CN104075192A - Backlight and display device - Google Patents
Backlight and display device Download PDFInfo
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- CN104075192A CN104075192A CN201410293099.9A CN201410293099A CN104075192A CN 104075192 A CN104075192 A CN 104075192A CN 201410293099 A CN201410293099 A CN 201410293099A CN 104075192 A CN104075192 A CN 104075192A
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- backlight
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Abstract
The invention relates to the field of display techniques and discloses a backlight and a display device. The backlight comprises at least one adjusting module and at least one limiting structure, the adjusting module is used for moving a light bar to adjust the distance between the light bar and the incident plane of a light guide plate, the limiting structure is used for maintaining the distance between the light bar and the incident plane of the light guide plate to be the adjusted value to ensure that certain light mixing distance can be maintained between the light bar and the incident plane of the light guide plate, and accordingly uniformity of light mixing of the backlight can be guaranteed and display quality of products can be improved.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of backlight and display unit.
Background technology
Because liquid crystal itself is not luminous, in the various liquid crystal displays such as liquid crystal display, LCD TV (Liquid Crystal Display, hereinafter to be referred as " LCD "), all need to rely on outside backlight to realize demonstration.Backlight is divided into two kinds of side-light type and straight-down negatives according to distributing position, and side-light type back light is because its required luminescent device number is few, cost is low, the advantage of thin thickness is widely used in the LCD of small-medium size.
Shown in Fig. 1, be the partial sectional view of side-light type back light, it comprises from top to bottom backboard 1, is successively set on LGP 2 and the optical film material 3 of backboard 1 top, also comprise the lamp bar 6 of contiguous LGP 2 sides settings and the glue frame 4 for lightguide plate fixing 2 and optical film material 3, display floater 5 is placed on glue frame 4, finally by front frame 7, display floater 5 and backlight is fitted together again.The effect of LGP 2 is that the light of dipped beam end is imported and be transmitted to distance light end, on LGP 2, on the lower surface relative with exiting surface, is also printed with site, makes whole exiting surface light even, and forming surface light source, offers display floater, for showing.
The lamp bar 6 of traditional side-light type back light is fixed on backboard 1 by two-sided tape, in the time of design, if lamp bar 6 is too near apart from LGP 2, meeting mixed light is inhomogeneous, produce a bright dark alternatively distributed phenomenon, i.e. a focal point phenomenon (also referred to as firefly phenomenon).And, in the time of work, if higher temperature causes LGP 2 dilatancies, also can produce the optics such as light leak, mura bad.
Summary of the invention
The invention provides a kind of backlight and display unit, in order to solve in side-edge type backlight, due to design or temperature, cause lamp bar too near apart from LGP, produce the bad problem of optics.
For solving the problems of the technologies described above, the invention provides a kind of backlight, comprise lamp bar, backboard and be fixed on the LGP on backboard, described LGP comprises exit facet and the plane of incidence adjacent with described exit facet, described lamp bar is near the plane of incidence setting of described LGP, the light sending is injected in described LGP through the plane of incidence, then penetrates from exit facet, and described backlight also comprises:
At least one adjusting part, regulates the distance between described lamp bar and the plane of incidence of LGP for mobile described lamp bar;
At least one position limiting structure is the value after regulating for keeping distance between described lamp bar and the plane of incidence of LGP.
Backlight as above, preferably, described backlight also comprises:
Movable part, has the shape coordinating with described backboard, and between the plane of incidence and backboard of described LGP, described lamp bar is fixed on described movable part;
Described adjusting part regulates the distance between described lamp bar and the plane of incidence of LGP for mobile described movable part.
Backlight as above, preferably, the position that described backboard is corresponding with described lamp bar is provided with the first screw;
Described position limiting structure comprises:
Resilient infill, between described backboard and lamp bar;
Described adjusting part comprises:
Double-screw bolt, comprises first end and the second end, and described first end is fixedly connected with described lamp bar, and described the second end, through described the first screw, protrudes from the outside of described backlight;
With the nut that described double-screw bolt coordinates, the external diameter of described nut is greater than the aperture of described the first screw.
Backlight as above, preferably, described backlight also comprises:
Glue frame, one end of described glue frame is positioned at a side at the exit facet place of described LGP, and for fixing described LGP, the other end is between described lamp bar and backboard.
