CN201739957U - Light guide plate with V-shaped groove of LED backlight source - Google Patents
Light guide plate with V-shaped groove of LED backlight source Download PDFInfo
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- CN201739957U CN201739957U CN2009202740556U CN200920274055U CN201739957U CN 201739957 U CN201739957 U CN 201739957U CN 2009202740556 U CN2009202740556 U CN 2009202740556U CN 200920274055 U CN200920274055 U CN 200920274055U CN 201739957 U CN201739957 U CN 201739957U
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Abstract
The utility model discloses a light guide plate with a V-shaped groove. The light guide plate is applicable for sidelight light-emitting components of a large-size LED backlight source, and is basically characterized in that screen dots are formed at the bottom of the light guide plate; at least one V-shaped groove is formed at the top of the interior of the light guide plate, and parallel to the side of the light guide plate; a light bar corresponding to the V-shaped groove is arranged below the bottom surface of the light guide plate; the lights given off by the light bar enter the light guide plate from the bottom thereof and fall on the side of the V-shaped groove; and due to full internal reflection, the direction of spreading of the main components of the lights is changed, the light spreads along the direction nearly parallel to the light outlet surface of the light guide plate in the light guide plate, and the screen dots enable the light falling on the dots to be reflected towards the top (light outlet surface) of the light guide plate. In addition, the light guide plate can have diffusion function through doping light scattering particles in the light guide plate.
Description
Technical field
The utility model discloses the LGP that has the V-type groove in a kind of LED-backlit source, is more suitable for belonging to technical field of liquid crystal display in the light-emitting component in large-sized LED-backlit source
Background technology
LED has been widely used in the backlight arrangement of liquid crystal display, and the commercialization form in LED-backlit source mainly contains two kinds, and the one, the side-light type in LED-backlit source (edge backlight) light-emitting component, one of critical component of side-lighting type light-emitting element is a LGP; The one, the straight-down negative in LED-backlit source (direct backlight) light-emitting component.One of major defect of the side-lighting type light-emitting element in LED-backlit source is that difficulty is applicable to large-sized backlight.
Therefore, need a kind of improved LGP of using for the side-lighting type light-emitting element, be applicable to the light-emitting component in large-sized LED-backlit source.
The utility model content
The utility model proposes the LGP that has the V-type groove in a kind of LED-backlit source, essential characteristic is as follows, at least one V-type groove is formed on the top of the inside of LGP, and this V-type groove parallels with the side of LGP, forms site (dot pattern) on the bottom of LGP; It is corresponding with the V-type groove that the LED encapsulation is set, LED encapsulation issued light enters LGP by the bottom, be mapped on the side of V-type groove, because reflectance coating on the side of total internal reflection or V-type groove or the reflecting object in the V-type groove, changed the direction of propagation of the main component of light, make the direction propagation almost parallel with the light output surface of LGP of its edge in LGP, the site is reflected the light that is mapped on it to the top of LGP (light output surface).In addition, by the light diffusing particles of in LGP, mixing, can be so that LGP has the function of diffusion simultaneously.
Wherein,
(A) shape of the side in the cross section of V-type groove is to select from one group of shape, and this group shape comprises: (a) straight line (203z among Fig. 2 a); (b) curve (203q among Fig. 2 b); (c) broken line (203t among Fig. 2 c).The shape of the side in the cross section of V-type groove can be other shapes (not showing in the drawings), the main component of the light at directive top is in the side of the inside of LGP guiding LGP as long as the side of V-type groove can enter the bottom from LGP, promptly, the side of V-type groove has changed the direction of propagation of the main component of light, makes the direction propagation almost parallel with the light output surface of LGP of its edge in LGP.
(B) distribution of V-type groove is to select from a component cloth, and this component cloth includes, but are not limited to: the wall scroll V-type groove that (1) parallels with the lamp bar of side-lighting type light-emitting element; (2) many V-type grooves parallel to each other and that parallel with the lamp bar of side-lighting type light-emitting element; (3) V-type groove mutually perpendicular and that parallel with the lamp bar of side-lighting type light-emitting element respectively; (4) be separated at least two sub-V-type grooves; (5) distribute (4) respectively with the combination of distribute (1), distribute (2), distribute (3).
