CN116736578A - display device - Google Patents

display device Download PDF

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Publication number
CN116736578A
CN116736578A CN202210212738.9A CN202210212738A CN116736578A CN 116736578 A CN116736578 A CN 116736578A CN 202210212738 A CN202210212738 A CN 202210212738A CN 116736578 A CN116736578 A CN 116736578A
Authority
CN
China
Prior art keywords
diffusion plate
edge
front side
light guide
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210212738.9A
Other languages
Chinese (zh)
Inventor
胥志勇
张登印
李建春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Visual Technology Co Ltd
Original Assignee
Hisense Visual Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Visual Technology Co Ltd filed Critical Hisense Visual Technology Co Ltd
Priority to CN202210212738.9A priority Critical patent/CN116736578A/en
Publication of CN116736578A publication Critical patent/CN116736578A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means

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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)
  • Planar Illumination Modules (AREA)

Abstract

The present application relates to a display device including: a display panel; the diffusion plate is arranged on the back side of the display panel; the middle frame is arranged on the back side of the edge of the display panel and is arranged on the periphery of the diffusion plate at intervals; the back plate is arranged on the back side of the diffusion plate; the backlight source is arranged on the front side of the backboard; the light guide strip is arranged between the edge of the diffusion plate and the edge of the back plate and is arranged on the periphery of the backlight source; the light guide strip is fixedly arranged on one side of the middle frame facing the diffusion plate, and the edge of the diffusion plate is fixedly arranged on the front side surface of the light guide strip. The edge of the diffusion plate is fixed on the front side surface of the light guide strip, so that the diffusion plate is fixed on the middle frame without additionally arranging structural members, occupation of the diffusion plate to the edge width space is reduced, the width dimension of the frame of the display device is reduced, and the appearance quality of the display device is improved. Meanwhile, the light guide strip can transmit light rays emitted by the backlight source to the edge of the diffusion plate, so that the brightness of the backlight at the periphery is effectively improved, and the display effect of the display device is improved.

