CN204201589U - Light source, backlight module and display unit - Google Patents
Light source, backlight module and display unit Download PDFInfo
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- CN204201589U CN204201589U CN201420746320.7U CN201420746320U CN204201589U CN 204201589 U CN204201589 U CN 204201589U CN 201420746320 U CN201420746320 U CN 201420746320U CN 204201589 U CN204201589 U CN 204201589U
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Abstract
Embodiment of the present utility model discloses a kind of light source, backlight module and display unit.This light source comprises: light-emitting diode chip for backlight unit; And the phosphor powder layer to be oppositely arranged with light-emitting diode chip for backlight unit, described phosphor powder layer receives the first light that described light-emitting diode chip for backlight unit sends, and launch second light different from the wavelength of the first light, wherein said light-emitting diode chip for backlight unit and described phosphor powder layer can move relative to each other, and the fluorescent material amount of the phosphor powder layer that the light that described light-emitting diode chip for backlight unit is sent excites increases or reduces.Adopt technique scheme, such as, light-emitting diode chip for backlight unit and phosphor powder layer can relative movements, can regulate backlight colour temperature easily thus.
Description
Technical field
Embodiment of the present utility model relates to a kind of light source, backlight module and display unit.
Background technology
In the backlight module of traditional liquid crystal display unit, generally comprise white LED lamp bar and light guide plate.White light LEDs comprises blue LED die and yellow fluorescence bisque, and phosphor powder layer and LED chip are packaged together.If need like this to change backlight colour temperature, whole LED lamp bar must be changed.
Utility model content
The object of embodiment of the present utility model is to provide a kind of light source, backlight module and display unit, by the relative movement of light-emitting diode chip for backlight unit and phosphor powder layer, can regulate backlight colour temperature easily thus.
According to embodiment of the present utility model, provide a kind of light source, this light source comprises: light-emitting diode chip for backlight unit; And the phosphor powder layer to be oppositely arranged with light-emitting diode chip for backlight unit, described phosphor powder layer receives the first light that described light-emitting diode chip for backlight unit sends, and launch second light different from the wavelength of the first light, wherein said light-emitting diode chip for backlight unit and described phosphor powder layer can move relative to each other, and the fluorescent material amount of the phosphor powder layer that the light that described light-emitting diode chip for backlight unit is sent excites increases or reduces.
Adopt technique scheme, such as, light-emitting diode chip for backlight unit and phosphor powder layer can relative movements, can regulate backlight colour temperature easily thus.
According to embodiment of the present utility model, described light-emitting diode chip for backlight unit and described phosphor powder layer can relative movements on approaching and distancing direction.
Adopt technique scheme, such as, simple mode can be adopted to regulate light-emitting diode chip for backlight unit and phosphor powder layer can relative position, and substantially do not change the structure of traditional backlight module.
According to embodiment of the present utility model, described phosphor powder layer has recess towards the side of described light-emitting diode chip for backlight unit, described light-emitting diode chip for backlight unit is arranged in this recess, and described light-emitting diode chip for backlight unit and described phosphor powder layer can relative movements on the direction of the direction of described light-emitting diode chip for backlight unit close to the bottom of recess and the bottom away from recess.
Adopt technique scheme, such as, by arranging recess, light-emitting diode chip for backlight unit has just had certain activity space, can realize the adjustment of backlight colour temperature thus when substantially not increasing space shared by light-emitting diode chip for backlight unit and phosphor powder layer.
According to embodiment of the present utility model, described light source also comprises: carrier, multiple described light-emitting diode chip for backlight unit is arranged on carrier at predetermined intervals, described phosphor powder layer has multiple recess towards the side of described light-emitting diode chip for backlight unit, multiple described light-emitting diode chip for backlight unit lays respectively in multiple recess, and described light-emitting diode chip for backlight unit can move up in the direction of the bottom close to recess with away from the side of the bottom of recess.
Adopt technique scheme, such as, by arranging recess, light-emitting diode chip for backlight unit has just had certain activity space, and multiple described light-emitting diode chip for backlight unit can move together with the carrier of such as printed circuit board (PCB) simultaneously, can substantially not increase space shared by light-emitting diode chip for backlight unit and phosphor powder layer and utilize simple mechanism to realize the adjustment of backlight colour temperature when substantially not changing traditional backlight module structure thus.
