CN101975356B - Side light type LED backlight source and display device - Google Patents
Side light type LED backlight source and display device Download PDFInfo
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- CN101975356B CN101975356B CN 201010289476 CN201010289476A CN101975356B CN 101975356 B CN101975356 B CN 101975356B CN 201010289476 CN201010289476 CN 201010289476 CN 201010289476 A CN201010289476 A CN 201010289476A CN 101975356 B CN101975356 B CN 101975356B
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Abstract
The invention discloses a side light type LED backlight source and a display device, wherein the side light type LED backlight source is characterized in that a plurality of LED beads are respectively arranged on only three side edges of the peripheral side edges of a display screen. The invention enables the light incident mode of the side light type LED backlight source to be more reasonable, and improves the brightness quality effect of the display screen. The side light type LED backlight source is beneficial to the cost saving under the condition of ensuring the display quality of the display screen and simultaneously improving the brightness uniformity of the LED backlight source.
Description
Technical field
The present invention relates to field of television, in particular to a kind of side light type LED backlight source, display device.
Background technology
Side light type LED backlight source comprises backlight cavities, the front of backlight cavities is the optics module, the back side is fixed head, a plurality of LED particles are installed on fixed head, it is the LED lamp, the LED-backlit source to be configured in the edge of LCD screen in actual design, the light guide plate of arranging in pairs or groups again, light guide plate is positioned at the display screen back side, when the module in LED-backlit source is luminous, be transported to the middle section of screen from the light transmission light guide plate of display screen edge-emission, whole so just have enough amount of backlight, can allow LCD screen display frame.Adopt the benefit of side light type LED backlight source to have two, the first can be used the LED particle light source of lesser amt, save cost, it two can make more frivolous fuselage exactly, allow the rear of LED TV liquid crystal panel not need to configure the LED-backlit source module, but be placed on side, can reduce the thickness of screen integral body.
LCD Panel comprises four edges--two long limits and two minor faces, present traditional side light type LED backlight source, according to the difference that its LED light emitting source position is set, can be divided into following several: four sides light inlet, two long limit light inlets, two minor face light inlets and single long limit light inlet, under the prerequisite that the size that the LED particle is the LED lamp is determined, the number of the monolateral maximum LED light source particle that can arrange is certain, and the sum of LED the number that therefore above several arrangement modes can be arranged successively decreases successively.
Which kind of LED-backlit light inlet mode the technician takes, and determinative has: LED granule number and back light source structure.In general the LED granule number is directly proportional to back light source brightness.Therefore under the prerequisite that back light source brightness is determined, LED number also just determined.If a LED used number between four sides light inlet mode and two minor face light inlet modes, in order both to ensure light efficiency preferably, is saved again cost simultaneously, reduced technology difficulty, generally can select two long limit light inlet modes.And limited by backlight thickness demand and configuration aspects, a certain long limit does not have enough spatial arrangement LED-backlit sources in some cases, therefore can affect the brightness of backlight, and then can affect the display quality of display screen.
In the various light inlet modes of side light type LED backlight source, the LED uniform particles is arranged, the position LED particle that in backlight cavities, the LED particle forms on each side LED-backlit chamber connects each other is comparatively concentrated, thereby the side light type LED backlight source of brightness irregularities can appear, because light guide plate enters the light path complexity, as side light type LED backlight source being converted to a uniform area source of brightness, design has brought larger difficulty to light guide plate mesh point.
Affect the problem of brightness of display screen quality for the light inlet mode of the side light type LED backlight source on display screen four limits in above-mentioned prior art, not yet propose at present effective solution.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of side light type LED backlight source, display device, affects the problem of brightness of display screen quality in the light inlet mode that solves the side light type LED backlight source on display screen four limits in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of side light type LED backlight source.
Side light type LED backlight source according to the present invention comprises: the side along display screen arranges a plurality of LED particles, only is respectively arranged with a plurality of LED particles on wherein three sides on the surrounding side of display screen.