(C) width of the bottom surface of V-type groove is more than or equal to the maximum dimension of the light output surface of LED encapsulation.
(D) setting in the V-type groove is to select from one group is provided with, and the setting of this group comprises: non-filler in (1) V-type groove; (2) form one deck reflectance coating on the V-type groove side; (3) reflecting object identical shaped with the V-type groove is set in the V-type groove, the top of this reflecting object is equal substantially with the top of LGP; (4) reflecting object identical shaped with the V-type groove is set in the V-type groove, the top of this reflecting object is lower than the top of LGP, at the refraction coefficient close material of the top of reflecting object filling with LGP, the top of this material is equal substantially with the top of LGP.
(E) setting of LGP is to select from one group is provided with, and the setting of this group comprises:: the LGP that (1) is transparent; (2) the inside doping light diffusing particles (light-scattering particle) of LGP; (3) top coating one deck light diffusing particles (diffusion particle) of LGP; (4) the inside doping light diffusing particles of LGP and top coating one deck light diffusing particles.
The width of the bottom surface of any one V-type groove among the distribution of any one V-type groove among the shape of the side in the cross section of any one V-type groove in above-mentioned (A), above-mentioned (B), above-mentioned (C); An embodiment of the LGP that has the V-type groove that promptly constitutes LED-backlit of the present utility model source is combined in the setting of any one LGP among setting in above-mentioned (D) in any one V-type groove, above-mentioned (E).
The difference setting of LGP has determined LGP to have two types, when LGP adopts being provided with of (E) (1), only has light-guiding function.LGP adopts (E) (2), (E) (3) and (E) during being provided with of (4), also has diffusion function (or being referred to as: diffusion type LGP, scattering-type light-guide plate) simultaneously.
The purpose of this utility model and every effect that can reach are as follows:
(1) LGP that has the V-type groove in the LED-backlit source that provides of the utility model keeps the advantage of the side-lighting type light-emitting element in LED-backlit source, that is, and and slimming and adopt less LED encapsulation.
(2) LGP that has the V-type groove in LED-backlit of the present utility model source is applicable to large-sized backlight,, even for the large scale backlight, also can provide sufficient brightness and excellent luminance uniformity that is.
(3) LGP that has the V-type groove in the LED-backlit source that provides of the utility model can use the lower led chip of brightness.
(4) LGP that has the V-type groove in the LED-backlit source that provides of the utility model, being evenly distributed of light.
(5) LGP that has the V-type groove in the LED-backlit source that provides of the utility model is easy to produce in batches.
The utility model and its feature and benefit will better be showed in the following detailed description.
Description of drawings
Fig. 1 shows the schematic diagram of several embodiment of the LGP that has the V-type groove.
Fig. 2 shows the sectional view of several embodiment of the LGP that has the V-type groove in LED-backlit of the present utility model source.
Fig. 3 shows the side-lighting type light-emitting element in LED-backlit source formerly.
Fig. 4 shows the several embodiment of light-emitting component of the LGP that has the V-type groove that adopts LED-backlit of the present utility model source.
Specific embodiment
Though embodiment of the present utility model will be described below, following description just illustrates principle of the present utility model, rather than limitation the utility model is in the description of following embodiment.
Attention: following all embodiment of the LGP that has the V-type groove that are applicable to LED-backlit of the present utility model source:
(1) ratio of each several part is not represented the true ratio of the each several part of embodiment among each figure.
(2) light-emitting component that has a LGP of V-type groove constitutes the LED-backlit source.
(3) do not draw among Fig. 4 miscellaneous part of light-emitting component in LED-backlit source, miscellaneous part comprises, light-collecting piece, polaroid, reflector plate, framework, etc.In order to simplify picture, among several embodiment of the LGP in Fig. 1, Fig. 2, Fig. 4, all do not draw the site.
