
  • the side edge includes a first side wall connected to the bottom plate and extending in a direction away from the bottom plate.
  • a second side wall part extending in the direction of the bottom plate and a connecting part connected between the first side wall part and the second side wall part; the side frame is disposed on the bottom plate close to the first side wall part on.
  • the side frame is connected to the first side wall portion of the side edge.
  • the bottom plate, the first side wall part, the second side wall part and the connecting part of the back plate are integrally formed.
  • the side frame includes a side wall part and a panel bearing part located at the top of one end of the side wall part.
  • the side frame includes a side wall portion, a diaphragm bearing portion perpendicular to the side wall portion, and a panel bearing portion located at the top of one end of the side wall portion.
  • the liquid crystal display device further includes a first optical film; a bump is provided on the film carrying portion; and an end of the film carrying portion close to the side wall is provided with a side wall When the ears of the first diaphragm are hung on the protrusions, the ends of the ears are located below the protrusions.
  • a light-shielding gasket is attached to the inner side wall of at least one end of the opposite ends of the side frame.
  • At least one of the sky side end, the left side end and the right side end of the bottom plate is provided with a precision positioning rivet post and a limit riveting post for Position the side frame;
  • the side frame includes a first accommodating portion and a second accommodating portion for accommodating the precise positioning rivet column and the limit rivet column, respectively, the accommodating space of the first accommodating portion is smaller than the second The containment space of the containment department.
  • the liquid crystal display device further includes a light guide plate or a diffusion plate, and at least one silicone gasket; the at least one silicone gasket is attached to at least one of the sky side frame along the length direction of the sky side frame In the groove, the silicone gasket is close to the end of the light guide plate or the diffuser plate.
  • the liquid crystal display device further includes a light source located at a side of the liquid crystal display device, and the liquid crystal display device is an edge-type liquid crystal display device.
  • the liquid crystal display device Compared with the related art, the liquid crystal display device provided by the present application has the following advantages and beneficial effects: at least one of the sky side, left side, and right side of the back plate includes a first side wall portion and a second side wall portion And the connecting part, forming a bent edge at the end of the side, and the middle frame of the sky side frame, the left frame and the right frame are built into the back panel, avoiding the use of the front frame and the external aluminum middle frame to reduce the product Edge width and thickness.
  • Figure 1 is an exploded view of part of the liquid crystal display device of this application.
  • Fig. 2 is a front view of the middle frame of the liquid crystal display device of the present application set on the back plate;
  • Figure 3 is a cross-sectional view along the A-A direction in Figure 2;
  • Figure 4 is a cross-sectional view along the direction B-B in Figure 2;
  • Figure 5 is an enlarged view of part C in Figure 3;
  • Figure 6 is an enlarged view of part D in Figure 3;
  • Figure 7 is an enlarged view of part E in Figure 3;
  • Figure 8 is an enlarged view of part F in Figure 4.
  • Figure 9 is an enlarged view of part G in Figure 4.
  • FIG. 10 is a partial cross-sectional view 1 of the sky-side frame of the liquid crystal display device of this application installed in the back plate, which shows the panel, the first optical film and the second optical film;
  • FIG 11 is the second partial cross-sectional view of the liquid crystal display device of this application with the sky side frame installed in the back plate, which shows the panel, the first optical film and the second optical film;
  • FIG. 12 is a partial cross-sectional view 3 of the sky-side frame of the liquid crystal display device of this application installed in the back plate, which shows the panel, the first optical film, and the second optical film;
  • FIG. 13 is a partial cross-sectional view 1 of the left side frame of the liquid crystal display device of the present application installed in the back plate, which shows the panel, the first optical film and the second optical film;
  • FIG. 14 is a partial exploded view of another alternative structure of the sky side frame in the liquid crystal display device of this application, wherein the exploded view shows the back plate, the sky side frame, the panel, the first optical film and the second optical film.
  • FIG. 15 is a partial cross-sectional view of the sky side frame along the H-H direction in FIG. 14 installed in the back plate, which shows the panel, the first optical film and the second optical film;
  • Fig. 16 is an enlarged view of part I in Fig. 1.
  • the present application relates to a liquid crystal display device, which includes a backplane 100 and a middle frame 200.
  • the backplane 100 includes a bottom plate 110, and at least one of the sky side 120, the left side 130, and the right side 140 that are connected to the bottom plate 110.
  • the middle frame 200 includes at least one of the sky side frame 210, the left side frame 220 and the right side frame 230; the sky side 120, the left side 130, or the right side 140 includes and is connected to the bottom plate 110 toward away from the bottom plate 110 First side wall portion extending in the direction.
