CN106970485B - Display device - Google Patents

Display device Download PDF

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Publication number
CN106970485B
CN106970485B CN201710112163.2A CN201710112163A CN106970485B CN 106970485 B CN106970485 B CN 106970485B CN 201710112163 A CN201710112163 A CN 201710112163A CN 106970485 B CN106970485 B CN 106970485B
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wrapping
light
edge
guide plate
light guide
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CN201710112163.2A
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CN106970485A (en
Inventor
马记涛
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Huizhou TCL Mobile Communication Co Ltd
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Huizhou TCL Mobile Communication Co Ltd
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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention provides a display device which comprises a backlight module, a display module and a wrapping tape, wherein the display module is arranged on the upper surface of the backlight module, the wrapping tape comprises a bottom wrapping tape for wrapping the bottom surface of the backlight module, side wrapping tapes for wrapping the side surfaces of the backlight module and the display module and an upper wrapping tape for being pasted on the edge of the upper surface of the display module, and the wrapping tape is used for relatively fixing the backlight module and the display module. Through the mode, the display device omits an iron frame and a plastic middle frame in the prior art, so that the display device is lighter and thinner, and the lightness and thinness of the display device are realized.

Description

Display device
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
With the progress of society and the development of technology, liquid crystal displays have been increasingly used in human life.
In the prior art, a liquid crystal display generally includes a display module and a backlight module, and then the display module and the backlight module are fixed and assembled together through an iron frame and a plastic middle frame, but this method increases the weight and thickness of the display.
Disclosure of Invention
The invention mainly provides a display device, and aims to solve the problem that the display device is not light and thin enough.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a display device, this display device includes backlight unit, display module assembly and the sticky tape of borduring, display module assembly sets up backlight unit's upper surface, the sticky tape of borduring includes the cladding the end of backlight unit bottom surface is bordured, is wrapped backlight unit with the side bordure of display module assembly side and paste and be in bordure on the display module assembly upper surface edge, the sticky tape of borduring is used for making backlight unit with display module assembly relatively fixed.
The display panel comprises an upper polarizer, a CF substrate, a TFT substrate and a lower polarizer, wherein the upper polarizer, the CF substrate, the TFT substrate and the lower polarizer are sequentially stacked from top to bottom, the lower polarizer is arranged on the upper surface of the backlight module, the area of the upper polarizer is smaller than that of the CF substrate, and the upper polarizer is arranged on the CF substrate in the middle so that the CF substrate is exposed out of a frame-shaped laminating area for the upper edge covering and laminating.
The display module further comprises a first FPC electrically connected with the TFT substrate to supply power to the TFT substrate, a first opening with an L-shaped interface is arranged at the joint of the side wrapping edge and the upper wrapping edge, and the first FPC extends out of the first opening and is attached to the outer surfaces of the side wrapping edge and the bottom wrapping edge.
The backlight module comprises a diffusion sheet, a light guide plate and a reflection sheet which are sequentially stacked from top to bottom, the light guide plate comprises a light-emitting surface and a bottom surface, the light-emitting surface is of a V-Cut structure so as to increase light rays in the visual direction of the light-emitting surface, and the bottom surface is provided with a plurality of mesh points so as to increase the light rays reflected to the light-emitting surface.
The backlight module further comprises a light bar for providing a light source for the light guide plate, the light bar comprises L ED lamps and a second FPC for supplying power to the L ED lamps, the second FPC comprises a first portion and a second portion which are integrally arranged, the first portion and the reflecting sheet are arranged on the same layer, and the L ED lamps are arranged on the first portion and located on the side face of the light guide plate.
The area of the reflector plate is smaller than that of the light guide plate and is located in the middle of the light guide plate, so that the light guide plate covers the reflector plate and the first portion simultaneously.
The bottom of the side wrapping edge is provided with a second opening, and the second part extends out of the second opening and is attached to the outer surface of the first FPC so that the second FPC is electrically connected with the first FPC.
Wherein the display device further comprises a filler supported between the CF substrate and the first portion and located outside the L ED lamps.