Further, display screen comprises the first minor face, second minor face relative with the first minor face, the first long limit, the second long limit relative with the first long limit, wherein, be provided with the first backlight cavities on the first minor face, be provided with the second backlight cavities on the second minor face, be provided with the 3rd backlight cavities on the first long limit, include a plurality of LED particles in each backlight cavities.
Further, the first long limit is positioned at the lower end of display screen.
Further, the first minor face is identical with the length of the first backlight cavities, the second minor face is identical with the length of the second backlight cavities, the first long limit is identical with the length of the 3rd backlight cavities, perhaps, the length of the first minor face is greater than the length of the first backlight cavities, and the length of the second minor face is greater than the length of the second backlight cavities, and the first long limit is identical with the length of the 3rd backlight cavities.
Further, the length of the 3rd backlight cavities is 2 times of the first backlight cavities length, and the length of the 3rd backlight cavities is 2 times of the second backlight cavities length.
Further, in the first backlight cavities and/or a plurality of LED particles of arranging in the second backlight cavities carry out non-equidistant arrangement according to the predetermined rule of arranging, the equidistant sequence of a plurality of LED particles in the 3rd backlight cavities, wherein, in the first backlight cavities and/or a plurality of LED particles of arranging in the second backlight cavities, along increasing gradually towards the distance between the LED particle on the direction of the 3rd backlight cavities.
Further, the predetermined rule of arranging is determined by following formula: f (x)=lnax
b, wherein, x is in the first backlight cavities or the number of the interior LED particle of the second backlight cavities, and f (x) is the distance between x LEDs particle and the 3rd backlight cavities, and a is the length of the first backlight cavities or the second backlight cavities, and b is constant.
Further, a plurality of LED particles of arranging in the 3rd backlight cavities carry out non-equidistant arrangement according to the predetermined rule of arranging, the equidistant sequence of a plurality of LED particles in the first backlight cavities and/or the second backlight cavities, wherein, a plurality of LED particles in the 3rd backlight cavities increase towards the distance between the LED particle on the direction of the first backlight cavities and/or the second backlight cavities gradually on the edge.
Further, the predetermined rule of arranging is determined by following formula: f (x)=lnax
b, wherein, x is the number of LED particle in the 3rd backlight cavities, and f (x) is the distance between x LEDs particle and the first backlight cavities or the second backlight cavities, and a is the length of the 3rd backlight cavities, and b is constant.
To achieve these goals, according to a further aspect in the invention, provide a kind of display device.
Display device according to the present invention comprises: all technical characterictics and the technical scheme of above-mentioned side light type LED backlight source.
To achieve these goals, in accordance with a further aspect of the present invention, provide a kind of televisor.Televisor according to the present invention comprises: all technical characterictics and the technical scheme of above-mentioned side light type LED backlight source.
By the present invention, only adopt on the surrounding side of display screen on three sides wherein and be respectively arranged with a plurality of LED particles, the light inlet mode of the side light type LED backlight source on display screen four limits in the prior art of having solved affects the problem of display screen display quality, and then the light inlet mode that has reached side light type LED backlight source is more reasonable, improves the effect of the brightness quality of display screen.Side light type LED backlight source of the present invention is in the situation that guarantee that the brightness quality of display screen farthest provides cost savings, and has improved the uniformity coefficient of LED-backlit source brightness simultaneously.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the side light type LED backlight source of the embodiment of the present invention;
Fig. 2 is the structural representation of side light type LED backlight source according to the preferred embodiment of the invention;
Fig. 3 is the structural representation of side light type LED backlight source according to the preferred embodiment of the invention;
Fig. 4 is the structural representation of side light type LED backlight source according to the preferred embodiment of the invention;
Fig. 5 is the structural representation of arranging according to LED particle gradual change on the side light type LED backlight source minor face of the embodiment of the present invention;
Fig. 6 is the structural representation of arranging according to LED particle gradual change on the long limit, photometry formula LED-backlit source of the embodiment of the present invention.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Side light type LED backlight source of the present invention comprises along the side of display screen a plurality of LED particles is set, and only is respectively arranged with a plurality of described LED particles on wherein three sides on the surrounding side of described display screen 1.This embodiment is by selecting any three sides according to the demand of brightness of display screen, the LED particle to be set in four sides of display screen 1, this side light type LED backlight source design can be called U-shaped light inlet mode, the side light type LED backlight source of this U-shaped light inlet mode has namely satisfied the brightness quality of display screen, effectively control simultaneously the number that uses the LED particle, provide cost savings.