Description

Display device
Technical Field
The application relates to the technical field of display, in particular to a display device.
Background
Display devices have been widely used in various electronic products as display parts of electronic apparatuses. The liquid crystal display mainly comprises a back plate, a liquid crystal panel, a middle frame and the like. The structural members on the middle frame are mainly used for supporting and fixing the liquid crystal panel, the back plate, the limiting optical membrane, the diffusion plate and the like.
In a conventional display module, for fixing a diffusion plate, a structural member on a middle frame is required to be pressed at the edge of the front side of the diffusion plate, so that a large side width space is occupied, the area of the exposed middle frame in the front view of the display device is large, and the improvement of the appearance quality of a product is restricted.
Disclosure of Invention
The application aims to provide a display device, so as to optimize the structure of the display device in the related art and improve the appearance quality of the display device.
In order to solve the technical problems, the application adopts the following technical scheme:
according to one aspect of the present application, there is provided a display device including: a display panel; a diffusion plate provided at a back side of the display panel at intervals; the middle frame is arranged on the back side of the edge of the display panel and is arranged on the periphery of the diffusion plate at intervals; the back plates are arranged on the back side of the diffusion plate at intervals; the backlight sources are arranged on the front side of the back plate and are arranged on the back side of the diffusion plate at intervals; the light guide strip is arranged between the edge of the diffusion plate and the edge of the back plate and is arranged on the periphery of the backlight source; the light guide strip is fixedly arranged on one side of the middle frame facing the diffusion plate, and the edge of the diffusion plate is fixedly arranged on the front side surface of the light guide strip.
In some embodiments of the present application, an end surface of the light guide bar facing the backlight source is an inclined surface; the inclined surface is gradually closer to the backlight source in a reverse direction from the back plate toward the diffusion plate.
In some embodiments of the present application, an included angle between the inclined surface and the front side surface of the light guide strip is an acute angle.
In some embodiments of the present application, a first adhesive tape is disposed on the front side of the light guide strip, the first adhesive tape is a light-transmitting adhesive tape, and the back surface of the edge of the diffusion plate is adhered and fixed on the front side of the first adhesive tape.
In some embodiments of the present application, a fixing portion is protruding from a side of the middle frame facing the backlight source, and the fixing portion is disposed on a peripheral side of the backlight source; the light guide strip is arranged on the front side surface of the fixing part; the edge of the backboard is attached to the back of the fixing part.
In some embodiments of the present application, a second adhesive tape is attached to the back surface of the light guide strip, the second adhesive tape is fixed on the front side surface of the fixing portion, and the second adhesive tape has a reflective surface facing the front side of the light guide strip.
In some embodiments of the present application, a positioning column is convexly arranged on the front side surface of the fixing portion, a positioning hole corresponding to the positioning column is formed on the light guide bar, and the positioning column is inserted into the positioning hole; and the positioning hole is positioned in the middle of the light guide strip.
In some embodiments of the present application, a clamping groove is concavely formed on the back surface of the middle frame, and the clamping groove is formed on one side of the fixing portion, which is far from the center of the back plate; the backboard comprises a main body part and a flanging part which is bent and extended to the front side from the edge of the main body part; the main body part is propped against the back surface of the fixing part, and the flanging part is inserted into the clamping groove.
In some embodiments of the present application, the display device further includes an optical film, where the optical film is attached to the front side of the diffusion plate and is disposed on the back side of the display panel; the front side surface of the middle frame is convexly provided with a hanging lug, and the hanging lug is arranged on the back side of the edge of the display panel; the periphery side edge of the optical film is convexly provided with a hanging part, the hanging part is provided with a hanging hole, and the hanging part extends out of the edge of the diffusion plate and is hung on the hanging lug.
In some embodiments of the present application, a first step groove is concavely formed on the front side surface of the middle frame, and the back side of the edge of the display panel is stuck and fixed on the groove surface of the first step groove; the groove surface of the first step groove is concavely provided with a second step groove, the hanging lugs are convexly arranged on the groove surface of the second step groove, and the hanging parts are arranged in the second step groove.
As can be seen from the technical scheme, the embodiment of the application has at least the following advantages and positive effects:
