CN107219683A - Display device, backlight module and back light - Google Patents
Display device, backlight module and back light Download PDFInfo
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- CN107219683A CN107219683A CN201710610768.4A CN201710610768A CN107219683A CN 107219683 A CN107219683 A CN 107219683A CN 201710610768 A CN201710610768 A CN 201710610768A CN 107219683 A CN107219683 A CN 107219683A
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- luminescence chip
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- light
- fluorescent
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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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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- 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 discloses a kind of display device, backlight module and back light.The back light includes：Multiple luminescence unit LED particles, wherein, LED particle includes：The first separate cavity and the second cavity, the first luminescence chip being arranged in the first cavity and the first phosphor mixture, the second luminescence chip and the second phosphor mixture being arranged in the second cavity, wherein, the light that the second fluorescent mixture is produced has different colourities from the light that the first fluorescent mixture powder is produced；And connection circuit, it is respectively connected with the first luminescence chip and the second luminescence chip, for applying the first electric current to the first luminescence chip, the second electric current is applied to the second luminescence chip, wherein, the ratio of the first electric current and the second electric current is adjustable.The current ratio that the present invention provides regulation two chips of LED particle realizes that back light colourity is adjusted, and can realize the colourity adjustment of backlight module, the display effect of liquid crystal panel is not interfered with again.
Description
Technical field
The present invention relates to display technology field, more particularly, to a kind of display device, backlight module and back light.
Background technology
Liquid crystal display device is a kind of device of passive luminescence display, and liquid crystal panel does not light in itself, but by liquid crystal
What the backlight module below panel illuminated.Backlight module includes back light, light guide plate, reflector plate and blooming piece etc., backlight
When the light that module is sent is irradiated on liquid crystal panel, light can first pass through lower polarizer and appear upwards, different liquid crystal panels
Light can be changed polarization direction by this when according to the mechanism of oneself, and following light contacts to colored filter produce face
Color, finally incides upper polarizer.After by liquid crystalline transition polarization direction, there is some light to there is part to be inhaled with outgoing
Receive, each pixel can determine the intensity of emergent ray respectively on whole liquid crystal panel, so as to produce image.
Wherein, in the prior art, after the back light of backlight module is made, the colourity of backlight module light be it is fixed,
Due to different liquid crystal chromaticity specification difference, it is necessary to select the different backlight module of light colourity to correspond to, usual backlight mould
Group production firm can produce the backlight module of multi-light colourity, be matched with meeting backlight module color lump with liquid crystal panel colourity
Requirement.But, the light colourity of backlight module is limited, and often occurring can not find and liquid crystal panel chromaticity match
The problem of preferable backlight module, can now influence be produced to the display effect for influenceing liquid crystal panel.
In addition, when selecting backlight module, the backlight module that the theoretical colourity of liquid crystal panel matches is generally selected, in liquid
Crystal panel into the color-coordinate shift that liquid crystal panel occurs in the technical process of box phenomenon, the actual colourity of liquid crystal panel with it is theoretical
Occurs difference between colourity, now, in order that the actual colourity of liquid crystal panel matches with backlight module, prior art is generally led to
Cross the 3gamma programs of adjustment liquid crystal panel to adjust backlight module colourity, still, the method for adjustment can cause liquid crystal panel
Penetrance is reduced, and also can produce influence to the display effect for influenceing liquid crystal panel.
Therefore it provides a kind of adjustable back light of light colourity, backlight module and display device, and liquid is not influenceed
The display effect of LCD panel, is this area urgent problem to be solved.
The content of the invention
In view of this, the invention provides a kind of display device, backlight module and back light, solve in the prior art
Backlight module colourity is adjusted by adjusting the 3gamma programs of liquid crystal panel and causes the skill of the display effect difference of liquid crystal panel
Art problem.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of back light.