According to embodiment of the present utility model, described light source also comprises: carrier, described carrier has multiple projection arranged at predetermined intervals towards the side of described phosphor powder layer, multiple described light-emitting diode chip for backlight unit is separately positioned in multiple projections of carrier at predetermined intervals, described phosphor powder layer has multiple recess towards the side of described light-emitting diode chip for backlight unit, multiple described light-emitting diode chip for backlight unit lays respectively in multiple recess, and described light-emitting diode chip for backlight unit can move up in the direction of the bottom towards recess with away from the side of the bottom of recess.
Adopt technique scheme, such as, by arranging recess, light-emitting diode chip for backlight unit has just had certain activity space, and multiple described light-emitting diode chip for backlight unit can move together with the carrier of such as printed circuit board (PCB) simultaneously, make described light-emitting diode chip for backlight unit be arranged in multiple projections of carrier simultaneously, darker recess can be set thus, thus can substantially not increase space shared by light-emitting diode chip for backlight unit and phosphor powder layer and utilize when substantially not changing traditional backlight module structure simple mechanism to realize the adjustment of backlight colour temperature in a big way.
According to embodiment of the present utility model, described phosphor powder layer is fixedly installed.
Adopt technique scheme, such as, phosphor powder layer can be fixed on light guide plate, and only light-emitting diode chip for backlight unit can move, and thereby simplify the mechanism realizing described light-emitting diode chip for backlight unit and described phosphor powder layer relative movement.
According to embodiment of the present utility model, described phosphor powder layer has elongated shape, and described carrier has streaky shape.
Adopt technique scheme, such as, the carrier of such as printed circuit board (PCB) can be adopted, can reduce costs thus.
According to embodiment of the present utility model, described multiple recess is arranged in a row on the longitudinal direction of phosphor powder layer, and light-emitting diode chip for backlight unit is arranged in a row on the longitudinal direction of described carrier.
Adopting technique scheme, such as, when substantially not changing traditional backlight module structure, the relative movement of phosphor powder layer and light-emitting diode chip for backlight unit can be realized.
According to embodiment of the present utility model, described phosphor powder layer has elongated shape, described carrier has streaky shape, described multiple recess is arranged in a row on the longitudinal direction of phosphor powder layer, and multiple light-emitting diode chip for backlight unit and multiple projection are arranged in a row on the longitudinal direction of described carrier.
Adopt technique scheme, such as, described light-emitting diode chip for backlight unit is arranged in multiple projections of carrier, darker recess can be set thus, and because multiple recess, multiple light-emitting diode chip for backlight unit and multiple bump array are in a row, thus can simple mechanism be utilized to realize the adjustment of backlight colour temperature in a big way when substantially not changing traditional backlight module structure and not increasing space shared by light-emitting diode chip for backlight unit and phosphor powder layer.
According to embodiment of the present utility model, the side towards light-emitting diode chip for backlight unit of described phosphor powder layer has saw-tooth like shape.
Adopt technique scheme, such as, realize multiple recess by the phosphor powder layer of saw-tooth like shape, make the manufacture craft of phosphor powder layer simple and be easy to realize.
According to embodiment of the present utility model, the side away from light-emitting diode chip for backlight unit of described phosphor powder layer is configured to be attached on the incidence surface of light guide plate.
Adopt technique scheme, such as, the light that more light source can be made to send enters the incidence surface of light guide plate, makes the mounting structure of phosphor powder layer simple.
According to embodiment of the present utility model, described light-emitting diode chip for backlight unit and described phosphor powder layer can relative movements in a predetermined direction, and the thickness at least at the position relative with light-emitting diode chip for backlight unit of described phosphor powder layer increases along described predetermined direction or reduces.
Adopt technique scheme, such as, the structure of simple phosphor powder layer can be used to realize the adjustment of backlight colour temperature.
