CN114935844B - Display device - Google Patents
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- CN114935844B CN114935844B CN202210581710.2A CN202210581710A CN114935844B CN 114935844 B CN114935844 B CN 114935844B CN 202210581710 A CN202210581710 A CN 202210581710A CN 114935844 B CN114935844 B CN 114935844B
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- display panel
- supporting
- support structure
- light
- display device
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
Abstract
The embodiment of the invention provides a display device. The display device comprises a backlight module, a display panel, a front frame, a first supporting structure and a printed circuit board. The display panel is arranged on the light emitting side of the backlight module. The front frame is arranged on the side face of the backlight module, and the front frame abuts against one side, away from the backlight module, of the display panel. The first supporting structure is clamped between the front frame and the backlight module and is used for supporting the display panel. The printed circuit board is arranged in a space which is formed by surrounding between the front frame and the first supporting structure, and is electrically connected with the display panel. According to the invention, the printed circuit board is arranged between the front frame and the first supporting structure, and the first supporting structure is directly used for supporting the display panel, so that the overall thickness of the display device is reduced on the basis of not increasing the frame width of the display device, and the light and thin design of the display device is realized.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
Along with the development of display technology, the light and thin design of display devices has become a trend of display devices. The printed circuit board in the traditional display device is arranged on the back of the backboard in the display device, so that the whole thickness of the display device is thicker, and the light and thin design of the display device is not facilitated. The traditional display device is also provided with a middle frame for supporting the display panel, and the edge of the backboard of the display device is bent to form a bending structure which is clamped with the middle frame. In general, in order to secure the supporting strength of the middle frame, a portion of the middle frame contacting the display panel needs to have a certain thickness, which results in a thicker overall thickness of the display device.
Disclosure of Invention
The embodiment of the invention provides a display device, which is used for reducing the overall thickness of the display device.
The embodiment of the invention provides a display device. The display device comprises a backlight module, a display panel, a front frame, a first supporting structure and a printed circuit board. The display panel is arranged on the light emitting side of the backlight module. The front frame is arranged on the side face of the backlight module, and the front frame abuts against one side, away from the backlight module, of the display panel. The first supporting structure is clamped between the front frame and the backlight module and is used for supporting the display panel. The printed circuit board is arranged in a space which is formed by surrounding between the front frame and the first supporting structure, and is electrically connected with the display panel.
In one embodiment, the display device further includes a flexible circuit board, the flexible circuit board includes a first portion and a second portion bent relative to the first portion, the first portion is at least partially sandwiched between the display panel and the front frame, the second portion is electrically connected to the printed circuit board, and the second portion and the printed circuit board are disposed on the same side of the backlight module.
In one embodiment, the display panel includes a first substrate and a second substrate, the second substrate being located between the first substrate and the backlight module; one side of the second substrate extends outwards relative to the first substrate to form an extension part, and the extension part is clamped between the front frame and the first support structure.
In one embodiment, the display device further includes a driving chip disposed between the extension portion and the front frame; or the driving chip is arranged in the avoidance space.
In one embodiment, the avoidance space includes a mounting slot formed in the front frame and/or the first support structure, and the printed circuit board is at least partially received in the mounting slot.
In one embodiment, the front frame is provided with an access opening, and the front frame is provided with a sealing member for sealing the access opening.
In one embodiment, the display device further includes a second support structure for supporting the display panel, the second support structure is disposed on a side of the backlight module, and the second support structure and the first support structure are disposed on different sides of the backlight module.
In one embodiment, the display device further comprises a cushion pad. The buffer pad is arranged between the display panel and the first support structure and/or the second support structure; or, the first support structure and/or the second support structure is/are bent near one end of the display panel to form an extension structure, and the buffer pad is arranged between the display panel and the extension structure.
In one embodiment, the backlight module is configured as a direct type backlight structure, or the backlight module is configured as a side-in type backlight structure.
In one embodiment, the backlight module comprises an optical film and a light-emitting substrate. A support groove is formed in the first support structure and/or the second support structure at a position corresponding to the optical membrane, the edge of the optical membrane is arranged in the support groove, and the support groove comprises a support surface for supporting the optical membrane; the optical film is attached to the supporting surface.
According to the display device provided by the embodiment of the invention, the printed circuit board is arranged between the front frame and the first supporting structure, so that the printed circuit board is prevented from being arranged on the back of the back plate, and the first supporting structure is directly used for supporting the display panel, so that the overall thickness of the display device is reduced on the basis of not increasing the frame width of the display device, and the light and thin design of the display device is realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of the display device of fig. 1 taken along line A-A.
Fig. 3 is a cross-sectional view of a display device according to a second embodiment of the present invention.
Fig. 4 is a cross-sectional view of a display device according to a third embodiment of the present invention.
