CN107179632A - Backlight module, display module and display device - Google Patents
Backlight module, display module and display device Download PDFInfo
- Publication number
- CN107179632A CN107179632A CN201710638372.0A CN201710638372A CN107179632A CN 107179632 A CN107179632 A CN 107179632A CN 201710638372 A CN201710638372 A CN 201710638372A CN 107179632 A CN107179632 A CN 107179632A
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- Prior art keywords
- led
- backlight module
- control group
- display
- chamfering
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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
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
This application discloses a kind of backlight module, display module and display device, it is related to display technology field, wherein, backlight module includes LED/light source, light guide plate and the optical film set gradually, and the backlight module is provided with chamfering in the side close to the LED/light source；The LED/light source includes some first LEDs and at least one second LED, second LED is located at the chamfering position of the backlight module, first LED is located at the non-chamfering position of the backlight module, and the diameter of second LED is less than the diameter of first LED.So, when backlight module includes chamfering, less second LED of size is placed in chamfering position, the problem of backlight module chamfering position is shaded is effectively prevent, be conducive to improving the uniformity for the light source that backlight module is provided, and then be conducive to improving the display effect of display module and display device.
Description
Technical field
The application is related to display technology field, specifically, is related to a kind of backlight module, display module and display device.
Background technology
With the development of science and technology, the display device with display module be used for it is more and more extensive so that people couple
The requirement of display module is more and more diversified, is no longer only satisfied with the conventional performance such as large scale, fine definition of display module
Index, also the profile to display module has more diversified requirement, therefore occurs in that special-shaped display module.
The appearance of special-shaped display module breaches the limitation of display module single rectangular structure, not only causes display effect
It is more diversified, and make it that the application approach of display module is also more and more extensive, it has been successfully applied to such as wrist-watch, glasses
Or in the wearable Electronic Design of Intelligent bracelet etc.When abnormal shape is presented in display module, it is sometimes desirable in backlight module
Corner location designs chamfering, to adapt to display device complete machine structure.When setting chamfering in the corner location of backlight module, referring to
Fig. 1, Fig. 1 show a kind of structural representation that backlight module 500 in the prior art is provided with chamfering, and backlight module 500 falls
Angular position (i.e. the position of dashed box 501 in Fig. 1) space is smaller, it is difficult to original LED 502 is placed, in this way, the back of the body can be sacrificed
The arrangement space of optical mode group corner LED.Arranged if removing down the LED 502 of angular position or concentrating LED 502 toward center
Cloth, will all cause backlight module luminance nonuniformity, and the phenomenon for the obfuscation of falling angular position influences the display effect of display device.
The content of the invention
In view of this, technical problems to be solved in this application there is provided a kind of display module and display device, in the back of the body
Less second LED of size is placed in the chamfering position of optical mode group, effectively prevent the problem of backlight module chamfering position is shaded,
Be conducive to improving the uniformity for the light source that backlight module is provided, and then be conducive to improving the display of display module and display device
Effect.
In order to solve the above-mentioned technical problem, the application has following technical scheme：
In a first aspect, the application provides a kind of backlight module, including LED/light source, light guide plate and the optical film set gradually,
The backlight module is provided with chamfering in the side close to the LED/light source；
The LED/light source includes some first LEDs and at least one second LED, and second LED is located at described
The chamfering position of backlight module, first LED is located at the non-chamfering position of the backlight module, second LED
Diameter is less than the diameter of first LED.
Alternatively, wherein：
First LED includes the first signal input part, and second LED includes secondary signal input, described
First LED receives the first driving voltage by first signal input part, and second LED passes through the secondary signal
Input receives the second driving voltage.
Alternatively, wherein：
Second driving voltage is more than first driving voltage, and the luminous intensity of second LED is equal to described
The luminous intensity of first LED.
Alternatively, wherein：
The quantity of second LED is N, and N >=2, each second LED is connected in series.
Alternatively, wherein：
First LED that each first LED is divided into M control group, M >=2, each control group is only
It is vertical luminous.
Alternatively, wherein：
Each first LED is divided into two control groups, respectively the first control group and the second control group, described first
Each first LED in control group is connected in series, and each first LED in second control group is connected in series,
Adjacent first LED is located at first control group and second control group respectively；
The first LED in first control group and second control group independently lights.
