CN204790052U - Poor light module and liquid crystal display device - Google Patents
Poor light module and liquid crystal display device Download PDFInfo
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- CN204790052U CN204790052U CN201520434532.6U CN201520434532U CN204790052U CN 204790052 U CN204790052 U CN 204790052U CN 201520434532 U CN201520434532 U CN 201520434532U CN 204790052 U CN204790052 U CN 204790052U
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Abstract
The utility model discloses a side income formula backlight unit, including the light guide plate with set up the lamp strip in light guide plate one side, the plain noodles is gone into towards the arc that the side of lamp strip has the indent to the light guide plate, the arc that the lamp strip has the evagination goes out the plain noodles, goes out the plain noodles and goes into the plain noodles adaptation and correspond the setting, installs the light source on the play plain noodles, the light guide plate is kicked into by the income plain noodles to light that the light source sent. The utility model also discloses a LCD of including above -mentioned backlight unit. The utility model discloses a backlight unit and LCD set up curved plain noodles on the lamp strip, set up curved income plain noodles in the position that the light guide plate corresponds, through the transmission of curved plain noodles with income plain noodles realization light. Simultaneously, install the light source on a plain noodles for traditional side linear type is gone into the change of light mode and is gone into light for the central arc formula of side, has increased the income optic angle degree of light source, has guaranteed the light -emitting effect in reduce cost.
Description
Technical field
The utility model relates to back light model setting technology field, particularly relates to backlight module and liquid crystal display.
Background technology
At present, liquid crystal display industry is selected to reduce costs to tackle fierce market competition one after another, and the method reduced costs generally has the quantity etc. changed diaphragm material, reduce diaphragm quantity or LED lamp bead.But these methods all likely affect the display effect of LCD screen, such as, the number reducing LED lamp bead when existing lamp bar length is constant can exist and causes the problem that bright dipping is uneven, dark area appears in screen.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of backlight module, is intended to solve when not changing existing lamp bar structure, cost-saving only by a minimizing LED number, can cause the technical matters that bright dipping is uneven, dark area appears in screen.
For achieving the above object, the utility model provides a kind of backlight module, comprise light guide plate and the lamp bar being arranged on described light guide plate side, described light guide plate has the arc incidence surface of indent towards the side of lamp bar, described lamp bar has the arc exiting surface of evagination, described exiting surface and incidence surface are adaptive and correspondingly arrange, and described exiting surface is provided with light source, and the light that described light source sends injects described light guide plate by described incidence surface.
Preferably, described lamp bar is the first end face towards the end face of described light guide plate, and described first end face comprises the first plane, the second plane and described exiting surface, and described exiting surface is between described first plane and described second plane;
Described light guide plate is the second end face towards the end face of described lamp bar, described second end face comprise described incidence surface, with described first parallel plane 3rd plane and with described second parallel plane 4th plane, described incidence surface is between described 3rd plane and described 4th plane.
Preferably, described exiting surface is positioned at the middle part of described first end face.
Preferably, described first plane and described second co-planar are arranged, and described 3rd plane and described 4th co-planar are arranged.
Preferably, described light guide plate comprise by described 3rd plane to deviate from first area that described lamp article direction extends to form, by described incidence surface to deviate from second area that described lamp article direction extends to form and by described Siping City towards the 3rd region deviating from described lamp article direction and extend to form
The site of described first area is gradually close along the direction near described 3rd plane, and the site in described 3rd region is along gradually close near described quadriplanar direction.
Preferably, the boundary line of described exiting surface and described first plane is the first boundary line, and the boundary line of described exiting surface and described second plane is the second boundary line, and described first boundary line is parallel with described second boundary line.
Preferably, the distance between described first boundary line and described second boundary line is chord length, and the direction that described first plane edge deviates from described exiting surface is length direction, and described chord length is the twice of the length of described first plane.
Preferably, the central angle that described chord length is corresponding is 120 °.
Preferably, described backlight module also comprises the reflector plate for leaded light, and described reflector plate is connected with described light guide plate.
In addition, for achieving the above object, the utility model also provides a kind of liquid crystal display, the backlight module comprising liquid crystal panel and be connected with described liquid crystal panel, described backlight module comprises lamp bar and light guide plate, described lamp bar is convexly equipped with the arc exiting surface for installing light source, and described light guide plate is arranged with the arc incidence surface towards described exiting surface, and the light that described light source sends injects described light guide plate by described incidence surface.