According to embodiment of the present utility model, described phosphor powder layer has elongated shape, and described predetermined direction is longitudinal vertical with described phosphor powder layer, and described phosphor powder layer is at least wedge-type shape at the position relative with light-emitting diode chip for backlight unit.
Adopt technique scheme, such as, phosphor powder layer structure is simple, is easy to realize.
According to embodiment of the present utility model, described phosphor powder layer comprises the first phosphor powder layer and the second phosphor powder layer, when watching in the plane vertical with the longitudinal direction of described phosphor powder layer, the side of the thinner thickness of described first phosphor powder layer and the thicker side of the thickness of described second phosphor powder layer are positioned at the same side on described predetermined direction, and described first phosphor powder layer and described second phosphor powder layer can move up close to side each other and away from each other.Adopting technique scheme, such as, by adopting two phosphor powder layers, can adjustable range be increased.
According to embodiment of the present utility model, described in the plane that the longitudinal direction of described predetermined direction and described first phosphor powder layer and described second phosphor powder layer limits, the first phosphor powder layer and described second phosphor powder layer are projected to small part overlap along the direction perpendicular to this plane.
Adopt technique scheme, such as, larger adjustable range can be realized in narrow space.
According to embodiment of the present utility model, described predetermined direction is approximately perpendicular to described light-emitting diode chip for backlight unit and described phosphor powder layer or described first phosphor powder layer and described second phosphor powder layer direction facing each other.
Adopting technique scheme, such as, when not increasing the size on light-emitting diode chip for backlight unit and the facing each other direction of phosphor powder layer, the adjustment of backlight colour temperature can be realized.
According to embodiment of the present utility model, described light-emitting diode chip for backlight unit is fixedly installed.
Adopt technique scheme, such as, only phosphor powder layer can move, and thereby simplify the mechanism realizing described light-emitting diode chip for backlight unit and described phosphor powder layer relative movement.
According to embodiment of the present utility model, described light-emitting diode chip for backlight unit is blue LED chip.
According to embodiment of the present utility model, described phosphor powder layer is yellow fluorescence bisque.
According to embodiment of the present utility model, provide a kind of backlight module, this backlight module comprises: above-mentioned light source; And light guide plate, entering light guide plate from the incidence surface of light guide plate at least partially of the light that described light source sends.
Adopt technique scheme, such as, light-emitting diode chip for backlight unit and phosphor powder layer can relative movements, can regulate the backlight colour temperature of backlight module thus easily.
According to embodiment of the present utility model, provide a kind of display unit, this display unit comprises: above-mentioned backlight module.
Adopt technique scheme, such as, light-emitting diode chip for backlight unit and phosphor powder layer can relative movements, can regulate backlight colour temperature easily thus.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the backlight module according to the first embodiment of the present utility model;
Fig. 2 is the close-up schematic view of the backlight module according to the first embodiment of the present utility model; And
Fig. 3 is the close-up schematic view of the backlight module according to the second embodiment of the present utility model.
Detailed description of the invention
Below in conjunction with Figure of description, detailed description of the invention of the present utility model is described.
Below in conjunction with accompanying drawing, the detailed description of the invention of the utility model embodiment is described in detail.In addition, in the following detailed description, for ease of explaining, many concrete details have been set forth to provide the complete understanding to this disclosure embodiment.But significantly, one or more embodiment also can be implemented when not having these details.In other cases, known construction and device diagrammatically embodies to simplify accompanying drawing.
Embodiment 1
Fig. 1,2 shows the backlight module 100 according to the first embodiment of the present utility model, and the backlight module 100 according to the first embodiment of the present utility model comprises: light source 10; And light guide plate 1, entering light guide plate 1 from the incidence surface 11 of light guide plate 1 at least partially of the light that described light source 10 sends.In the example shown in 1,2, phosphor powder layer 2 is arranged between the incidence surface 11 of light guide plate 1 and light-emitting diode chip for backlight unit 3.