The back light includes：Multiple luminescence unit LED particles, wherein, the LED particle includes：Separate
One cavity and the second cavity, the first luminescence chip being arranged in first cavity and the first phosphor mixture, it is arranged at
The second luminescence chip and the second phosphor mixture in second cavity, wherein, the second fluorescent mixture powder and institute
Stating the first fluorescent mixture includes fluorescent material, and the light that the second fluorescent mixture is produced is produced with first fluorescent mixture
Light there are different colourities；And connection circuit, it is respectively connected with first luminescence chip and second luminescence chip,
For applying the first electric current to first luminescence chip, the second electric current is applied to second luminescence chip, wherein, described the
The ratio of one electric current and second electric current is adjustable.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of backlight module.The backlight module includes the present invention and provided
Any one back light.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of display device.The display device includes the present invention and provided
Any one backlight module.
Compared with prior art, display device of the invention, backlight module and back light, realize following beneficial effect
Really：
The LED particle of back light sets two independent cavitys, and each cavity is respectively arranged with luminescence chip and fluorescence
Mixture, the colourity of the light of the fluorescent mixture generation of different cavitys is different, and two luminescence chips individually apply electric current,
The current ratio applied by adjusting two luminescence chips can adjust the colourity for the light that whole LEDs particle is produced, and make backlight mould
The liquid crystal panel of the different chromaticity specifications of group matching, also, when color-coordinate shift occurs for liquid crystal panel, without adjusting 3gamma journeys
Sequence, it is possible to increase the penetrance and response speed of liquid crystal panel, in addition, by two cavity packages in same LED particle, two
The light mixing distance of individual cavity is short, it is to avoid the aberration problem between the light of two kinds of different colourities.
By referring to the drawings to the detailed description of the exemplary embodiment of the present invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiments of the invention, and even
It is used for the principle for explaining the present invention together with its explanation.
The Structure explosion diagram for the display device that Fig. 1 provides for the embodiment of the present application；
The structural representation for the back light that Fig. 2 provides for the embodiment of the present application；
The structural representation for the LED particle that Fig. 3 provides for the embodiment of the present application；
The chromatic diagram that Fig. 4 provides for the embodiment of the present application；
Fig. 5 is the backlight module and Structure explosion diagram that the present embodiment is provided；And
Fig. 6 is the structural representation of display device provided in an embodiment of the present invention.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments does not limit this
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
The present invention relates to backlights for display devices module, the knot for the display device that Fig. 1 provides for the embodiment of the present application
Structure explosive view, suitably with reference to Fig. 1, display device includes backlight module 10, upper polarizer 20, color membrane substrates 30, liquid crystal layer 40, battle array
Row substrate 50 and lower polarizer 60, wherein, backlight module 10 includes back light 11 and optics module 12, and optics module 12 includes
Light guide plate, reflector plate, brightening piece etc., the light that back light 11 is produced are irradiated to lower polarizer 60 through optics module 12, first lead to
Cross down polarizer 60 to appear upwards to liquid crystal layer 40, light is changed polarization direction, following light contacts to coloured silk by liquid crystal layer 40
RGB (RGB) color blocking is provided with ilm substrate 30, color membrane substrates 30, upper polarizer is incided after producing color via color blocking
20, produce image through upper polarizer 20.
Wherein, the characteristic based on color blocking, red color resistance passes through the part of a length of red light wavelength of light medium wave, green color blocking
Pass through the part of a length of green wavelength of light medium wave, blue color blocking passes through the part of a length of blue light wavelength of light medium wave, is
Ensure pass through color blocking through the light that liquid crystal layer 40 changes polarization direction, generally, the light of the generation of back light 11 is
White light, or it is similar to 1 for RGB ratios：1：A kind of 1 mixed light.
The structural representation for the back light that Fig. 2 provides for the embodiment of the present application, suitably with reference to Fig. 2, in a kind of embodiment
In, the plurality of LEDs that back light 11 includes flexible PCB 111 and a is arranged in order in the first direction on flexible PCB 111
Connection circuit 113 is additionally provided with particle 112, flexible PCB 111, the connection circuit 113 is used for into LED particle 112
Luminescence chip applies voltage, so that LED particle is luminous, produces light.