in the display device provided by the embodiment of the application, the light guide strip is additionally arranged between the edge of the diffusion plate and the edge of the backboard, the light guide strip is fixed on one side of the middle frame facing the diffusion plate and is matched with the edge of the diffusion plate to be fixed on the front side of the light guide strip, so that the middle frame is not required to be additionally provided with structural members to fix the diffusion plate, and the structural members are not required to be additionally provided to be pressed at the edge of the front side of the diffusion plate, thereby reducing the occupation of the diffusion plate on the edge width space, being beneficial to narrowing the frame width size of the display device and improving the appearance quality of the display device. Meanwhile, the light guide strip is arranged on the peripheral side of the backlight source, light rays emitted by the backlight source can be transmitted to the edge of the diffusion plate, the brightness of the backlight at the periphery is effectively improved, and the display effect of the display device is improved.
Drawings
Fig. 1 is a front view of a display device according to an embodiment of the application.
Fig. 2 is a cross-sectional view of the top side edge of the display device of fig. 1.
Fig. 3 is a schematic view of the structure of fig. 2 at another view angle.
Fig. 4 is an exploded view of fig. 3.
Fig. 5 is a schematic cross-sectional view of the middle frame of fig. 4.
Fig. 6 is a partial cross-sectional view of the top side edge of the display device of fig. 1 taken along A-A.
The reference numerals are explained as follows: 1. a display panel; 11. a panel adhesive tape; 2. a middle frame; 201. a frame portion; 202. a first step groove; 2021. a first glue groove; 2022. a second step groove; 203. hanging lugs; 204. a clamping groove; 205. a fixing part; 2051. a via hole; 2052. a second glue groove; 206. an assembly groove; 21. a sky side middle frame; 22. a left middle frame; 23. a right middle frame; 3. a diffusion plate; 30. a spacing space; 4. an optical film; 41. a hanging part; 5. a back plate; 51. a main body portion; 52. a hemming section; 6. a backlight; 61. a lamp panel; 62. a lamp body; 7. a reflection sheet; 8. a light guide bar; 81. an inclined surface; 82. a first adhesive tape; 83. a second adhesive tape; 84. positioning holes; 9. a positioning piece; 91. and positioning columns.
Detailed Description
Exemplary embodiments that embody features and advantages of the present application will be described in detail in the following description. It will be understood that the application is capable of various modifications in various embodiments, all without departing from the scope of the application, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Display devices have been widely used in various electronic products as display parts of electronic apparatuses. The liquid crystal display mainly comprises a back plate, a liquid crystal panel, a middle frame and the like. The structural members on the middle frame are mainly used for supporting and fixing the liquid crystal panel, the back plate, the limiting optical membrane, the diffusion plate and the like.
In traditional display module assembly, for fixed diffuser plate, the structure on the center is pressed in diffuser plate leading flank's border department in general needs, and the design reservation diffuser plate inflation's space has all taken great side width space simultaneously, leads to the center area that exposes in the display device front view great, has restricted the promotion of product appearance quality.
For convenience of description, unless otherwise specified, the directions of up, down, left, right, front and rear are all referred to herein with reference to the state of the display device when in use. The screen of the display device (i.e. the display surface of the display panel) is the front, and the opposite direction is the back.
Fig. 1 is a front view of a display device according to an embodiment of the application. Fig. 2 is a cross-sectional view of the top side edge of the display device of fig. 1. Fig. 3 is a schematic view of the structure of fig. 2 at another view angle.
Referring to fig. 1 to 3, the display device provided by the embodiment of the application mainly includes a display panel 1, a middle frame 2, a diffusion plate 3, an optical film 4, a back plate 5, a backlight source 6, a reflective sheet 7 and a light guide bar 8.
The display panel 1 is located at a front side of the display device, and a front side surface of the display panel 1 is a display surface for displaying an image. The display device can be used for electronic products such as televisions, computer monitors, digital photo frames and the like.
The middle frame 2 is in a frame structure, and the middle frame 2 is arranged at the edge of the display panel 1 and extends along the edge direction of the display panel 1. The middle frame 2 is located outside the edge of the display panel 1, and the middle frame 2 can be used for protecting the edge of the display panel 1 and is used as an appearance surface of the periphery of the display device.
The middle frame 2 can be used as a fixed connecting piece for connecting and fixing the structures such as the display panel 1, the optical film 4, the back plate 5, the light guide strip 8 and the like.
Referring to fig. 1, in some embodiments, the middle frame 2 may include a top middle frame 21 located at a top side edge of the display panel 1, a left middle frame 22 located at a left side edge of the display panel 1, and a right middle frame 23 located at a right side edge of the display panel 1. The top side middle frame 21 is used for fixing and protecting the top side edge of the display panel 1, the left side middle frame 22 is used for fixing and protecting the left side edge of the display panel 1, and the right side middle frame 23 is used for fixing and protecting the right side edge of the display panel 1.