  • the second side wall portion extending in the direction close to the bottom plate 110 and the connecting portion connected between the first side wall portion and the second side wall portion; the side frame is arranged on the bottom plate 110 close to the first side wall portion.
  • the sky side 120, the left side 130, and the right side 140 of this embodiment have inward bent edges.
  • the back plate 100 includes a bottom plate 110, a first side wall portion 1201 connected to the bottom plate 110 and extending away from the bottom plate 110, a second side wall portion 1202 extending in a direction close to the bottom plate 110, and connected to the first side wall portion 1201 and The connecting portion 1203 between the second side wall portions 1202.
  • the left side 130 includes a first side wall, a second side wall, and a connecting portion
  • the right side 140 also includes a first side wall, a second side wall, and a connecting portion.
  • the bottom plate 110, the first side wall portion, the second side wall portion, and the connecting portion of the back plate 100 are integrally formed to form an integral bending and stamping structure.
  • This type of structure can locally strengthen the product's overall bending resistance strength Under the same strength requirement, the thickness of the back plate 100 can be reduced, and the back plate 100 of this embodiment is made of ordinary galvanized steel, which further reduces the thickness of the product.
  • Figures 10 to 12 are schematic diagrams of the structure of the liquid crystal display device on the side of the sky
  • Figures 10 and 12 are schematic diagrams of the structure of the liquid crystal display device without the diaphragm ears
  • Figure 11 is the liquid crystal display device with the diaphragm ears Schematic.
  • the skyside frame 210 includes a side wall portion 2101, a diaphragm bearing portion 2102 perpendicular to the side wall portion 2101, and a panel bearing portion 2103 located at the top of one end of the side wall portion 2101.
  • the side wall portion 2101 includes an inner side wall 21011 on a side close to the diaphragm carrying portion 2102 and an outer side wall 21012 opposite to the inner side wall 21011.
  • the built-in middle frame 200 may be designed as a sky/left/right frame integrated structure or a sky and/or left and/or right frame splicing structure.
  • the built-in middle frame 200 includes a sky side frame 210,
  • the left side frame 220 and the right side frame 230 are spliced structure, wherein the left end of the sky side frame 210 is matched with the sky side end of the left side frame 220 (for example, snapped), and the right end of the sky side frame 210 is The sky side end of the right side frame 230 is adapted (for example, snapped).
  • the sky side 120 is used to carry the diaphragm, in addition, it is not limited to the sky side 120, and may be at least the left side and the right side. Load on one side or three sides.
  • the middle frame components of the middle frame 200 are built into the back panel 100, that is, the outer side wall 21012 of the sky side frame 210 is pasted to the first side of the sky side edge 120 through the middle frame tape 210'
  • the outer side wall of the left frame 220 is pasted to the inner wall of the left side 130 through the middle frame tape 220'
  • the right frame 230 is pasted to the right side 140 through the middle frame tape 230'.
  • the left frame 220 and the right frame 230 have the same structure and fixing methods.
  • the middle frame tapes 220' to 240' can be 3M RP32 or 3M 5930 substrates, for example, and
  • the original material and processing method of the built-in middle frame 200 can be aluminum extrusion and machining or injection molding, etc. There is no limitation here.
  • Only a short time of holding pressure (for example, 15-20 seconds) can meet the sticking strength requirements, avoid increasing the dispensing pressure holding process, and reduce the difficulty of assembly
  • the assembly production efficiency is improved, and at the same time, the bending of the sky side 120, the left side 130 and the right side 140 can be directly used as a decorative surface, eliminating the need for the appearance of the existing external aluminum middle frame.
  • rivet posts are respectively provided on the sky side end, the left side end and the right side end of the bottom plate 110.
  • five rivet posts are provided at intervals on the sky side end of the bottom plate 110.
  • four rivet posts are arranged at intervals on the left end of the bottom plate 110 to locate the left frame 220, and symmetrically, four rivet posts are arranged at intervals on the right end of the bottom plate 110, Used to position the right frame 230.
  • the middle of the five rivet posts at the sky side end are precision positioning rivet posts, and the rest are limit rivet posts.
  • the inner middle frame 200 is restricted from being forced inwardly. It falls off after the glue is opened.