The structural representation for the LED particle that Fig. 3 provides for the embodiment of the present application, suitably with reference to Fig. 3, LED particle 112 includes
Separate the first cavity 112L and the second cavity 112R, in one embodiment, LED particle 112 include support 1124, branch
The first cavity 112L and the second cavity 112R are formed after the injection molding of frame 1124.
In the first cavity 112L, the first luminescence chip 1121L and the first fluorescent mixture 1122L, the first hair are provided with
Optical chip 1121L excites the first fluorescent mixture 1122L so that the first cavity 112L produces the first light；In the second cavity
In 112R, it is provided with the second luminescence chip 1121R and the second fluorescent mixture 1122R, the second luminescence chip 1121R excites second
Fluorescent mixture 1122R so that the second cavity 112R produces the second light.
Wherein, the second fluorescent mixture 1122R and the first fluorescent mixture 1122L include fluorescent material, and the second fluorescence
The light that mixture 1122R is produced has different colourities from the first fluorescent mixture 1122L light produced.
First luminescence chip 1121L and the second luminescence chip 1121R are connected with being connected circuit 113 respectively, connect circuit
113 apply the first electric current to the first luminescence chip 1121L, and the second electric current is applied to the second luminescence chip 1121R.The size of electric current
The brightness of the light of cavity generation is influenceed, the first electric current is different from the ratio of the second electric current so that the first cavity 112L and second
In cavity 112R the light of different colourities account for light total amount ratio it is different, thus, it is equal for the total current that applies to LED particle
In the case of, the allocation proportion of the first electric current of regulation and the second electric current can adjust light in two cavitys of LED particle and account for light total amount
Ratio, and then the adjustment of the colourity in two cavitys after light colour mixture is realized, namely realize the colourity for the light that LED particle is integrally produced
Adjustment, that is to say, that by adjusting the ratio of the first electric current and the second electric current, the purpose of regulation LED particle colourity can be achieved.
In summary, the back light that the embodiment of the present application is provided, the LED particle of back light sets two independent chambers
Body, each cavity is respectively arranged with luminescence chip and fluorescent mixture, the colourity of the light of the fluorescent mixture generation of different cavitys
Difference, and two luminescence chips individually apply electric current, and the current ratio that two luminescence chips apply is adjustable, so that, pass through
The ratio of the first electric current and the second electric current is adjusted, the purpose of regulation LED particle colourity is realized.
Therefore, the back light provided using the embodiment of the present application, can by adjust two luminescence chips electric current come
LED particle colourity is adjusted, different color blending effects is realized, the liquid crystal panel of different chromaticity specifications can be matched, also, in liquid crystal
When color-coordinate shift occurs for panel, without adjusting 3gamma programs, it is possible to increase the penetrance and response speed of liquid crystal panel, this
Outside, by two cavity packages in same LED particle, the light mixing distance of two cavitys is short, it is to avoid the light of two kinds of different colourities it
Between aberration problem.
Further, in a kind of optional embodiment, the first luminescence chip 112L is identical with the second luminescence chip 112R,
For example, the first luminescence chip 112L and the second luminescence chip 112R are R chips, or it is G chips or is B chips.
Using the embodiment, two cavitys of LED particle use luminescence chip of the same race so that two cavitys have close
Launching efficiency and the life-span, lifting back light uses colour consistency for a long time, it is not easy to color occurs and declines problem.
Further, the first fluorescent material is made with the second fluorescent material of identical material, makes two chambers of LED particle
Body uses luminescence chip of the same race and fluorescent material of the same race, and the luminescence chip of two cavitys is consistent with the optical property of fluorescent material, makes
Obtaining two cavitys has identical launching efficiency and life-span, it is ensured that back light uses colour consistency for a long time, it is to avoid color occur
Decline problem.
In a kind of optional embodiment, the fluorescent mixture in cavity includes fluorescent material and colloidal materials, wherein, fluorescence
Powder mainly serves optically, and colloidal materials play mixing, protection fluorescent material and fixation, and fluorescent material is in fluorescent mixture
The colourity of concentration and fluorescent material, can influence the colourity of fluorescent mixture.Specifically, the first fluorescent mixture and second glimmering
Light mixture includes fluorescent material and colloidal materials.In the light and the second fluorescent mixture hair for realizing that the first fluorescent mixture is sent
The colour difference different time of the light gone out, can be by setting the concentration of fluorescent material in the first fluorescent mixture and the second fluorescent mixture different
To realize, or, can be by setting the colourity difference of fluorescent material in the first fluorescent mixture and the second fluorescent mixture to realize.