(4) form the V-type groove at the top of the inside of LGP, the side of V-type groove the bottom from LGP is entered and the main component of the light at directive top in the side of the inside of LGP guiding LGP, promptly, incident light is after the bottom enters LGP, penetrate on the side of V-type groove, under its effect, the main component of light is in the direction propagation almost parallel with the light output surface of LGP of the edge, inside of LGP.
(5) height of V-type groove is less than the thickness of LGP.
(6) (for example, for circular light output surface, its maximum dimension is its diameter to the width of the bottom surface of V-type groove more than or equal to the maximum dimension of the light output surface of LED encapsulation; For the rectangle light output surface, its maximum dimension is its diagonal).
(7) shape of the side in the cross section of V-type groove is to select from one group of shape, and this group shape includes, but are not limited to: (a) straight line (203z among Fig. 2 a); (b) curve (203q among Fig. 2 b); (c) broken line (203t among Fig. 2 c).The side of V-type groove can enter the bottom from LGP and the main component of the light at directive top becomes the light of the side of directive LGP at the inner transformation of LGP, promptly, make the main component of incident light enter after the LGP, the side of V-type groove has changed the direction of propagation of the main component of light, makes the direction propagation almost parallel with the light output surface of LGP of its edge in LGP.
(8) setting in the V-type groove is to select from one group is provided with, and the setting of this group comprises: non-filler in (1) V-type groove; (2) form one deck reflectance coating on the V-type groove side; (3) reflecting object identical shaped with the V-type groove is set in the V-type groove, the top of this reflecting object is equal substantially with the top of LGP; (4) reflecting object identical shaped with the V-type groove is set in the V-type groove, the top of this reflecting object is lower than the top of LGP, fill the close material of refraction coefficient with LGP above the top of reflecting object, the top of this material is equal substantially with the top of LGP.Avoid above reflecting object, forming the dark space.
(9) distribution of V-type groove in LGP is to select from a component cloth, and this component cloth includes, but are not limited to: the wall scroll V-type groove that (1) parallels with the side of LGP; (2) many V-type grooves parallel to each other and that parallel with the side of LGP; (3) V-type groove mutually perpendicular and that parallel with the not ipsilateral of LGP respectively; (4) be separated into two-part at least V-type groove; (5) distribute (4) respectively with the combination of distribute (1), distribute (2), distribute (3).
(10) setting of LGP is to select from one group is provided with, and the setting of this group comprises:: (1) transparent light guide plate; (2) the inside doping light diffusing particles of LGP; (3) top coating one deck light diffusing particles of LGP; (4) the inside doping light diffusing particles of LGP and top coating one deck light diffusing particles.
(11) the difference setting of LGP has determined LGP to have two types, when LGP adopts being provided with of (10) (1), only has light-guiding function.When LGP adopts being provided with of (10) (2), (10) (3) and (10) (4), also has diffusion function (also can be referred to as: diffusion type LGP, to show difference) simultaneously.
(12) light is subjected to scattering and reflex simultaneously when the internal communication of diffusion type LGP, and penetrates from the top of LGP.
(13) cooperate the LED encapsulation of adopting, the height of the V-type groove of selection LGP and the width of bottom surface make the side of V-type groove change the direction of propagation of the main component of light, make the direction propagation almost parallel with the light output surface of LGP of its edge in LGP,, make that the bright dipping of LGP is even.
(14) the suitable light scattering that LGP (diffusion type LGP) is set is than (optical diffusionratio), light transmission (total optical transmission), the setting of V-type groove and the shape and the density of distribution and site, to reach the brightness uniformity of emergent light.For example, the light scattering ratio may be selected between 5% to 90%, and light transmission may be selected between 40% to 95%.For example, for the PMMA material, when the doping light diffusing particles, make the light scattering ratio be about at 45% o'clock, its light transmission is about 80%.
(15) setting of the suitable V-type groove that LGP (non-diffusion type LGP) is set and the shape and the density of distribution and site are to reach the brightness uniformity of emergent light.
(16) material of LGP is to select from one group of material, this group material comprises, polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), MS (styrenemethacrylate), MMA (methacrylacidmethyl), cycloolefine polymer (COP), cyclenes copolymer COC etc.