  • FIG. 3 is a cross-sectional view along the AA direction in FIG. 2
  • FIG. 4 is a cross-sectional view along the BB direction in FIG. 2
  • FIG. 3 is a cross-sectional view along the AA direction in FIG. 2
  • FIG. 4 is a cross-sectional view along the BB direction in FIG. 2
  • FIG. 3 is a cross-sectional view along the AA direction in FIG. 2
  • FIG. 4 is a cross-sectional view along the BB direction in FIG. 2
  • FIG. 3 is a cross-sectional view along the AA direction in FIG. 2
  • FIG. 4 is a cross-sectional view along the BB direction in FIG. 2
  • FIG. 3 is a cross-sectional view along the AA direction in FIG. 2
  • FIG. 4 is a cross-sectional view along the BB direction in FIG. 2
  • FIG. 3 is a cross-sectional view along the AA direction in FIG. 2
  • FIG. 4 is a cross-sectional view along
  • FIG. 3 is the sky side end of the liquid crystal display device. 4 is the right side end of the liquid crystal display device, where FIG. 5 is an enlarged view of part C in FIG. 3, FIG. 6 is an enlarged view of part D in FIG. 3, FIG. 7 is an enlarged view of part E in FIG. 3, and FIG. 8 Fig. 4 is an enlarged view of part F in Fig. 4, and Fig. 9 is an enlarged view of part G in Fig. 4.
  • Figs. 5 and 6 show one of the limit riveting columns 111 and the fine positioning riveting column 112 at the sky side end
  • the side wall portion 2101 of the sky side frame 210 is provided with a receiving portion 2104 for accommodating rivet posts.
  • the sky side frame 210 is provided with an inner recessed groove, and the sky side frame 210
  • the limit rivet column 111 and the fine positioning rivet column 122 extend into the corresponding recessed groove
  • the fine positioning rivet column 112 is used for the assembly and positioning of the sky side frame 210.
  • the limit rivet column 111 is used for the auxiliary positioning of the sky side frame 210.
  • Figures 8 and 9 show one of the limiting rivet column 113 and the fine positioning rivet column 114 at the right end.
  • an inner concave groove is designed on the right frame 230, and the right frame 230 is pasted
  • the limit rivet column 113 and the fine positioning rivet column 124 extend into the corresponding recessed groove
  • the fine positioning rivet column 114 is used for the assembly and positioning of the right frame 230
  • the corresponding fine positioning rivet column 114 is designed.
  • the limit rivet column 113 is used to assist the positioning of the right frame 230.
  • an expansion gap should be reserved.
  • the space of the recessed groove for accommodating the limiting rivet column 113 is larger than the space of the recessed groove for accommodating the precise positioning rivet column 114.
  • the liquid crystal display product of this embodiment is a side-type liquid crystal display product, but the ground side plastic frame, light bar, heat dissipation plate and lower front shell are not shown. Therefore, in order to prevent the product from transmitting light at the junction of the spliced middle frame 100, four light-shielding sheets are provided (only one light-shielding sheet 240 is marked in FIG. 1), and the sky-side and ground-side ends of the left frame 220 are both Light-shielding pads are attached (for example, with tape), and the sky-side and ground-side ends of the right frame 230 are also attached with light-shielding pads to block the penetration from the gaps at the four corners of the middle frame 200. Out of light.
  • the panel 500 is pasted to the built-in middle frame 100 through the panel tape 400. Since the built-in middle frame 100 is a spliced structure, the panel tape 400 is also a spliced structure corresponding to the sky side frame 210, the left frame 220, and the right frame 230 .
  • the limiting rivet column 111 is used for limiting the sky side frame 210; as shown in Figure 11, the sky side end of the first optical film 310 is provided with hanging ears ( Figure 14 shows the hanging ear Ears 311), the hanging ears are provided with hanging holes, and a notch (not shown) is provided on the edge of the top end of the skyside frame 210 to form a diaphragm bearing portion 2102.
  • a bump 211 is provided in the notch.
  • the sky side frame 210 is designed to reserve a groove for attaching a silicone gasket (only one silicone gasket 250 is marked in Figure 1).
  • silicone gaskets are provided in the length direction of 210 (for example, adhesive tape) for pre-positioning of the second optical film 320 (for example, light guide plate or diffuser), and each silicone gasket is close to the second optical film 320.
  • the side ends play a restraining and cushioning role when expanding.
  • At least one hanging ear 311 is provided on the sky side end of the first optical film 310, and each hanging ear 311 is provided with a hanging hole, and Correspondingly, as shown in FIG. 16, at least one accommodating groove 213 is recessed along its length at the upper end of the skyside frame 210 to form a diaphragm carrying portion 2102.