For example, the fluorescent material in the first fluorescent mixture and the second fluorescent mixture uses silicate, wherein, silicate
The general name for the compound being made up of element silicon, oxygen element and metallic element, when the metallic element of silicate is different, silicate
Color is different, thus, the fluorescent material in fluorescent material and the second fluorescent mixture in the first fluorescent mixture for metallic element not
Same silicate, so that the colourity of the fluorescent material in the first fluorescent mixture and the fluorescent material in the second fluorescent mixture is different,
And then the photochromism for sending light and the second fluorescent mixture that the first fluorescent mixture sends is different.
And for example, the fluorescent material in the first fluorescent mixture and the second fluorescent mixture using yag crystal (
That is YAG), wherein, pure yag crystal is water white transparency, by crystal doping different metal, crystal being presented
Different colors, specifically such as, zirconium is used when synthesizing yag crystal, then garnet is presented red, adds scandium oxide, also
The tone of red garnet can be changed, make garnet that bright red or peony etc. is presented.Make when synthesizing yag crystal
With ytterbium, zirconium and cerium, then gained crystal is in green, wherein, the content of cerium ion is different in crystal, gained garnet have it is dark green,
BG and the different tones such as yellowish green, if europium doped, zirconium and terbium, blueness can be presented in the garnet crystal of synthesis.Thus, first is glimmering
The fluorescent material in fluorescent material and the second fluorescent mixture in light mixture is doping different metal element or different metal content
YAG so that the colourity of the fluorescent material in the first fluorescent mixture and the fluorescent material in the second fluorescent mixture is different, and then make
The photochromism that the light and the second fluorescent mixture that first fluorescent mixture is sent are sent is different.
Further, the colourity for the light that the first fluorescent mixture is produced has the first chromaticity coordinate, second on a chromaticity diagram
The colourity for the light that fluorescent mixture is produced has the second chromaticity coordinate on a chromaticity diagram, wherein, chromatic diagram be with chromaticity coordinate x and
The X-Y scheme that y is drawn, the chromatic diagram that Fig. 4 provides for the embodiment of the present application, as shown in figure 4, x is the trunnion axis of chromatic diagram, y is color
The vertical axis of figure is spent, the curve of arch is made up of pure 380 to 770nm spectrum colour, and colourity is the color code determined by wavelength,
Tone such as 700nm light is red, and the tone of 579nm light is yellow, and the tone of 510nm light is green etc..
Appropriate to refer to Fig. 4, the point that the first chromaticity coordinate (x1, y1) is demarcated on a chromaticity diagram is point L, the second chromaticity coordinate
The point that (x2, y2) is demarcated on a chromaticity diagram is point R, wherein, as described above, in order to ensure to change polarization direction through liquid crystal layer
Light can pass through color blocking, the light of back light output for white light or approximate white light mixed light, namely the generation of the first cavity light
The light for the LED particle that the light colour mixture produced with the second cavity is obtained is white light or the mixed light of approximate white light.
Generally, due to different regions or not, agnate people is different to identification, the hobby of color, different
The chromaticity requirements for the display panel that client's counter plate manufacturer provides are also different, for example, there have some clients to need to be somewhat partially blue aobvious
Show panel, some clients need somewhat yellow display panel partially.Panel vendor is backlight module and the panel of itself is matched,
It may require that the chromaticity coordinate of the colourity for the light that back light is exported on a chromaticity diagram is predetermined value, in other words, may require that backlight light
The point of the chromaticity coordinate demarcation of the colourity of the light of source output on a chromaticity diagram is by this fixing point in a fixing point, the application
It is defined as predetermined white point.Wherein, according to customer demand, the predetermined white point can be the chromaticity coordinates of standard white light, or slightly
The chromaticity coordinates of micro- deviation standard white light.