Alternatively, wherein：
In each first LED, the spacing between two neighboring first LED is equal.
Alternatively, wherein：
In the direction perpendicular to plane where the light guide plate, the difference in height of second LED and first LED
H≤0.1mm。
Alternatively, wherein：
The width of first LED is D1,3mm≤D1≤3.8mm, and the width of second LED is D2,1.5mm
≤D2≤2mm。
Alternatively, wherein：
The optical film includes diffusion sheet, lower brightening piece and the upper brightening piece set gradually, and the diffusion sheet is close to described
Light guide plate is set.
Alternatively, wherein：
The backlight module also includes reflector plate, and the reflector plate is arranged on one of the light guide plate away from the optical film
Side.
Second aspect, the application provides a kind of display module, and the display module includes backlight module and display panel, its
Middle backlight module is backlight module provided herein.
The third aspect, the application provides a kind of display device, including display module, and the display module is aobvious in the application
Show module.
Compared with prior art, display module and display device described herein, have reached following effect：
In backlight module provided by the present invention, display module and display device, backlight module is close to the one of LED/light source
Side is provided with chamfering, and LED/light source includes the first LED and the second LED, particularly, is set in the position of backlight module chamfering
There is the second LED, the first LED is arranged on to the non-chamfering position of backlight module, in this way, it is smaller to place size in chamfering position
The second LED, effectively prevent the problem of backlight module chamfering position is shaded, be conducive to improving the light that is provided of backlight module
The uniformity in source, and then be conducive to improving the display effect of display module and display device.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, this Shen
Schematic description and description please is used to explain the application, does not constitute the improper restriction to the application.In the accompanying drawings：
Fig. 1 is shown sets a kind of structural representation of chamfering in backlight module in the prior art；
Fig. 2 show a kind of sectional view of backlight module provided herein；
Fig. 3 show a kind of structural representation of the first LED provided herein；
Fig. 4 show a kind of structural representation of the second LED provided herein；
Fig. 5 show one kind of the first LED and the second LED in the LED/light source of backlight module provided herein
Arrangement schematic diagram；
Fig. 6 show the annexation schematic diagram of the second LED provided herein；
Fig. 7 show annexation figure when the first LED provided herein is divided into two groups；
Fig. 8 show another sectional view of backlight module provided herein；
Fig. 9 show a kind of structural representation of the display module of the application institute body；
Figure 10 show a kind of sectional view of display panel provided herein；
Figure 11 show a kind of circuit diagram of display panel provided herein；
Figure 12 show a kind of structural representation of display device provided herein.
Embodiment
Some vocabulary have such as been used to censure specific components among specification and claim.Those skilled in the art should
It is understood that hardware manufacturer may call same component with different nouns.This specification and claims are not with name
The difference of title is used as the mode for distinguishing component, but is used as the criterion of differentiation with the difference of component functionally.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer in receivable error range, those skilled in the art can solve described in the range of certain error
Technical problem, basically reaches the technique effect.In addition, " coupling " one word is herein comprising any direct and indirect electric property coupling
Means.Therefore, if a first device is coupled to a second device described in text, representing the first device can directly electrical coupling
The second device is connected to, or the second device is electrically coupled to indirectly by other devices or coupling means.Specification
Subsequent descriptions for implement the application better embodiment, so it is described description be for the purpose of the rule for illustrating the application,
It is not limited to scope of the present application.The protection domain of the application is worked as to be defined depending on the appended claims person of defining.
Fig. 2 show a kind of sectional view of backlight module provided herein, referring to Fig. 2, and the application provides a kind of back of the body
Optical mode group 100, including LED/light source 10, light guide plate 20 and the optical film 21 set gradually, backlight module 100 is close to LED/light source
10 side is provided with chamfering 22；
LED/light source 10 includes some first LEDs 101 and at least one second LED 102, and the second LED 102 is located at
The position of chamfering 22 of backlight module 100, the first LED 101 is located at the non-chamfering position of backlight module 100, the second LED 102
Diameter be less than the first LED 101 diameter.