Fig. 5 is a cross-sectional view of a display device according to a fourth embodiment of the present invention.
Fig. 6 is a cross-sectional view of a display device according to a fifth embodiment of the present invention.
Fig. 7 is an enlarged view of the display device at E in fig. 6.
Fig. 8 is a cross-sectional view of a display device according to a sixth embodiment of the present invention.
Description of the main reference signs
Seal 122
Cushion pad 230
Light-transmitting groove 250
Light-transmitting glue layer 260
Non-display area 350
Light-emitting substrate 420
Printed circuit board 500
Mounting groove 511
Driving chip 800
The invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a display device 10a according to a first embodiment of the present invention, and fig. 2 is a cross-sectional view of the display device 10a along A-A in fig. 1. The display device 10a includes a front frame 100, a first supporting structure 210, a display panel 300, a backlight module 400, and a printed circuit (Printed Circuit Board, abbreviated as PCB) board 500. The backlight module 400 includes a light-emitting side and a non-light-emitting side, and the display panel 300 is disposed on the light-emitting side of the backlight module 400. The light-emitting side refers to a side that emits light toward the display surface of the display panel 300 so that the display panel 300 can display a picture, that is, a side of the display panel 300 facing the user, and the non-light-emitting side refers to a side opposite to the light-emitting side. The front frame 100 is disposed at a side of the backlight module 400. The first support structure 210 is sandwiched between the front frame 100 and the backlight module 400. The first support structure 210 is used to support the display panel 300. The front frame 100 abuts against one side of the display panel 300 facing away from the backlight module 400, so that the display panel 300 is sandwiched between the front frame 100 and the first supporting structure 210. A space 510 is defined between the front frame 100 and the first supporting structure 210, and the printed circuit board 500 is disposed in the space 510 and electrically connected to the display panel 300. The printed circuit board 500 is used for driving and controlling the display panel 300 to display a visual picture.
In the conventional display device, the middle frame is used for supporting the display panel, in order to ensure the relative fixation of the middle frame and the back plate, the edge of the back plate of the display device is bent to form a bending structure which is clamped with the clamping structure on the middle frame, however, the clamping structure and the bending structure occupy a part of the frame space of the display device. In the display device 10a provided in the first embodiment of the present invention, the printed circuit board 500 is disposed between the front frame 100 and the first supporting structure 210, so that the middle frame is omitted, and the first supporting structure 210 is directly used to support the display panel 300, thereby reducing the overall thickness of the display device 10a without increasing the frame width of the display device 10a, and realizing the light and thin design of the display device 10 a.
The display device 10a further includes a back plate 600 and a second support structure 220 for supporting the display panel 300. The back plate 600 is disposed on the non-light-emitting side of the backlight module 400, and the backlight module 400 is sandwiched between the back plate 600 and the display panel 300. The second support structure 220 is disposed on a side of the backlight module 400, and the second support structure 220 and the first support structure 210 are disposed on different sides of the backlight module 400. In some embodiments, the first support structure 210 and the second support structure 220 are disposed at opposite side surfaces of the backlight module 400.
In the present embodiment, the first support structure 210 is disposed on a side of the back plate 600 facing the display panel 300. The first support structure 210 and the back plate 600 may be fixedly connected together by bonding, clamping, welding, etc. In some embodiments, the first support structure 210 may also be placed directly on the side of the back plate 600 facing the display panel 300 and detachably connected to the back plate 600 to facilitate the disassembly of the display device 10a when a technician inspects the display device 10 a. For example, the first support structure 210, the display panel 300, and the front frame 100 may be stacked in order on a side of the back plate 600 facing the display panel 300, and the first support structure 210, the display panel 300, and the front frame 100 may be abutted against the back plate 600 through the outer frame. The second support structure 220 is disposed on a side surface of the back plate 600, and the second support structure 220 and the back plate 600 can be fixedly connected together by bonding, clamping, welding, and the like. In some embodiments, the back plate 600, the first support structure 210 and the second support structure 220 may be a single structure, and the first support structure 210 and the second support structure 220 may be formed by bending edges of the back plate 600 toward the display panel 300. In some embodiments, an end of the first support structure 210 near the backplate 600 may be disposed at a side of the backplate 600.
