CN107966858A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN107966858A CN107966858A CN201711419575.7A CN201711419575A CN107966858A CN 107966858 A CN107966858 A CN 107966858A CN 201711419575 A CN201711419575 A CN 201711419575A CN 107966858 A CN107966858 A CN 107966858A
- Authority
- CN
- China
- Prior art keywords
- metal sheet
- conductive metal
- backlight module
- display panel
- circuit board
- 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.)
- Granted
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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
-
- 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
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
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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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention relates to a kind of backlight module, optical film material including light guide plate and positioned at the bottom surface of light guide plate, the conductive metal sheet being electrically connected for the flexible circuit board with display panel is further included, the conductive metal sheet is arranged on the side of the remote light guide plate of the optical film material.The invention further relates to a kind of display device.The beneficial effects of the invention are as follows：Flexible circuit board is contacted with conducting metal plate face, and earthing effect is good, and flexible circuit board is fixed on conductive metal sheet, improves the connective stability of flexible circuit board, is substantially reduced the capacitance sound of flexible circuit board transmission, is improved user experience.
Description
Technical field
The present invention relates to display production technical field, more particularly to a kind of backlight module and display device.
Background technology
Comprehensive screen mobile phone possesses the visual impact and visual experience being pleasantly surprised, and enjoys major cell phone manufacturer to favor, shields hand comprehensively
Machine becomes mobile phone development trend.Comprehensive screen mobile phone refers to：The mobile phone of height screen accounting, screen accounting can reach more than 85%, gather around
There are the mobile phone of ultra-narrow frame design, general screen aspect ratio 18:9 or 18.5:9.When comprehensive screen uses LCD (Liquid
Crystal Display, liquid crystal display) backlight module of glue frame is when providing brightness, as shown in Figure 1,101 is backlight module
Reflectance coating, 102 be the dew copper region of flexible circuit board, and 103 be conductive fabric, and 104 be composite membrane, and 105 be flexible circuit board.Have
Many risks and problem：
When backlight module of comprehensive screen using LCD glue frames, whole backlight module do not have big region metal come with it is soft
Property wiring board is fixed together, and the backlight module back side is very thin reflectance coating, can not be fixed together with flexible circuit board, so
The electrostatic of flexible circuit board does not have release way, and ground connection is insufficient, and causing ESD tests, (electronic component carries out electrostatic protection
Test) easily failure；
The reflectance coating 101 of backlight module is very thin, it is impossible to which fixing flexible wiring board 105, causes display screen drive chip to work
When, the vibration of generation passes to flexible circuit board 105, and the vibration of micron level occurs in flexible circuit board 105, so as to produce capacitance
Sound.Under quiet environment, it can understand and hear taste taste sound, influence user experience.
The content of the invention
In order to solve the above technical problem, the present invention provides a kind of backlight module and display device, solves the soft of display screen
Property circuit plate earthing it is insufficient the problem of, and solve reflectance coating can not fixing flexible wiring board, cause flexible circuit board to be shaken
The problem of moving and producing capacitance sound.
In order to achieve the above object, the technical solution adopted by the present invention is：A kind of backlight module, including light guide plate and and position
In the optical film material of the bottom surface of light guide plate, the conducting metal being electrically connected for the flexible circuit board with display panel is further included
Plate, the conductive metal sheet are arranged on the side of the remote light guide plate of the optical film material.
The present invention also provides a kind of display device, including：Metal center and display panel, the display panel are equipped with soft
Property circuit board；Further include above-mentioned backlight module；
Wherein, the conductive metal sheet is arranged on the side of the remote display panel of the optical film material, and described
Conductive metal sheet is connected with the metal center；The flexible PCB is connected to the conductive metal sheet, the remote light
In the one side for learning membrane material, and it is electrically connected with the conductive metal sheet.