It should be noted that, the top middle frame 21, the left middle frame 22, and the right middle frame 23 may be a detachable spliced frame structure or an integrally bent frame structure.
Referring to fig. 2 and 3, in some embodiments, a frame portion 201 extending forward is protruded at an outer edge of a front side of the middle frame 2. A first step groove 202 is formed between the bezel portion 201 and the front side surface of the middle frame 2, and the first step groove 202 extends in the direction of the corresponding edge of the display panel 1. The peripheral edge of the display panel 1 is fixed to the groove surface of the first step groove 202, and the frame 201 is provided on the peripheral side of the display panel 1. In other embodiments, the front side of the middle frame 2 may be directly attached to the front side of the middle frame 2 without providing the frame 201.
The panel adhesive tape 11 is attached to the groove surface of the first step groove 202, and the peripheral edge of the display panel 1 is attached and fixed to the groove surface of the first step groove 202 by the panel adhesive tape 11.
Fig. 4 is an exploded view of fig. 3. Wherein, fig. 2 and 3 are cross-sectional views along the line B-B in fig. 4.
Referring to fig. 2 to 4, in some embodiments, a first glue groove 2021 is concavely formed on a groove surface of the first step groove 202, and the first glue groove 2021 extends along a direction of a corresponding edge of the display panel 1. The panel adhesive tape 11 may be pre-attached and fixed in the first adhesive groove 2021, so that the edge of the display panel 1 is accurately attached and fixed on the panel adhesive tape 11.
Referring to fig. 2 to 4, the diffusion plate 3 is disposed at intervals on the back side of the display panel 1. The diffusion plate 3 serves to guide the direction of light and make the brightness of the light source uniform, thereby providing uniform planar light to the display device. The middle frame 2 is disposed at the periphery of the diffusion plate 3, and a space 30 is provided between the periphery of the diffusion plate 3 and the side wall of the middle frame 2 facing the diffusion plate 3, the space 30 is used for expanding the diffusion plate 3, and the size of the space 30 is related to the expansion value of the diffusion plate 3.
Referring to fig. 2 to 4, the optical film 4 is disposed on the front side of the diffusion plate 3 and is disposed on the back side of the display panel 1, i.e. the optical film 4 is disposed on the light emitting surface of the diffusion plate 3. The optical film 4 serves to improve uniformity of the surface light source. The optical film 4 can further process the light shape of the light emitted by the light emitting surface of the diffusion plate 3 so as to achieve the purpose of homogenizing the surface light source. The optical film 4 can be various, such as a diffusion sheet, a brightness enhancement sheet, a prism sheet or a multifunctional composite bonding film. It will be appreciated that the optical film 4 is provided with one or more layers, and that the layers of optical film 4 are sequentially stacked on the front side of the diffusion plate 3.
Referring to fig. 2 to 4, in some embodiments, a hanging portion 41 is protruding from a peripheral edge of the optical film 4, and a hanging hole (not shown) is formed in the hanging portion 41, where the hanging portion 41 protrudes from the peripheral edge of the diffusion plate 3. At the same time, the front side of the middle frame 2 is convexly provided with a hanging lug 203, and the hanging part 41 passes through the interval space 30 between the diffusion plate 3 and the middle frame 2 and is hung on the hanging lug 203.
Fig. 5 is a schematic cross-sectional view of the middle frame of fig. 4.
Referring to fig. 4 and 5, in some embodiments, a second step groove 2022 is concavely formed on the groove surface of the first step groove 202, and the second step groove 2022 is shaped to fit the hooking portion 41 and is used to receive the hooking portion 41. The hanging tab 203 is formed on the groove surface of the second step groove 2022 in a protruding manner, and the hanging portion 41 extends into and is mounted in the second step groove 2022 and is hung on the hanging tab 203 through the hanging hole.
Referring to fig. 2 to 4, the back plate 5 is disposed on the back side of the diffusion plate 3 at intervals, and the back plate 5 is used for providing an installation space for the backlight source 6 and for structurally supporting the diffusion plate 3, the optical film 4, the reflective sheet 7, and other components.
The peripheral edge of the back plate 5 is fixed to the back side of the middle frame 2. In some embodiments, the back panel 5 includes an integrally bent main body portion 51 and a hemmed portion 52. The main body 51 is disposed parallel to the diffusion plate 3 and is disposed at a distance from the back side of the diffusion plate 3. The backlight 6 and the reflection sheet 7 are attached to the front side surface of the main body 51. The flange portion 52 is formed by bending and extending the edge of the main body portion 51 toward the front side.
Referring to fig. 4 and 5, a clamping groove 204 is concavely formed on the back surface of the middle frame 2, and the clamping groove 204 is formed by extending the back surface of the middle frame 2 to the front side. When the back plate 5 is installed, the edge of the main body 51 is attached to the back side surface of the middle frame 2, and the folded edge 52 is inserted and fixed in the clamping groove 204.
Referring to fig. 2 to 4, the backlight source 6 is disposed on the front side of the back plate 5 and is disposed on the back side of the diffusion plate 3 at intervals. The backlight 6 is used for emitting light to the diffusion plate 3, transmitting the light to the display panel 1 through the diffusion plate 3 and the optical film 4, and further realizing the image display function of the display panel 1. It will be appreciated that the backlight 6 may be an LED light bar or a light source such as a laser.