Specifically, when needing backlight module 100 setting chamfering 22 close to the side of LED/light source 10, referring to Fig. 1, fall
Space at the position of angle 22 is small compared to the space at non-chamfering, can not place existing LED at the position of chamfering 22, such as
This, can sacrifice the arrangement space of the corner LED of backlight module 100.If removing the LED or LED is past at the position of chamfering 22
Arrangement is concentrated at center, will all be caused the phenomenon shaded at the luminance nonuniformity of backlight module 100, the position of chamfering 22, and be influenceed display device
Display effect.The application is improved the above-mentioned problems in the prior art, specifically refers to Fig. 2, the application institute
The corner location of the backlight module 100 of offer is again provided with chamfering 22, and the is set at the position of chamfering 22 of backlight module 100
Two LEDs 102, the first LED 101, and the diameter of the second LED 102 are provided with the non-angular position of backlight module 100
Less than the diameter of the first LED 101, less second LED 102 of size can be placed in the chamfering 22 of backlight module 100
At position, the problem of position of 100 chamfering of backlight module 22 is shaded is effectively prevent, is conducive to raising backlight module 100 to be provided
Light source uniformity, and then be conducive to improve display effect.
It should be noted that the quantity for the LED placed in the application in the position of chamfering 22 of backlight module 100 can basis
The space size of the chamfering position of backlight module 100 determines that each position of chamfering 22 at least needs to place second LED
102。
Alternatively, the first LED 101 includes the first signal input part 1011, and it is defeated that the second LED 102 includes secondary signal
Enter end 1021, the first LED 101 receives the first driving voltage by the first signal input part 1011, and the second LED 102 passes through
Secondary signal input 1021 receives the second driving voltage.
Specifically, Fig. 3 show a kind of structural representation of the first LED 101 provided herein, and Fig. 4 is shown
A kind of structural representation of second LED 102 provided herein.Referring to Fig. 3, the first LED 101 in the application includes
First signal input part 1011, each first LED 101 receives the first driving voltage by its first signal input part 1011,
Receive after corresponding first driving voltage, the first LED 101 will be lit.Referring to Fig. 4, the second LED in the application
102 include secondary signal input 1021, and each second LED 102 receives second by its secondary signal input 1021 and driven
Voltage, after corresponding second driving voltage is received, the second LED 102 will be lit.The application is by the first LED
101 provide the first driving voltage, and the second driving voltage is provided to the second LED 102, can be achieved to the first LED 101 and second
The control respectively of LED 102, in this way, being conducive to improving the use flexibility of backlight module 100 provided herein.
Alternatively, the second driving voltage is more than the first driving voltage, and the luminous intensity of the second LED 102 is equal to the first LED
The luminous intensity of lamp 101.
Specifically, the second driving voltage that the application is transmitted to the second LED 102 is more than what is transmitted to the first LED 101
Driving voltage, that is to say, that be arranged on less second LED 102 of size at the position of 100 chamfering of backlight module 22 by larger
The second driving voltage drive, to improve the luminous intensity of less second LED 102 of size, and then make it that size is smaller
The second LED 102 luminous intensity it is identical with the hair luminous intensity of larger-size first LED 101.In this way, the whole back of the body
The luminous intensity of each LED is equal in the LED/light source 10 of optical mode group 100, substantially increases the LED/light source of backlight module 100
10 uniformity of luminance, is more beneficial for lifting display effect.
Alternatively, the quantity of the second LED 102 is N, and N >=2, each second LED 102 is connected in series.
Specifically, in order to attractive in appearance, generally set respectively close to two corners of the side of LED/light source 10 in backlight module 100
A chamfering 22 is put, at least provided with second LED 102 at the position of each chamfering 22 of backlight module 100, shown in Fig. 2
In embodiment, second LED 102 is provided with the position of each chamfering 22 of backlight module 100.Specifically, shown in Fig. 5
For a kind of arrangement schematic diagram of the first LED and the second LED in the LED/light source of backlight module provided herein, Fig. 6 institutes
It is shown as the annexation schematic diagram of the second LED provided herein.In Fig. 5, in two chamferings 22 of backlight module 100
One the second LED 102 of setting, and the two second LEDs 102 are connected in series respectively is put, referring to Fig. 6, in this way, can be to this
Two the second LEDs 102 provide the second driving voltage simultaneously, so that the luminous intensity of two the second LEDs 102 is consistent,
Also with regard to that can be consistent the brightness at 100 two chamferings 22 of backlight module.