  • each accommodating groove 213 is formed with an opening and the inner wall of the lower end
  • each hanging ear 311 passes through the corresponding protrusion 211 through the corresponding hanging hole, so that the end of the hanging ear 311 The part is close to the bottom of the receiving groove 213, as shown in FIG.
  • the sticking width of the panel tape 410 on the 500-day side of the panel is a key factor affecting the reliability of the panel. The smaller the sticking width, it will easily cause the panel 500 to open the glue, and the ears will darken. As shown in Figure 11, the panel tape 410 is at the bump 211 The sticking width is d3. In some embodiments of the present application, in order to improve the sticking reliability of the 500-day side end of the panel, as shown in FIGS.
  • the opening of the receiving groove 213 is provided with an extension from the bottom of the receiving groove 213
  • the protruding portion 212, the top surface of the protruding portion 212 and the surface of the upper end of the skyside frame 210 are on the same level or the same plane, which widens the adhesive width of the panel tape 410 at the bump 211, as shown in Figure 15
  • the pasting width d4, obviously d4>d3, improves the reliability of product pasting and reduces the risk of glue opening.
  • the hanging ear 311 of the first optical film 310 is hung on the bump
  • the end of the hanging ear 311 is located below the protruding portion 212, which restrains the hanging ear 311 of the first optical film 310 from coming out of the projection 211.
  • the assembly process of the back plate 100 and the middle frame 200 in this embodiment is simple, and the number of structural parts is small, which improves product assembly efficiency and reduces product input costs.
  • the sky side 120, the left side 130, and the right side 140 of the back plate 100 all have inward bending edges, and include a sky side frame 210, a left frame 220, and a right frame