Backlight as above, preferably, described resilient infill compression is fixed between described backboard and lamp bar.
Backlight as above, preferably, described resilient infill is fixed on described backboard.
Backlight as above, preferably, described adjusting part and resilient infill interval arrange.
Backlight as above, preferably, described lamp bar is LED lamp bar, comprises multiple LED unit.
The present invention also provides a kind of display unit, comprises display floater and backlight, it is characterized in that, described backlight adopts backlight as above, and described display floater is positioned at a side at the exit facet place of the LGP of described backlight.
Display unit as above, preferably, described display floater is placed on the glue frame of described backlight;
Described display unit also comprises front frame, and one end of described front frame is positioned at the side that described display floater deviates from the exit facet of described LGP, and for fixing described display floater, the other end is corresponding with the lamp bar position of backlight;
On described front frame, be provided with the second screw, described the second screw is corresponding with the first screwhole position of described backlight, exposes the second end of the double-screw bolt of backlight.
The beneficial effect of technique scheme of the present invention is as follows:
In technique scheme, the backlight of display unit comprises at least one adjusting part and at least one position limiting structure, described adjusting part regulates the distance between lamp bar and the plane of incidence of LGP for portable lamp bar, it is the value after regulating that described position limiting structure is used for keeping the distance between described lamp bar and the plane of incidence of LGP, make can keep certain light mixing distance between lamp bar and the plane of incidence of LGP, thereby ensure the even light mixing of backlight, improve the display quality of product.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 represents the partial structurtes schematic diagram of the display unit of available technology adopting side-edge type backlight;
Fig. 2 represents the partial top view of display unit in the embodiment of the present invention;
Fig. 3 presentation graphs 2 is along the cutaway view of A-A direction;
Fig. 4 presentation graphs 2 is along the cutaway view of B-B direction.
Detailed description of the invention
In side-edge type backlight, between the plane of incidence of lamp bar and LGP (light of lamp bar is injected LGP from this plane of incidence), must keep certain light mixing distance.In when design, if the distance between lamp bar and the plane of incidence of LGP is too near, will mixed light inhomogeneous, generation firefly phenomenon.And, in the time of work, if higher temperature causes LGP dilatancy, also can produce the optics such as light leak, mura bad.
In order to solve the problems of the technologies described above, the invention provides a kind of backlight, distance between its lamp bar and the plane of incidence of LGP is not fixed, but can regulate, thereby when the distance between lamp bar and the plane of incidence of LGP is too near, can regulate between lamp bar and the plane of incidence of LGP and keep certain light mixing distance, effectively solve the problems of the technologies described above.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Shown in Fig. 2-Fig. 4, a kind of side-edge type backlight is provided in the embodiment of the present invention, it comprises lamp bar 6, backboard 1, and is fixed on LGP 2 and optical film material 3 on backboard 1.LGP 2 comprises exit facet and the plane of incidence adjacent with described exit facet.Lamp bar 6 is near the plane of incidence setting of LGP 2, and the light sending is injected in LGP 2 through the plane of incidence of LGP 2, then penetrates from the exit facet of LGP 2, then after the adjusting of optical film material 3, offers display floater 5.
Described backlight also comprises at least one adjusting part and at least one position limiting structure.Described adjusting part regulates the distance between lamp bar 6 and the plane of incidence of LGP 2 for portable lamp bar 6, and it is the value after regulating that described position limiting structure is used for keeping the distance between lamp bar 6 and the plane of incidence of LGP 2.Because the position of LGP 2 is fixed, can regulate the distance between lamp bar 6 and the plane of incidence of LGP 2 by portable lamp bar 6.
Backlight of the present invention regulates the distance between lamp bar and the plane of incidence of LGP by portable lamp bar, and to keep distance between lamp bar and the plane of incidence of LGP be the value after regulating, make can keep certain light mixing distance between lamp bar and the plane of incidence of LGP, thereby ensure the even light mixing of backlight, improve the display quality of product.
Wherein, lamp bar 6 can be light emitting diode (Light Emitting Diode, hereinafter to be referred as " LED ") lamp bar, comprises multiple LED unit 13.LED unit 13 has that development properties is good, long service life, without advantages such as mercury environmental protection.