Alternatively, each first LED 101 is divided into the first LED 101 in M control group, M >=2, each control group
It is independent luminous.
For example, when LED/light source 10 includes 18 the first LEDs 101, each LED can be divided into an independent zones
Domain, that is, 18 the first LEDs 101 are divided into 18 control groups, each first LED 101 is located at a control group,
Can independently it light.In the case where the external environment light such as outdoor is relatively strong, the whole points of 18 the first LEDs 101 can be controlled
It is bright, to provide enough display brightness.In the case that ambient light is dark indoors, 18 the first LEDs 101 can be controlled
Light a part therein, for example, light 1/2nd or 1/3rd in 18 the first LEDs 101, with adapt to it is indoor compared with
Dark environment, the display brightness of relative comfort is provided for user, and can save the power consumption of backlight module 100.According to ring
The power of environmental light, can suitably adjust the quantity for the first LED 101 lighted, and to balance display brightness, reduce backlight module
100 power consumption.It should be noted that in the case of dark, the application can be according to needed for the strong and weak determination of ambient light
The quantity for the first LED 101 lighted, light is darker, and the quantity of required the first LED 101 lighted is fewer, display brightness
Comfort level is higher, also more can save the power consumption of the backlight module 100 in the case of dark.
Alternatively, each first LED 101 is divided into two control groups, respectively the first control group and the second control group, the
Each first LED 101 in one control group is connected in series, and each first LED 101 in the second control group is connected in series, adjacent
The first LED 101 respectively be located at the first control group and the second control group；First in first control group and the second control group
LED 101 is independent luminous.
Specifically, referring to Fig. 7, the connection that Fig. 7 show when the first LED provided herein is divided into two groups is closed
System's figure, when each first LED 101 is divided into two control groups, the first adjacent LED 101 is located at the first control respectively
Each first LED (being respectively the first LED 201,203 and 205) series connection in group and the second control group, the first control group connects
Connect, each first LED (being respectively the first LED 202,204 and 206) in the second control group is connected in series, to the first control
Combine the first driving voltage that the second control group transmitted equal., can be only to the first control combination in the case of dark
One of which in second control group provides the first driving voltage, makes the control group corresponding first of the driving voltage of offer first
LED lights, and corresponding first LED of control group for not providing the first driving voltage does not light, due to the first adjacent LED
Lamp is located at different control groups respectively, is user to adapt to the environment of dark equivalent to alternately the first LED is lighted
The display brightness of relative comfort is provided, and backlight power consumption can be saved.
Alternatively, in each first LED 101, the spacing between two neighboring first LED 101 is equal.
Specifically, referring to Fig. 5, the application the space D 0 between two neighboring first LED 101 is designed as it is equal,
Just it is so that the arrangement density of each first LED 101 is homogeneous, in this way, when lighting each first LED 101, or light interval
During the first LED 101 of identical the first LED of quantity 101, the first LED 101 being lit is enabled in whole backlight mould
Light emitted by 100 surfaces of group is more uniform, is more beneficial for improving the light uniformity of backlight module 100, is conducive to lifting
The display effect of display module 200 and display device.
Alternatively, in the direction perpendicular to the place plane of light guide plate 20, the height of the second LED 102 and the first LED 101
Spend difference H≤0.1mm.
Specifically, referring to Fig. 5, the size less second that the application will be arranged at the position of 100 chamfering of backlight module 22
The height design of LED 102 be arranged on backlight module 100 it is non-fall angular position larger-size first LED 101
It is highly identical or approximate, will the difference in height of the two be designed as being less than or equal to 0.1mm so that from the first LED 101 and the
The path that the light that two LEDs 102 are projected reaches light guide plate 20 is identical or gap very little, such luminous intensity loss
Degree is also close, so that reaching the similar intensity of the light on the surface of backlight module 100, makes the bright of whole backlight module 100
Degree is more uniform.It should be noted that the height difference H of the second LED 102 and the first LED 101 is by calculating in the application
Difference asks what is thoroughly deserved again between the height h2 of second LED 102 and the height h1 of the first LED 101.