As shown in Figure 1, 2, comprise according to the light source 10 of embodiment of the present utility model: light-emitting diode chip for backlight unit 3; And the phosphor powder layer 2 to be oppositely arranged with light-emitting diode chip for backlight unit 3, described phosphor powder layer 2 receives the first light that described light-emitting diode chip for backlight unit 3 sends, and launches second light different from the wavelength of the first light.Described light-emitting diode chip for backlight unit 3 can (such as, by mobile device or adjusting device) move relative to each other with described phosphor powder layer 2, and the fluorescent material amount of the phosphor powder layer 2 that the light that described light-emitting diode chip for backlight unit 3 is sent excites increases or reduces.The backlight colour temperature of backlight module can be regulated thus easily.
As illustrated in fig. 1 and 2, according to example of the present utility model, described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2 can relative movements on approaching and distancing direction, such as at described light-emitting diode chip for backlight unit 3 close to the direction of described phosphor powder layer 2 with away from relative movement on the direction of described phosphor powder layer 2.Adopt in this way, simple mode can be adopted to regulate light-emitting diode chip for backlight unit 3 and phosphor powder layer 2 can relative position, and substantially do not change the structure of traditional backlight module.
According to example of the present utility model, phosphor powder layer 2 can be attached on transparent element by fluorescent material and be formed, or fluorescent material mixes with the liquid that transparent such as adhesive etc. can solidify and is solidified to form.Light-emitting diode chip for backlight unit 3 can be any suitable light-emitting diode chip for backlight unit of such as blue LED chip 3, and phosphor powder layer 2 can be any suitable phosphor powder layer of such as yellow fluorescence bisque 2.
As shown in Figure 1, 2, the side towards described light-emitting diode chip for backlight unit 3 of described phosphor powder layer 2 has recess 23, described light-emitting diode chip for backlight unit 3 is arranged in this recess 23, and described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2 can relative movements on the direction of described light-emitting diode chip for backlight unit 3 close to the bottom of recess 23 and the direction away from the bottom of recess 23.By arranging recess 23, light-emitting diode chip for backlight unit 3 has just had certain activity space, can realize the adjustment of backlight colour temperature thus when substantially not increasing space shared by light-emitting diode chip for backlight unit 3 and phosphor powder layer 2.
See Fig. 1 and 2, according to an example of the present utility model, described light source 10 also comprises: carrier 4, multiple described light-emitting diode chip for backlight unit 3 is arranged on carrier 4 at predetermined intervals, described phosphor powder layer 2 has multiple recess 23 towards the side of described light-emitting diode chip for backlight unit 3, multiple described light-emitting diode chip for backlight unit 3 lays respectively in multiple recess 23, and described light-emitting diode chip for backlight unit 3 can move up in the direction of the bottom close to recess 23 with away from the side of the bottom of recess 23.Adopt in this way, multiple described light-emitting diode chip for backlight unit 3 can move together with the carrier 4 of such as printed circuit board (PCB) simultaneously, thus simple mechanism can be utilized to realize the adjustment of backlight colour temperature.
According to Fig. 1, in another example shown in 2, described light source 10 also comprises: carrier 4, described carrier 4 has multiple projection 5 arranged at predetermined intervals towards the side of described phosphor powder layer 2, multiple described light-emitting diode chip for backlight unit 3 is separately positioned on multiple protruding 5 of carrier at predetermined intervals, described phosphor powder layer 2 has multiple recess 23 towards the side of described light-emitting diode chip for backlight unit 3, multiple described light-emitting diode chip for backlight unit 3 and corresponding multiple protruding 5 lay respectively in multiple recess 23 at least partially, described light-emitting diode chip for backlight unit 3 can move up in the direction of the bottom close to recess 23 with away from the side of the bottom of recess 23.Darker recess 23 can be set thus, realize the adjustment of backlight colour temperature in a big way.
Example according to Fig. 1 of the present utility model, 2, described phosphor powder layer 2 is fixedly installed, and described light-emitting diode chip for backlight unit 3 can be arranged movably.