Fig. 1 is the structural representation according to the side light type LED backlight source of the embodiment of the present invention.As shown in Figure 1, this display screen 1 comprises the first minor face, second minor face relative with the first minor face, the first long limit, the second long limit relative with the first long limit, wherein, be provided with the first backlight cavities 31 on the first minor face, be provided with on the second minor face on the second backlight cavities 32, the first long limit and be provided with the 3rd backlight cavities 2, include a plurality of LED particles in each backlight cavities.The present embodiment is in the situation that backlight thickness demand and display screen structure restriction, enough spatial arrangement LED particles are provided, guaranteed the quality of brightness of display screen, relatively four limit light inlets or the two long limit light inlet mode embodiment of the present invention have been saved the LED granule number, have been reduced cost simultaneously, more monolateral light inlet or two minor face light inlet modes satisfied the LED particle the demand of arranging, improved the quality of brightness of display screen.
Preferably, the first long limit of the embodiment of the present invention is positioned at the lower end of display screen 1, and namely the 3rd backlight cavities 2 is arranged on the lower end of display screen 1.In design process due to existing display screen 1; the electronic component of relevant display screen 1 inside is arranged on the upper end of display screen 1 usually; can affect the performance of electronic component due to the LED particle that emits light and heat; be arranged on an end away from above-mentioned electronic component therefore will include the 3rd backlight cavities 2 of a plurality of LED particles, namely this moment the 3rd backlight cavities 2 be arranged on one side of display screen 1 lower end.This embodiment has solved the problem due to the serviceable life of the electronic component of LED particle light-emitting warming-up effect display screen 1, thereby has improved user's experience the serviceable life of having improved display screen.For example, if be provided with source plate etc. in the nearlyer side of distance glass plate, be provided with the driving chip on this source plate, the multiple electronic devices and components such as control chip, if at this long side, LED particle lamp is set, LED particle lamp long-term fever can impact life-span or the serviceability of the various electronic devices and components on glass plate and source plate.Therefore the preferred embodiment of the present invention is arranged on the LED particle on another long limit away from the source plate, and this light inlet mode has realized extending the serviceable life of glass plate side electron device, and then the serviceable life of also having improved display screen.
In embodiment as shown in Figure 1, the first minor face of this display screen 1 is identical with the length of the first backlight cavities 31, and the second minor face is identical with the length of the second backlight cavities 32, and the first long limit is identical with the length of the 3rd backlight cavities 2.This embodiment has namely satisfied the demand that in the backlight cavities of display screen 1, the LED particle is arranged, be not subjected to again simultaneously the restriction of long limit structure, the maximum that is set to this display screen 1 due to the length of the backlight cavities on minor face can arrange scope, therefore the LED particle that can arrange more has satisfied the brightness demand of display screen.
Fig. 2 is the structural representation of side light type LED backlight source according to the preferred embodiment of the invention; Fig. 3 is the structural representation of side light type LED backlight source according to the preferred embodiment of the invention; Fig. 4 is the structural representation of side light type LED backlight source according to the preferred embodiment of the invention.
As shown in Fig. 2,3,4, the length of the first minor face of this display screen 1 is greater than the length of the first backlight cavities 31, and the length of the second minor face is greater than the length of the second backlight cavities 32, and the first long limit is identical with the length of the 3rd backlight cavities 2.The place of leaving vacancy on the first minor face and the second minor face does not arrange backlight cavities, it is the display screen in comparison diagram 1, backlight cavities on any minor face of the display screen shown in Fig. 2,3,4 has been clipped a part, blank position part without backlight cavities can compensate with light guide plate or other optical designs, remainder is provided with backlight cavities, and the LED particle in backlight cavities sorts according to pre-defined rule.This embodiment namely satisfies in the situation of brightness of display screen quality satisfying the LED particle demand of arranging, and reduces the length of backlight cavities on minor face, and this design has been saved material, has also reduced the technology difficulty of making LED display simultaneously.