Alternatively, the width of the first LED 101 is that the width of the LED 102 of D1,3mm≤D1≤3.8mm, second is D2,
1.5mm≤D2≤2mm。
By taking the backlight module 100 of small size display device as an example, generally, the first LED 101 in backlight module 100
Width range is 3mm≤D1≤3.8mm, when backlight module 100 is provided with chamfering 22, because there being space at the position of chamfering 22
Limit, the size of the second LED 102 at the position of chamfering 22 is less than the size of the first LED 101, and the application can be according to
At the position of angle 22 size in space by the size design of the second LED 102 in the range of 1.5mm≤D2≤2mm, for example can be by
The width of two LEDs 102 elects D2=1.8mm, that is, the second LED 102 for small package being set at the position of chamfering 22 as, with
Avoid the problem of shading at the position of chamfering 22 occurs in backlight module 100.
Alternatively, optical film 21 includes diffusion sheet 23, lower brightening piece 24 and the upper brightening piece 25 set gradually, diffusion sheet 23
Set close to light guide plate 20.
Specifically, Fig. 8 is referred to, Fig. 8 show another sectional view of backlight module provided herein, the application
Backlight module 100 in optical film 21 include diffusion sheet 23, lower brightening piece 24 and upper brightening piece 25, light guide plate 20 reflect light
Initially enter in diffusion sheet 23, the basic composition of diffusion sheet 23 is diffusion layer+base material+protective layer, wherein base material is that transmitance is high
Material, such as polyethylene terephtalate, polycarbonate, diffusion layer and protective layer generally use acrylic tree
Fat.The application can allow light to produce diffusing reflection through diffusion coating, be distributed uniform light by setting diffusion sheet 23, protect
Demonstrate,prove brightness homogenization in backlight source module face.In addition, the application increases under also being set in side of the diffusion sheet 23 away from light guide plate 20
Mating plate 24 and upper brightening piece 25, by the collective effect of lower brightening piece 24 and upper brightening piece 25, backlight can be lifted on the whole
The brightness of module 100, so as to be conducive to being lifted the display brightness and display effect of the application display module 200 and display device.
Alternatively, backlight module 100 also includes reflector plate 26, and reflector plate 26 is arranged on light guide plate 20 away from optical film 21
Side.
Specifically, continuing with referring to Fig. 8, the application can also be in the bottom of light guide plate 20, i.e., light guide plate 20 is away from optical film
21 side sets reflector plate 26, and the light part that LED/light source 10 is sent is directly entered light guide plate 20, and another part can be by anti-
Penetrate and enter light guide plate 20 after the reflex of piece 26, so that the light that LED/light source 10 is sent can enter leaded light to greatest extent
Plate 20, is conducive to improving the light source utilization ratio of the application backlight module 100.
It should be noted that when the chamfering 22 in backlight module 100 provided herein and horizontal direction angle compared with
When big, it is also required to set corresponding chamfering on light guide plate 20.
Based on same inventive concept, the application provides a kind of display module 200, and Fig. 9 show the aobvious of the application institute body
Show a kind of structural representation of module 200, the display module 200 includes backlight module 100 and display panel 300, wherein backlight
Module 100 is backlight module 100 provided herein.The embodiment of the application display module 200 can be found in above-mentioned backlight mould
The embodiment of group 100, repeating part, here is omitted.It should be noted that the display panel in the application display module 200
300 can be that liquid crystal display panel can also be organic EL display panel.
When the display panel 300 of the application is liquid crystal display panel, referring to Figure 10 and Figure 11, Figure 10 show the application
A kind of a kind of sectional view of the display panel provided, circuit that Figure 11 show display panel provided herein is constituted
Figure；The liquid crystal display panel 300 includes the array base palte 30 and color membrane substrates 40 being oppositely arranged, array base palte 30 and color membrane substrates
Liquid crystal layer 50 is provided between 40.Crisscross a plurality of grid line 13 and a plurality of data lines 14 are provided with array base palte 30, it is many
Bar grid line 13 and a plurality of data lines 14 limit in multiple pixel cells 60, each pixel cell 60 and are provided with thin film transistor (TFT) 57
With pixel electrode 81, the grid 63 of thin film transistor (TFT) 57 is electrically connected with grid line 13, and source electrode 62 is electrically connected with data wire 14, drain electrode 61
Electrically connected with pixel electrode 81；Color membrane substrates 40 include latticed black matrix, and the array being arranged in black matrix opening
Multiple color blockings of arrangement, color blocking includes red color resistance, green color blocking and blue color blocking.By between pixel electrode and public electrode
Electric field controls liquid crystal molecule deflection, so as to reach display effect.