In a concrete embodiment, movable part 8 between the plane of incidence at LGP 2 and backboard 1 is set, lamp bar 6 is fixed on movable part 8.Described adjusting part regulates the distance between lamp bar 6 and the plane of incidence of LGP 2 specifically for mobile movable part 8.Wherein, movable part 8 has the shape coordinating with backboard 1, to ensure that movable part 8 can freely move back and forth, stable support lamp bar 1.
In the present embodiment, described adjusting part is specially double-screw bolt 21 and the nut 22 of cooperation, and in backboard 1 position corresponding with lamp bar 6, the first screw 10 is set.Double-screw bolt 21 comprises first end and the second end, and described first end is fixedly connected with lamp bar 6, specifically can be fixedly connected with movable part 8.Described position limiting structure comprises resilient infill 9.Wherein, resilient infill 9 is between backboard 1 and lamp bar 6, and the external diameter of nut 22 is greater than the aperture of the first screw 10.The second end of double-screw bolt 21, through the first screw 10, protrudes from the outside of backlight.Thereby nut 22, from the continuous screw-in of the second end of double-screw bolt 21, can drive lamp bar 6 to move, elasticity of compression filling member 9, away from the plane of incidence of LGP 2, has increased the distance between lamp bar 6 and the plane of incidence of LGP 2.And the elastic restoring force of resilient infill 9 can to keep distance between lamp bar 6 and the plane of incidence of LGP 2 be the value after regulating.Because resilient infill 9 is between backboard 1 and lamp bar 6, easily realize, can simplify the structure of backlight.
It should be noted that a specific implementation structure of above-mentioned just adjusting part and position limiting structure is not a kind of restriction.For example: also can near the position of the second end of double-screw bolt 21, block piece be set at backboard 1, when after the distance having regulated between lamp bar 6 and the plane of incidence of LGP 2, movement by the spacing lamp bar 6 of block piece away from the plane of incidence of LGP 2, keeping the distance between lamp bar 6 and the plane of incidence of LGP 2 is the value after regulating.
In prior art, be generally to fix LGP 2 by glue frame 4 is set.Concrete, one end of glue frame 4 is positioned at a side at the exit facet place of LGP 2, for lightguide plate fixing 2.
In the present embodiment, the other end of glue frame 4 is set between lamp bar 6 and backboard 1, specifically can be between movable part 8 and backboard 1.Because glue frame 4 itself has certain elasticity, can further increase the adjustable distance scope between lamp bar 6 and the plane of incidence of LGP 2.More specifically, resilient infill 9 can be between glue frame 4 and movable part 8.
Further, when described adjusting part is the double-screw bolt 21 that coordinates and when nut 22, also need to the 3rd screw 12 be set in glue frame 4 position corresponding with the first screw 10.The second end of double-screw bolt 21, successively through the 3rd screw 12 and the first screw 10, protrudes from the outside of backlight.
Wherein, resilient infill 9 can be fixed between backboard 1 and lamp bar 6 by the mode of elastic compression, also resilient infill 9 can be fixed on backboard 1.
Preferably, described adjusting part (specifically comprising double-screw bolt 21 and nut 22) and resilient infill 9 intervals arrange, and as shown in Figure 2, make the position homogeneous of whole lamp bar 6, and the distance between the plane of incidence of LGP 2 is consistent, the fine even light mixing that must ensure backlight.
Backlight in the present embodiment specifically comprises:
Backboard 1, the position corresponding with lamp bar 6 has the first screw 10;
Be positioned at the LGP 2 on backboard 1, LGP 2 comprises exit facet and the plane of incidence adjacent with described exit facet;
Movable part 8, between backboard 1 and the plane of incidence of LGP 2;
Resilient infill 9, between glue frame 4 and movable part 8;
Lamp bar 6, is fixed on movable part 8, and the plane of incidence setting of close LGP 2, and the light that lamp bar 6 sends is injected in described LGP through the plane of incidence, then penetrates from exit facet, then after the adjusting of optical film material 3, offers display floater 5;
Glue frame 4, the position corresponding with the first screw 10 has the 3rd screw 12, and one end of glue frame 4 is positioned at a side at the exit facet place of LGP 3, and for lightguide plate fixing 2, the other end is between movable part 8 and backboard 1;
The double-screw bolt 21 and the nut 22 that coordinate, the external diameter of nut 22 is greater than the aperture of the first screw 10, and the first end of double-screw bolt 21 is fixedly connected with movable part 8, and the second end, successively through the 3rd screw 12 and the first screw 10, protrudes from the outside of backlight.Nut 22 is from the continuous screw-in of the second end of double-screw bolt 21, can mobile movable part 8 elasticity of compression filling member 9, away from the plane of incidence of LGP 2, thereby increase the distance between lamp bar 6 and the plane of incidence of LGP 2.It is the value after regulating that the elastic restoring force of resilient infill 9 can keep the distance between lamp bar 6 and the plane of incidence of LGP 2.