As shown in Figure 1, 2, according to example of the present utility model, described phosphor powder layer 2 can have elongated shape, and described carrier 4 can have streaky shape.Carrier 4 can be printed circuit board (PCB) or other any suitable parts.As shown in Figure 1, 2, described multiple recess 23 on the longitudinal direction of phosphor powder layer 2 (such as, be arranged in a row equally spacedly), and light-emitting diode chip for backlight unit 3 (such as, equally spacedly) on the longitudinal direction of described carrier 4 is arranged in a row; Or when arranging protruding 5, described multiple recess 23 on the longitudinal direction of phosphor powder layer 2 (such as, be arranged in a row equally spacedly), and multiple light-emitting diode chip for backlight unit 3 and multiple protruding 5 (such as, equally spacedly) on the longitudinal direction of described carrier 4 is arranged in a row.Adopt in this way, because multiple recess 23, multiple light-emitting diode chip for backlight unit 3 and multiple protruding 5 are arranged in a row, thus simple mechanism can be utilized to realize the adjustment of the backlight colour temperature of wide region when substantially not changing traditional backlight module structure and do not increase space shared by light-emitting diode chip for backlight unit 3 and phosphor powder layer 2.
As shown in Figure 1, 2, described phosphor powder layer 2 can have saw-tooth like shape towards the side of light-emitting diode chip for backlight unit 3.Form multiple projection by saw-tooth like shape, make the manufacture craft of phosphor powder layer 3 simple and be easy to realize.
According to embodiment of the present utility model, screw can be adopted to realize the relative movement of described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2, in order to realize the accurate location of be moved in described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2, slide rail can be set to guide be moved in described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2.Such as, the slide rail being arranged on printed circuit board (PCB) two ends can be adopted to guide this printed circuit board (PCB).In addition, except the mobile device that comprises screw and slide rail or adjusting device, the utility model also can adopt other suitable mobile device or adjusting device.
As shown in Figure 1, 2, described phosphor powder layer 2 can attach or be coated on the incidence surface 11 of light guide plate 1, and such as the side away from light-emitting diode chip for backlight unit 3 of described phosphor powder layer 2 is configured to be attached on the incidence surface 11 of light guide plate 1.Light-emitting diode chip for backlight unit 3 can move up in the direction of the incidence surface 11 towards light guide plate 1 with away from the side of the incidence surface 11 of light guide plate 1.Thus, the light that more light source 10 can be made to send enters the incidence surface 11 of light guide plate 1, and makes the mounting structure of phosphor powder layer 2 simple.
According to example of the present utility model, can not carrier be set, but light-emitting diode chip for backlight unit 3 is arranged on regulate light-emitting diode chip for backlight unit 3 the adjusting device of position or mobile device on.
In fig. 2, when light-emitting diode chip for backlight unit 3 and light guide plate 1 from must close to time, the thinner thickness of the phosphor powder layer 2 be excited is now high color temperature state; And when light-emitting diode chip for backlight unit 3 and light guide plate 1 from must away from time, when being namely positioned at the position shown in dotted line, the thickness of the phosphor powder layer 2 be excited can relatively increase, and is now low colour temperature state.
In the example shown in Fig. 1 and 2, by changing light-emitting diode chip for backlight unit 3 and the relative position of phosphor powder layer 2, just can produce different yellow fluorescent powder booster doses, then mixing with blue light, thus the white light of different-colour can be obtained, reach the object regulating backlight colour temperature.
The utility model is by the simple distance regulated between light-emitting diode chip for backlight unit 3 and light guide plate 1, thus realize the object changing colour temperature, and the thickness of phosphor powder layer 2 is not changeless, but can change on request, so just can realize very large colour temperature adjustable range.
Embodiment 2
Fig. 3 shows the backlight module 100 according to the second embodiment of the present utility model, and the backlight module 100 according to the second embodiment of the present utility model comprises: light source 10; And light guide plate 1, entering light guide plate 1 from the incidence surface 11 of light guide plate 1 at least partially of the light that described light source 10 sends.In the illustrated embodiment in which, phosphor powder layer 2 is arranged between the incidence surface 11 of light guide plate 1 and light-emitting diode chip for backlight unit 3.