Based on same inventive concept, the application provides a kind of display device, show the application referring to Figure 12, Figure 12 and carried
A kind of structural representation of the display device of confession, the display device 400 includes display module 200, and the display module is the application
In display module 200.Display device 400 provided herein can be：Mobile phone, tablet personal computer, television set, display,
Any product or part with real function such as notebook computer, DPF, navigator.Display device 400 in the application
Embodiment can be found in the embodiment of above-mentioned display module, repeating part, here is omitted.
By various embodiments above, the beneficial effect that the application is present is：
In backlight module provided by the present invention, display module and display device, backlight module is close to the one of LED/light source
Side is provided with chamfering, and LED/light source includes the first LED and the second LED, particularly, is set in the position of backlight module chamfering
There is LED, the first LED is arranged on to the non-chamfering position of backlight module, in this way, placing size less the in chamfering position
Two LEDs, effectively prevent the problem of backlight module chamfering position is shaded, and be conducive to improving the light source that backlight module is provided
Uniformity, and then be conducive to improving the display effect of display module and display device.
Some preferred embodiments of the application have shown and described in described above, but as previously described, it should be understood that the application
Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations,
Modification and environment, and above-mentioned teaching or the technology or knowledge of association area can be passed through in invention contemplated scope described herein
It is modified., then all should be in this Shen and the change and change that those skilled in the art are carried out do not depart from spirit and scope
Please be in the protection domain of appended claims.
Claims (13)
1. a kind of backlight module, it is characterised in that including the LED/light source, light guide plate and optical film set gradually, the backlight mould
Group is provided with chamfering in the side close to the LED/light source；
The LED/light source includes some first LEDs and at least one second LED, and second LED is located at the backlight
The chamfering position of module, first LED is located at the non-chamfering position of the backlight module, the diameter of second LED
Less than the diameter of first LED.
2. backlight module according to claim 1, it is characterised in that：First LED includes the first signal input part,
Second LED includes secondary signal input, and first LED receives first by first signal input part and driven
Dynamic voltage, second LED receives the second driving voltage by the secondary signal input.
3. backlight module according to claim 2, it is characterised in that：Second driving voltage is more than the described first driving
Voltage, the luminous intensity of second LED is equal to the luminous intensity of first LED.
4. backlight module according to claim 1, it is characterised in that：The quantity of second LED is N, N >=2, each institute
The second LED is stated to be connected in series.
5. backlight module according to claim 1, it is characterised in that：Each first LED is divided into M control group, M
>=2, each first LED in the control group is independently luminous.
6. backlight module according to claim 5, it is characterised in that：Each first LED is divided into two control groups,
Each first LED in respectively the first control group and the second control group, first control group is connected in series, and described
Each first LED in two control groups is connected in series, and adjacent first LED is located at first control group respectively
With second control group；
The first LED in first control group and second control group independently lights.
7. backlight module according to claim 1, it is characterised in that：In each first LED, two neighboring described
Spacing between one LED is equal.
8. backlight module according to claim 1, it is characterised in that：In the side perpendicular to plane where the light guide plate
To height difference H≤0.1mm of second LED and first LED.
9. backlight module according to claim 1, it is characterised in that：The width of first LED is D1,3mm≤D1
≤ 3.8mm, the width of second LED is D2,1.5mm≤D2≤2mm.
10. backlight module according to claim 1, it is characterised in that：The optical film include set gradually diffusion sheet,
Lower brightening piece and upper brightening piece, the diffusion sheet are set close to the light guide plate.
11. backlight module according to claim 1, it is characterised in that：The backlight module also includes reflector plate, described anti-
Penetrate piece and be arranged on side of the light guide plate away from the optical film.
12. a kind of display module, it is characterised in that including backlight module and display panel, wherein the backlight module is right
It is required that 1 to 11 any described backlight module.
13. a kind of display device, it is characterised in that including the display module described in claim 12.
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| CN201710638372.0A CN107179632A (en) | 2017-07-31 | 2017-07-31 | Backlight module, display module and display device |
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| CN201710638372.0A CN107179632A (en) | 2017-07-31 | 2017-07-31 | Backlight module, display module and display device |
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Application publication date: 20170919 |