The beneficial effects of the invention are as follows：Flexible circuit board is contacted with conducting metal plate face, and earthing effect is good, flexible circuitry
Plate is fixed on conductive metal sheet, improves the connective stability of flexible circuit board, substantially reduces the electricity of flexible circuit board transmission
Rong Sheng, improves user experience.
Brief description of the drawings
Fig. 1 shows backlight module schematic diagram in the prior art；
Fig. 2 represents conducting metal plate structure schematic diagram in the embodiment of the present invention；
Fig. 3 represents the partial structural diagram one that conductive metal sheet is connected with glue frame in the embodiment of the present invention；
Fig. 4 represents the partial structural diagram two that conductive metal sheet is connected with glue frame in the embodiment of the present invention；
Fig. 5 represents the partial structural diagram three that conductive metal sheet is connected with glue frame in the embodiment of the present invention；
Fig. 6 represents the partial structural diagram four that conductive metal sheet is connected with glue frame in the embodiment of the present invention；
Fig. 7 represents the side sectional view of Fig. 6；
Fig. 8 shows display device structure schematic diagram one in the embodiment of the present invention；
Fig. 9 represents display device structure schematic diagram two in the embodiment of the present invention；
Figure 10 represents display device structure schematic diagram three in the embodiment of the present invention.
Embodiment
The feature and principle of the present invention are described in detail below in conjunction with attached drawing, illustrated embodiment is only used for explaining this hair
It is bright, protection scope of the present invention is not limited with this.
As shown in figures 2-6, the present embodiment provides a kind of backlight module, including light guide plate and optical film material 20, use is further included
In the conductive metal sheet 1 that the flexible circuit board 5 with display panel 10 is electrically connected, the conductive metal sheet 1 is arranged on the optics
The side of the remote light guide plate of membrane material 20.
There is provided the backlight module of conductive metal sheet 1, realizes the flexible PCB of display screen being fixedly connected on described lead
It is contact of the face with face between the flexible circuit board 5 and the conductive metal sheet 1 on electric metal plate 1, contact area is big,
When carrying out ESD tests, the electrostatic in flexible circuit board 5 is easy to export to the conductive metal sheet 1, then passes through display device
Metal center 30 export, the earthing effect of flexible circuit board 5 is good, and radio frequency interference is small；The material of conductive metal sheet 1 is gold
Belong to, rapid heat dissipation, improve the heat dissipation effect of 5 plate of flexible circuit board, the composite membrane for being used to radiate without additional again, reduces into
This；And flexible circuit board 5 is fixed on the conductive metal sheet 1, the connective stability of flexible circuit board 5 is improved, is reduced soft
Property wiring board 5 transmit capacitance sound, improve user experience.
In the present embodiment, backlight module further includes a glue frame 2 for being centered around 1 surrounding of conductive metal sheet, and the glue frame 2 is fixed
In on the conductive metal sheet 1.
The setting of glue frame 2 is used to display panel 10 and backlight module being fixed together, and in glue frame 2 and display panel 10
During connection, by black double-sided gemel connection, part black double-sided glue extends to the top of the light guide plate, plays shading work
With preventing light leak.
Optionally, the edge of the conductive metal sheet 1 extends to form side to the bending close to the side of the light guide plate
Wall, the glue frame 2 are arranged on the medial surface of the side wall.The formation of the side wall, plays the role of the fixed glue frame 2, protects
Demonstrate,prove the yield of display device entirety.
Optionally, the glue frame 2 and 1 integrated injection molding of conductive metal sheet, but be not limited thereto.The glue frame
2 and 1 integrated injection molding of the conductive metal sheet ensure that stable connection between the glue frame 2 and the conductive metal sheet 1
Property.
The setting of display device antenna generally uses the U-shaped antenna form of dome type, in order to discharge antenna headroom region, meets
The needs that antenna is set, in the present embodiment, four edges of the conductive metal sheet 1 are provided with for avoiding display device
The notch of antenna, as shown in Fig. 2-Fig. 6.
