CN105629577B - Back light unit, display screen and display device - Google Patents
Back light unit, display screen and display device Download PDFInfo
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- CN105629577B CN105629577B CN201610200696.1A CN201610200696A CN105629577B CN 105629577 B CN105629577 B CN 105629577B CN 201610200696 A CN201610200696 A CN 201610200696A CN 105629577 B CN105629577 B CN 105629577B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Optics & Photonics (AREA)
- Liquid Crystal Display Device Control (AREA)
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Abstract
The embodiment of the invention discloses a kind of back light unit, display screen and display devices.The back light unit includes: light source, and the light source includes that multiple luminescence unit groups and at least one colour cast compensate luminescence unit；Each luminescence unit group includes the basic luminescence unit of at least three kinds sending different colours light；Light guide plate, the light guide plate include at least one incident side, and the luminescence unit group and colour cast compensation luminescence unit are oppositely arranged with the incident side, and colour cast compensation luminescence unit is set to the edge of the incident side.The technical solution of the embodiment of the present invention overcomes the colour cast problem of back light unit edge, improves image displaying quality.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of back light unit and include the back light unit
Display screen and display device.
Background technique
In the non-autonomous luminous display device such as liquid crystal display device, light usually is provided for display device by back light unit
Line, in the injection type backlight unit of side, generally using light emitting diode as backlight, by the effect of light guide plate, change into
Side light source is converted into the light source towards display screen by the direction for penetrating light, penetrates display screen via optical film layer, to realize display
The image display function of device.
, can be in series or in parallel using more light emitting diodes for issuing different colours light in back light unit, and by
Corresponding control unit is supplied to the stable electric current of each light emitting diode, so that each light emitting diode keeps stable brightness,
Maintain the normal display of various images.
However, leading to backlight list due to incomplete in the presence of assorted light colour mixture at the both ends of back light unit and edge
First both ends and edge colour mixture are incomplete, i.e., there are problems that colour cast in back light unit edge.
Summary of the invention
The present invention provides a kind of back light unit, display screen and display device, to overcome the colour cast of back light unit edge to ask
Topic improves image displaying quality.
The one side of the embodiment of the present invention provides a kind of back light unit, and the back light unit includes:
Light source, the light source include that multiple luminescence unit groups and at least one colour cast compensate luminescence unit；Each list that shines
Tuple includes the basic luminescence unit of at least three kinds sending different colours light；
Light guide plate, the light guide plate include at least one incident side, and the luminescence unit group and colour cast compensation shine
Unit is oppositely arranged with the incident side, and colour cast compensation luminescence unit is set to the edge of the incident side.
The another aspect of the embodiment of the present invention also provides a kind of display screen, and the display screen includes any embodiment of that present invention
The back light unit.
The another aspect of the embodiment of the present invention also provides a kind of display device, and the display device includes that the present invention is any real
Apply display screen described in example.
The embodiment of the invention provides a kind of back light unit, back light unit includes light source and light guide plate, and light source includes multiple
Luminescence unit group and at least one colour cast compensate luminescence unit, and each luminescence unit group includes at least three kinds sending different colours light
The basic luminescence unit of line, light guide plate include at least one incident side, luminescence unit group and colour cast compensation luminescence unit and enter light
Side is oppositely arranged, and colour cast compensation luminescence unit is set to the edge of light guide plate incident side, overcomes back light unit edge
Colour cast problem, improve image displaying quality.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of back light unit provided in an embodiment of the present invention；
Fig. 2 is the structural representation of the back light unit with a colour cast compensation luminescence unit provided in an embodiment of the present invention
Figure；
Fig. 3 is the structural representation of the back light unit with one group of colour cast compensation luminescence unit provided in an embodiment of the present invention
Figure；
Fig. 4 is the structure of backlight unit schematic diagram with white colour cast compensation luminescence unit provided in an embodiment of the present invention；
Fig. 5 is that the structure of the back light unit provided in an embodiment of the present invention with different row arrangement colour cast compensation luminescence unit is shown
It is intended to；
Fig. 6 is that the structure for the back light unit that non-edge setting colour cast provided in an embodiment of the present invention compensates luminescence unit is shown