Wherein, the reflector plate is a silver reflector plate.
Wherein, the edge-covering adhesive tape is a black Mylar adhesive tape.
The invention has the beneficial effects that: different from the situation of the prior art, the invention adopts the method that the backlight module and the display module are relatively fixed by using the bottom wrapping tape for wrapping the bottom surface of the backlight module, the side wrapping tapes for wrapping the side surfaces of the backlight module and the display module and the wrapping tape for sticking the upper wrapping tape on the edge of the upper surface of the display module, thereby saving an iron frame and a plastic middle frame in the prior art, further leading the display device to be lighter and thinner and realizing the lightness and thinness of the display device.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of a display device of the present invention;
FIG. 2 is a schematic perspective view of the display device shown in FIG. 1;
FIG. 3 is a schematic view of the structure of the light guide plate in FIG. 1;
fig. 4 is a schematic bottom perspective view of the display device shown in fig. 2.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, a display device provided by the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, the embodiment of the display device provided by the invention includes a taping tape 11, a display module 12 and a backlight module 13, and the display module 12 is disposed on the backlight module 13.
The edge-covered tape 11 includes a bottom-covered edge 111 covering the bottom surface of the backlight module 13, a side-covered edge 112 covering the side surfaces of the backlight module 13 and the display module 12, and an upper-covered edge 113 adhered to the edge of the upper surface of the display module 12.
Generally, the display device is rectangular, such as a conventional lcd, and therefore, the number of bottom edges 111 on a bottom surface is one, the number of side edges 112 on four sides is four, the number of top edges 113 on the peripheral edge of the top surface is four, and the four top edges 113, the side edges 112 and the bottom edge 111 form an enclosing space to fix the display module 12 and the backlight module 13 relatively.
Optionally, the edge-covering adhesive tape 11 is a black Mylar adhesive tape, which has good heat resistance, surface smoothness and mechanical flexibility, and the black Mylar adhesive tape can also be used for shielding light emitted by the backlight module 13, so as to avoid light leakage.
Referring to fig. 2, a first opening 1121 is formed at a connection portion between the side wrapping edge 112 and the upper wrapping edge 113 on the same side, the cross section of the connection portion is L-shaped, a second opening 1122 is further formed at the bottom of the side wrapping edge 112, and optionally, the first opening 1121 and the second opening 1122 are formed on the side wrapping edge 112 on the same side.
Further referring to fig. 1, the display module 12 includes an upper polarizer 121, a CF substrate 122, a TFT substrate 123 and a lower polarizer 124, which are stacked from top to bottom, and the lower polarizer 124 is disposed on the upper surface of the backlight module 13.
The area of the upper polarizer 121 is smaller than that of the CF substrate 122, and the upper polarizer 121 is centrally disposed on the CF substrate 122, so that the peripheral edge of the CF substrate 122 exposes the frame-shaped bonding region for bonding the upper edge 113.
Referring further to fig. 1 and 2, the display module 12 further includes a first FPC125 electrically connected to the TFT substrate 123 to supply power to the TFT substrate 123.
One end of the first FPC125 is attached to the upper surface of the TFT substrate 123 to be electrically connected to the TFT substrate, and the other end extends through the first opening 1121 and is attached to the outer surfaces of the side wrapping 112 and the bottom wrapping 111.
The backlight module 13 includes a diffusion sheet 131, a light guide plate 132 and a reflection sheet 133 stacked in sequence from top to bottom.
The diffusion sheet 131 is disposed on the light guide plate 132 to atomize the light emitted from the light guide plate 132, so that the emitted light can be uniformly transmitted.
Referring to fig. 3, the light guide plate 132 includes a light emitting surface and a bottom surface, the light emitting surface is an upper surface of the light guide plate 132 shown in fig. 3, and the bottom surface is a lower surface of the light guide plate 132.