(17) have the good heat dissipation effect of the LGP of V-type groove.
(18) the LED encapsulation of adopting is to select from one group of encapsulation, and this group encapsulation comprises: comprise the encapsulation of LED surface-emitting type, have the LED surface-emitting type encapsulation of coarse surface, the LED that has lens encapsulates.A LED encapsulation can be adopted the chip of at least one bill coloured light.Monochromatic chip comprises ruddiness, blue light, green glow chip.The LED encapsulation emits white light.
(19) light output surface that is fixed on the LED encapsulation on the circuit board can touch the bottom of LGP, therefore, the thickness that adopts LGP and LED to encapsulate the light-emitting component in the LED-backlit source of forming is the thickness that the thickness of LGP adds the LED encapsulation, need not between LGP and LED encapsulation, to keep very large space, kept slimming.
Fig. 1 shows the schematic diagram of 5 embodiment of the LGP that has the V-type groove in LED-backlit of the present utility model source.Fig. 1 a shows the schematic diagram of an embodiment of the LGP that has the V-type groove.V-type groove 102 is formed on the top in the inside of LGP 101.Corresponding with V-type groove 102, below the bottom of LGP 101, lamp bar (led light source) is set, the lamp bar of below, bottom comprises, circuit board 110 and LED encapsulation 108 fixed thereon.The V-type groove parallels with two sides 109 of LGP.
For the LGP of non-filler in the V-type groove, the LED encapsulation 108 a part of light that send 126 directly penetrate LGP 101 and upwards propagate.The major part 125 of LED encapsulation 108 light that send is turned to the almost parallel direction of the edge and the light output surface of LGP 101 to propagate in LGP 101 by the side total internal reflection of V-type groove 102.The major part 125 of light adopts the thick arrow of dotted line to represent, because it is to propagate in LGP 101.
Fig. 1 b shows the schematic diagram of an embodiment of the LGP that has the V-type groove.Form two V-type groove 102a parallel to each other and 102b at the top of the inside of LGP 101.With two lamp bars of the below of the corresponding bottom that is arranged on LGP 101 of V- type groove 102a and 102b, comprise circuit board 110a and 110b respectively and be separately fixed at LED encapsulation 108a and 108b on it.Two V-type grooves parallel with two sides 109 of LGP.
Fig. 1 c shows the schematic diagram of an embodiment of the LGP that has the V-type groove.Mutually perpendicular two V- type groove 102a and 102b are formed on the top in the inside of LGP 101.V-type groove 102a parallels with two side 109a of LGP, and V-type groove 102b parallels with two side 109b of LGP.
Fig. 1 d shows the schematic diagram of an embodiment of the LGP that has the V-type groove.V-type groove 102 is formed on the top in the inside of LGP 101, it is characterized in that the end face 102a of V-type groove 102 promptly, has the part 101b of LGP still in the inside of LGP 101 between the end face 102a of V-type groove 102 and the side 109a of LGP 101.Its advantage is, the such intensity that can strengthen LGP that is provided with.V-type groove 102 parallels with the side 109b of LGP 101.
Notice that the V-type groove in the LGP all can be arranged as the mode of Fig. 1 d.
Fig. 1 e shows the schematic diagram of an embodiment of the LGP that has the V-type groove.The V-type groove is formed on the top in the inside of LGP 101, it is characterized in that, this V-type groove comprises setting at least two sub-V- type groove 102a and 102b point-blank.Sub-V- type groove 102a and 102b are separated by LGP.Its advantage is, the such intensity that can strengthen LGP that is provided with.Below the bottom of LGP 101 with sub-V-type groove 102a and the corresponding position of 102b, the lamp bar is set, and this lamp bar comprises circuit board 110 and LED encapsulation 108a and 108b fixed thereon, wherein, 108a is corresponding to sub-V-type groove 102a in the LED encapsulation, and 108b is corresponding to sub-V-type groove 102b in the LED encapsulation.
Notice that the V-type groove in the LGP among (1) all embodiment all can be arranged as the mode of Fig. 1 e, that is, whole piece V-type groove is separated at least two sub-V-type grooves; (2) among Fig. 1 e, a have LED corresponding with each sub-V-type groove encapsulates.