The first support structure 210 and the second support structure 220 together constitute a support structure supporting the display panel 300, and edges of the display panel 300 overlap the first support structure 210 and the second support structure 220. The front projection of the first support structure 210 and the second support structure 220 on the display panel 300 may have a shape of a straight line, a U-shape, a polygon, an arc, etc. The shape enclosed by the first support structure 210 and the second support structure 220 is adapted to the shape of the display panel 300, so that the peripheral edges of the display panel 300 are supported, and uneven stress of the display panel 300 is avoided. For example, when the display panel 300 is rectangular, the shape enclosed by the first support structure 210 and the second support structure 220 is also rectangular. For another example, when the display panel 300 is triangular, the shape enclosed by the first support structure 210 and the second support structure 220 is also triangular. Optionally, the first support structure 210 is substantially in a shape of a line, the second support structure 220 is in a shape of a U, opposite ends of the first support structure 210 are connected with the second support structure 220 to form a substantially rectangular integral structure, and the first support structure 210 and the second support structure 220 can be abutted and detachably connected, so that the assembly and disassembly are convenient.
The buffer pad 230 is disposed between the display panel 300 and the first support structure 210 and/or the second support structure 220, and the buffer pad 230 is made of an elastic material, so as to reduce the acting force of the first support structure 210 and/or the second support structure 220 on the display panel 300 when the display device 10a is shocked, and avoid the damage of the edge of the display panel 300 caused by direct collision between the display panel 300 and the first support structure 210 and/or the second support structure 220. In the present embodiment, the buffer pads 230 are disposed between the display panel 300 and the first support structure 210 and the second support structure 220. Preferably, adhesive is provided between the cushion pad 230 and the display panel 300, between the cushion pad 230 and the first support structure 210, and between the cushion pad 230 and the second support structure 220, so that the connection between the display panel 300 and the first and second support structures 210 and 220 is more stable. In some embodiments, the buffer pad 230 may be disposed only between the display panel 300 and the first support structure 210, or only between the display panel 300 and the second support structure 220. For example, when the front frame 100 and the first support structure 210 are fixed at one side of the display panel 300, the cushion pad 230 may be provided only on the second support structure 220, thereby reducing the manufacturing process and manufacturing cost of the display device 10 a.
The first support structure 210, the second support structure 220, and the back plate 600 together enclose an accommodating space 610, and the backlight module 400 is accommodated in the accommodating space 610. In this embodiment, the backlight module 400 is configured as a direct type backlight structure. The backlight module 400 includes an optical film 410 and a light emitting substrate 420. The optical film 410 is sandwiched between the light-emitting substrate 420 and the display panel 300, and the light-emitting substrate 420 is disposed on a side of the back plate 600 close to the display panel 300. The first support structure 210 is disposed on the side of the light-emitting substrate 420 and the optical film 410, and the first support structure 210 is sandwiched between the light-emitting substrate 420 and the printed circuit board 500. The optical film 410 includes a plurality of different optical plates such as a light increasing plate, a quantum dot film, a diffusion plate, a light homogenizing plate, and the like, and the plurality of different optical plates are matched with each other to adjust the light emitted by the light emitting substrate 420, so that the light emitting surface of the backlight module 400 can emit uniform and bright light. The light emitting unit on the light emitting substrate 420 may be any one of a general LED lamp, a mini LED lamp, a micro LED lamp, and an OLED lamp.
Specifically, the light emitting substrate 420 is configured as a lamp panel on which a plurality of light emitting units are disposed in an array. The light emitting unit on the light emitting substrate 420 is configured as a mini LED lamp, which has the advantages of small volume and high light emitting brightness, and can reduce the light mixing distance between the light emitting substrate 420 and the display panel 300, thereby reducing the overall thickness of the display device 10 a. The mini LED lamp is a blue light mini LED lamp. The quantum dot film in the optical film 410 can excite green light and red light with high purity under the irradiation of blue light emitted by the blue light mini LED lamp, and the high-purity red light, green light and blue light can form high-quality white light after light mixing, so that the display device 10a has better optical color gamut value and display effect. The higher light emission luminance of the blue mini LED lamp can also improve the display luminance of the display device 10 a. In some embodiments, the mini LED lamp may be a green mini LED lamp or a red mini LED lamp, which is not particularly limited in the present invention.
The front frame 100 includes a first frame 110 and a second frame 120. The first frame 110 is located at a side of the first support structure 210 away from the backlight module 400, and the printed circuit board 500 is sandwiched between the first frame 110 and the first support structure 210. The second frame 120 is pressed against one side of the display panel 300 away from the first supporting structure 210, so as to fix the display panel 300. The first frame 110, the second frame 120, and the first supporting structure 210 together enclose a space 510 for accommodating the printed circuit board 500.
In this embodiment, the printed circuit board 500 is fixedly connected to a surface of the first support structure 210 facing away from the backlight module 400, and a surface of the printed circuit board 500 on which components (not shown) are disposed faces the first frame 110. The printed circuit board 500 may be fixed on the first support structure 210 by bonding, clamping, or the like. Preferably, the first frame 110 is provided with an access hole 121 at a position corresponding to the printed circuit board 500, so that a technician can access the printed circuit board 500 without completely disassembling the display device 10 a. The front frame 100 is further provided with a sealing member 122 for sealing the access opening 121. When a technician does not overhaul the printed circuit board 500, the sealing member 122 seals the overhaul port 121 to prevent contaminants such as dust, water vapor and the like from outside from polluting the printed circuit board 500.