It is intended to；
Fig. 7 is the knot for the back light unit that white colour cast compensation luminescence unit is arranged in non-edge provided in an embodiment of the present invention
Structure schematic diagram；
Fig. 8 is the back light unit that white colour cast compensation luminescence unit is arranged in another non-corner provided in an embodiment of the present invention
Structural schematic diagram；
Fig. 9 is a kind of structural schematic diagram of back light unit with backlight control unit provided in an embodiment of the present invention；
Figure 10 is a kind of structural schematic diagram of printed circuit board provided in an embodiment of the present invention；
Figure 11 is the light path schematic diagram that a kind of light provided in an embodiment of the present invention enters light guide plate；
Figure 12 is a kind of schematic diagram of light guide plate provided in an embodiment of the present invention；
Figure 13 is the schematic diagram of another light guide plate provided in an embodiment of the present invention；
Figure 14 is a kind of functional relationship figure of each module of backlight control unit provided in an embodiment of the present invention；
Figure 15 is a kind of schematic diagram of display screen provided in an embodiment of the present invention；
Figure 16 is a kind of schematic diagram of array of sub-pixels provided in an embodiment of the present invention；
Figure 17 is the schematic diagram of another array of sub-pixels provided in an embodiment of the present invention；
Figure 18 is a kind of functional relationship figure of the control unit of display screen provided in an embodiment of the present invention；
Figure 19 is a kind of schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of structural schematic diagram of back light unit provided in an embodiment of the present invention, and with reference to Fig. 1, back light unit includes:
Light source 11 and light guide plate 12.Wherein, light source 11 includes that multiple luminescence unit groups 110 and at least one colour cast compensate luminescence unit
120, each luminescence unit group 110 includes the basic luminescence unit 111 of at least three kinds sending different colours light.Light guide plate 12 wraps
Include at least one incident side.Luminescence unit 120 is opposite with the incident side of light guide plate 12 sets for luminescence unit group 110 and colour cast compensation
It sets, and colour cast compensation luminescence unit 120 is set to the edge of the incident side of light guide plate 12.It is mended intuitively to show colour cast in figure
Luminescence unit 120 is repaid, the present embodiment illustratively indicates that colour cast compensates luminescence unit 120 with diagonal line hatches background, with white back
Scape indicates basic luminescence unit 111.
It should be noted that basic luminescence unit 111 may include emitting red light unit R, green emitting unit G and blue
Luminescence unit B.Wherein, the arrangement mode of emitting red light unit R, green emitting unit G and blue-light-emitting unit B can there are many
Situation can be arranged in the way of RGBRGBRGB ... as shown in Figure 1, can also be by RBGRBGRBG ...,
The modes such as RRBGRRBGRRBG ... are arranged, the arrangement mode of each basic luminescence unit 111 depending on specific situation,
This is not particularly limited.In addition, the number of basic luminescence unit 111 is 3 in each luminescence unit group 110 in Fig. 1, at other
It can also be also not specifically limited herein to be multiple in embodiment.The present embodiment passes through the edge in 12 incident side of light guide plate
At least one colour cast compensation luminescence unit 120 is set, overcomes the colour cast problem of back light unit edge, improves image and show
Quality.
With reference to Fig. 1, the colour cast compensation luminescence unit 120 of the edge setting of 12 incident side of light guide plate can be with arest neighbors
The luminescent color of basic luminescence unit 111 is different.Specifically, two colour casts as shown in Figure 1 can be arranged in each edge
Luminescence unit 120 is compensated, i.e., edge setting is different from emitting red light unit R luminescent color on the left of 12 incident side of light guide plate
Green emitting unit G and blue-light-emitting unit B, edge setting is sent out with blue-light-emitting unit B on the right side of 12 incident side of light guide plate
The different emitting red light unit R of light color and green emitting unit G.
Further, it is also possible to which 1 luminous compensating unit 120 is arranged in each edge, Fig. 2 is provided in an embodiment of the present invention
The structural schematic diagram of back light unit with a colour cast compensation luminescence unit, with reference to Fig. 2, in the left side of 12 incident side of light guide plate
A blue-light-emitting unit B can be set in edge, and an emitting red light unit R, and light guide plate can be set in right side edge
The blue-light-emitting unit B of the left side edge of 12 incident sides is adjacent with a red basic luminescence unit, and color does not have to, guide-lighting
The emitting red light unit R of the right side edge of 12 incident side of plate is adjacent with a blue base luminescence unit, and the two color is also different.
Colour cast is set by the edge in 12 incident side of light guide plate and compensates luminescence unit 120, can be makes 12 corner areas of light guide plate
Colour mixture is complete, overcomes colour cast problem, improves image displaying quality.