Specifically, the conductive metal sheet 1 includes the first side and the second side being oppositely arranged,
Two equal sharpings in corner of the first side of the conductive metal sheet 1, form the first notch 11, such as Fig. 3 and Fig. 4 institutes
Show；
Two corners of the second side of the conductive metal sheet 1 are recessed to close to the direction of first side, form the
Two notches 12, as shown in Figure 5 and Figure 6；
Two corners of the first side of the glue frame 2 are the 3rd notch 21 with 11 form fit of the first notch,
As shown in Figure 3 and Figure 4；
The edge of the second side two of the glue frame 2 is respectively provided with the filling part 22 being filled in second notch 12, such as
Shown in Fig. 5 and Fig. 6.
In the present embodiment, the filling part 22 is included by one side of the conductive metal sheet 1 away from the display panel 10
The first subdivision and the second subdivision of the horizontal plane division at place, the thickness of first subdivision are less than the conducting metal
The thickness of plate 1, second subdivision include being covered in one side of the conductive metal sheet 1 away from the display panel 10
First area.
For the ease of the injection of the glue frame 2, first subdivision is filled at second notch 12, but generally
Only 0.10mm thickness, Shooting Technique realizes difficulty, therefore the filling part 22 includes second subdivision, first son
Part general thickness is 0.30mm, and second subdivision includes being covered in the conductive metal sheet 1 away from the display surface
First area in the one side of plate 10, glue is grabbed between the area increase of second subdivision and conductive metal sheet.
The optical film material 20 includes reflectance coating, and the reflectance coating is arranged at the conductive metal sheet 1 towards the display
The side of panel 10.
Relative in the prior art, the reflectance coating is connected with the flexible circuit board 5, in the present embodiment, the reflection
Film is located at the opposite sides of the conductive metal sheet 1 with the flexible circuit board 5 respectively, that is, improves connecing for flexible circuit board 5
Ground effect, heat dissipation effect etc., and avoid the damage of reflectance coating.
In the present embodiment, the conductive metal sheet is made of stainless steel, but is not limited thereto.
As Figure 8-Figure 10, the present embodiment also provides a kind of display device, including：Metal center 30 and display panel
10, the display panel 10 is equipped with flexible PCB；Further include above-mentioned backlight module；
The backlight module includes conductive metal sheet 1, and the conductive metal sheet 1 is arranged on the remote of the optical film material 20
The side of the display panel 10, and the conductive metal sheet 1 is connected with the metal center 30；Wherein described flexible PCB
It is connected in the one side of the remote optical film material 20 of the conductive metal sheet 1, and is electrically connected with the conductive metal sheet 1
Connect.
There is provided the backlight module of conductive metal sheet 1, realizes the flexible PCB of display screen being fixedly connected on described lead
It is contact of the face with face between the flexible circuit board 5 and the conductive metal sheet 1 on electric metal plate 1, contact area is big,
When carrying out ESD tests, the electrostatic in flexible circuit board 5 is easy to export to the conductive metal sheet 1, then passes through display device
Metal center 30 export, the earthing effect of flexible circuit board 5 is good, and radio frequency interference is small；The material of conductive metal sheet 1 is gold
Belong to, rapid heat dissipation, improve the heat dissipation effect of 5 plate of flexible circuit board, the composite membrane for being used to radiate without additional again, reduces into
This；And flexible circuit board 5 is fixed on the conductive metal sheet 1, the connective stability of flexible circuit board 5 is improved, is reduced soft
Property wiring board 5 transmit capacitance sound, improve user experience.
In the present embodiment, the conductive metal sheet 1 is electrically connected by conductive sponge 6 with the metal center 30, but not
As limit.
In the present embodiment, conductive tie layers 4 are provided between the conductive metal sheet 1 and the flexible circuit board 5, are realized
Being electrically connected between the flexible circuit board 5 and the conductive metal sheet 1.