In some embodiments, the backlight 6 includes a lamp panel 61 and a plurality of lamp bodies 62 disposed on the lamp panel 61. The lamp panel 61 may be an LED lamp panel, and the lamp body 62 is an LED lamp attached to the front side of the lamp panel 61. The lamp panels 61 are provided on the front side of the back plate 5 and are spaced apart from the back side of the diffusion plate 3. The plurality of lamp bodies 62 form a plurality of point light sources to emit light to the diffusion plate 3, respectively.
Referring to fig. 2 to 4, the reflective sheet 7 is attached to the front side of the lamp panel 61, and a plurality of openings are formed in the lamp panel 61 for exposing the lamp body 62 and protruding from the front side of the reflective sheet 7. The reflecting sheet 7 is used to reflect the light emitted from the lamp body 62 toward the diffusion plate 3. The lamp body 62 and the reflecting sheet 7 emit light to the diffusing plate 3, and the diffusing plate 3 can reflect part of the light to the reflecting sheet 7, so that a light mixing space can be formed in the space between the reflecting sheet 7 and the diffusing plate 3, and the effective utilization rate of the light emitted by the lamp body 62 is improved. It should be noted that, in other embodiments, the light panel 61 may be disposed on the front side of the reflective cover 5.
The distance between the reflecting sheet 7 and the diffusion plate 3 is a light mixing distance, and the light mixing distances with different parameters have an important influence on the display effect of the display panel 1. The Mini-LED backlight technology is developed and applied in ultrathin direct type products, a large number of Mini-LED chips can be densely arranged, and a smaller light mixing distance can be obtained, so that the thin design of the liquid crystal display device is realized.
Referring to fig. 2 to 4, the light guide bar 8 is disposed at the periphery of the backlight source 6 and between the edge of the diffusion plate 3 and the edge of the back plate 5. The light guide strips 8 are used for fixing the peripheral edge of the diffusion plate 3, and transmitting the light emitted from the backlight source 6 to the periphery to the edge of the diffusion plate 3, so that the brightness of the backlight at the periphery is improved.
The light guide strip 8 is fixed on one side of the middle frame 2 facing the diffusion plate 3, and is arranged on the front side of the edge of the diffusion plate 3, and then the edge of the diffusion plate 3 can be fixed on the middle frame 2, the diffusion plate 3 does not need to be fixed by structural members of other middle frames 2, the front side of the diffusion plate 3 does not need to be pressed by structural members of other middle frames 2, further occupation of the diffusion plate 3 to the wide space can be reduced, the frame width size of the display device is reduced, and the appearance quality of the display device is improved. Meanwhile, the optical film 4 is arranged on the front side surface of the middle frame 2, and the front side of the diffusion plate 3 is not required to be shielded by structural members of other middle frames 2, so that the thickness of the display device is also reduced, and the ultrathin design of the display device is realized.
In some embodiments, the light guide strips 8 are provided in plurality, and the light guide strips 8 are respectively arranged on one sides of the top middle frame 21, the left middle frame 22 and the right middle frame 23 facing the center of the diffusion plate 3, so as to fix the top edge of the diffusion plate 3 on the top middle frame 21 and improve the brightness of backlight on the top edge; the left edge of the diffusion plate 3 is fixed on the left middle frame 22, and the brightness of backlight at the left edge is improved; the right edge of the diffusion plate 3 is fixed to the right middle frame 23, and the brightness of the backlight at the right edge is improved.
It should be noted that, in other embodiments, the light guide strip 8 may be disposed on the back side of the ground edge of the diffusion plate 3, so as to fix the ground edge of the diffusion plate 3 and increase the brightness of the backlight at the ground edge.
Referring to fig. 2 to 5, in some embodiments, a fixing portion 205 is protruding from a side of the middle frame 2 facing the backlight source 6, and the fixing portion 205 is elongated and extends along the length direction of the middle frame 2. The fixing portion 205 is disposed on the peripheral side of the backlight 6 and on the back side of the edge of the diffusion plate 3.
The light guide strip 8 is attached and fixed to the front side surface of the fixing portion 205, and the edge of the main body portion 51 of the back plate 5 is attached and fixed to the back surface of the fixing portion 205. Therefore, when the light guide bar 8 is fixed on the front side of the fixing portion 205, the light guide bar 8 is not only fixed on the middle frame 2 but also fixed on the back plate 5 at the same time, and when the back side of the edge of the diffusion plate 3 is fixed on the front side of the light guide bar 8, the edge of the diffusion plate 3 can be fixed on the middle frame 2 and the back plate 5 at the same time through the light guide bar 8.
In some embodiments, the back surface of the fixing portion 205 is concavely provided with a second glue groove 2052, and the second glue groove 2052 extends along the direction of the corresponding edge of the back plate 5. The second adhesive groove 2052 is provided therein with a double-sided adhesive tape, and the main body 51 of the back plate 5 is attached to the back surface of the fixing portion 205.