In some embodiments, the printed circuit board 500 is fixedly connected to a surface of the first frame 110 facing the first support structure 210, and a surface of the printed circuit board 500 on which the components are disposed faces the first frame 110. The printed circuit board 500 may be fixed on the first support structure 210 by bonding, clamping, or the like. Preferably, the printed circuit board 500 is adhered to the first housing 110 through a heat conductive adhesive, so that heat generated from the printed circuit board 500 is dissipated to the outside of the display device 10a through the first housing 110.
The display panel 300 includes a first substrate 310 and a second substrate 320, and the second substrate 320 is located between the first substrate 310 and the backlight module 400. The second substrate 320 has an extension portion 321 extending outward from the first substrate 310 at a side near the first support structure 210, and the extension portion 321 is sandwiched between the front frame 100 and the first support structure 210. The first substrate 310 is an array substrate, the second substrate 320 is a color film substrate, and a liquid crystal layer is disposed between the first substrate 310 and the second substrate 320. The display panel 300 In the present invention may be a Twisted Nematic (TN) type liquid crystal display panel, a vertical alignment (Vertical Alignment, VA) type liquid crystal display panel, an In-Plane Switching (IPS) type liquid crystal display panel, a fringe field Switching (FringeField Switching, FFS) type liquid crystal display panel, or other types of liquid crystal display panels.
The display device 10a further includes a flexible circuit board (Flexible Printed Circuit, abbreviated as FPC) 700, and the display panel 300 and the printed circuit board 500 are electrically connected through the flexible circuit board 700. The flexible circuit board 700 includes a first portion 710 and a second portion 720. The first portion 710 is at least partially sandwiched between the display panel 300 and the front frame 100. Specifically, the first portion 710 is at least partially sandwiched between the extension portion 321 and the first frame 110, an outer lead bonding (Outer Lead Bonding, abbreviated as OLB) area is disposed on a side of the extension portion 321 facing away from the first support structure 210, and the first portion 710 is electrically connected to the OLB area. The second portion 720 is disposed on the same side of the backlight module 400 as the printed circuit board 500, and is electrically connected to the printed circuit board 500. The connection between the second portion 720 and the printed circuit board 500 is located at an end of the printed circuit board 500 near the back plate 600, so that the connection length between the second portion 720 and the printed circuit board 500 is increased, thereby increasing the stability of electrical connection. In some embodiments, the connection between the second portion 720 and the printed circuit board 500 may also be located at an end of the printed circuit board 500 facing away from the back plate 600, so as to avoid interference between the second portion 720 and other components on the printed circuit board 500. Preferably, the second portion 720 is attached to a surface of the front frame 100 facing the space 510, so as to fix the second portion 720. In this embodiment, the printed circuit board 500 is disposed on the first supporting structure 210, so that the flexible circuit board 700 only needs to be bent once, and the working stability of the flexible circuit board 700 is improved.
The display device 10a further includes a driving chip 800 for providing driving signals to the display panel 300, and the driving chip 800 may be disposed on the display panel 300 or the printed circuit board 500. In the present embodiment, the driving Chip 800 is connected to the flexible circuit board 700 to form a Chip On Film (COF) board. The COF technology is a technology for directly fixing a chip on a flexible circuit board and is a technology for packaging a crystal grain soft film, and the flexible circuit board is used as a carrier for packaging the chip, so that the packaging and the electric connection of the chip are realized, and the COF board has reliable electric connection performance and good mechanical bending performance. The position of the driving chip 800 is disposed on the element side of the printed circuit board 500. Preferably, the printed circuit board 500 is provided with a recess 810 corresponding to the driving chip 800, and the driving chip 800 is disposed in the recess 810, so as to avoid interference between the driving chip 800 and other components on the printed circuit board 500, and reduce the thickness of the printed circuit board 500, thereby reducing the spacing distance between the front frame 100 and the first support structure 210, and further reducing the frame width of the display device 10 a. In some embodiments, the driving Chip 800 may also be directly packaged On the printed circuit Board 500 by a soft package (COB) technology to reduce the manufacturing cost of the display device 10 a.
In some embodiments, the driving Chip 800 may also be disposed On the extension 321 and connected to the OLB via Chip On Glass (COG) technology. Preferably, the avoiding groove 810 is formed on the second frame 120, and the driving chip 800 is accommodated in the avoiding groove 810, so as to reduce the overall thickness of the display device 10 a. In some embodiments, the driving chip 800 may be integrated with the flexible circuit board 700 through COF technology, and then the driving chip 800 and the printed circuit board 500 are disposed in parallel in the space 510.