Fig. 3 is the structural schematic diagram of the back light unit with one group of colour cast compensation luminescence unit provided in this embodiment, ginseng
Fig. 3 is examined, the colour cast compensation hair of at least three kinds sending different colours light can also be set in the edge of 12 incident side of light guide plate
Light unit 120, and the luminescent color quantity and luminescence unit group of the colour cast compensation luminescence unit 120 of the edge of the incident side
110 luminescent color quantity is identical.As shown in figure 3, colour cast compensation luminescence unit 120 includes emitting red light unit R, green emitting
Unit G and blue-light-emitting unit B, luminescent color quantity are identical as the luminescent color quantity of luminescence unit group 110.By in leaded light
12 incident side edge of plate is arranged colour cast identical with the luminescent color quantity of luminescence unit group 110 and compensates luminescence unit 120, makes
12 edge colour mixture of light guide plate is complete, overcomes colour cast problem, improves image displaying quality.
In addition, the luminescent color of colour cast compensation luminescence unit 120 can also be white.It is the present embodiment with reference to Fig. 4, Fig. 4
What is provided has the structure of backlight unit schematic diagram of white colour cast compensation luminescence unit, is respectively set in 11 left end of light source and right end
White luminous unit W compensates luminescence unit 120 as colour cast, keeps 12 edge colour mixture of light guide plate complete, overcomes colour cast problem,
Improve image displaying quality.
In above-described embodiment, in the plane parallel with 12 incident side of light guide plate, colour cast compensates luminescence unit 120 and shines
Unit group 110 is located at same a line.In the present embodiment, in the plane parallel with 12 incident side of light guide plate, colour cast compensation shines single
Member can be arranged with luminescence unit group 110 with different row.Fig. 5 is provided in an embodiment of the present invention with different row arrangement colour cast compensation hair
The structural schematic diagram of the back light unit of light unit, with reference to Fig. 5, it is white luminous unit W that colour cast, which compensates luminescence unit 120, with hair
Light unit group 110 is located in the plane parallel with incident side, and colour cast compensation luminescence unit 120 is located at incident side edge
The lower section of luminescence unit group 110 keeps edge colour mixture complete.Wherein, colour cast compensation luminescence unit 120 can also be above-mentioned implementation
The luminescence units such as R, B, RG, GB or RGB in example.
In above-described embodiment, colour cast compensation luminescence unit 120 is respectively positioned on the edge of 12 incident side of light guide plate, the present embodiment
In, colour cast compensation luminescence unit 120 may be located on the non-edge of incident side.
Fig. 6 is that the structure for the back light unit that non-edge setting colour cast provided in an embodiment of the present invention compensates luminescence unit is shown
It is intended to, with reference to Fig. 6, in the plane parallel with incident side, colour cast compensates luminescence unit 120 and the different row of luminescence unit group 110 is arranged
Column, and with the basic luminescence unit 111 for issuing different colours light in the luminescence unit group 110 of a line, and with a line
The colour cast of at least three kinds sending different colours light compensates luminescence unit 120 according to default regular repeated arrangement, and do not go together
Light color puts in order difference.Specifically, as shown in fig. 6, the first row of light source 11 is basic luminescence unit 111, wherein hair
Basic luminescence unit presses the sequential arrangement of RGBRGBRGB ..., the first row and the second behavior colour cast compensation hair in light unit group 110
Light unit 120, respectively according to GBRGBRGBR ... and the sequential arrangement of BRGBRGBRG ....Fig. 6 is merely exemplary to be given
The arrangement order of basic luminescence unit 111 and colour cast compensation luminescence unit 120, in other embodiments can also be with its other party
Formula arrangement, and be not specifically limited.The present embodiment compensates luminescence unit 120 by setting multirow colour cast, overcomes colour cast problem,
And keep backlight color more polynary, improve image displaying quality and contrast.
It should be noted that colour cast compensates luminescence unit 120 and luminescence unit group in the plane parallel with incident side
The sum of 110 arrangement line number is more than or equal to 2.Specific line number can be set according to the thickness of back light unit.
In addition, colour cast compensation luminescence unit 120 is when be luminescent color be white, colour cast compensation luminescence unit 120 can be with
Positioned at the non-edge of 12 incident side of light guide plate.Specifically, can be arranged in the two sides of part or all of luminescence unit group 110 inclined
Colorimetric compensation luminescence unit 120.Fig. 7 is the back that white colour cast compensation luminescence unit is arranged in non-edge provided in an embodiment of the present invention
The structural schematic diagram of light unit can be respectively provided with white luminous unit W conduct in each 110 two sides of luminescence unit group with reference to Fig. 7
Colour cast compensates luminescence unit 120.The problem of not only overcoming edge colour cast in this way, it is ensured that each luminescence unit group
110 equal colour mixtures are complete, improve image displaying quality.
Specifically, being arranged when colour cast compensation 120 luminescent color of luminescence unit is white with the different row of luminescence unit group 110
When, colour cast compensation luminescence unit 120 may be located on the non-edge of incident side.Fig. 8 is provided in an embodiment of the present invention another
The structural schematic diagram that the back light unit of white colour cast compensation luminescence unit is arranged in the non-corner of kind can be in non-edge with reference to Fig. 8
The one or more white luminous unit W of lower section setting of one or more groups of luminescence unit groups 110 shine list as colour cast compensation
Member 120.