Wherein, in a kind of optional embodiment, the abscissa x1 of the first chromaticity coordinate and the horizontal seat of the second chromaticity coordinate
Mark the difference between x2 and be more than or equal to 0.005 and less than or equal to 0.02, the ordinate y1 of the first chromaticity coordinate and the second colourity are sat
Difference between target ordinate y1 is more than or equal to 0.005 and less than or equal to 0.02, in this embodiment, the first colourity is limited respectively
The minimum value of difference between coordinate and the second chromaticity coordinate transverse and longitudinal coordinate, defines the light and second that the first fluorescent mixture is sent
The colourity minimum difference of the light sent of fluorescent mixture, it is ensured that light and the second fluorescent mixture that the first fluorescent mixture is sent
The light sent colourity it is different；The maximum between the first chromaticity coordinate and the second chromaticity coordinate transverse and longitudinal coordinate is limited respectively,
After defining that the light sent of light that the first fluorescent mixture sends and the second fluorescent mixture excites colour mixture through luminescence chip, energy
Access white light or the mixed light of approximate white light.
Further, the first luminescence chip and the second luminescence chip are blue luminescence chip, are meeting above-mentioned first
On the basis of chromaticity coordinate and the second chromaticity coordinate difference requirements, the abscissa of the first chromaticity coordinate is 0.3 to 0.5, the first color
The ordinate for spending coordinate is 0.4 to 0.6, and the abscissa of the second chromaticity coordinate is 0.08 to 0.18, the vertical seat of the second chromaticity coordinate
It is designated as 0.15 to 0.3.
With reference to Fig. 4, in this embodiment, by the restriction of the first chromaticity coordinate and the second chromaticity coordinate scope, by first
The light that fluorescent mixture is defined to produce has partially blue colourity, and the second fluorescent mixture is defined into the light produced with partially yellow
Colourity, the first luminescence chip and the second luminescence chip use blue chip, and blue chip long lifespan, launching efficiency is high, together
When, the inclined yellow of light that the first fluorescent mixture is sent, the light that the second fluorescent mixture is sent is partially blue, can obtain white light or near
Like the mixed light of white light.
For example, the first coordinate of the first chromaticity coordinate is 0.40, the second coordinate of the first chromaticity coordinate is 0.55, the second color
The first coordinate for spending coordinate is 0.15, and the second coordinate of the second chromaticity coordinate is 0.25.
Further, with continued reference to Fig. 4, in a kind of optional embodiment, the point L and colourity of the demarcation of the first chromaticity coordinate
Predetermined white point O distance is first apart from l on figure1, the point R and predetermined white point O of the demarcation of the second chromaticity coordinate distance are second
Apart from l2, wherein, predetermined white point is point of the chromaticity coordinate in chromatic diagram punctuate for the light that back light is exported, wherein, backlight light
The light of source output can be that RGB ratios are 1:1:1 white light, or it is approximately equal to 1 for RGB ratios:1:The mixing of 1 approximate white light
Light, for example, predetermined white point O coordinate is (0.30,0.31), or, predetermined white point O coordinate is (0.30,0.32).
It should be noted that (first apart from l for the distance between two points being related in the application1, second distance l2) use
Pythagorean theorem is calculated, specifically, if R (a1, a2), O (b1, b2), the distance between RO RO=[(a1-b1)2+(a2-b2)2]1/2。
Wherein, RO is second distance l2。
When adjusting the ratio of the first electric current and the second electric current, according to above-mentioned first apart from l1With second distance l2Ratio enters
Row adjustment so that the ratio of the first electric current and the second electric current is equal to second distance l2With first apart from l1Ratio, wherein, distance
The more remote point of predetermined white point, colourity and the colourity difference of predetermined white point are bigger, for producing the light of predetermined white point, adjust the distance
The demand of the light of remote colourity is just smaller；And the electric current of chip is bigger, the brightness for the light that cavity where luminescence chip is produced is got over
Height, the ratio that the light that the cavity is produced accounts for light total amount is bigger, thus, set the ratio of the first electric current and the second electric current to be equal to second
Apart from l2With first apart from l1Ratio, in l1>l2When, for producing predetermined white point O light, the first electric current is less than second
Electric current, disclosure satisfy that the ratio for accounting for light total amount for the light that the first cavity is sent is smaller, and the light sent less than the second cavity accounts for light
The ratio of total amount.