As shown in Fig. 2,3,4, preferred, in the embodiment of the present invention, the length of the 3rd backlight cavities 2 can be 2 times of the first backlight cavities 31 length, and the length of the 3rd backlight cavities 2 can be also 2 times of the second backlight cavities 32 length.It is identical with half length of backlight cavities on long limit that this length with the backlight cavities on two minor faces is arranged to, unified the manufacturer's standard of backlight cavities in the situation that guarantee light efficiency, because the kind number in the making backlight cavities is relatively few, can greatly reduce the difficulty of production operation and control craft precision, improve staff's efficient.
In above-described embodiment, the first backlight cavities 31 can be positioned at the optional position of the first minor face scope, and the second backlight cavities 32 can be positioned at the optional position of the second minor face scope.Concrete can comprise following three kinds of embodiments.
As shown in Figure 2, the first backlight cavities 31 and the second backlight cavities 32 lay respectively at the upper end of the first minor face and the second minor face, namely away from the position of the 3rd backlight cavities.Wherein, the length that is positioned at the first backlight cavities 31 of minor face upper end and the second backlight cavities 32 is all respectively half of the 3rd backlight cavities length, and this embodiment method can be convenient to the reduction of production operation and technology difficulty in conjunction with the arranging rule of LED particle in backlight cavities.
As shown in Figure 3, the first backlight cavities 31 and the second backlight cavities 32 are separately positioned on the position near the 3rd backlight cavities, be positioned at the first minor face and the second minor face part on the lower, wherein, the length that is positioned at the first backlight cavities 31 of minor face upper end and the second backlight cavities 32 is all respectively half of the 3rd backlight cavities length, this embodiment method can be convenient to the reduction of production operation and technology difficulty in conjunction with the arranging rule of LED particle in backlight cavities.
As shown in Figure 4, the first backlight cavities 31 and the second backlight cavities 32 lay respectively at the middle part of the first minor face and the second minor face, namely be arranged on the rational position of distance the 3rd backlight cavities, wherein, the length that is positioned at the first backlight cavities 31 of minor face upper end and the second backlight cavities 32 is all respectively half of the 3rd backlight cavities length.This embodiment method can be convenient to the reduction of production operation and technology difficulty in conjunction with the arranging rule of LED particle in backlight cavities.
The display screen 1 of backlight cavities is set on two minor faces of the present invention and a long limit, and the side view LED particle mainly utilizes light guide plate that the light transmission light guide plate of screen edge emission is transported to the zone of center Screen, thereby forms an area source.for U-shaped light inlet mode of the present invention, in general a plurality of LED particles on each backlight cavities can evenly be arranged, the LED particle of this duration limit backlight cavities and minor face backlight cavities junction is comparatively concentrated, and the minor face other end, namely less away from LED number of long limit backlight cavities one end, because light guide plate enters the light path complexity, the present invention preferably adopts the predetermined rule of arranging that a plurality of LED particles in each backlight cavities are arranged, the light that this design can be transmitted in the LED particle on light guide plate is converted to a uniform area source of brightness, reduced the difficulty of light guide plate mesh point design.
Fig. 5 is the structural representation of arranging according to LED particle gradual change on the side light type LED backlight source minor face of the embodiment of the present invention.As shown in Figure 5, the present invention is according to the distribution of light characteristics in U-shaped light inlet mode, the mode that a plurality of LED particles 4 in backlight cavities on minor face are carried out non-homogeneous arrangement, namely in the first backlight cavities 31 on display screen 1 and/or a plurality of LED particles 4 of arranging in the second backlight cavities 32 carry out non-equidistant arrangement according to the predetermined rule of arranging, a plurality of LED particles 4 in the 3rd backlight cavities 2 can equidistantly sort.