It should be noted that merely exemplary in above-described embodiment there is the case where incident side to carry out light guide plate
Illustrate, in other embodiments, light guide plate there can also be multiple incident sides, can be in the manner described above in each incident side
Colour cast is set and compensates luminescence unit.
In the above-described embodiments, light guide plate 12 may include N number of predeterminable area, and the light that light source 11 is issued is each default
It is propagated in region in reducing-pitch thread, N is positive integer, and N >=1；Backlight control unit obtains picture number corresponding to N number of predeterminable area
It is believed that number, by the corresponding viewdata signal of each predeterminable area by the way that the coloration of each predeterminable area correspondence image and bright is calculated
Information is spent, and luminous single according to the coloration of each predeterminable area correspondence image and luminance information control luminescence unit group and colour cast compensation
Member provides light for each predeterminable area.Fig. 9 is a kind of back light unit with backlight control unit provided in an embodiment of the present invention
Structural schematic diagram, with reference to Fig. 9, light guide plate 12 include be divided into N number of predeterminable area, backlight control unit 130 passes through analytical calculation
It obtains the coloration and luminance information of each predeterminable area corresponding image, and show that control enters often according to coloration and luminance information
The pulsewidth modulation (PWM, Pulse Width Modulation) of each 111 emitted light of basic luminescence unit of one predeterminable area
Signal controls basic luminescence unit 111 according to the pwm signal and issues required light, because pwm signal is to each basic luminescence unit institute
It needs energy to be modulated, the energy reasonable distribution of light source 11 is such as worked as to reduce the overall power of back light unit
In coloration and luminance information corresponding to a certain predeterminable area, red component X1%, green component X2%, blue component is
, can be according to X1 when X3%, the ratio determination between X2, X3 is respectively supplied to emitting red light unit, green emitting unit and indigo plant
The current value of color luminescence unit, so as to avoid unnecessary energy loss.Especially when carrying out monochromatic display, only need to be
The corresponding basic luminescence unit 111 for providing shown color provides electric current, and provides each basic luminescence unit 111 of other colors
It can close, to greatly reduce the power consumption of back light unit.In addition, light is propagated in each predeterminable area in reducing-pitch thread,
While so that the energy of backlight further decreases, the contrast of display picture is improved.In addition, merely exemplary in Fig. 9
The corresponding partitioning scenario of light guide plate 12 when display panel is divided into N number of rectangular region being arranged side by side is illustrated, in other implementations
In mode, it is further divided into the region of N number of matrix arrangement, is not specifically limited herein.
Predeterminable area A1, A2 of light guide plate 12 ... in AN, each predeterminable area and several luminescence units 111 are opposite, figure
Basic luminescence unit 111 shown in 9 is only schematic example, basic luminescence unit 111 corresponding to each predeterminable area
Quantity is depending on the circumstances, is not particularly limited herein.
With continued reference to Fig. 9, it should be noted that the basic luminescence unit in the present embodiment, corresponding to same predeterminable area
It in 111, is one another in series between the basic luminescence unit 111 with same color, i.e. emitting red light unit is serially connected, green hair
Light unit is serially connected and blue-light-emitting unit is serially connected, and corresponds to the basic luminescence unit 111 of different predeterminable areas
Between it is mutually indepedent, so as to avoid interfering with each other between different predeterminable areas.
Further, the luminescence unit group 110 in the various embodiments described above and colour cast compensate adjacent two hair in luminescence unit 120
Spacing between light unit is 0.01mm-4mm, and researcher is obtained by test of many times when the spacing between two luminescence units is
When 0.01mm-4mm, after the light that luminescence unit corresponding to each predeterminable area is issued enters corresponding predeterminable area, light
It can be uniformly mixed, preferable display effect is provided.When spacing is greater than 4mm between two luminescence units, because between luminescence unit
Distance it is too big, and in the present embodiment, light is propagated in light guide plate in reducing-pitch thread, so that the light that each luminescence unit is issued exists
It can not uniformly be mixed in predeterminable area, so that luminescence unit can not be according to the coloration and brightness of predeterminable area corresponding image
Information provides required light for predeterminable area.In the present embodiment, further study show that, when the spacing between luminescence unit is
When 0.3mm-1.5mm, optimal admixture can be presented in the light of each luminescence unit in corresponding predeterminable area, to mention
For more preferably display effect.