Further, in a kind of optional embodiment, with continued reference to Fig. 3, LED particle 112 also includes being arranged at first
The first fixture 1123L and the second fixture 1123R being arranged in the second cavity 112R, the first fixture in cavity 112L
1123L plays a part of fixed and connects the first luminescence chip 1121L, and the second fixture 1123R is fixed and connection second lights
Chip 1121R effect.First luminescence chip 1121L is fixed on the first fixture 1123L, and the second luminescence chip 1121R consolidates
Due on the second fixture 1123R.
First luminescence chip 1121L first end 1121L1, the first luminescence chip 1121L1 the second end 1121L2, second
Luminescence chip 1121R first end 1121R1 and the second luminescence chip 1121R the second end 1121R2 in a first direction on a successively
Arrangement.
Wherein, the first fixture 1123L has the first pin A1' and second pin A2', the first luminescence chip 1121L's
First end 1121L1 is connected with the first pin A1', the first luminescence chip 1121L the second end 1121L2 and second pin A2'
It is connected；Second fixture 1123R has the 3rd pin K1' and the 4th pin K2', the second luminescence chip 1121R first end
1121R1 is connected with the 3rd pin K1', and the second luminescence chip 1121R the second end 1121R2 is connected with the 4th pin K2'.
First pin A1', second pin A2', the 3rd pin K1' and the 4th pin K2' are connected with being connected circuit 113 respectively
Connect.Meanwhile, LED particle 112 is welded by the first pin A1', second pin A2', the 3rd pin K1' and the 4th pin K2'
With flexible PCB 111.
For a LEDs particle 112, connection circuit 113 is luminous to first via the first pin A1' and second pin A2'
Chip 1121L applies electric current, and connection circuit 113 is via the 3rd pin K1' and the 4th pin K2' to the second luminescence chip 1121R
Apply electric current.
Further, suitably referring to figs. 2 and 3 connection circuit 113 includes the first connection terminal A1, the second connection end
Sub- A2, the 3rd connection terminal K1 and the 4th connection terminal K2 totally four connection terminals, connection display dress after each connection terminal is drawn
The controller put, controller is applied to the first luminescence chip 1121L the first electric current with applying by four connection terminal regulations
To the second luminescence chip 1121R the second electric current.
Connect the connected mode of circuit 113 and each LED particle 112 as shown in Fig. 2 with reference in Fig. 3 LED particle it is each
Individual pin, in a first direction on a, first LED particle 112 first pin A1' the first connection terminals of connection A1, first LED
The connection terminal K1 of the 3rd pin K1' connections the 3rd of particle 112, the second pin A2' connections of last LED particle 112
Two connection terminal A2, the connection terminal K2 of the 4th pin K2' connections the 4th of last LED particle 112, in a first direction on a,
In each LED particle 112 of back light 11, other in addition to first LED particle 112 and last LED particle 112
LED particle 112, the second pin A2' of the first previous LED particle 112 of pin A1' connections of each LED particle 112, each
4th pin K2' of LED particle 112 connects the 3rd pin K1' of latter LED particle 112.
So as to which the first luminescence chip of each LED particle is serially connected, and applies the electric current of identical first；Each LED particle
The second luminescence chip be serially connected, apply the electric current of identical second.Each LED on the back light provided using the embodiment
Grain with being connected the connected mode of circuit, by identical connection terminal A1, A2, K1, K2 to each LED particle the first electric current of input and
Second electric current, line connection is simple, and the terminal of the connection display device controller of back light 11 is few.
It should be noted that each pin of LED particle 112 to the cabling for connecting circuit 113 shown in Fig. 2 is only used for the company of expression
Relation is connect, the application is not limited above-mentioned line position of walking, realize that pin is respectively held to circuit is connected on flexible PCB 111
The connection of son.