The embodiment of the LGP that has the V-type groove that Fig. 1 a, Fig. 1 b, Fig. 1 d and Fig. 1 e show is specially adapted to the side-light type back light (shown in Fig. 4 a) that two lamp bars are separately positioned on the both sides parallel with the V-type groove of LGP.The embodiment of the LGP that has the V-type groove that Fig. 1 c shows is specially adapted to the side-light type back light (shown in Fig. 4 c) that four lamp bars are separately positioned on four sides of LGP.
Fig. 2 shows the sectional view of some embodiment of the LGP that has the V-type groove in LED-backlit of the present utility model source.The V-type groove is formed on the top in the inside of LGP.
The embodiment of the side in the different cross section of Fig. 2 a to Fig. 2 c displaying V-type groove 202.
Fig. 2 a shows the sectional view of an embodiment of LGP, it is characterized in that, forms V-type groove 202z at the top of the inside of LGP 201.LGP 201 has top 206 and bottom 205.The side 203z in the cross section of V-type groove 202z is a straight line.The height of V-type groove 202z is the distance of its summit 202d to the top 206 of LGP 201.
An embodiment, (for circular exiting surface, its full-size be the diameter of circle to the width L of V-type groove 202z more than or equal to the full-size of the exiting surface of LED encapsulation.For the rectangle exiting surface, its full-size is diagonal).
Fig. 2 b shows the sectional view of an embodiment of LGP, it is characterized in that, forms V-type groove 202q at the top of the inside of LGP 201, and the side 203q in the cross section of V-type groove 202q is a curve.
Fig. 2 c shows the sectional view of an embodiment of LGP, it is characterized in that, forms V-type groove 202t at the top of the inside of LGP 201, and the side 203t in the cross section of V-type groove 202t is a broken line.
Fig. 2 d to Fig. 2 f shows the embodiment that the difference of V-type groove 202 is provided with.
Fig. 2 d shows the sectional view of an embodiment of the setting of LGP, it is characterized in that, is formed on the side of V-type groove 202 at top of LGP 201 inside and applies a reflectance coating 207.
The sectional view of an embodiment of the setting of Fig. 2 e displaying LGP, it is characterized in that, be formed in the V-type groove at top of LGP 201 inside a reflecting object 220 identical shaped with the V-type groove is set, the top 220a of this reflecting object is equal substantially with the top 206 of LGP.
The sectional view of an embodiment of the setting of Fig. 2 f displaying LGP, it is characterized in that, be formed in the V-type groove at top of LGP 201 inside a reflecting object 230 identical shaped with the V-type groove is set, its top is lower than the top of LGP, at the over top filling of reflecting object 230 and the close inserts 240 of refraction coefficient of LGP 201, the top 240a of inserts 240 is equal substantially with the top 206 of LGP.Therefore, can avoid the dark space of reflecting object 230 tops.
The embodiment of Fig. 2 g and the different settings of Fig. 2 h displaying LGP.
Fig. 2 g shows an embodiment of the setting of LGP 201.Except that the side of V-type groove 202, top coating one deck scattering particles 201a of LGP 201.
Fig. 2 h shows an embodiment of the setting of LGP 201.The inside doping light diffusing particles of LGP 201b.
The sectional view of an embodiment of the side-lighting type light-emitting element in Fig. 3 displaying LED-backlit source formerly.The side-lighting type light-emitting element in LED-backlit source comprises, LGP 301 and stripe shape lamp plate.Wherein, the stripe shape lamp plate is arranged on the both sides of LGP 301, comprise stripe shape circuit board 310 and at least one LED encapsulation 308 fixed thereon, site 304 is formed on the bottom 305 of LGP 301, and light sends and propagates in LGP from the surface 306 of LGP 301.One of its major defect is that difficulty is applied to large-sized LED-backlit source.Its advantage is the slimming of the side-lighting type light-emitting element in LED-backlit source, and adopts less LED encapsulation, makes cost lower.