It should be noted that the luminous list in some optional embodiments of the present embodiment, in the various embodiments described above
Tuple 110 and colour cast compensation luminescence unit 120 can be light-emitting diode chip for backlight unit, i.e., R, G, B luminescence unit shown in figure point
It Wei not red light emitting diodes chip, green LED chip and blue led chips.Wherein, optionally,
Each light-emitting diode chip for backlight unit is preferably dimensioned to be 100um-300um.Because the size of light-emitting diode chip for backlight unit is smaller, light guide plate 12
One predeterminable area can correspond to multiple light-emitting diode chip for backlight unit, so that the light into predeterminable area is evenly distributed, provide more
Accurate picture is added to show.
In some other optional embodiments of the present embodiment, luminescence unit group 110 and colour cast compensate luminescence unit
120 may be nano-wire LED unit, i.e. R, G, B luminescence unit is respectively red nano line light emitting diode list
Member, Preen nono line light emitting diode and blue nano-wire LED unit, wherein optional, nano wire hair
The size of optical diode unit is 5um-30um, and nano-wire LED unit is that the size being formed in substrate is nanoscale
Light emitting diode matrix, substrate can be silicon wafer or other materials, be not particularly limited herein.After being formed in substrate,
Nano-wire LED unit is transferred at light source again, as luminescence unit.Because of the ruler of nano-wire LED unit
It is very little minimum, a predeterminable area of light guide plate can be made to correspond to multiple nano-wire LED units as luminescence unit, thus
So that the light into predeterminable area is evenly distributed, more accurate picture is provided and is shown.
In some other optional embodiments of the present embodiment, luminescence unit group 110 and colour cast compensate luminescence unit
120 may be light emitting diode with quantum dots unit, i.e. R, G, B luminescence unit is respectively red quantum point luminescent diode list
Member, green light emitting diode with quantum dots unit and blue light emitting diode with quantum dots unit, because of light emitting diode with quantum dots list
The luminescent material of member is nanocrystal, so the size of light emitting diode with quantum dots unit can be Nano grade, so that guide-lighting
One predeterminable area of plate 12 can correspond to multiple light emitting diode with quantum dots units, so that the light into predeterminable area is distributed
Uniformly, more accurate picture is provided to show.
Further, in this embodiment back light unit further includes printed circuit board, it is of the invention real with reference to Figure 10, Figure 10
Apply a kind of structural schematic diagram of printed circuit board of example offer, wherein luminescence unit group 110 and colour cast compensate luminescence unit 120
It is integrated on printed circuit board 140, and overall package is carried out by encapsulating material 150.Encapsulating material 150 is transparent material, can
Think that the substratum transparent of the formation such as silica gel, silicone adhesive and epoxy resin, the present embodiment are not particularly limited this.Take package material
The refractive index of material 150 is n1, and the refractive index of light guide plate is n2, then -5%≤(n1-n2)/n2≤5%, i.e., encapsulating material 150 with
The refractive index of light guide plate 12 is equal or approximately equal.
Figure 11 is the light path schematic diagram that a kind of light provided in an embodiment of the present invention enters light guide plate, with reference to Figure 11, wherein
Arrow show the direction of propagation of light, when the refractive index n1 of the encapsulating material 150 and refractive index n2 of light guide plate 12 is equal or
When approximately equal, according to the calculation formula of refractive index, n1/n2=sin θ 2/sin θ 1, then 1 ≈ θ 2 of θ, i.e., light is by encapsulating material
After 150 enter light guide plate 12, significant change does not occur for the direction of propagation, so as to project light from luminescence unit, by envelope
When package material 150 enters light guide plate 12, interface between encapsulating material 150 and the light-entering surface of light guide plate 12 it is complete interior anti-
It penetrates and reduces or even eliminates, so that the light that luminescence unit is issued reduces light all or close to light guide plate 12 is fully entered
Loss.
It is a kind of schematic diagram of light guide plate provided in an embodiment of the present invention with reference to Figure 12, Figure 12, wherein light guide plate 12 includes
First incident side 121, and the second side 122 opposite with the first incident side.N number of the predeterminable area A1, A2 ... ... of light guide plate
AN extends to second side 122 by the first incident side 121, and the light that is issued of luminescence unit group by the first incident side 121 into
Enter N number of predeterminable area A1, A2 ... ... AN, arrow schematically shows the radiation direction into the first incident side 121 in figure.