Backlight module of the present utility model and liquid crystal display, lamp bar arranges the exiting surface of arc, arranges the incidence surface of arc in the position that light guide plate is corresponding, is realized the transmission of light by the exiting surface of arc and incidence surface., be arranged on by light source on exiting surface, make traditional side linear pattern light inlet mode change to side local arc form light inlet, what increase light source enters angular, while reducing costs, ensure that light-out effect meanwhile.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model backlight module one embodiment;
Fig. 2 is the structural representation of lamp bar in Fig. 1;
Fig. 3 is the structural representation of light guide plate in Fig. 1;
Fig. 4 is the light inlet effect contrast figure of arc exiting surface and prior art cathetus shape exiting surface in Fig. 1.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
It should be noted that, in description of the present utility model, term " on ", D score, "left", "right", " vertically ", the orientation of the instruction such as " level " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, it is not the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
Referring to figs. 1 through Fig. 4, Fig. 1 is the structural representation of the utility model backlight module one embodiment, Fig. 2 is the structural representation of lamp bar in Fig. 1, and Fig. 3 is the structural representation of light guide plate in Fig. 1, and Fig. 4 is the light inlet effect contrast figure of arc exiting surface and prior art cathetus shape exiting surface in Fig. 1.
The utility model provides a kind of backlight module, this backlight module comprises light guide plate 20 and is arranged on the lamp bar 10 of light guide plate side in one embodiment, light guide plate 20 has the arc incidence surface 21 of indent towards the side of lamp bar 10, lamp bar 10 has the arc exiting surface 11 of evagination, exiting surface 11 and incidence surface 21 are adaptive and correspondingly arrange, exiting surface 11 is provided with light source 12, the light that light source 12 sends injects light guide plate 20 by incidence surface 21.
Particularly, the lamp bar 10 in backlight module is provided with the exiting surface 11 of arc, and this exiting surface 11 is protruding towards light guide plate 20, and this exiting surface 11 is equipped with the light source 12 for emission of light.In Fig. 1, light guide plate 20 is arranged on the right side of lamp bar 10, and light guide plate 20 is provided with incidence surface 21, and the radian of the radian that this incidence surface 21 caves inward and exiting surface 11 projection adapts, with make incidence surface 21 and exiting surface 11 corresponding.In order to prevent lamp bar 10 expanded by heating from answering back to light guide plate 20, better entering light effect to realize simultaneously, between lamp bar 10 and light guide plate 20, leaving gap.
Preferably, light source 12 is the LED lamp bead being evenly arranged in exiting surface 11.
Backlight module of the present utility model, lamp bar 10 arranges the exiting surface 11 of arc, arranges the incidence surface 21 of arc in the position of light guide plate 20 correspondence, is realized the transmission of light by the exiting surface 11 of arc and incidence surface 21.Light source 12 is arranged on exiting surface 11, traditional side linear pattern light inlet mode is made to change to side arc form light inlet, what increase light source 12 enters angular (with reference to figure 4, in Fig. 4, part A is backlight module of the present utility model, part B is backlight module of the prior art, wherein the direction of arrow is the direction of anaclasis), while reducing costs, ensure that light-out effect.
Further, lamp bar 10 is that the first end face 15, first end face 15 comprises the first plane 13, second plane 14 and exiting surface 11 towards the end face of light guide plate 20, and exiting surface 11 is between the first plane 13 and the second plane 14; Light guide plate 20 is the second end face 25 towards the end face of lamp bar 10, second end face 25 comprises incidence surface 21, three plane 22 parallel with the first plane 13 and four plane 23 parallel with the second plane 14, and incidence surface 21 is between the 3rd plane 22 and the 4th plane 23.
With reference to figure 2, the first end face 15 comprises the first plane 13, exiting surface 11 and the second plane 14, second end face 25 that connect successively from top to bottom and comprises the 3rd plane 22, incidence surface 21 and the 4th plane 23 that connect successively.In order to improve optical effect, the second end face 25 is set to face with first end and adapts, wherein, the first plane 13 is parallel with the 3rd plane 22, and the second plane 14 is parallel with the 4th plane 23.In prior art, lamp bar 10 is exiting surface 11 towards the one side entirety of light guide plate 20, needs like this, than installing more LED lamp bead in the utility model, cost can be caused to increase.Exiting surface 11 in the utility model is only a part for the first end face 15, therefore can reduce the number of installed LED lamp bead, thus cost-saving.
Preferably, exiting surface 11 is positioned at the middle part of the first end face 15.In order to ensure light-out effect, preventing the situation that screen intensity is uneven, in the present embodiment, exiting surface 11 being arranged on the position, middle of the first end face 15, namely the length of the first plane 13 is equal with the in the vertical direction length of the second plane 14.
In like manner, incidence surface 21 is positioned at the middle part of the second end face 25.
Preferably, the first plane 13 and the coplanar setting of the second plane 14, the 3rd plane 22 and the coplanar setting of the 4th plane 23.With reference to figure 2, the first plane 13 and the second plane 14 are in same perpendicular, are so not only convenient to production and the assembling of lamp bar 10, meanwhile, are convenient to making rational planning for of backlight unit structure.In like manner, by the 3rd plane 22 and the coplanar setting of the 4th plane 23.
Further, light guide plate 20 comprise by the 3rd plane 22 to deviate from the lamp article first area that 10 directions extend to form 25, by incidence surface 21 to deviate from the lamp article second area that 10 directions extend to form 26 and by the 4th plane 23 to the 3rd region 27 deviating from lamp article 10 directions and extend to form, the site of first area 25 is gradually close along the direction near the 3rd plane 22, and the site in the 3rd region 27 is gradually close along the direction near the 4th plane 23.