Fig. 4 shows 2 embodiment of the LGP that has the V-type groove in LED-backlit of the present utility model source.Have on the bottom surface of LGP of V-type groove and have the site, but, among several embodiment of the LGP in Fig. 1, Fig. 2, Fig. 4, all do not draw the site in order to simplify picture.
Fig. 4 a and Fig. 4 b show the top view and the sectional view of an embodiment of the LGP that has the V-type groove in LED-backlit of the present utility model source respectively.At least one V-type groove 402 is formed on the top in the inside of LGP 401.The V-type groove 402 that Fig. 4 a shows and LGP 401 relative two sides 409 parallel, and wherein, the lamp bar that is arranged on 409 next doors, two sides of LGP 401 comprises that circuit board 410a and LED fixed thereon encapsulate 408a.Comprise circuit board 410b and LED encapsulation 408b fixed thereon with the lamp bar of the below of the corresponding bottom that is arranged on LGP 401 of V-type groove 402.The sectional view of the embodiment of Fig. 4 b exploded view 4a.LED encapsulation 408b is arranged on the below with the bottom surface 405 of V-type groove 402 corresponding LGPs 401.After the major part 425 of the light that sends from LED encapsulation 408b enters LGP 401, changed its direction of propagation by V-type groove 402, along propagating with the side of the almost parallel direction-guidance tabula rasa 401 of the light output surface of LGP, form a side-light type light source, make that the LGP that has the V-type groove can the size backlight at the LGP middle part.The major part 425 of the light that the led light source of bottom sends adopts dotted line to represent that it is to propagate in LGP 401.
In addition, the thickness of LED encapsulation is limited, and therefore, the thickness that has the LGP of V-type groove is the thickness that the thickness of side-lighting type light-emitting element formerly adds the led light source of upper bottom portion.An embodiment, at present, the thickness of a LED surface launching encapsulation reaches 0.7 millimeter, and circuit board thickness is 1 millimeter, and therefore, the thickness that has the LGP of V-type groove only increases by 1.7 millimeters than the thickness of formerly side-lighting type light-emitting element.
Fig. 4 c shows the top view of an embodiment of the LGP that has the V-type groove in LED-backlit of the present utility model source.2 mutually perpendicular V- type groove 402a and 402b are formed on the top in the inside of LGP 401.V-type groove 402a parallels with the two sides 409a of LGP 401, and V-type groove 402b and LGP 401 other two sides 409b parallel.V- type groove 402a and 402b are divided into 4 unit to LGP 401.With the below of the corresponding bottom that is arranged on LGP 401 of V-type groove 402a be two lamp bars, comprise circuit board 410c and circuit board 410d and be separately fixed at LED encapsulation 408c and LED encapsulation 408d on it.With the below of the corresponding bottom that is arranged on LGP 201 of V-type groove 402b be 1 lamp bar, comprise circuit board 410b and LED encapsulation 408b fixed thereon.The major part 425 that is arranged on the light that the lamp bar of the bottom of LGP 401 sends adopts dotted lines to represent that it is to propagate in LGP 401.
In when assembling, can make the light output surface of the LED encapsulation on the lamp bar of below of bottom of LGP 401 be close to the bottom of LGP, make the light-emitting component in LED-backlit source reach: to realize slimming, adopt less LED encapsulation, cost to reduce.
Top concrete description does not limit scope of the present utility model, and only provides some specific illustrations of the present utility model.Therefore covering scope of the present utility model should be determined by claim and their legal equivalents, rather than by above-mentioned specific detailed description and embodiment decision.
Claims (7)
1. the LGP that has the V-type groove in a LED-backlit source comprises, a LGP; It is characterized in that the top of the inside of described LGP has at least one V-type groove; The bottom surface of described LGP has the site.
2. the LGP that has the V-type groove in the LED-backlit source of claim 1, it is characterized in that, the material of described LGP is to select from one group of material, and this group material comprises, polymethyl methacrylate, polycarbonate, polystyrene, cycloolefine polymer, cyclenes copolymer.