In addition, light guide plate can also have the second incident side 123, it is provided in an embodiment of the present invention with reference to Figure 13, Figure 13
The schematic diagram of another light guide plate, wherein light guide plate 12 includes the first incident side 121, and opposite with the first incident side 121
Second incident side 123, N number of predeterminable area includes the first predeterminable area 101 and the second predeterminable area 102, by the first incident side 121
The one group of predeterminable area extended to inside light guide plate 12 is the first predeterminable area 101, extends to light guide plate by the second incident side 123
One group of predeterminable area inside 12 is the second predeterminable area 102, and the first predeterminable area 101 includes predeterminable area A1, A2 ... ...
Am, the second predeterminable area 102 include predeterminable area Am+1 ... ... AN, wherein m is positive integer, and 1≤m≤N.Luminescence unit group
With polarisation compensation luminescence unit issue light by the first incident side 121 enter each first predeterminable area 101, luminescence unit group and
Polarisation compensates the light that luminescence unit issues and enters each second predeterminable area 102 by the second incident side 123, and arrow is respectively in figure
Into the direction of the light of the first incident side 121 and the second incident side 123.Particularly, as shown in figure 13, each first predeterminable area
101 are extended to the middle part of light guide plate 12 by the first incident side 121, and each second predeterminable area 102 is extended to by the second incident side 123
The middle part at the middle part of light guide plate 12, light guide plate 12 is as shown in phantom in FIG..
Above structure makes the luminescence unit group and colour cast opposite with light guide plate the first incident side 121 compensate luminescence unit
First predeterminable area 101 provides light, and the luminescence unit group opposite with light guide plate the second incident side 123 and colour cast compensation shine single
Member be the second predeterminable area 102 light is provided, the light of each predeterminable area is evenly distributed, avoid light propagation distance it is too long and
The case where generating light losing, provides preferable display effect.
Further, with reference to Fig. 9, back light unit includes backlight control unit 130, and backlight control unit 130 includes image
Information receiving module, image information analysis module and luminescence unit control module.Above-mentioned each module realizes backlight control jointly
Control of the unit processed to the N number of predeterminable area of light guide plate, the function of each module and mutual connection relationship are as shown in figure 14.
Figure 14 is a kind of functional relationship figure of each module of backlight control unit provided in an embodiment of the present invention, wherein image information receives
Module receives the corresponding viewdata signal of each predeterminable area that back light unit is transferred to by the integrated circuit related with same in display screen.
Picture signal analyzes module for the corresponding viewdata signal of each predeterminable area by the way that figure corresponding to each predeterminable area is calculated
The coloration and luminance information of picture, wherein coloration and luminance information are red, green and the blue of each predeterminable area correspondence image
Etc. component and the luminance information of various colors shared by various colorss.Obtain the coloration and brightness of each predeterminable area correspondence image
After information, luminescence unit control module show that control enters the various luminescence units of each predeterminable area according to coloration and luminance information
The pwm signal of emitted light, and light needed for luminescence unit issues is controlled according to the pwm signal.As previously described, when a certain
In the coloration and luminance information of predeterminable area corresponding image, red component X1%, green component X2%, blue component is
When X3%, control emitting red light unit, green emitting unit and blue-light-emitting can be obtained according to X1, the ratio between X2, X3
The pwm signal of unit emitted light is supplied to emitting red light unit, green emitting unit and blue according to the pwm signal
The different current values of luminescence unit, so as to avoid unnecessary energy loss.
The another aspect of the embodiment of the present invention provides a kind of display screen, including the backlight list in above-mentioned any embodiment
Member.
It is a kind of schematic diagram of display screen provided in an embodiment of the present invention with reference to Figure 15, Figure 15, wherein display screen 100 wraps
Include the back light unit in above-mentioned any embodiment.In addition, display screen 100 further includes array of sub-pixels, array of sub-pixels includes
In the sub-pixel of array distribution, as shown in figure 16, Figure 16 is a kind of schematic diagram of array of sub-pixels provided in an embodiment of the present invention,
Wherein, sub-pixel 210 can be red sub-pixel R1, green sub-pixels G1 and tri- sub-pixel of blue subpixels B1, above-mentioned three
Sub-pixel interlocks repeated arrangement in array.
In addition, above-mentioned array of sub-pixels can also include white sub-pixels, as shown in figure 17, Figure 17 is the embodiment of the present invention
The schematic diagram of another array of sub-pixels of offer.Wherein, sub-pixel 210 can for red sub-pixel R1, green sub-pixels G1,
Tetra- sub-pixel of blue subpixels B1 and white sub-pixels W, above-mentioned four sub-pixel interlock repeated arrangement in array.At this point,
It is a kind of functional relationship figure of the control unit of display screen provided in an embodiment of the present invention with reference to Figure 18, Figure 18, wherein when above-mentioned
It further include white algo-rithms control unit, white algo-rithms in display screen in the array of sub-pixels of display screen when including white sub-pixels
Control unit is according to the corresponding viewdata signal of each predeterminable area by the way that the corresponding image chroma of each predeterminable area is calculated
White color component in information, and the pwm signal for controlling each luminescence unit emitted light is obtained according to white color component, and then control
Each luminescence unit provides light for each predeterminable area.