  • the 230’s middle frame 200 is built into the back panel 100, avoiding the use of front frames and external aluminum middle frames, reducing the width and thickness of the product, realizing a frameless large-screen display, and the back panel 100 is directly used as the appearance surface to improve the product
  • the aesthetics enhances the product's selling point; the middle frame 200 is attached to the inner wall of the side of the back plate 100 through the middle frame tape, the assembly process is less difficult, and the product assembly efficiency is improved.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

一种液晶显示装置，包括背板（100）和中框（200），背板（100）包括底板（110）、以及与底板（110）对接的天侧边（120）、左侧边（130）和右侧边（140）中的至少一个侧边；中框（200）包括天侧框（210）、左侧框（220）和右侧框（230）中的至少一个侧框；侧边包括与连接于底板（110）向着远离底板（110）方向延伸的第一侧壁部（1201）、向着靠近底板（110）方向延伸的第二侧壁部（1202）以及连接于第一侧壁部（1201）和第二侧壁部（1202）之间的连接部（1203）；侧框设置在靠近第一侧壁部（1201）的底板（110）上。通过将中框（200）内置在带折弯边的背板（100）内侧，减小产品边宽和厚度，实现超薄无边框设计。

Description

一种液晶显示装置
相关申请交叉引用
本申请要求于2019年03月12日提交中国专利局、申请号为201920310060.1、发明名称为“一种液晶显示装置”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
本申请涉及液晶显示技术领域，具体涉及一种液晶显示装置。
背景技术
无边框超薄液晶显示产品已经成为各大品牌及厂商的重点研究和开发对象，其在外观方面就有良好的市场竞争力，但是相关技术中的无边框液晶显示产品,在天/左/右侧采用铝制中框螺钉固定至背板上，产品厚度大，且天/左/右侧边宽大。目前，一种无边框产品采用钢塑板原材做背板，铝制中框通过点胶工艺固定于背板上，面板通过面板胶带粘在铝制中框上，在该产品的组装工艺上须增加点胶保压工序，组装难度大，且组装效率低，且因铝制中框结构及外观需求，无法做到极窄边宽，并且钢塑板材的厚度是普通镀锌钢板的1.5倍左右，产品厚度大；另一种无边框产品采用普通镀锌钢板做背板，铝制中框通过弹片固定至背板折弯边，增加组装结构件，组装工艺复杂，且背板组装尺寸受弹片影响较大，且因铝制中框结构及外观需求，无法做到极窄边宽。因为无边框产品中含中框，中框的固定方式成为制约无边框产品设计、组装及成本的技术瓶颈。
发明内容
本申请提供一种液晶显示装置，通过将中框内置在带折弯边的背板内侧，减小产品边宽和厚度，实现超薄无边框设计。
为了实现上述技术目的，本申请提供如下技术方案予以实现：
一种液晶显示装置，包括背板和中框，其特征在于，所述背板包括底板、以及与所述底板对接的天侧边、左侧边和右侧边中的至少一个侧边；所述中框包括天侧框、左侧框和右侧框中的至少一个侧框；所述侧边包括与连接于所述底板向着远离所述底板方向延伸的第一侧壁部、向着靠近所述底板方向延伸的第二侧壁部以及连接于所述第一侧壁部和所述第二侧壁部之间的连接部；所述侧框设置在靠近所述第一侧壁部的底板上。
进一步地，所述侧框连接于所述侧边的第一侧壁部上。
进一步，所述背板的所述底板、所述第一侧壁部、所述第二侧壁部和所述连接部一体成型。
进一步地，所述侧框包括侧壁部和位于所述侧壁部一端顶部的面板承载部。
进一步地，所述侧框包括侧壁部、垂直于所述侧壁部的膜片承载部和位于所述侧壁部一端顶部的面板承载部。
进一步地，所述液晶显示装置还包括第一光学膜片；所述膜片承载部上设置有凸块；在所述膜片承载部靠近所述侧壁部的一端设置有从所述侧壁部延伸的凸出部，在所述第一膜片的挂耳挂在所述凸块上时，所述挂耳的端部位于所述凸出部的下方。
进一步地，为了防止拼接式内置中框在角部处漏光，在所述侧框的相对两端的至少一端的内侧壁上贴附有遮光垫片。
进一步地，为了实现内置中框的预定位及防内倾限位，在所述底板的天侧端、左侧端和右侧端中至少一端设置有精定位铆柱和限位铆柱，用于定位所述侧框；所述侧框中包括分别用于收容所述精定位铆柱和限位铆柱的第一收容部和第二 收容部，所述第一收容部的收容空间小于第二收容部的收容空间。
进一步地，所述液晶显示装置还包括导光板或扩散板，以及至少一个硅胶垫片；所述至少一个硅胶垫片沿所述天侧框的长度方向贴附在所述天侧框的至少一个凹槽内，所述硅胶垫片靠近所述导光板或扩散板端部。