The light-emitting surface is provided with a V-Cut structure, the V-Cut structure comprises a plurality of strip-shaped units 1321 which are parallel to each other, the projection of the V-Cut structure on the light-emitting surface can be zigzag, when light passes through the V-Cut structure, one part of the light penetrates out of the V-Cut structure and is refracted, and the light is gathered towards the normal direction and is guided to the viewing direction by the V-Cut structure from the edge direction, so that the light of the viewing direction of the light-emitting surface of the light guide plate 132 is increased, the light utilization rate of a light source is improved, the other part of the light is reflected back into the light guide plate 132, the loss of light energy is reduced, and the light utilization rate is further improved; the bottom surface has a plurality of mesh points 1322, which can be processed by bump processing to form mesh points 1322 with higher surface smoothness, so as to emit more light rays reflected back to the light guide plate 132 to the light-emitting surface, reduce the light rays emitted out of the light guide plate 132, and further improve the utilization rate of the light source.
The reflective sheet 133 is disposed on the bottom edge 111, and can reflect the light emitted from the light guide plate 132 to the light guide plate 132 again, thereby improving the utilization rate of the light source.
Further, in the present embodiment, the area of the reflective sheet 133 is smaller than that of the light guide plate 132, and the reflective sheet 133 is located at the central position of the light guide plate 132.
Optionally, the reflective sheet 133 is a silver reflective sheet to increase the reflection efficiency.
Further, the backlight module 13 further includes a light bar 134 for providing a light source for the light guide plate 132, and the light bar 134 includes L ED lights 1341 and a second FPC1342 for supplying power to the L ED lights 1341.
Referring to fig. 1 and 4 together, the second FPC1342 includes a first portion 1343 and a second portion 1344 integrally formed.
The first portion 1343 and the reflective sheet 133 are disposed on the bottom edge cover 111 in the same layer, the light guide plate 132 covers the reflective sheet 133 and the first portion 1343, L ED lamps 1341 disposed on the first portion 1343 and located at the side of the light guide plate 132 to provide light source to the light guide plate 132 from the side, and the second portion 1344 extends through the second opening 1122 and is attached to the outer surface of the first FPC125 to electrically connect the second FPC1342 and the first FPC 125.
Further, the display device further includes a filler 135, and the filler 135 is supported between the first portion 1343 and the CF substrate 122 and is located outside the L ED lamp 1341.
Optionally, the filler 135 is a Mylar sheet.
To further illustrate the present invention, the display device of the present invention is compared with the display device of the prior art to make the present invention more intuitive.
The size of the display device is 10 inches, for example.
Figure BDA0001234746290000051
TABLE 1
Table 1 shows an efficiency comparison table of the display device of the present invention and the display device of the prior art, wherein the L ED lamps can be L ED lamps with high light intensity or L ED lamps are added to achieve a brightness 1.4 times higher than that of L ED lamps in the prior art, the lower diffusion sheet in table 1 is the diffusion sheet 131 in the above, and other structures and the above structures are the same structure.
Furthermore, as can be seen from the above description, the light guide plate has a light-emitting surface with a V-Cut structure and a bottom surface with a plurality of dots, so that the utilization rate of the light source is improved, and the efficiency of the light guide plate is improved, and the reflective sheet adopts a silver reflective sheet, so that the reflective efficiency is improved, according to the luminance formula:
Figure BDA0001234746290000061
Figure BDA0001234746290000062
Figure BDA0001234746290000063
it can be seen that the present invention increases L ED light intensity, light guide plate efficiency and upper diffuser efficiency, so that as shown in table 1, the present invention can omit the structures of the lower brightness enhancement film, the upper brightness enhancement film and the lower diffuser film, and the brightness does not change much.
Figure BDA0001234746290000064
TABLE 2
Table 2 is a table comparing the thickness of the display device of the present invention with that of the display device of the prior art, in which the present invention uses the taping tape instead of the bezel in the prior art, and omits the lower brightness enhancement film, the upper brightness enhancement film and the lower diffusion film, so that the thickness of the display device of the present invention is significantly smaller than that of the display device of the prior art.
Figure BDA0001234746290000071
TABLE 3
Table 3 is a table comparing the weight of the display device of the present invention with that of the display device of the prior art, in which the present invention uses the wrapping instead of the iron frame and the plastic middle frame, and omits the lower brightness enhancement film, the upper brightness enhancement film and the lower diffusion film, so that the display device of the present invention has a significantly lighter weight than the display device of the prior art.