Further, as shown in figure 18, above-mentioned including tri- sub-pixel of R1, G1 and B1 and including R1, G1, B1 and W
It further include that gamma adjusts unit, gamma adjusts unit and adjusts the gamma that display screen shows image in the display screen of four sub-pixels
Curve eliminates the distortion phenomenon of image, provides accurate display image.
The another aspect of the embodiment of the present invention provides a kind of display device, including the display in above-mentioned any embodiment
Screen.
It is a kind of schematic diagram of display device provided in an embodiment of the present invention with reference to Figure 19, Figure 19, wherein display device
200 include display screen 100 described in above-mentioned any embodiment.
As can be seen from the above description, back light unit provided in an embodiment of the present invention, display screen and display device, by
Light guide plate incident side is arranged colour cast and compensates luminescence unit, overcomes due to the incomplete bring colour cast problem of light source both ends colour mixture,
Improve image displaying quality.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (8)
1. a kind of back light unit characterized by comprising
Light source, the light source include that multiple luminescence unit groups and at least one colour cast compensate luminescence unit；Each luminescence unit group
The basic luminescence unit of different colours light is issued including at least three kinds；
Light guide plate, the light guide plate include at least one incident side, and the luminescence unit group and the colour cast compensate luminescence unit
It is oppositely arranged with the incident side, and colour cast compensation luminescence unit is set to the edge of the incident side；
The luminescent color of the colour cast compensation luminescence unit is white, and the colour cast compensates luminescence unit and the luminescence unit
The different row of group arranges, and basic luminescence unit presses the sequential arrangement of red, green, blue in the luminescence unit group, and the colour cast compensation shines
The position of unit is corresponding with the green emitting unit in the basic luminescence unit；
The light guide plate includes N number of predeterminable area, and the light that the light source is issued is in reducing-pitch thread in each predeterminable area
It propagates, N is positive integer, and N >=1, and the spacing between luminescence unit in the luminescence unit group is 0.3mm-1.5mm, and same
One predeterminable area corresponds to multiple luminescence units, corresponding to having described in same color for the same predeterminable area
It is one another in series between luminescence unit；
The light guide plate includes the first incident side, and second incident side opposite with first incident side, described N number of default
Region includes the first predeterminable area and the second predeterminable area, and first predeterminable area is extended to described by first incident side
Inside light guide plate, second predeterminable area is extended to inside the light guide plate by second incident side, and the luminous list
Member and colour cast compensation luminescence unit light by first incident side enter first predeterminable area, the luminescence unit and
The light that colour cast compensates luminescence unit enters second predeterminable area by second incident side.
2. back light unit according to claim 1, which is characterized in that the colour cast compensation of the edge setting of the incident side
Luminescence unit is different from the luminescent color of the basic luminescence unit of arest neighbors.
3. back light unit according to claim 1, which is characterized in that colour cast compensation luminescence unit be also located at it is described enter
The non-edge of light side.
4. back light unit according to claim 1, which is characterized in that the back light unit includes backlight control unit, institute
It states backlight control unit and obtains viewdata signal corresponding to N number of predeterminable area, each predeterminable area is corresponding
Viewdata signal is by being calculated the coloration and luminance information of each predeterminable area correspondence image, and according to each described pre-
If it is each institute that the coloration and luminance information of region correspondence image, which control the luminescence unit group and colour cast compensation luminescence unit,
It states predeterminable area and light is provided.
5. back light unit according to claim 1, which is characterized in that the back light unit further includes printed circuit board, institute
It states luminescence unit group and colour cast compensation luminescence unit is integrated on the printed circuit board, and carried out by encapsulating material whole
Body encapsulation.
6. back light unit according to claim 4, which is characterized in that the backlight control unit includes:
Picture signal receiving module, described image signal receiving module receive the corresponding viewdata signal of the predeterminable area；
Picture signal analyzes module, and described image signal analysis module passes through the corresponding viewdata signal of the predeterminable area
The coloration and luminance information of the predeterminable area correspondence image is calculated；
Luminescence unit control module, the luminescence unit control module are the luminescence unit according to the coloration and luminance information
Group and colour cast compensation luminescence unit provide signal, so that the luminescence unit group and the colour cast is compensated luminescence unit described
Predeterminable area provides light.
7. a kind of display screen, which is characterized in that the display screen includes back light unit as claimed in any one of claims 1 to 6.