进一步地，所述液晶显示装置还包括光源，所述光源位于所述液晶显示装置的侧边，所述液晶显示装置为侧入式液晶显示装置。
与相关技术相比，本申请提供液晶显示装置具有如下优点和有益效果：背板的天侧边、左侧边和右侧边中至少一个侧边包括第一侧壁部、第二侧壁部和连接部，在侧边端部形成折弯边，且天侧框、左侧框和右侧框的中框内置在背板内部，避免使用前框及外置铝制中框，减小产品边宽和厚度。
附图说明
为了更清楚地说明本申请实施例或相关技术中的技术方案，下面将对本申请实施例或相关技术描述中所需要使用的附图作一简要介绍，显而易见地，下面描述的附图是本申请的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图。
图1为本申请液晶显示装置中部分爆炸图；
图2为本申请液晶显示装置中的中框设置在背板上的主视图；
图3为沿图2中A-A方向的截面图；
图4为沿图2中B-B方向的截面图；
图5为图3中C部分的放大图；
图6为图3中D部分的放大图；
图7为图3中E部分的放大图；
图8为图4中F部分的放大图；
图9为图4中G部分的放大图；
图10为本申请液晶显示装置中天侧框安装在背板中的局部截面图一，其中示出了面板、第一光学膜片和第二光学膜片；
图11为本申请液晶显示装置中天侧框安装在背板中的局部截面图二，其中示出了面板、第一光学膜片和第二光学膜片；
图12为本申请液晶显示装置中天侧框安装在背板中的局部截面图三，其中示出了面板、第一光学膜片和第二光学膜片；
图13为本申请液晶显示装置中左侧框安装在背板中的局部截面图一，其中示出了面板、第一光学膜片和第二光学膜片；
图14为本申请液晶显示装置中天侧框的另一种替代性结构的局部爆炸图，其中该爆炸图中示出了背板、天侧框、面板、第一光学膜片和第二光学膜片；
图15为图14中沿H-H方向的天侧框安装在背板中的局部截面图，其中示出了面板、第一光学膜片和第二光学膜片；
图16为图1中I部分的放大图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请涉及一种液晶显示装置，包括背板100和中框200，背板100包括 底板110、以及与底板110对接的天侧边120、左侧边130和右侧边140中的至少一个侧边；中框200包括天侧框210、左侧框220和右侧框230中至少一个侧框；天侧边120、左侧边130或右侧边140包括与连接于底板110向着远离底板110方向延伸的第一侧壁部。向着靠近底板110方向延伸的第二侧壁部以及连接于第一侧壁部和第二侧壁部之间的连接部；侧框设置在靠近第一侧壁部的底板110上。
具体地，如图1、图10至图13所示，本实施例天侧边120、左侧边130和右侧边140具有向内的折弯边，以背板的天侧边120为例，背板100包括底板110、与连接于底板110向着远离底板110方向延伸的第一侧壁部1201、向着靠近底板110方向延伸的第二侧壁部1202以及连接于第一侧壁部1201和第二侧壁部1202之间的连接部1203。相同的，左侧边130包括第一侧壁部、第二侧壁部和连接部，右侧边140也包括第一侧壁部、第二侧壁部和连接部。本实施例中，背板100的底板110、第一侧壁部、第二侧壁部和连接部一体成型，为一体折弯冲压成型的结构，该类型结构可局部加强产品整体抗弯曲变形强度，在同等强度要求下，可减小背板100厚度，且本实施例背板100采用普通镀锌钢板，更进一步减小产品厚度。
图10至图12为天侧边液晶显示装置的结构示意图，图10和图12为液晶显示装置中无膜片挂耳处的结构示意图，图11为液晶显示装置中具有膜片挂耳处的结构示意图。从图10-12中可以看出，天侧框210包括侧壁部2101、垂直于侧壁部2101的膜片承载部2102以及位于侧壁部2101一端顶部的面板承载部2103。侧壁部2101包括靠近膜片承载部2102一侧的内侧壁21011以及与内侧壁21011相对的外侧壁21012。图13为左侧边液晶显示装置的结构示意 图，从图13中可以看出，左侧框220包括侧壁部2201以及位于侧壁部2201一端顶部的面板承载部2202，相比于天侧边，该侧不包括膜片承载部。右侧边与左侧边具有大体相同的结构，在此不再重复。内置中框200可以设计为天/左/右侧框一体式结构或天和/或左和/或右侧框拼接式结构，在本实施例中，内置中框200为包括天侧框210、左侧框220和右侧框230的拼接式结构，其中天侧框210的左侧端与左侧框220的天侧端相适配(例如卡合)，天侧框210的右侧端与右侧框230的天侧端相适配(例如卡合)。需要说明的是，虽然此发明的液晶显示装中，天侧边120用于膜片的承载，但除此之外，不限于天侧边120，也可以是左侧边和右侧边中至少一侧，或三侧边均承载。