The back light embodiment provided above for the present invention, present invention also offers a kind of backlight module, the backlight mould
Group includes any one above-mentioned back light.Specifically, Fig. 5 is the backlight module and Structure explosion diagram that the present embodiment is provided,
In a kind of optional embodiment, suitably with reference to Fig. 5, the backlight module includes any one above-mentioned back light 11 and optical mode
Group, wherein, optics module includes light guide plate 121, diffusion sheet 122, the first brightening piece 123, the second brightening piece 124, shading glue 125
The release diaphragms 126 of PET are pasted with fixed on shading glue 125.
The LED particle of back light in the backlight module provided using the embodiment, backlight module sets two independences
Cavity, each cavity is respectively arranged with luminescence chip and fluorescent mixture, and the colourity of the fluorescent mixture of different cavitys is different,
And two luminescence chips individually apply electric current, the current ratio that two luminescence chips apply is adjustable, so that, pass through adjustment the
The ratio of one electric current and the second electric current, realizes the purpose of regulation LED particle colourity, can match the liquid crystal surface of different chromaticity specifications
Plate, also, when color-coordinate shift occurs for liquid crystal panel, without adjusting 3gamma programs, it is possible to increase the penetrance of liquid crystal panel
And response speed, in addition, by two cavity packages in same LED particle, the light mixing distance of two cavitys is short, it is to avoid two kinds
Aberration problem between the light of different colourities.
Present invention also offers a kind of display device, Fig. 6 is the structural representation of display device provided in an embodiment of the present invention
Figure, display panel 91 and housing 92 that the display device 90 includes, wherein, housing formation accommodation space, for accommodating display
Panel 91, housing 92 can be hard or flexibility, and the present invention is not specifically limited to this.Fig. 6 only using mobile phone as
Example, illustrates, it is to be understood that display device provided in an embodiment of the present invention to display device, can be computer, electricity
The display device that other have display function depending on, display device for mounting on vehicle etc., the present invention is not specifically limited to this.In display device
Backlight module can use any one backlight module provided in an embodiment of the present invention, with the back of the body provided in an embodiment of the present invention
The beneficial effect of optical mode group, specifically may be referred to the various embodiments described above illustrating for back light and backlight module, this
Embodiment will not be repeated here.
By above-described embodiment, back light, backlight module and display device of the invention, having reached following has
Beneficial effect：
The LED particle of back light sets two independent cavitys, and each cavity is respectively arranged with luminescence chip and fluorescence
Mixture, the colourity of the fluorescent mixture of different cavitys is different, and two luminescence chips individually apply electric current, passes through adjustment
The current ratio that two luminescence chips apply can adjust LED particle colourity, backlight module is matched the liquid of different chromaticity specifications
Crystal panel, also, when color-coordinate shift occurs for liquid crystal panel, without adjusting 3gamma programs, it is possible to increase liquid crystal panel is worn
Saturating rate and response speed, in addition, by two cavity packages in same LED particle, the light mixing distance of two cavitys is short, it is to avoid
Aberration problem between the light of two kinds of different colourities.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel are it should be understood that example above is merely to illustrate, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (14)
1. a kind of back light, it is characterised in that including：
Multiple LED particles, wherein, the LED particle includes：The first separate cavity and the second cavity, be arranged at it is described
The first luminescence chip and the first fluorescent mixture in first cavity, the second luminescence chip being arranged in second cavity and
Second fluorescent mixture, wherein, second fluorescent mixture includes fluorescent material, and second with first fluorescent mixture
The light that fluorescent mixture is produced has different colourities from the light that first fluorescent mixture is produced；And
Circuit is connected, is respectively connected with first luminescence chip and second luminescence chip, for being sent out to described first
Optical chip applies the first electric current, and the second electric current is applied to second luminescence chip, wherein, first electric current and described second
The ratio of electric current is adjustable.
2. back light according to claim 1, it is characterised in that first luminescence chip and the described second luminous core
Piece is identical.
3. back light according to claim 2, it is characterised in that
Fluorescent material in first phosphor mixture uses identical with the fluorescent material in second phosphor mixture
Material.