The side of the display panel 300 is provided with a light shielding plate 330 to prevent light leakage at the peripheral edge of the display device 10 a.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a display device 10b according to a second embodiment of the invention. The display device 10b according to the second embodiment of the present invention is similar to the display device 10a according to the first embodiment, except that the first support structure 210 and/or the second support structure 220 are bent at an end near the display panel 300 to form an extension structure. The extension structure is used to increase the contact area between the first support structure 210 and/or the second support structure 220 and the display panel 300, so as to enhance the supporting effect of the first support structure 210 and/or the second support structure 220 on the display panel 300.
In the second embodiment of the present invention, the driving chip 800 is disposed on the extension portion 321 and electrically connected to the OLB area. In this way, the driving chip 800 is disposed on the extension 321, so that the frame width of the display device 10b can be reduced without increasing the overall thickness of the display device 10 b. The second frame 120 has a recess 810 formed on a side facing the extension 321, and the driving chip 800 is accommodated in the recess 810.
Specifically, the first support structure 210 is provided with a first extension structure 211 near one end of the display panel 300, and the second support structure 220 is provided with a second extension structure 221 near one end of the display panel 300. The front projection of the first extension structure 211 on the plane of the display panel 300 is at least partially located outside the front projection of the first support structure 210 on the plane of the display panel 300, and the front projection of the second extension structure 221 on the plane of the display panel 300 is at least partially located outside the front projection of the second support structure 220 on the plane of the display panel 300, so as to increase the contact area between the first support structure 210 and/or the second support structure 220 and the display panel 300. The buffer pads 230 are disposed between the first extension structure 211 and the display panel 300, and between the second extension structure 221 and the display panel.
Preferably, the first support structure 210 and the first extension structure 211, and the second support structure 220 and the second extension structure 221 are integrally formed. The first extension structure 211 is formed by bending one end of the first support structure 210 close to the display panel 300 towards the backlight module 400, and one side of the first support structure 210 away from the backlight module 400 is level with the side surface of the first substrate 310 in the display panel 300; the second extending structure 221 is formed by bending one end of the second supporting structure 220, which is close to the display panel 300, towards the direction of the backlight module 400, and one side of the second supporting structure 220, which is away from the backlight module 400, is flush with the side surface of the first substrate 310 of the display panel 300, so that the accommodating space 610 has a larger space to accommodate the backlight module 400, so as to increase the size of the backlight module 400, thereby increasing the number of light emitting units on the backlight module 400 and improving the display brightness of the display device 10 a. In some embodiments, the first extension structure 211 may be formed by bending an end of the first support structure 210 near the display panel 300 toward a direction away from the backlight module 400; the second extension structure 221 may be formed by bending an end of the second support structure 220 near the display panel 300 toward a direction away from the backlight module 400.
In some embodiments, the first extension structure 211 and the first support structure 210 may be configured as two independent structures, and the first extension structure 211 and the first support structure 210 are fixedly connected together by bonding, clamping, welding, etc.; the second extension structure 221 and the second support structure 220 may be configured as two independent structures, and the second extension structure 221 and the second support structure 220 are fixedly connected together by bonding, clamping, welding, and the like.
In some embodiments, the orthographic projections of the first support structure 210, the first extension structure 211, the second support structure 220, and the second extension structure 221 on the display panel 300 are all located in the display panel 300. Preferably, a side surface of the first support structure 210 or the first extension structure 211 facing away from the backlight module 400 is flush with a side surface of the display panel 300, and a side surface of the second support structure 220 or the second extension structure 221 facing away from the backlight module 400 is flush with a side surface of the display panel 300, so as to reduce a frame width of the display device 10 a.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a display device 10c according to a third embodiment of the invention. The display device 10c according to the third embodiment of the present invention is similar to the display device 10a according to the first embodiment, and is different in that the space 510 includes a mounting groove 511 formed on the front frame 100 and/or the first supporting structure 210, and the printed circuit board 500 is at least partially received in the mounting groove 511, so that the frame width of the display device 10b is further reduced, and a narrow frame design is achieved.
Specifically, the mounting groove 511 is formed on the first support structure 210 facing away from the backlight module 400. Wherein the mounting groove 511 is a blind groove, i.e. the mounting groove 511 does not penetrate the first support structure 210. In some embodiments, the mounting slots 511 may be through slots, i.e., the mounting slots 511 extend through the first support structure 210. Preferably, the shape and size of the mounting groove 511 are matched with those of the printed circuit board 500, and the printed circuit board 500 is clamped in the mounting groove 511. In some embodiments, the front frame 100 and the first supporting structure 210 are provided with mounting slots 511, and the two mounting slots 511 together receive the printed circuit board 500, so as to avoid the problem of insufficient structural strength of the front frame 100 or the first supporting structure 210 caused by the mounting slots 511.