8. a kind of display device, which is characterized in that the display device includes display screen as claimed in claim 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200696.1A CN105629577B (en) | 2016-03-31 | 2016-03-31 | Back light unit, display screen and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200696.1A CN105629577B (en) | 2016-03-31 | 2016-03-31 | Back light unit, display screen and display device |
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| CN105629577A CN105629577A (en) | 2016-06-01 |
| CN105629577B true CN105629577B (en) | 2019-10-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2020112659A (en) * | 2019-01-10 | 2020-07-27 | 株式会社ジャパンディスプレイ | Liquid crystal display device |
| JP7374660B2 (en) * | 2019-08-23 | 2023-11-07 | 株式会社ジャパンディスプレイ | display device |
| CN113380171A (en) * | 2021-06-03 | 2021-09-10 | 成都天马微电子有限公司 | Color cast compensation method, display and vehicle-mounted display device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437056A (en) * | 2002-02-05 | 2003-08-20 | 三星电子株式会社 | Lighting device and display equipment utilizing the same lighting device |
| CN1828389A (en) * | 2005-02-28 | 2006-09-06 | 夏普株式会社 | Surface illuminator and liquid crystal display having the same |
| KR20060114545A (en) * | 2005-05-02 | 2006-11-07 | 럭스피아 주식회사 | Back light unit having multi-chip light emitting diode package and display system |
| KR100651551B1 (en) * | 2005-09-12 | 2006-11-29 | 삼성전기주식회사 | Led light source module incorporated with led light source(s) and a light guide plate |
| CN101097054A (en) * | 2006-06-30 | 2008-01-02 | 株式会社东芝 | Illuminating device and liquid crystal display |
| CN101313243A (en) * | 2005-11-24 | 2008-11-26 | Lg伊诺特有限公司 | Light emitting diode package and driving method thereof |
| JP2009026635A (en) * | 2007-07-20 | 2009-02-05 | Sharp Corp | Lighting system, and liquid crystal display device |
| CN101578480A (en) * | 2007-04-26 | 2009-11-11 | 夏普株式会社 | Light emitting element and liquid crystal display device |
| CN201439906U (en) * | 2009-06-18 | 2010-04-21 | 康佳集团股份有限公司 | Edge-lighting backlight module and liquid crystal display (LCD) |
| GB2472160A (en) * | 2007-10-23 | 2011-01-26 | Lg Display Co Ltd | Backlight assembly |
| CN201765416U (en) * | 2010-05-26 | 2011-03-16 | 福州华映视讯有限公司 | Backlight module and liquid crystal display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101400943B (en) * | 2006-05-26 | 2011-02-09 | 夏普株式会社 | Backlight device and display device using same |
| US20110116008A1 (en) * | 2008-07-11 | 2011-05-19 | Sharp Kabushiki Kaisha | Illumination device and liquid crystal display device |
-
2016
- 2016-03-31 CN CN201610200696.1A patent/CN105629577B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437056A (en) * | 2002-02-05 | 2003-08-20 | 三星电子株式会社 | Lighting device and display equipment utilizing the same lighting device |
| CN1828389A (en) * | 2005-02-28 | 2006-09-06 | 夏普株式会社 | Surface illuminator and liquid crystal display having the same |
| KR20060114545A (en) * | 2005-05-02 | 2006-11-07 | 럭스피아 주식회사 | Back light unit having multi-chip light emitting diode package and display system |
| KR100651551B1 (en) * | 2005-09-12 | 2006-11-29 | 삼성전기주식회사 | Led light source module incorporated with led light source(s) and a light guide plate |
| CN101313243A (en) * | 2005-11-24 | 2008-11-26 | Lg伊诺特有限公司 | Light emitting diode package and driving method thereof |
| CN101097054A (en) * | 2006-06-30 | 2008-01-02 | 株式会社东芝 | Illuminating device and liquid crystal display |
| CN101578480A (en) * | 2007-04-26 | 2009-11-11 | 夏普株式会社 | Light emitting element and liquid crystal display device |
| JP2009026635A (en) * | 2007-07-20 | 2009-02-05 | Sharp Corp | Lighting system, and liquid crystal display device |
| GB2472160A (en) * | 2007-10-23 | 2011-01-26 | Lg Display Co Ltd | Backlight assembly |
| CN201439906U (en) * | 2009-06-18 | 2010-04-21 | 康佳集团股份有限公司 | Edge-lighting backlight module and liquid crystal display (LCD) |
| CN201765416U (en) * | 2010-05-26 | 2011-03-16 | 福州华映视讯有限公司 | Backlight module and liquid crystal display device |
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| Publication number | Publication date |
|---|---|
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