如图10至图13为例，中框200的各个中框组件内置在背板100内，即天侧框210通过中框胶带210'将其外侧壁21012粘贴至天侧边120的第一侧壁部1201上，左侧框220通过中框胶带220'将其外侧壁粘贴至左侧边130的内壁上，且右侧框230通过中框胶带230'将其外侧壁粘贴至右侧边140的内壁上，本实施例中，左侧框220和右侧框230的结构及其固定方式均相同，其中，中框胶带220'至240'例如可以为3M RP32或3M 5930基材等，且本实施例中内置中框200的原材及加工方式可以为铝挤成型后机加工或注塑成型等，在此不做限制，在组装时，将对应的中框胶带粘贴于天/左/右侧框的外侧壁，然后直接粘贴固定于对应的侧边内壁上，仅需要短时间的保压(例如15-20秒)即可满足粘贴强度要求，避免增加点胶保压工艺，降低组装难度，同时提高了组装生产效率，且同时天侧边120、左侧边130和右侧边140的折弯可直接做外观装饰面，省去现有外置铝制中框的外观弧面要求，减小产品边宽，增强无边框体验，且省去前壳或前框的厚度，减小产品厚度。
为了定位中框100，在底板110的天侧端、左侧端和右侧端分别设置铆柱，具体地，在本实施例中，在底板110的天侧端间隔设置有五个铆柱，用于定位天侧框210，在底板110的左侧端间隔设置有四个铆柱，用于定位左侧框220，且对称地，在底板110的右侧端间隔设置有四个铆柱，用于定位右侧框230，在本实施例中，天侧端的五个铆柱的中间的铆柱为精定位铆柱，其余为限位铆柱，一方面限制内置中框200受力内倾导致开胶后脱落，另一方面限制内置中框200在膨胀时由精定位铆柱向左右两侧限位铆柱活动，并且，左侧端或右侧端中最上端的靠近与天侧框拼接位置的铆柱为精定位铆柱，其余为限位铆柱，一方面保证天侧框210和左侧框220/右侧框230的拼接闪缝及断差要求，另一方面约束左侧框220/右侧框230只能向地侧方向膨胀；图3为沿图2中A-A方向的截面图，图4为沿图2中B-B方向的截面图，图3为液晶显示装置的天侧端，图4为液晶显示装置的右侧端，其中，图5为图3中C部分的放大图，图6为图3中D部分的放大图，图7为图3中E部分的放大图，图8为图4中F部分的放大图，图9为图4中G部分的放大图，具体地，图5和图6示出了天侧端的其中一个限位铆柱111和精定位铆柱112，对应地，如图10所示，天侧框210的侧壁部2101上开设有收容铆柱的收纳部2104，本申请中，在天侧框210上设计有内凹陷槽，在将天侧框210粘贴至天侧边120内壁上时，限位铆柱111和精定位铆柱122伸入对应凹陷槽内，精定位铆柱112用于天侧框210的装配定位，在设计对应精定位铆柱112的凹陷槽时，应留有装配间隙d2,如图6所示，限位铆柱111用于天侧框210辅助定位，在设计对应限位铆柱111的凹陷槽时，应预留有膨胀间隙d1，如图5所示，其中d1>d2,即用于容纳限位铆柱111的凹陷槽的空间大于用于容纳精定位铆柱112的凹陷槽的空间。类似地，图8和图 9示出了右侧端的其中一个限位铆柱113和精定位铆柱114，对应地，在右侧框230上设计有内凹陷槽，在将右侧框230粘贴至右侧边140内壁上时，限位铆柱113和精定位铆柱124伸入对应凹陷槽内，精定位铆柱114用于右侧框230的装配定位，在设计对应精定位铆柱114的凹陷槽时，应留有装配间隙,如图8所示，限位铆柱113用于右侧框230辅助定位，在设计对应限位铆柱113的凹陷槽时，应预留有膨胀间隙，如图9所示，用于容纳限位铆柱113的凹陷槽的空间大于用于容纳精定位铆柱114的凹陷槽的空间。
本实施例液晶显示产品为侧入式液晶显示产品，但未示出地侧胶框、灯条、散热板及下前壳等部件。因此，为了避免产品在拼接式中框100的连接处透光，设置有四个遮光片(图1中仅标注出一个遮光片240)，在左侧框220的天侧端和地侧端均贴附(例如利用胶带粘贴)有遮光垫片，且右侧框230的天侧端和地侧端也均贴附有遮光垫片，用于挡住从中框200的四个角部处的缝隙透出的光。
面板500通过面板胶带400粘贴至内置中框100上，由于内置中框100为拼接式结构，则面板胶带400也为对应于天侧框210、左侧框220和右侧框230的拼接式结构。具体地，如图10所示，限位铆柱111用于限位天侧框210；如图11所示，第一光学膜片310的天侧端设置有挂耳(图14中示出挂耳311)，挂耳开设有挂孔，在天侧框210顶端的边缘处上开设有缺口(未示出)，形成膜片承载部2102，在缺口内设置有凸块211，在将第一光学膜片310的天侧端由天侧框210承载时，挂耳通过挂孔挂在凸块211上，用于约束第一光学膜片310。此外，如图7和图12所示，天侧框210设计时预留用于贴附硅胶垫片(图1中仅标注出一个硅胶垫片250)的凹槽，本实施例沿天侧框210的长度方向设置 (例如胶带粘贴)四个硅胶垫片，用于第二光学膜片320(例如导光板或扩散板)组装预定位，且各硅胶垫片靠近第二光学膜片320的天侧端，在膨胀时起到约束及缓冲作用。
为了方便第一光学膜片310的定位及装配，如图14和图15所示，第一光学膜片310的天侧端设置有至少一个挂耳311，各挂耳311开设有挂孔，且对应地，如图16所示，在天侧框210的上端沿其长度凹设有至少一个容纳槽213，形成为膜片承载部2102，各容纳槽213的上端形成开口且在其下端的内壁上设置有凸块211，第一光学膜片310的挂耳311通过开口承载在天侧框210上时，各挂耳311通过对应挂孔穿过对应的凸块211，使得挂耳311的端部靠近容纳槽213槽底，如图11所示。