Different from the prior art, the invention uses the bottom edge covering the bottom surface of the backlight module, the side edge covering the side surfaces of the backlight module and the display module and the edge covering adhesive tape adhered to the upper edge of the upper surface of the display module to relatively fix the backlight module and the display module, thereby saving an iron frame and a plastic middle frame in the prior art, and further saving a lower brightness enhancement film, an upper brightness enhancement film and a lower brightness enhancement film on the premise of small brightness influence, thereby leading the display device to be lighter and thinner and realizing the lightness and thinness of the display device.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (3)

1. A display device is characterized by comprising a backlight module, a display module and a wrapping tape, wherein the display module is arranged on the upper surface of the backlight module, the wrapping tape comprises a bottom wrapping tape wrapping the bottom surface of the backlight module, a side wrapping tape wrapping the side surfaces of the backlight module and the display module and an upper wrapping tape pasted on the edge of the upper surface of the display module, and the wrapping tape is used for relatively fixing the backlight module and the display module;
the display module comprises an upper polaroid and a CF substrate which are sequentially stacked from top to bottom, wherein the area of the upper polaroid is smaller than that of the CF substrate, and the upper polaroid is centrally arranged on the CF substrate so that the CF substrate is exposed out of a frame-shaped attaching area for attaching the upper edge;
the backlight module comprises a diffusion sheet, a light guide plate and a reflection sheet which are sequentially stacked from top to bottom, the reflection sheet is arranged on the bottom wrapping edge, the light guide plate comprises a light-emitting surface and a bottom surface, the light-emitting surface is of a V-Cut structure so as to increase light rays in the visual direction of the light-emitting surface, and the bottom surface is provided with a plurality of mesh points so as to increase light rays reflected to the light-emitting surface;
the display module further comprises a TFT substrate and a lower polarizer, and the upper polarizer, the CF substrate, the TFT substrate and the lower polarizer are sequentially stacked from top to bottom;
the display module further comprises a first FPC electrically connected with the TFT substrate to supply power to the TFT substrate, a first opening with an L-shaped interface is arranged at the joint of the side wrapping edge and the upper wrapping edge, and the first FPC extends out of the first opening and is attached to the outer surfaces of the side wrapping edge and the bottom wrapping edge;
the reflector plate is a silver reflector plate, and the edge-covered adhesive tape is a black Mylar adhesive tape;
the number of the bottom covered edges is one, the number of the side covered edges is four, and the number of the upper covered edges is four;
the backlight module further comprises a light bar for providing a light source for the light guide plate, the light bar comprises L ED lamps and a second FPC for supplying power to the L ED lamps, the second FPC comprises a first part and a second part which are integrally arranged, the first part and the reflector sheet are arranged in the same layer, and the L ED lamps are arranged on the first part and positioned on the side face of the light guide plate;
the bottom of the side wrapping edge is provided with a second opening, and the second part extends out of the second opening and is attached to the outer surface of the first FPC, so that the second FPC is electrically connected with the first FPC.
2. The display device according to claim 1, wherein the reflective sheet has an area smaller than that of the light guide plate and is located at a central position of the light guide plate, so that the light guide plate simultaneously covers the reflective sheet and the first portion.
3. The display device according to claim 2, further comprising a filler supported between the CF substrate and the first portion and outside the L ED lamp.
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CN107340644A (en) * 2017-08-30 2017-11-10 捷开通讯(深圳)有限公司 Backlight module and the liquid crystal display with the backlight module
CN107505771A (en) * 2017-08-30 2017-12-22 捷开通讯(深圳)有限公司 Backlight module and the liquid crystal display with the backlight module
CN107817673B (en) * 2017-11-20 2020-10-27 深圳市沃特沃德股份有限公司 Wearable device
CN114634794A (en) * 2022-03-01 2022-06-17 武汉华星光电技术有限公司 Edge-covered tape, display device, and display device manufacturing method

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