The mounting groove 511 may be formed by removing a part of the first support structure 210, or may be formed by bending the first support structure 210. For example, the mounting groove 511 may be formed by bending an end of the first support structure 210 near the display panel 300 toward a direction away from the backlight module 400.
Referring to fig. 5, fig. 5 is a schematic diagram of a display device 10d according to a fourth embodiment of the invention. The display device 10d according to the fourth embodiment of the present invention is similar to the display device 10a according to the first embodiment, except that the backlight module 400 is configured as a side-in backlight structure. In the side-in type backlight structure, the light emitting substrate 420 is disposed at the side of the optical film 410, which may reduce the thickness of the backlight module 400, thereby reducing the overall thickness of the display device 10 d.
The light emitting substrate 420 is configured as a light bar, and light emitting units are disposed on the light bar at intervals. In this embodiment, the light bar is provided as one bar. The light bar is sandwiched between the optical film 410 and the first support structure 210. The first support structure 210 separates the light bar from the printed circuit board 500. In some embodiments, the light bar may be sandwiched between the optical film 410 and the second support structure 220, so that the light bar and the printed circuit board 500 are located on different sides of the optical film 410, so as to avoid the heat generated by the light bar during the lighting process from affecting the normal operation of the printed circuit board 500. In some embodiments, the light bar may also be provided in a plurality of strips. Preferably, the number of light bars corresponds to the number of sides of the optical film 410, and one light bar is provided on each side of the optical film 410, so that the optical film 410 can emit more uniform and bright light.
Referring to fig. 1, fig. 6 and fig. 7 together, a display device 10e according to a fifth embodiment of the present invention is similar to the display device 10a according to the first embodiment, and is different in that a supporting groove 240 is formed on the first supporting structure 210 and/or the second supporting structure 220 at a position corresponding to the optical film 410, and an edge of the optical film 410 is disposed in the supporting groove 240. The supporting groove 240 includes a supporting surface for supporting the optical film 410, and a side surface of the optical film 410 facing away from the display panel 300 is attached to the supporting surface, so that all light emitted by the light-emitting substrate 420 passes through the optical film 410, and light leakage at the peripheral edge of the display device 10e is avoided. The supporting surface is a groove wall of the supporting groove 240 at a side far away from the display panel 300.
It can be appreciated that due to design errors and manufacturing errors, it is difficult to ensure that the side surface of the optical film 410 is completely attached to the first support structure 210 or the second support structure 220 during the actual assembly process of the display device 10e, so that at the peripheral edge of the display device 10d, a portion of the light emitted from the light emitting substrate 420 directly irradiates the display panel 300, which results in light leakage at the peripheral edge of the display device 10 d. In this embodiment, by disposing the supporting groove 240 and disposing the edge of the optical film 410 in the supporting groove 240, the optical film 410 coincides with the orthographic projection portion of the second supporting structure 220 on the plane of the display panel 300, so that all the light emitted by the light-emitting substrate 420 passes through the optical film 410, thereby solving the problem of light leakage at the peripheral edge of the display device 10 e.
In the present embodiment, the front frame 100 is disposed on the side of the display panel 300 corresponding to the front frame 100, and the first support structure 210 is not provided with the support groove 240 because the front frame 100 has a light shielding effect. In some embodiments, the first support structure 210 and the second support structure 220 are provided with the support groove 240 to better support the optical film 410, and meanwhile, the optical film 410 and the light-emitting substrate 420 can be arranged at intervals, so that the light mixing distance between the optical film 410 and the light-emitting substrate 420 can be conveniently adjusted.
The support groove 240 includes a first groove wall 241 and a second groove wall 242. The first groove wall 241 is parallel to the side surface of the optical film 410, or the first groove wall 241 is substantially parallel to the light emitting direction of the display device 10 d. The second groove wall 242 is parallel to the surface of the optical film 410 facing away from the display panel 300, and the second groove wall 242 is a supporting surface for supporting the optical film 410. The optical film 410 is adhered to the second groove wall 242, so as to prevent the light emitted from the light-emitting substrate 420 from passing through between the optical film 410 and the second groove wall 242.
The display panel 300 includes a display area 340 and a non-display area 350 thereon. The non-display area 350 is disposed around the peripheral edge of the display area 340. The dashed box in fig. 1 and the dashed line B-B in fig. 6 are the boundary lines of the display area 340 and the non-display area 350. In fig. 1, the area inside the dashed box is a display area 340, and the area between the dashed box and the edge of the display device 10e is a non-display area 350.