面板500天侧端的面板胶带410的粘贴宽度影响面板可靠性的关键因素，粘贴宽度越小，易导致面板500开胶、挂耳暗影等，如图11示出的面板胶带410在凸块211处的粘贴宽度为d3，在本申请某些实施例中，为了提高面板500天侧端粘贴可靠性，如图14和图15所示，容纳槽213的开口处设置有从容纳槽213的槽底延伸的凸出部212，该凸出部212的顶表面与天侧框210上端的表面处于同一水平面上或为同一平面，增宽面板胶带410在凸块211处的粘贴宽度，如图15示出的粘贴宽度d4，显然d4>d3，提高产品粘贴可靠性，降低开胶风险，且如图15所示，由于凸出部212的设置，在第一光学膜片310的挂耳311挂在凸块211上时，挂耳311的端部位于凸出部212下方，约束第一光学膜片310的挂耳311从凸块211上脱出。
如图1所示，在组装时，将中框胶带粘贴于天侧框210、左侧框220和右侧框230的外侧壁上，将遮光垫片分别贴附于左侧框220和右侧框230的内侧 壁的天侧端和地侧端，将硅胶垫片贴附于天侧框所设计的指定位置；将天侧框210、左侧框220和右侧框230分别贴附于天侧板120内壁、左侧板130内壁和右侧边140内壁，保压15-20秒；然后在组装其他结构件，例如，散热器、地侧铆柱硅胶套、地侧胶框、地侧胶框上密封件、面板等，本实施例中背板100及中框200的组装工艺简单，结构件数量少，提高产品组装效率且降低产品投入成本。
本实施例的液晶显示装置，背板100的天侧边120、左侧边130和右侧边140均具有向内的折弯边，且包括天侧框210、左侧框220和右侧框230的中框200内置在背板100内，避免使用前框及外置铝制中框，减小产品边宽和厚度，实现无边框大屏显示，且背板100直接做外观面，提高产品美观性，提升产品卖点；中框200通过中框胶带贴附在背板100的侧边内壁上，组装工艺难度低，提高产品组装效率。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (10)

  1. 一种液晶显示装置，包括背板和中框，其特征在于，所述背板包括底板、以及与所述底板对接的天侧边、左侧边和右侧边中的至少一个侧边；所述中框包括天侧框、左侧框和右侧框中的至少一个侧框；所述侧边包括与连接于所述底板向着远离所述底板方向延伸的第一侧壁部、向着靠近所述底板方向延伸的第二侧壁部以及连接于所述第一侧壁部和所述第二侧壁部之间的连接部；所述侧框设置在靠近所述第一侧壁部的底板上。
  2. 根据权利要求1所述的液晶显示装置，其特征在于，所述侧框连接于所述侧边的第一侧壁部上。
  3. 根据权利要求1所述的液晶显示装置，其特征在于，所述背板的所述底板、所述第一侧壁部、所述第二侧壁部和所述连接部一体成型。
  4. 根据权利要求1-3中任一项所述的液晶显示装置，其特征在于，所述侧框包括侧壁部和位于所述侧壁部一端顶部的面板承载部。
  5. 根据权利要求1-3中任一项所述的液晶显示装置，其特征在于，所述侧框包括侧壁部、垂直于所述侧壁部的膜片承载部和位于所述侧壁部一端顶部的面板承载部。
  6. 根据权利要求5所述的液晶显示装置，其特征在于，还包括第一光学膜片；所述膜片承载部上设置有凸块；在所述膜片承载部靠近所述侧壁部的一端设置有从所述侧壁部延伸的凸出部，在所述第一膜片的挂耳挂在所述凸块上时，所述挂耳的端部位于所述凸出部的下方。
  7. 根据权利要求1所述的液晶显示装置，其特征在于，在所述侧框的相对两端的至少一端的内侧壁上贴附有遮光垫片。
  8. 根据权利要求1所述的液晶显示装置，其特征在于，在所述底板的天侧端、左侧端和右侧端中至少一端设置有精定位铆柱和限位铆柱，用于定位所述侧框；所述侧框中包括分别用于收容所述精定位铆柱和限位铆柱的第一收容部和第二收容部，所述第一收容部的收容空间小于第二收容部的收容空间。
  9. 根据权利要求1-3中任一项所述的液晶显示装置，其特征在于，还包括导光板或扩散板，以及至少一个硅胶垫片；所述至少一个硅胶垫片沿所述天侧框的长度方向贴附在所述天侧框的至少一个凹槽内，所述硅胶垫片靠近所述导光板或扩散板端部。
  10. 根据权利要求1-3中任一项所述的液晶显示装置，其特征在于，所述液晶显示装置还包括光源，所述光源位于所述液晶显示装置的侧边，所述液晶显示装置为侧入式液晶显示装置。
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CN111445800B (zh) * 2020-04-15 2022-05-03 深圳康佳电子科技有限公司 一种玻璃背板结构及显示装置
TWI815555B (zh) * 2022-07-14 2023-09-11 達擎股份有限公司 顯示裝置

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