By adopting backlight of the present invention, even if product design is made a fault, or operating temperature is higher, produce the optics such as firefly phenomenon, light leak, mura bad, also direct scrap products, can pass through rotary nut 22 and move back and forth on double-screw bolt 21, carry out the distance between free adjustment lamp bar 6 and the plane of incidence of LGP 2, thereby improve firefly phenomenon, the optics such as light leak, mura of avoiding the dilatancy of LGP 2 to produce is bad, has greatly improved product yield.
A kind of display unit is also provided in the embodiment of the present invention, and as shown in Figure 3, described display unit comprises display floater 5 and backlight, and described backlight adopts above-mentioned backlight, and display floater 5 is positioned at a side at the exit facet place of the LGP 2 of described backlight.
Owing to having ensured the even light mixing of described backlight, the optics such as light leak, mura that has overcome the generation of LGP dilatancy is bad, thereby has improved the display quality of display unit.
As shown in Figure 3, in display unit, display floater 5 is generally placed on the glue frame 4 of described backlight, and front frame 7 is set, and one end of front frame 7 is positioned at the side that display floater 5 deviates from the exit facet of LGP 2, for fixed display panel 5, the other end is corresponding with lamp bar 6 positions of backlight.
Correspondingly, on front frame 7, also there is second screw 11 corresponding with the first screw 10 positions, expose the second end of the double-screw bolt 21 of backlight.Concrete, the second end of double-screw bolt 21, successively through the 3rd screw 12, the first screw 10 and the second screw 11, protrudes from the outside of backlight.
In technical scheme of the present invention, the backlight of display unit comprises at least one adjusting part and at least one position limiting structure, described adjusting part regulates the distance between lamp bar and the plane of incidence of LGP for portable lamp bar, it is the value after regulating that described position limiting structure is used for keeping the distance between lamp bar and the plane of incidence of LGP, make can keep certain light mixing distance between lamp bar and the plane of incidence of LGP, thereby ensure the even light mixing of backlight, improve the display quality of display unit.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and replacement, these improvement and replacement also should be considered as protection scope of the present invention.
Claims (10)
1. a backlight, comprise lamp bar, backboard and be fixed on the LGP on backboard, described LGP comprises exit facet and the plane of incidence adjacent with described exit facet, described lamp bar is near the plane of incidence setting of described LGP, the light sending is injected in described LGP through the plane of incidence, then penetrate from exit facet, it is characterized in that, described backlight also comprises:
At least one adjusting part, regulates the distance between described lamp bar and the plane of incidence of LGP for mobile described lamp bar;
At least one position limiting structure is the value after regulating for keeping distance between described lamp bar and the plane of incidence of LGP.
2. backlight according to claim 1, is characterized in that, described backlight also comprises:
Movable part, has the shape coordinating with described backboard, and between the plane of incidence and backboard of described LGP, described lamp bar is fixed on described movable part;
Described adjusting part regulates the distance between described lamp bar and the plane of incidence of LGP for mobile described movable part.
3. backlight according to claim 1, is characterized in that, the position that described backboard is corresponding with described lamp bar is provided with the first screw;
Described position limiting structure comprises:
Resilient infill, between described backboard and lamp bar;
Described adjusting part comprises:
Double-screw bolt, comprises first end and the second end, and described first end is fixedly connected with described lamp bar, and described the second end, through described the first screw, protrudes from the outside of described backlight;
With the nut that described double-screw bolt coordinates, the external diameter of described nut is greater than the aperture of described the first screw.