Referring to fig. 6, in the present embodiment, the optical film 410 extends beyond the line B-B, i.e. the edge portion of the optical film 410 extends from the display area 340 into the non-display area 350. The extension length of the optical film 410 is a predetermined value. Specifically, the optical film 410 includes a first surface 411 and a second surface 412 disposed opposite to each other. The first surface 411 is located on a side of the optical film 410 near the display panel 300, and the second surface 412 is located on a side of the optical film 410 away from the display panel 300. The angle α between the line O-C and the line B-B, which are formed by the junction of the first surface 411 and the side surface of the optical film 410 and the junction O between the display area 340 and the non-display area 350, is greater than or equal to 45 degrees, and the angle between the line O-D and the line B-B, which are formed by the junction of the second surface 412 and the side surface of the optical film 410 and the junction O between the display area 340 and the non-display area 350, is greater than or equal to 30 degrees, so that the user has better viewing experience when viewing the display device 10e at different viewing angles. The junction O between the display area 340 and the non-display area 350 refers to the junction between the display area 340 and the non-display area 350 on the light-emitting surface of the display panel 300. Preferably, the angle between the line connecting the boundary O and the edge of the quantum dot film (not shown) in the optical film 410 and the B-B line is greater than or equal to 30 degrees.
In this embodiment, the supporting groove 240 is formed from one end of the second supporting structure 220 near the display panel 300 to one end far from the display panel 300, and penetrates the end surface of the second supporting structure near the display panel. Thus, there is no shielding between the optical film 410 and the display panel 300 by the second supporting structure 220, and the light transmitted from the first surface 411 of the optical film 410 directly acts on the display panel 300. As shown in fig. 8, in some embodiments, the supporting groove 240 may be a groove formed on a side of the second supporting structure 220 facing the optical film 410, that is, there is a shielding of the second supporting structure 220 between the optical film 410 and the display panel 300. Preferably, a light shielding layer 270 is disposed between the first surface 411 of the optical film 410 and the wall of the supporting groove 240, so as to ensure that the light emitted from the light emitting substrate 420 cannot leak out from the connection between the optical film 410 and the supporting groove 240. In some embodiments, a light shielding layer 270 is also disposed between the side surface of the optical film 410 and the first groove wall 241 of the supporting groove 240.
The second groove wall 242 is provided with a light-transmitting groove 250, and one side of the light-transmitting groove 250 facing the accommodating space 610 is exposed to the accommodating space 610, so that light emitted by the light-emitting substrate 420 can enter the optical film 410 through the light-transmitting groove 250, and the light-transmitting groove can play a role of the optical film 410, thereby increasing the light output at the peripheral edge of the display device 10e and avoiding the problem of dark edges at the peripheral edge of the display device 10 e. The light-transmitting groove 250 is formed from the second supporting structure 220 toward the side surface of the accommodating space 610 and toward the side away from the accommodating space 610, and the depth of the light-transmitting groove 250 is smaller than the depth of the optical film 410 embedded in the supporting groove 240, i.e. the orthographic projection of the light-transmitting groove 250 on the plane of the optical film 410 is located in the optical film 410, and the edge of the second surface 412 of the optical film 410 is always attached to the second groove wall 242. The cross-section of the light-transmitting groove 250 may have a triangular, rectangular, trapezoidal, polygonal, irregular, etc. shape.
Preferably, the light-transmitting groove 250 is provided with a light-transmitting adhesive layer 260, and a side surface of the light-transmitting adhesive layer 260 facing the optical film 410 is flush with the second groove wall 242 so as to jointly support the optical film 410, thereby avoiding an excessively small contact area between the optical film 410 and the supporting groove 240. The second surface 412 of the optical film 410 is adhered to the light-transmitting adhesive layer 260, and a portion of the light emitted by the light-emitting substrate 420 can enter the optical film 410 through the light-transmitting adhesive layer 260.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (9)
1. A display device, comprising:
a back plate;
the backlight module comprises an optical film and a light-emitting substrate, wherein the light-emitting substrate is arranged on the back plate, and the optical film is arranged on one side, away from the back plate, of the light-emitting substrate;
the display panel is arranged on the light emitting side of the backlight module;
a first support structure for supporting the display panel;
the front frame is arranged on the side face side of the backlight module, and the front frame abuts against one side, away from the backlight module, of the display panel; the first supporting structure is clamped between the front frame and the backlight module; the front frame comprises a first frame body and a second frame body, the first frame body is positioned at one side facing the first supporting structure, and the second frame body is propped against one side of the display panel, which is away from the first supporting structure;
the printed circuit board is arranged in a clearance space formed by surrounding the first frame body, the second frame body and the first supporting structure and is electrically connected with the display panel;
the flexible circuit board comprises a first part and a second part which is bent and arranged relative to the first part, the first part is at least partially clamped between the display panel and the front frame, the second part is electrically connected with the printed circuit board, and the second part and the printed circuit board are arranged on the same side of the first supporting structure; the second part is attached to the surface of one side of the front frame, which faces the avoidance space;
the first supporting structure is provided with a supporting groove at a position corresponding to the optical film, the edge of the optical film is arranged in the supporting groove, the supporting groove comprises a first groove wall and a second groove wall, the first groove wall is parallel to the side surface of the optical film, and the second groove wall is a supporting surface for supporting the optical film; the optical film is attached to the supporting surface; the orthographic projection of the supporting surface on the surface of the back plate facing the display panel is positioned outside the light-emitting substrate; a light transmission groove is formed in the second groove wall, and the depth of the light transmission groove is smaller than the depth of the optical film embedded into the supporting groove; the light-transmitting groove is internally provided with a light-transmitting adhesive layer, and light rays emitted by the light-emitting substrate can enter the optical membrane through the light-transmitting adhesive layer.