Referring to fig. 2 to 4, an end surface of the light guide bar 8 facing the backlight 6 is provided with an inclined surface 81. The inclined surface 81 is provided in a flat surface. In the direction from the back plate 5 to the diffusion plate 3, the inclined surface 81 gradually approaches the backlight source 6 and gradually stretches into the front side of the reflecting sheet 7, so that light rays emitted to the periphery by the backlight source 6 and the reflecting sheet 7 can be transmitted to the edge region of the diffusion plate 3 in a reflection, refraction, diffuse reflection and other modes, the improvement of the brightness of the backlight in the peripheral edge region is effectively ensured, and the display effect of the display device is favorably improved.
It will be appreciated that in other embodiments, the inclined surface 81 of the light guide bar 8 may also be configured as a cambered surface.
In some embodiments, the angle between the inclined surface 81 and the front side surface of the light guiding strip 8 is acute, so that the angle between the inclined surface 81 of the light guiding strip 8 and the backlight source 6 is also acute, so that the light emitted to the peripheral side by the backlight source 6 and the reflecting sheet 7 enters the light guiding strip 8 through the inclined surface 81 with an acute angle, and is smoothly transmitted to the diffusion plate 3 through the light guiding strip 8.
Referring to fig. 2 to 4, in some embodiments, a first adhesive tape 82 is disposed on a front side of the light guide strip 8, the first adhesive tape 82 is a light-transmitting adhesive tape, such as a OCA (Optically Clear Adhesive) optical double-sided adhesive tape, and the back surface of the edge of the diffusion plate 3 is adhered and fixed on the front side of the first adhesive tape 82.
Referring to fig. 2 to 4, in some embodiments, a second adhesive tape 83 is attached to the back surface of the light guide strip 8, and the second adhesive tape 83 is fixed on the front side surface of the fixing portion 205, so that the light guide strip 8 is fixed on the front side surface of the fixing portion 205 by the second adhesive tape 83. The second adhesive tape 83 has a reflective surface facing the front side of the light guiding strip 8, for example, the second adhesive tape 83 may be a double-sided adhesive tape with a reflective surface, and the reflective surface faces the front side of the light guiding strip 8, so that the light transmitted in the light guiding strip 8 is reflected by the reflective surface to the front side of the light guiding strip 8 and is injected into the diffusion plate 3 through the first adhesive tape 82, so as to improve the transmission effect of the light in the light guiding strip 8.
Referring to fig. 2 to 5, in some embodiments, a side wall of the middle frame 2 facing the light guiding strip 8 is concavely provided with a fitting groove 206, and the fitting groove 206 is located at a front side of the fixing portion 205. The fitting groove 206 is elongated and aligned with the extending direction of the light guide bar 8. One end of the light guide bar 8 close to the middle frame 2 is clamped in the assembly groove 206, so as to ensure the assembly reliability of the light guide bar 8.
Fig. 6 is a partial cross-sectional view of the top side edge of the display device of fig. 1 taken along A-A.
Referring to fig. 6, in some embodiments, the display device further includes a positioning element 9, the fixing portion 205 is provided with a through hole 2051 penetrating through the fixing portion 205 along the front-back direction, the positioning element 9 is inserted into the through hole 2051 of the fixing portion 205 from the back side of the back plate 5, and protrudes through the through hole 2051 onto the front side surface of the fixing portion 205, so that a portion of the positioning element 9 protruding from the front side surface of the fixing portion 205 forms the positioning post 91. Meanwhile, the light guide strip 8 is provided with a positioning hole 84 corresponding to the positioning column 91, and the positioning column 91 is inserted into the positioning hole 84, so that the assembly accuracy of the light guide strip 8 can be effectively ensured. The positioning hole 84 is located at the middle of the light guide bar 8, so that the light guide bar 8 can be expanded to both sides of the positioning hole 84 when it is expanded.
It should be noted that, in some embodiments, the positioning member 9 may also be disposed on the front side of the back plate 5, that is, the positioning member 9 is only inserted into the positioning hole 84 and protrudes from the front side of the fixing portion 205 to form the positioning post 91. In other embodiments, the positioning member 9 and the positioning post 91 may be formed on the fixing portion 205.
Based on the above technical scheme, the embodiment of the application has at least the following effects:
in the display device of the embodiment of the application, the light guide strip 8 is additionally arranged between the edge of the diffusion plate 3 and the edge of the back plate 5, the light guide strip 8 is fixed on one side of the middle frame 2 facing the diffusion plate 3 and is matched with the edge of the diffusion plate 3 to be fixed on the front side surface of the light guide strip 8, so that the middle frame 2 does not need to be additionally provided with structural members to fix the diffusion plate 3 and does not need to be additionally provided with structural members to be pressed at the edge of the front side surface of the diffusion plate 3, thereby being capable of reducing the occupation of the diffusion plate 3 on the wide space, being beneficial to reducing the width dimension of the frame of the display device and improving the appearance quality of the display device. Meanwhile, the