3. the LGP that has the V-type groove in the LED-backlit source of claim 1 is characterized in that, the setting of described LGP is to select from one group is provided with, and the setting of this group comprises the LGP that (1) is transparent; (2) the inside doping light diffusing particles of described LGP; (3) top coating one deck light diffusing particles of described LGP; (4) the inside doping light diffusing particles of described LGP and top coating one deck light diffusing particles.
4. the LGP that has the V-type groove in the LED-backlit source of claim 1 is characterized in that, the shape of the side in the cross section of described V-type groove is to select from one group of shape, and this group shape comprises: (a) straight line; (b) curve; (c) broken line.
5. the LGP that has the V-type groove in the LED-backlit source of claim 1 is characterized in that, the height of described V-type groove is less than the thickness of described LGP.
6. the LGP that has the V-type groove in the LED-backlit source of claim 1 is characterized in that, the setting in the described V-type groove is to select from one group is provided with, and the setting of this group comprises: non-filler in (1) described V-type groove; (2) form one deck reflectance coating on the side of described V-type groove; (3) be provided with in the described V-type groove one with the identical shaped reflecting object of described V-type groove, the top of described reflecting object is equal substantially with the top of described LGP; (4) be provided with in the described V-type groove one with the identical shaped reflecting object of described V-type groove, the top of described reflecting object is lower than the top of described LGP, fills the close material of refraction coefficient with described LGP above the top of described reflecting object.
7. the LGP that has the V-type groove in the LED-backlit source of claim 1, it is characterized in that, the distribution of described V-type groove in described LGP is to select from a component cloth, and this component cloth comprises, the wall scroll V-type groove that (1) parallels with the side of described LGP; (2) many V-type grooves parallel to each other and that parallel with the side of described LGP; (3) V-type groove mutually perpendicular and that parallel with the not ipsilateral of described LGP respectively; (4) be separated into two-part at least V-type groove; (5) distribute (4) respectively with the combination of distribute (1), distribute (2), distribute (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202740556U CN201739957U (en) | 2009-11-26 | 2009-11-26 | Light guide plate with V-shaped groove of LED backlight source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202740556U CN201739957U (en) | 2009-11-26 | 2009-11-26 | Light guide plate with V-shaped groove of LED backlight source |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104501029A (en) * | 2014-11-19 | 2015-04-08 | 青岛歌尔声学科技有限公司 | LED backlight module, method of eliminating bright strips and bright spots for LED backlight module, and liquid crystal display |
| CN104820258A (en) * | 2015-04-24 | 2015-08-05 | 深圳市汇晨电子有限公司 | Integrated light guide plate having light diffusion function |
| CN106016188A (en) * | 2016-06-20 | 2016-10-12 | 保定威控光电科技有限公司 | LED light source |
| CN110828645A (en) * | 2018-08-10 | 2020-02-21 | 青岛海信电器股份有限公司 | Light-emitting element, backlight module and display device |
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2009
- 2009-11-26 CN CN2009202740556U patent/CN201739957U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501029A (en) * | 2014-11-19 | 2015-04-08 | 青岛歌尔声学科技有限公司 | LED backlight module, method of eliminating bright strips and bright spots for LED backlight module, and liquid crystal display |
| CN104501029B (en) * | 2014-11-19 | 2017-09-29 | 青岛歌尔声学科技有限公司 | LED backlight module and eliminate the method for its bright band lamp bead, liquid crystal display |
| CN104820258A (en) * | 2015-04-24 | 2015-08-05 | 深圳市汇晨电子有限公司 | Integrated light guide plate having light diffusion function |
| CN104820258B (en) * | 2015-04-24 | 2016-01-20 | 深圳市汇晨电子有限公司 | A kind of integrated guide tabula rasa with light diffusion function |
| CN106016188A (en) * | 2016-06-20 | 2016-10-12 | 保定威控光电科技有限公司 | LED light source |
| CN110828645A (en) * | 2018-08-10 | 2020-02-21 | 青岛海信电器股份有限公司 | Light-emitting element, backlight module and display device |
| CN110828645B (en) * | 2018-08-10 | 2021-11-23 | 海信视像科技股份有限公司 | Light-emitting element, backlight module and display device |
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