4. backlight according to claim 3, is characterized in that, described backlight also comprises:
Glue frame, one end of described glue frame is positioned at a side at the exit facet place of described LGP, and for fixing described LGP, the other end is between described lamp bar and backboard.
5. according to the backlight described in claim 3 or 4, it is characterized in that, described resilient infill compression is fixed between described backboard and lamp bar.
6. according to the backlight described in claim 3 or 4, it is characterized in that, described resilient infill is fixed on described backboard.
7. according to the backlight described in claim 3 or 4, it is characterized in that, described adjusting part and resilient infill interval arrange.
8. backlight according to claim 1, is characterized in that, described lamp bar is LED lamp bar, comprises multiple LED unit.
9. a display unit, comprises display floater and backlight, it is characterized in that, described backlight adopts the backlight described in claim 1-8 any one, and described display floater is positioned at a side at the exit facet place of the LGP of described backlight.
10. display unit according to claim 9, is characterized in that, described display floater is placed on the glue frame of described backlight;
Described display unit also comprises front frame, and one end of described front frame is positioned at the side that described display floater deviates from the exit facet of described LGP, and for fixing described display floater, the other end is corresponding with the lamp bar position of backlight;
On described front frame, be provided with the second screw, described the second screw is corresponding with the first screwhole position of described backlight, exposes the second end of the double-screw bolt of backlight.
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| CN201410293099.9A CN104075192B (en) | 2014-06-25 | 2014-06-25 | Backlight and display device |
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| CN201410293099.9A CN104075192B (en) | 2014-06-25 | 2014-06-25 | Backlight and display device |
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| CN104075192B CN104075192B (en) | 2017-09-15 |
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| CN104566040A (en) * | 2015-01-16 | 2015-04-29 | 京东方科技集团股份有限公司 | Backlight module and a display device |
| CN104763979A (en) * | 2015-01-28 | 2015-07-08 | 合肥京东方光电科技有限公司 | LGP (Light Guide Plate), backlight module and display device |
| CN105137653A (en) * | 2015-08-27 | 2015-12-09 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN105864722A (en) * | 2016-05-30 | 2016-08-17 | 众普森科技（株洲）有限公司 | LED panel lamp and frame assembly |
| CN106678562A (en) * | 2017-01-23 | 2017-05-17 | 彩虹奥特姆（湖北）光电有限公司 | Device with gap between lamp plate supporting piece and light guiding plate constant |
| WO2018176772A1 (en) * | 2017-03-30 | 2018-10-04 | 京东方科技集团股份有限公司 | Backlight module and display device |
| WO2021017311A1 (en) * | 2019-07-29 | 2021-02-04 | 武汉华星光电技术有限公司 | Backlight module and display module |
| CN113217876A (en) * | 2021-04-06 | 2021-08-06 | 马瑞利汽车零部件(芜湖)有限公司 | Light guide incident end supporting seat structure integrated with elastic structure |
| TWI743880B (en) * | 2020-07-10 | 2021-10-21 | 瑞儀光電股份有限公司 | Backlight module and display device |
| CN114660699A (en) * | 2022-03-25 | 2022-06-24 | 江苏毅昌科技有限公司 | Assembly structure of ELED side-entry module |
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| TWI818810B (en) * | 2022-11-18 | 2023-10-11 | 茂林光電科技股份有限公司 | Manufacturing method of thin light guide module and thin light guide module thereof |
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| US20200257039A1 (en) * | 2017-03-30 | 2020-08-13 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| US10914889B2 (en) | 2017-03-30 | 2021-02-09 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| WO2021017311A1 (en) * | 2019-07-29 | 2021-02-04 | 武汉华星光电技术有限公司 | Backlight module and display module |
| TWI743880B (en) * | 2020-07-10 | 2021-10-21 | 瑞儀光電股份有限公司 | Backlight module and display device |
| CN113217876A (en) * | 2021-04-06 | 2021-08-06 | 马瑞利汽车零部件(芜湖)有限公司 | Light guide incident end supporting seat structure integrated with elastic structure |
| CN114660699A (en) * | 2022-03-25 | 2022-06-24 | 江苏毅昌科技有限公司 | Assembly structure of ELED side-entry module |
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