Optionally, the conductive tie layers 4 are conductive double sided adhesive tape.The conductive double sided adhesive tape realizes the flexible circuit board 5
Being electrically connected between the conductive metal sheet 1, lifts the earthing effect of flexible circuit board 5, and plays the flexible circuitry
Plate 5 is fixed on the effect of the conductive double sided adhesive tape.
In the present embodiment, a glue frame 2 for being centered around 1 surrounding of conductive metal sheet is further included, the glue frame 2 is fixed on described lead
On electric metal plate 1, and the glue frame 2 passes through tack coat 3 and the display panel 10 in the side towards the display panel 10
Connection.
Optionally, the edge of the conductive metal sheet 1 is to close to the bending extension of the side of the display panel 10, shape
Into side wall, the glue frame 2 is arranged on the medial surface of the side wall.The formation of the side wall, plays the work of the fixed glue frame 2
With the yield of guarantee display device entirety.
Optionally, the glue frame 2 and 1 integrated injection molding of conductive metal sheet, but be not limited thereto.The glue frame
2 and 1 integrated injection molding of the conductive metal sheet ensure that stable connection between the glue frame 2 and the conductive metal sheet 1
Property.
Optionally, the tack coat 3 is black double-sided glue.
The setting of glue frame 2 is used to display panel 10 and backlight module being fixed together, and in glue frame 2 and display panel 10
During connection, by black double-sided gemel connection, part black double-sided glue extends to the top of the light guide plate, plays shading work
With preventing light leak.
The setting of display device antenna generally uses the U-shaped antenna form of dome type, in order to discharge antenna headroom region, meets
The needs that antenna is set, in the present embodiment, four edges of the conductive metal sheet 1 are provided with for avoiding display device
The notch of antenna, as shown in Fig. 2-Fig. 6.
Specifically, the conductive metal sheet 1 includes the first side and the second side being oppositely arranged,
Two equal sharpings in corner of the first side of the conductive metal sheet 1, form the first notch 11, such as Fig. 3 and Fig. 4 institutes
Show；
Two corners of the second side of the conductive metal sheet 1 are recessed to close to the direction of first side, form the
Two notches 12, as shown in Figure 5 and Figure 6；
Two corners of the first side of the glue frame 2 are the 3rd notch 21 with 11 form fit of the first notch,
As shown in Figure 3 and Figure 4；
The edge of the second side two of the glue frame 2 is respectively provided with the filling part 22 being filled in second notch 12, such as
Shown in Fig. 5 and Fig. 6.
The filling part 22 is included as the horizontal plane where one side of the conductive metal sheet 1 away from the display panel 10
The first subdivision 221 and the second subdivision 222 of division, as shown in fig. 7, first subdivision 221 and second sub-portion
Divide 222 both sides for being located at dotted line in Fig. 7, the thickness of first subdivision 221 is less than the thickness of the conductive metal sheet 1, institute
State the first area that the second subdivision 222 includes being covered in one side of the conductive metal sheet 1 away from the display panel 10
Region in 2221, the first area 2221 such as Fig. 7 in dotted rectangle, the first area 2221 is covered in the conduction
On metallic plate, the setting of first area 2221 increases the connection area between glue frame 2 and conductive metal sheet 1, enhances glue frame 2
With the connective stability between conductive metal sheet 1.
For the ease of the injection of the glue frame 2, first subdivision 221 is filled at second notch 12, still
Generally only 0.10mm thickness, Shooting Technique realization difficulty, therefore the filling part 22 includes second subdivision 222, institute
It is 0.30mm to state 221 general thickness of the first subdivision, and second subdivision 222 includes being covered in the conductive metal sheet 1
First area 2221 in one side away from the display panel 10, the setting of second subdivision 222 increase glue frame 2 with
Connection area between conductive metal sheet 1, enhances the connective stability between glue frame 2 and conductive metal sheet 1.
The optical film material 20 includes reflectance coating, and the reflectance coating is arranged at the conductive metal sheet 1 towards the display
The side of panel 10.