As shown in Figure 1, 2, comprise according to the light source 10 of embodiment of the present utility model: light-emitting diode chip for backlight unit 3; And the phosphor powder layer 2 to be oppositely arranged with light-emitting diode chip for backlight unit 3, described phosphor powder layer 2 receives the first light that described light-emitting diode chip for backlight unit 3 sends, and launches second light different from the wavelength of the first light.Described light-emitting diode chip for backlight unit 3 can (such as, by mobile device or adjusting device) move relative to each other with described phosphor powder layer 2, and the fluorescent material amount of the phosphor powder layer 2 that the light that described light-emitting diode chip for backlight unit 3 is sent excites increases or reduces.The backlight colour temperature of backlight module can be regulated thus easily.
According to example of the present utility model, phosphor powder layer 2 can be attached on transparent element by fluorescent material and be formed, or fluorescent material mixes with the liquid that transparent such as adhesive etc. can solidify and is solidified to form.Light-emitting diode chip for backlight unit 3 can be any suitable light-emitting diode chip for backlight unit of such as blue LED chip 3, and phosphor powder layer 2 can be any suitable phosphor powder layer of such as yellow fluorescence bisque 2.
See Fig. 3, described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2 can at predetermined direction (such as, above-below direction in Fig. 3) upper relative movement, the thickness at least at the position relative with light-emitting diode chip for backlight unit 3 of described phosphor powder layer 2 increases along described predetermined direction or reduces.Described predetermined direction can be approximately perpendicular to described light-emitting diode chip for backlight unit 3 direction (left and right directions such as, in Fig. 3) facing each other with described phosphor powder layer 2.Thus, the structure of simple phosphor powder layer can be used to realize the adjustment of backlight colour temperature.When described predetermined direction is approximately perpendicular to described light-emitting diode chip for backlight unit 3 with the direction that described phosphor powder layer 2 is facing each other, namely, phosphor powder layer 2 when not increasing the size on light-emitting diode chip for backlight unit 3 direction (left and right directions in Fig. 3) facing each other with phosphor powder layer 2, can realize the adjustment of backlight colour temperature when the side of the incidence surface 11 being parallel to light guide plate 1 moves up.
As shown in Figure 3, described phosphor powder layer 2 can have elongated shape, and described predetermined direction can longitudinal vertical with described phosphor powder layer 2, and described phosphor powder layer 2 is at least wedge-type shape at the position relative with light-emitting diode chip for backlight unit 3, phosphor powder layer 2 structure is simple thus, is easy to realize.
In the example depicted in fig. 3, described phosphor powder layer 2 comprises the first phosphor powder layer 2 and the second phosphor powder layer 2, when watching in the plane vertical with the longitudinal direction of the second phosphor powder layer 2 with described first phosphor powder layer 2, the side of the thinner thickness of the first phosphor powder layer 2 and the thicker side of the thickness of the second phosphor powder layer 2 are positioned at the same side on described predetermined direction (above-below direction in Fig. 3).First phosphor powder layer 2 and the second phosphor powder layer 2 can move up close to side each other and away from each other.By adopting two phosphor powder layers, adjustable range can be increased.According to the example shown in Fig. 3 of the present utility model, in the plane (plane parallel with the incidence surface 11 of light guide plate 1 in Fig. 3) that described predetermined direction and the longitudinal direction of described phosphor powder layer (described first phosphor powder layer and described second phosphor powder layer) limit, the first phosphor powder layer 2 and the second phosphor powder layer 2 are projected to small part overlap along the direction perpendicular to this plane.Thus, larger adjustable range can be realized in narrow space.
Described light-emitting diode chip for backlight unit 3 can be fixedly installed, and only phosphor powder layer 2 can move, with the mechanism of light-emitting diode chip for backlight unit described in simple implementation 3 and described phosphor powder layer 2 relative movement.
According to embodiment of the present utility model, screw can be adopted to realize the relative movement of described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2, in order to realize the accurate location of be moved in described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2, slide rail can be set to guide be moved in described light-emitting diode chip for backlight unit 3 and described phosphor powder layer 2.Such as, the slide rail at the two ends being arranged on phosphor powder layer 2 can be adopted to guide this phosphor powder layer 2.In addition, except the mobile device that comprises screw and slide rail or adjusting device, the utility model also can adopt other suitable mobile device or adjusting device.