2. The display device of claim 1, wherein the display panel comprises a first substrate and a second substrate, the second substrate being located between the first substrate and the backlight module; one side of the second substrate extends outwards relative to the first substrate to form an extension part, and the extension part is clamped between the front frame and the first support structure.
3. The display device according to claim 2, further comprising a driving chip disposed between the extension portion and the front frame; or the driving chip is arranged in the avoidance space.
4. The display device of claim 1, wherein the space comprises a mounting slot formed in the front frame and/or the first support structure, the printed circuit board being at least partially received in the mounting slot.
5. The display device according to claim 1, wherein an access opening is formed in the front frame, and a sealing member for sealing the access opening is provided on the front frame.
6. The display device of claim 1, further comprising a second support structure for supporting the display panel, the second support structure being disposed on a side of the backlight module, and the second support structure being disposed on a different side of the backlight module than the first support structure.
7. The display device of claim 6, further comprising a cushion pad;
the buffer pad is arranged between the display panel and the first support structure and/or the second support structure; or alternatively, the process may be performed,
the first support structure and/or the second support structure is/are bent at one end close to the display panel to form an extension structure, and the buffer pad is arranged between the display panel and the extension structure.
8. The display device of claim 6, wherein the backlight module is configured as a direct-lit backlight structure or a side-entry backlight structure.
9. The display device according to claim 6, wherein a supporting groove is formed in the second supporting structure at a position corresponding to the optical film, an edge of the optical film is disposed in the supporting groove, and the supporting groove includes a supporting surface for supporting the optical film; the optical film is attached to the supporting surface.
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| CN202210581710.2A CN114935844B (en) | 2022-05-26 | 2022-05-26 | Display device |
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| CN102608778A (en) * | 2011-12-14 | 2012-07-25 | 友达光电股份有限公司 | Liquid crystal display device with a light guide plate |
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| JP5021102B1 (en) * | 2011-09-30 | 2012-09-05 | シャープ株式会社 | Liquid crystal display |
| US9007756B2 (en) * | 2012-11-29 | 2015-04-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Display device |
| CN103527979B (en) * | 2013-10-12 | 2016-03-30 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN105785616A (en) * | 2016-05-05 | 2016-07-20 | 武汉华星光电技术有限公司 | Liquid crystal display device |
| CN108594536B (en) * | 2018-07-02 | 2021-04-20 | 惠科股份有限公司 | Backlight module and display screen |
| CN208752348U (en) * | 2018-08-27 | 2019-04-16 | 惠科股份有限公司 | Backlight module and display device |
| CN109375403A (en) * | 2018-11-07 | 2019-02-22 | 惠州市华星光电技术有限公司 | Narrow frame display device and preparation method |
| CN109407378B (en) * | 2018-11-13 | 2021-07-23 | 惠州市华星光电技术有限公司 | COF packaging structure of narrow-frame liquid crystal module |
| CN111413825A (en) * | 2020-03-31 | 2020-07-14 | 海信视像科技股份有限公司 | Display device |
| CN113485049A (en) * | 2021-05-31 | 2021-10-08 | 惠科股份有限公司 | Display device |
| CN114185195A (en) * | 2021-12-10 | 2022-03-15 | 苏州华星光电技术有限公司 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20080022273A (en) * | 2006-09-06 | 2008-03-11 | 엘지.필립스 엘시디 주식회사 | Backlight unit, liquid crystal display module including the same |
| CN102608778A (en) * | 2011-12-14 | 2012-07-25 | 友达光电股份有限公司 | Liquid crystal display device with a light guide plate |
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