In this embodiment in the first backlight cavities 31 and/or a plurality of LED particles 4 of arranging in the second backlight cavities 32 along increasing gradually towards the distance between a plurality of LED particles 4 on the direction of the 3rd backlight cavities 2.This way of example makes a plurality of LED particles 4 nearer ends in distance limit in backlight cavities on minor face, LED particle 4 interval of arranging is larger, and for a distance limit end far away, the interval of arranging of LED particle 4 is less, thereby makes the light of the backlight cavities on minor face and the light of the backlight cavities on long limit form mutual compensation.This arrangement mode has improved the homogeneity of minor face light inlet greatly.
The present invention is through strict test, the rule of light attenuation when propagating in light guide plate according to light, realize non-homogeneous arrangement according to the predetermined rule of arranging in above-mentioned the first backlight cavities 31 and/or between each LED particle 4 in the second backlight cavities 32, this predetermined rule of arranging is determined by following formula: f (x)=lnax
bWherein, x can be in the first backlight cavities 31 or the number of the second interior LED particle of backlight cavities 32, x=1,2,3......, f (x) is the distance between x LEDs particle and the 3rd backlight cavities 2, a is the length of the first backlight cavities 31 or the second backlight cavities 32, and b is constant, and is relevant with the luminous intensity of single LEDs particle.In the embodiment of the present invention, the value of constant b is relevant to the screen size size, and the constant b value of different size size is different, and the b value of same size is identical and fixing.
The backlight cavities of more traditional LED particle of evenly arranging, the arrangement mode of LED particle of the present invention can take full advantage of the light transmition characteristic, improve brightness uniformity in three limit types (" U " type) light inlet mode, greatly reduce the design difficulty of light guide plate on display screen, the design difficulty of light guide plate is the compensation to inhomogeneous light inlet, after adopting this arrangement mode, the homogeneity of display screen minor face light inlet can improve a lot.
Fig. 6 is the structural representation of arranging according to LED particle gradual change on the long limit, photometry formula LED-backlit source of the embodiment of the present invention.the set-up mode of leaded light onboard led particle of the present invention also comprises with next way of example, as shown in Figure 6, in the situation that guarantee display screen 1 brightness quality, be that LED granule number in each backlight cavities satisfies the desired demand of arranging of brightness of display screen, a plurality of LED particles of arranging in the 3rd backlight cavities 2 of display screen 1 carry out non-equidistant arrangement according to the predetermined rule of arranging, the equidistant arrangement of a plurality of LED particles in the first backlight cavities 31 and/or the second backlight cavities 32, simultaneously, a plurality of LED particles in the 3rd backlight cavities 2, can increase gradually towards the distance between the LED particle on the direction of the first backlight cavities 31 and/or the second backlight cavities 32 on the edge.On a long limit and two minor faces, a backlight cavities is set respectively due to display screen of the present invention, carry out the LED particle of non-isometric arrangement mode comparison on two minor faces and carry out non-isometric arrangement mode therefore will grow LED particle on the limit in the present embodiment, also have production operation and control simpler advantage in the situation that have same advantage.
preferably, LED particle on the 3rd backlight cavities 2 can be distinguished left along the center line of the 3rd backlight cavities 2 in the above-described embodiments, right both direction is arranged, increase gradually in the distance between the LED particle on direction to the left or to the right, this distance obtains by predetermined arranging rule, be that the LED particle is less than the number of center section near the part of the first backlight cavities 31 and/or the second backlight cavities 32, this moment is in order to guarantee the brightness quality of display screen, the equidistant arrangement of a plurality of LED particles in the first backlight cavities 31 and/or the second backlight cavities 32, satisfied on display screen the LED particle demand of arranging.
In addition; LED particle on the 3rd backlight cavities 2 can also be distinguished left or right direction arrangement along an end of the 3rd backlight cavities 2; increase gradually in the distance between the LED particle on direction to the left or to the right; this distance obtains by predetermined arranging rule; same; in order to guarantee the brightness quality of display screen, the LED particle demand of arranging has been satisfied on display screen in the equidistant arrangement of a plurality of LED particles in the first backlight cavities 31 and/or the second backlight cavities 32.