4. back light according to claim 3, it is characterised in that first fluorescent mixture and second fluorescence
Mixture includes fluorescent material and colloidal materials, wherein：
The concentration of fluorescent material is different with the concentration of fluorescent material in second fluorescent mixture in first fluorescent mixture；
And/or
The colourity of fluorescent material is different from the colourity of fluorescent material in second fluorescent mixture in first fluorescent mixture.
5. back light according to claim 3, it is characterised in that the fluorescent material is that silicate or yttrium-aluminium-garnet are brilliant
Body.
6. back light according to claim 1, it is characterised in that
The colourity for the light that first fluorescent mixture is produced has the first chromaticity coordinate on a chromaticity diagram, and second fluorescence is mixed
The colourity for the light that compound is produced has the second chromaticity coordinate on a chromaticity diagram；
Difference between the abscissa of first chromaticity coordinate and the abscissa of second chromaticity coordinate is more than or equal to 0.005
And less than or equal to 0.02, the difference between the ordinate of first chromaticity coordinate and the ordinate of second chromaticity coordinate is more than
Equal to 0.005 and less than or equal to 0.02.
7. back light according to claim 6, it is characterised in that first luminescence chip and the described second luminous core
Piece is blue luminescence chip, and the abscissa of first chromaticity coordinate is 0.3 to 0.5, the vertical seat of first chromaticity coordinate
0.4 to 0.6 is designated as, the abscissa of second chromaticity coordinate is 0.08 to 0.18, and the ordinate of second chromaticity coordinate is
0.15 to 0.3.
8. back light according to claim 6, it is characterised in that
The distance of predetermined white point is the first distance, second color on the point and the chromatic diagram of the first chromaticity coordinate demarcation
The distance of the point and the predetermined white point of spending coordinate demarcation is second distance；
The ratio of first electric current and second electric current is equal to the second distance and the ratio of first distance.
9. back light according to claim 1, it is characterised in that
The LED particle also includes the first fixture being arranged in first cavity and is arranged in second cavity
Second fixture, first fixture have the first pin and second pin, second fixture have the 3rd pin and
4th pin, first pin, the second pin, the 3rd pin and the 4th pin are electric with the connection respectively
Road is connected；
First luminescence chip is fixed on first fixture, and the first end of first luminescence chip and described the
One pin is connected, and the second end of first luminescence chip is connected with the second pin；
Second luminescence chip is fixed on second fixture, and the first end of second luminescence chip and described the
Three pins are connected, and the second end of second luminescence chip is connected with the 4th pin, wherein, the described first luminous core
The first end of piece, the second end of first luminescence chip, the first end of second luminescence chip and the second luminous core
Second end of piece is arranged in order in a first direction.
10. back light according to claim 9, it is characterised in that
The back light also includes flexible PCB, and multiple LED particles are arranged at the flexibility along the first direction
On circuit board, the flexible PCB includes the connection circuit.
11. back light according to claim 10, it is characterised in that
The connection circuit includes the first connection terminal, the second connection terminal, the 3rd connection terminal and the 4th connection terminal；
In said first direction, the first pin of first LED particle connects first connection terminal, first institute
The 3rd pin for stating LED particle connects second connection terminal, and the second pin connection of last LED particle is described
3rd connection terminal, the 4th pin of last LED particle connects the 4th connection terminal；
In said first direction, in each described LED particle of the back light, except first LED particle and institute
Other LED particles outside last LED particle are stated, the first pin of each LED particle connects the previous LED
The second pin of particle, the 3rd pin of the 4th pin latter LED particle of connection of each LED particle.
12. back light according to claim 10, it is characterised in that the LED particle includes support, the support shape
Into first cavity and second cavity.
13. a kind of backlight module, it is characterised in that including the back light any one of claim 1 to 12.
14. a kind of display device, it is characterised in that including：Display panel and backlight module, the backlight module are claim
Backlight module described in 13.
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| CN201710610768.4A CN107219683B (en) | 2017-07-25 | 2017-07-25 | Display device, backlight module and backlight source |
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| CN107219683B (en) | 2020-04-17 |
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