Relative in the prior art, the reflectance coating is connected with the flexible circuit board 5, in the present embodiment, the reflection
Film is located at the opposite sides of the conductive metal sheet 1 with the flexible circuit board 5 respectively, that is, improves connecing for flexible circuit board 5
Ground effect, heat dissipation effect etc., and avoid the damage of reflectance coating.
The above be present pre-ferred embodiments, it is necessary to explanation, to those skilled in the art,
On the premise of not departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
The scope of the present invention.
Claims (10)
1. a kind of backlight module, including light guide plate and the optical film material positioned at the bottom surface of light guide plate, it is characterised in that further include
The conductive metal sheet being electrically connected for the flexible circuit board with display panel, the conductive metal sheet are arranged on the optical film material
The remote light guide plate side.
2. backlight module according to claim 1, it is characterised in that further include the glue for being centered around conductive metal sheet surrounding
Frame, the glue frame are fixed on the conductive metal sheet；
The edge of the conductive metal sheet extends to form side wall to the bending close to the side of the light guide plate, and the glue frame is set
Put the medial surface in the side wall.
3. backlight module according to claim 2, it is characterised in that the glue frame and the conductive metal sheet integrated injection molding
Shaping.
4. backlight module according to claim 2, it is characterised in that four edges of the conductive metal sheet are provided with
Notch for the antenna for avoiding display device.
5. backlight module according to claim 4, it is characterised in that
The conductive metal sheet includes the first side and the second side being oppositely arranged,
Two equal sharpings in corner of the first side of the conductive metal sheet, form the first notch,
Two corners of the second side of the conductive metal sheet are recessed to close to the direction of first side, form second and lack
Mouthful；
Two corners of the first side of the glue frame are and matched 3rd notch of first notch geometry；
Two edges of the second side of the glue frame are respectively provided with the filling part being filled in second notch.
6. backlight module according to claim 5, it is characterised in that
The filling part includes the divided as the horizontal plane where one side of the conductive metal sheet away from the display panel
One subdivision and the second subdivision, the thickness of first subdivision are less than the thickness of the conductive metal sheet, second son
Part includes the first area being covered in one side of the conductive metal sheet away from the display panel.
7. backlight module according to claim 1, it is characterised in that the optical film material includes reflectance coating, the reflection
Film is arranged at the conductive metal sheet towards the side of the display panel.
8. a kind of display device, including：Metal center and display panel, the display panel are equipped with flexible PCB；It is special
Sign is, further includes claim 1-7 any one of them backlight modules；
Wherein, the conductive metal sheet is arranged on the side of the remote display panel of the optical film material, and the conduction
Metallic plate is connected with the metal center；The flexible PCB is connected to the conductive metal sheet, the remote optical film
In the one side of material, and it is electrically connected with the conductive metal sheet.
9. display device according to claim 8, it is characterised in that the conductive metal sheet and the flexible circuit board it
Between be provided with conductive tie layers, the conductive tie layers are conductive double sided adhesive tape.
10. display device according to claim 8, it is characterised in that the backlight module includes being centered around the conduction
The glue frame of metallic plate surrounding, the glue frame are connected in the side towards the display panel by tack coat and the display panel
Connect；The tack coat is black double-sided glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711419575.7A CN107966858B (en) | 2017-12-25 | 2017-12-25 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711419575.7A CN107966858B (en) | 2017-12-25 | 2017-12-25 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107966858A true CN107966858A (en) | 2018-04-27 |
| CN107966858B CN107966858B (en) | 2020-04-14 |
Family
ID=61995759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711419575.7A Active CN107966858B (en) | 2017-12-25 | 2017-12-25 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107966858B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873474A (en) * | 2018-06-29 | 2018-11-23 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN113050315A (en) * | 2019-12-26 | 2021-06-29 | 乐金显示有限公司 | Display device |
| CN113311618A (en) * | 2021-06-15 | 2021-08-27 | 武汉华星光电技术有限公司 | Backlight module, manufacturing method of backlight module and display module |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107966858B (en) | 2020-04-14 |
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