Distance between the interior involved LED particle of above-mentioned the 3rd backlight cavities 2 of the present invention is set according to the predetermined rule of arranging, and this predetermined rule of arranging is determined by following formula: f (x)=lnax
b, wherein, x is the number of the 3rd interior LED particle 4 of backlight cavities 2, and f (x) is the distance between x LEDs particle and the first backlight cavities 31 or the second backlight cavities 32, and a is the length of the 3rd backlight cavities 2, and b is constant, and is relevant with the luminous intensity of single LEDs particle.In the embodiment of the present invention, the value screen size of constant b size is relevant, and the constant b value of different size size is different, and the b value of same size is identical and fixing.
As shown in Figure 5 can be take 37 cun as example, long limit is 90 LEDs particles approximately, and side is 40 LEDs particles approximately, 40 non-homogeneous arrangements of side.The ordering rule of LED particle meets above-mentioned formula.
In each embodiment of the present invention, in order to satisfy the LED particle demand of arranging, guarantee the brightness quality of display screen, the deviser adopts when the LED particle in the first backlight cavities 31 and/or the second backlight cavities 32 is arranged according to the predetermined rule of arranging, equidistant the arranging of LED particle in the 3rd backlight cavities 2; When the LED particle in the 3rd backlight cavities 2 is arranged according to the predetermined rule of arranging, equidistant the arranging of LED particle in the first backlight cavities 31 and the second backlight cavities 32.Two schemes makes the light of the backlight cavities on minor face and the light of the backlight cavities on long limit form mutual compensation, and two kinds of arrangement modes have all improved the homogeneity of minor face light inlet greatly.Preferred in addition, the length of the first backlight cavities 31 and/or the second backlight cavities 32 can be half of the 3rd backlight cavities 2 length, as a kind of unified production standard, has improved the production efficiency of product, has reduced cost.
The present invention's the first backlight cavities 31 and the position of the second backlight cavities 32 on minor face, with and on the production that can be optimized according to the embodiment of Fig. 1 to Fig. 4 of LED granule number.
The present invention can provide a kind of display screen, has above-mentioned Fig. 1 to side light type LED backlight source shown in Figure 6.The brightness display quality of this display screen is higher.
The present invention can also provide a kind of televisor, has above-mentioned Fig. 1 to side light type LED backlight source and display screen thereof shown in Figure 6.The user of this televisor experiences better.
The present invention also provides a kind of display device, and this display device can be a kind of display screen, can be also a kind of televisor.But be not limited to this.
From above embodiment describes, can find out, the present invention has realized following technique effect: the source design of this LED-backlit is the side light type LED backlight source of U-shaped light inlet mode, has namely satisfied the brightness quality of display screen, effectively control simultaneously the number that uses the LED particle, provide cost savings.In the situation that backlight thickness demand and display screen structure restriction, the invention provides enough spatial arrangement LED-backlit sources, guaranteed the quality of brightness of display screen, relatively four limit light inlets or the two long limit light inlet mode embodiment of the present invention have been saved the LED granule number, have been reduced cost simultaneously, more monolateral light inlet or two minor face light inlet modes satisfied the LED particle the demand of arranging, improved the quality of brightness of display screen.
Simultaneously, the LED particle in the present invention on the LED-backlit source is arranged according to pre-defined rule, makes the light of the backlight cavities on minor face and the light of the backlight cavities on long limit form mutual compensation.This arrangement mode has improved the homogeneity of display screen light inlet greatly.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. side light type LED backlight source, comprise along the side of display screen a plurality of LED particles are set, it is characterized in that: only be respectively arranged with a plurality of described LED particles on wherein three sides on the surrounding side of described display screen, described display screen comprises the first minor face, second minor face relative with described the first minor face, the first long limit, the second long limit relative with the described first long limit, wherein, be provided with the first backlight cavities on described the first minor face, be provided with the second backlight cavities on described the second minor face, be provided with the 3rd backlight cavities on the described first long limit, include a plurality of described LED particles in each described backlight cavities, and in described the first backlight cavities and/or a plurality of described LED particle of arranging in described the second backlight cavities carry out non-equidistant arrangement according to the predetermined rule of arranging, the described predetermined rule of arranging is determined by following formula:
F (x)=lnax
bWherein, x is in described the first backlight cavities or the number of the interior described LED particle of described the second backlight cavities, and f (x) is the distance between x LEDs particle and described the 3rd backlight cavities, a is the length of described the first backlight cavities or described the second backlight cavities, and b is constant.