light guide strips 8 are arranged on the periphery of the backlight source 6, so that light rays emitted by the backlight source 6 can be transmitted to the edge of the diffusion plate 3, the brightness of the backlight at the periphery is effectively improved, and the display effect of the display device is improved. And, to the display device of different light mixing distances, only need to change the middle frame 2 and the light guide strip 8 of different models, need not to change the structure and the mould of backplate 5, can be applicable to the display device of different light mixing distances, be favorable to realizing the compatible design of the common platform and the public of the big mould of backplate, reduce development cost. In addition, in the display device provided by the embodiment of the application, the assembly difficulty is low, and the production efficiency can be effectively improved.
While the application has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A display device, comprising:
a display panel;
a diffusion plate provided at a back side of the display panel at intervals;
the middle frame is arranged on the back side of the edge of the display panel and is arranged on the periphery of the diffusion plate at intervals;
the back plates are arranged on the back side of the diffusion plate at intervals;
the backlight sources are arranged on the front side of the back plate and are arranged on the back side of the diffusion plate at intervals;
the light guide strip is arranged between the edge of the diffusion plate and the edge of the back plate and is arranged on the periphery of the backlight source;
the light guide strip is fixedly arranged on one side of the middle frame facing the diffusion plate, and the edge of the diffusion plate is fixedly arranged on the front side surface of the light guide strip.
2. The display device according to claim 1, wherein an end surface of the light guide bar facing the backlight source side is provided as an inclined surface; the inclined surface is gradually closer to the backlight source in a reverse direction from the back plate toward the diffusion plate.
3. The display device of claim 2, wherein an angle between the inclined surface and the front side surface of the light guide bar is an acute angle.
4. The display device of claim 1, wherein a first adhesive tape is provided on a front side of the light guide bar, the first adhesive tape is a light-transmitting adhesive tape, and a back surface of the diffusion plate edge is adhered and fixed on the front side of the first adhesive tape.
5. The display device according to claim 1, wherein a side of the middle frame facing the backlight source is convexly provided with a fixing portion, and the fixing portion is arranged on the peripheral side of the backlight source;
the light guide strip is arranged on the front side surface of the fixing part;
the edge of the backboard is attached to the back of the fixing part.
6. The display device according to claim 5, wherein a second adhesive tape is attached to the back surface of the light guide bar, the second adhesive tape is fixed to the front side surface of the fixing portion, and the second adhesive tape has a reflective surface facing the front side of the light guide bar.
7. The display device according to claim 5, wherein a positioning column is convexly arranged on the front side surface of the fixing part, a positioning hole corresponding to the positioning column is formed in the light guide strip, and the positioning column is inserted into the positioning hole; and the positioning hole is positioned in the middle of the light guide strip.
8. The display device according to claim 5, wherein a clamping groove is concavely formed in the back surface of the middle frame, and the clamping groove is formed in one side of the fixing portion, which is far from the center of the back plate;
the backboard comprises a main body part and a flanging part which is bent and extended to the front side from the edge of the main body part;
the main body part is propped against the back surface of the fixing part, and the flanging part is inserted into the clamping groove.
9. The display device of claim 1, further comprising an optical film attached to a front side of the diffusion plate and to a back side of the display panel;
the front side surface of the middle frame is convexly provided with a hanging lug, and the hanging lug is arranged on the back side of the edge of the display panel;
the periphery side edge of the optical film is convexly provided with a hanging part, the hanging part is provided with a hanging hole, and the hanging part extends out of the edge of the diffusion plate and is hung on the hanging lug.
10. The display device according to claim 9, wherein a first step groove is concavely formed on the front side surface of the middle frame, and the back side of the edge of the display panel is adhered and fixed on the groove surface of the first step groove;
the groove surface of the first step groove is concavely provided with a second step groove, the hanging lugs are convexly arranged on the groove surface of the second step groove, and the hanging parts are arranged in the second step groove.
CN202210212738.9A 2022-03-04 2022-03-04 display device Pending CN116736578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210212738.9A CN116736578A (en) 2022-03-04 2022-03-04 display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210212738.9A CN116736578A (en) 2022-03-04 2022-03-04 display device

Publications (1)

Publication Number Publication Date
CN116736578A true CN116736578A (en) 2023-09-12

Family

ID=87908484

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210212738.9A Pending CN116736578A (en) 2022-03-04 2022-03-04 display device

Country Status (1)

Country Link
CN (1) CN116736578A (en)

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