In the example depicted in fig. 3, the first phosphor powder layer 2 and the second phosphor powder layer 2 in wedge-type shape opposing upper and lower, and can regulate the relative position of the first phosphor powder layer 2 and the second phosphor powder layer 2.Because light-emitting diode chip for backlight unit 3 has certain light emitting anger, thus the first phosphor powder layer 2 and the second phosphor powder layer 2 relative position nearer time, the fluorescent material amount be excited is more, is now low colour temperature state; And yellow first phosphor powder layer 2 and the second phosphor powder layer 2 relative position far away time, the position namely shown in dotted line, the fluorescent material amount be excited is less, is now high color temperature state.By the relative position of simple adjustment first phosphor powder layer 2 and the second phosphor powder layer 2, thus realize the object changing colour temperature.
In the example depicted in fig. 3, by the relative position of the first phosphor powder layer 2 and the second phosphor powder layer 2 that regulate two wedge-type shapes, just can produce different yellow fluorescent powder booster doses, then mix with blue light, thus the white light of different-colour can be obtained, reach the object regulating backlight colour temperature.
According to embodiment of the present utility model, the utility model additionally provides a kind of display unit, and this display unit draws together the backlight module 100 of above-mentioned two embodiments.Because light-emitting diode chip for backlight unit 3 and the phosphor powder layer 2 of backlight module 100 can relative movements, backlight colour temperature can be regulated easily thus.
Display unit can be liquid crystal indicator or any display unit and other device needing backlight.
Although described embodiment of the present utility model, the utility model has been not limited to above-described embodiment.Such as, although described above is adjustment colour temperature, the light source in embodiment of the present utility model can regulate the ratio of blue light equally, can solve the visual fatigue problem that blue light brings thus.
Above embodiment is only for illustration of the utility model; and be not limitation of the utility model; the those of ordinary skill of relevant technical field; when not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (16)
1. a light source, is characterized in that, comprising:
Light-emitting diode chip for backlight unit; And
The phosphor powder layer be oppositely arranged with light-emitting diode chip for backlight unit, described phosphor powder layer receives the first light that described light-emitting diode chip for backlight unit sends, and launches second light different from the wavelength of the first light,
Described light-emitting diode chip for backlight unit and described phosphor powder layer can move relative to each other, and the fluorescent material amount of the phosphor powder layer that the light that described light-emitting diode chip for backlight unit is sent excites increases or reduces.
2. light source according to claim 1, is characterized in that:
Described light-emitting diode chip for backlight unit and described phosphor powder layer can relative movements on approaching and distancing direction.
3. light source according to claim 1, is characterized in that:
Described phosphor powder layer has recess towards the side of described light-emitting diode chip for backlight unit, described light-emitting diode chip for backlight unit is arranged in this recess, and described light-emitting diode chip for backlight unit and described phosphor powder layer can relative movements on the direction of the direction of described light-emitting diode chip for backlight unit close to the bottom of recess and the bottom away from recess.
4. light source according to claim 1, is characterized in that, also comprises:
Carrier, multiple described light-emitting diode chip for backlight unit is arranged on carrier at predetermined intervals, described phosphor powder layer has multiple recess towards the side of described light-emitting diode chip for backlight unit, multiple described light-emitting diode chip for backlight unit lays respectively in described multiple recess, and described light-emitting diode chip for backlight unit can move up in the direction of the bottom close to recess with away from the side of the bottom of recess.
5. light source according to claim 1, is characterized in that, also comprises:
Carrier, described carrier has multiple projection arranged at predetermined intervals towards the side of described phosphor powder layer, multiple described light-emitting diode chip for backlight unit is separately positioned in multiple projections of carrier at predetermined intervals, described phosphor powder layer has multiple recess towards the side of described light-emitting diode chip for backlight unit, multiple described light-emitting diode chip for backlight unit lays respectively in described multiple recess, and described light-emitting diode chip for backlight unit can move up in the direction of the bottom close to recess with away from the side of the bottom of recess.
6. the light source according to any one of claim 3 to 5, is characterized in that:
Described phosphor powder layer is fixedly installed.