2. side light type LED backlight source according to claim 1, is characterized in that, the described first long limit is positioned at the lower end of described display screen.
3. side light type LED backlight source according to claim 1 and 2, is characterized in that,
Described the first minor face is identical with the length of described the first backlight cavities, and described the second minor face is identical with the length of described the second backlight cavities, and the described first long limit is identical with the length of described the 3rd backlight cavities, perhaps,
The length of described the first minor face is greater than the length of described the first backlight cavities, and the length of described the second minor face is greater than the length of described the second backlight cavities, and the described first long limit is identical with the length of described the 3rd backlight cavities.
4. side light type LED backlight source according to claim 3, is characterized in that, the length of described the 3rd backlight cavities is 2 times of described the first backlight cavities length, and the length of described the 3rd backlight cavities is 2 times of described the second backlight cavities length.
5. side light type LED backlight source according to claim 1 and 2, it is characterized in that, a plurality of described LED particle of arranging in the situation that in described the first backlight cavities and/or in described the second backlight cavities carries out non-equidistant arrangement according to the predetermined rule of arranging, the equidistant sequence of a plurality of described LED particle in described the 3rd backlight cavities, wherein, in described the first backlight cavities and/or a plurality of described LED particle of arranging in described the second backlight cavities, increasing gradually along the distance between the above LED particle of direction of described the 3rd backlight cavities.
6. side light type LED backlight source, comprise along the side of display screen a plurality of LED particles are set, it is characterized in that: only be respectively arranged with a plurality of described LED particles on wherein three sides on the surrounding side of described display screen, described display screen comprises the first minor face, second minor face relative with described the first minor face, the first long limit, the second long limit relative with the described first long limit, wherein, be provided with the first backlight cavities on described the first minor face, be provided with the second backlight cavities on described the second minor face, be provided with the 3rd backlight cavities on the described first long limit, include a plurality of described LED particles in each described backlight cavities, and a plurality of described LED particle of arranging in described the 3rd backlight cavities carries out non-equidistant arrangement according to the predetermined rule of arranging, the described predetermined rule of arranging is determined by following formula:
F (x)=lnax
b, wherein, x is the number of described LED particle in described the 3rd backlight cavities, and f (x) is the distance between x LEDs particle and described the first backlight cavities or described the second backlight cavities, and a is the length of described the 3rd backlight cavities, and b is constant.
7. side light type LED backlight source according to claim 6, is characterized in that, the described first long limit is positioned at the lower end of described display screen.
8. according to claim 6 or 7 described side light type LED backlight sources, it is characterized in that, in the situation that a plurality of described LED particle of arranging in described the 3rd backlight cavities carries out non-equidistant arrangement according to the predetermined rule of arranging, the equidistant sequence of a plurality of described LED particle in described the first backlight cavities and/or described the second backlight cavities, wherein, a plurality of described LED particle in described the 3rd backlight cavities is increasing gradually along the distance between the above LED particle of direction of described the first backlight cavities and/or described the second backlight cavities.
9. a display device, is characterized in that, comprising: the described side light type LED backlight source of any one in claim 1-8.
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| CN 201010289476 CN101975356B (en) | 2010-09-21 | 2010-09-21 | Side light type LED backlight source and display device |
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|---|---|---|---|---|
| TWI413748B (en) * | 2011-06-15 | 2013-11-01 | Lextar Electronics Corp | Led lighting device |
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| CN101975356A (en) | 2011-02-16 |
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