7. light source according to claim 5, is characterized in that:
Described phosphor powder layer has elongated shape, and described carrier has streaky shape, and described multiple recess is arranged in a row on the longitudinal direction of phosphor powder layer, and multiple light-emitting diode chip for backlight unit and multiple projection are arranged in a row on the longitudinal direction of described carrier.
8. light source according to claim 7, is characterized in that:
The side towards light-emitting diode chip for backlight unit of described phosphor powder layer has saw-tooth like shape.
9. light source according to claim 1, is characterized in that:
The side away from light-emitting diode chip for backlight unit of described phosphor powder layer is configured to be attached on the incidence surface of light guide plate.
10. light source according to claim 1, is characterized in that:
Described light-emitting diode chip for backlight unit and described phosphor powder layer can relative movements in a predetermined direction,
The thickness at least at the position relative with light-emitting diode chip for backlight unit of described phosphor powder layer increases along described predetermined direction or reduces.
11. light sources according to claim 10, is characterized in that:
Described phosphor powder layer has elongated shape, and described predetermined direction is longitudinal vertical with described phosphor powder layer, and described phosphor powder layer is at least wedge-type shape at the position relative with light-emitting diode chip for backlight unit.
12. light sources according to claim 11, is characterized in that:
Described phosphor powder layer comprises the first phosphor powder layer and the second phosphor powder layer, when watching in the plane vertical with the longitudinal direction of described phosphor powder layer, the side of the thinner thickness of described first phosphor powder layer and the thicker side of the thickness of described second phosphor powder layer are positioned at the same side on described predetermined direction, and described first phosphor powder layer and described second phosphor powder layer can move up close to side each other and away from each other.
13., according to claim 10 to the light source described in any one in 12, is characterized in that:
Described light-emitting diode chip for backlight unit is fixedly installed.
14. light sources according to claim 1, is characterized in that:
Described light-emitting diode chip for backlight unit is blue LED chip, and described phosphor powder layer is yellow fluorescence bisque.
15. 1 kinds of backlight modules, is characterized in that, comprising:
Light source described in any one in claim 1 to 14; And
Light guide plate, entering light guide plate from the incidence surface of light guide plate at least partially of the light that described light source sends.
16. 1 kinds of display unit, is characterized in that, comprising:
Backlight module according to claim 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420746320.7U CN204201589U (en) | 2014-12-02 | 2014-12-02 | Light source, backlight module and display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420746320.7U CN204201589U (en) | 2014-12-02 | 2014-12-02 | Light source, backlight module and display unit |
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| Publication Number | Publication Date |
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| CN204201589U true CN204201589U (en) | 2015-03-11 |
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| CN201420746320.7U Active CN204201589U (en) | 2014-12-02 | 2014-12-02 | Light source, backlight module and display unit |
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| CN (1) | CN204201589U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456207A (en) * | 2014-12-02 | 2015-03-25 | 京东方科技集团股份有限公司 | Light source, backlight module and display device |
| CN104930411A (en) * | 2015-06-30 | 2015-09-23 | 京东方科技集团股份有限公司 | Backlight source module |
-
2014
- 2014-12-02 CN CN201420746320.7U patent/CN204201589U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456207A (en) * | 2014-12-02 | 2015-03-25 | 京东方科技集团股份有限公司 | Light source, backlight module and display device |
| WO2016086596A1 (en) * | 2014-12-02 | 2016-06-09 | 京东方科技集团股份有限公司 | Light source, backlight module and display device |
| CN104456207B (en) * | 2014-12-02 | 2017-02-22 | 京东方科技集团股份有限公司 | light source, backlight module and display device |
| US9995867B2 (en) | 2014-12-02 | 2018-06-12 | Boe Technology Group Co., Ltd. | Light source, backlight module and display apparatus |
| CN104930411A (en) * | 2015-06-30 | 2015-09-23 | 京东方科技集团股份有限公司 | Backlight source module |
| CN104930411B (en) * | 2015-06-30 | 2017-10-10 | 京东方科技集团股份有限公司 | A kind of backlight source module |
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