With reference to figure 3, light guide plate 20 comprises connected first area 25, second area 26 and the 3rd region 27, wherein, first area 25 is near site, the position comparatively dense of lamp bar 10, away from lamp bar 10 site, position loosely, this improves according to the incident direction adjustment of the arc incidence surface 21 of light guide plate 20 and light source 12.Light is reflected by incidence surface 21 and enters in light guide plate 20, because incidence surface 21 is arc-shaped curved surface, so refraction angle difference can cause the light in not region in light guide plate 20 to have dividing of density.In order to regulate light in light guide plate 20, make backlight module uniform in light emission, subregion, the site difference in light guide plate 20 arranged, its concrete form can adjust according to the concrete structure of backlight module, and the utility model does not limit this.
Preferably, light guide plate 20 is formed in one structure, and it is one-body molded that such light guide plate 20 can pass through the techniques such as injection moulding, reverse mould or punching press.Wherein, the making of site does not need to increase technological process separately more yet, like this can be cost-saving, also improves the stability of structure simultaneously.
Preferably, backlight module also comprises the reflector plate 30 for leaded light, and reflector plate 30 is connected with light guide plate 20.With reference to figure 1, be also provided with reflector plate 30 in the surrounding of light guide plate 20, the concrete structure of these reflector plates 30 and material can adjust according to the difference of setting position, and the utility model does not limit this.What the utility model adopted is side central arcuate formula light inlet, when reducing the number of LED lamp bead and reducing incidence surface 21 area, the 3rd plane 22 and the 4th plane 23 of light guide plate 20 is connected with reflector plate 30, improves the transmission efficiency of light further
Preferably, reflector plate 30 comprises white pet layer and transparent mucigel.Be pasted on the lateral end panel of light guide plate 20 by transparent viscose, when light is delivered to light guide plate 20 lateral end panel, its light reflection returns in light guide plate 20 and utilizes luminous energy once again by white pet layer, thus strengthens the utilization factor of light.
Further, the boundary line of exiting surface 11 and the first plane 13 is the first boundary line 111, and the boundary line of exiting surface 11 and the second plane 14 is that the second boundary line 112, first boundary line 111 is parallel with the second boundary line 112.
Particularly, upper and lower two limits of arc exiting surface 11 are parallel to each other, are so not only convenient to making rational planning for of backlight unit structure, can also optimize the light-out effect of backlight module.In like manner, upper and lower two limits of incidence surface 21 are also set to parallel to each other.
Preferably, the distance between the first boundary line 111 and the second boundary line 112 is chord length, and the first plane 13 is length direction along the direction deviating from exiting surface 11, and chord length is the twice of the length of the first plane 13.With reference to figure 2, the length of the first plane 13 and the second plane 14 is a, and the length of exiting surface 11 in the vertical direction and chord length are b, wherein, and b=2a.Such exiting surface 11 is set to the middle of the first end face 15, and the length of exiting surface 11 equals the half of the first end face 15 length, thus realizes side central arcuate formula light inlet, can take into account financial cost and light-out effect simultaneously.
Certainly, in other embodiments, the relation of a and b also can be arranged according to the concrete dimensions of backlight module.Such as, when the radian of exiting surface 11 or the lighting angle of light source 12 there are differences, the relation of b and a also needs corresponding adjustment, makes the arc peak of exiting surface 11 at the center of the first end face.
Preferably, the central angle that chord length is corresponding is 120 °.Central angle is set to 120 °, light source 12 can be made to have larger rising angle, meanwhile, the exiting surface 11 of this radian is also convenient to produce and assembling after tested.
The utility model also provides a kind of liquid crystal display, the backlight module comprising liquid crystal panel and be connected with liquid crystal panel.This backlight module can comprise technical schemes all in previous embodiment, and its detailed construction can refer to previous embodiment, does not repeat them here.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a side entrance back module, comprise light guide plate and the lamp bar being arranged on described light guide plate side, it is characterized in that, described light guide plate has the arc incidence surface of indent towards the side of lamp bar, described lamp bar has the arc exiting surface of evagination, described exiting surface and incidence surface are adaptive and correspondingly arrange, and described exiting surface is provided with light source, and the light that described light source sends injects described light guide plate by described incidence surface.
2. backlight module as claimed in claim 1, it is characterized in that, described lamp bar is the first end face towards the end face of described light guide plate, and described first end face comprises the first plane, the second plane and described exiting surface, and described exiting surface is between described first plane and described second plane;
Described light guide plate is the second end face towards the end face of described lamp bar, described second end face comprise described incidence surface, with described first parallel plane 3rd plane and with described second parallel plane 4th plane, described incidence surface is between described 3rd plane and described 4th plane.
3. backlight module as claimed in claim 2, it is characterized in that, described exiting surface is positioned at the middle part of described first end face.
4. backlight module as claimed in claim 3, it is characterized in that, described first plane and described second co-planar are arranged, and described 3rd plane and described 4th co-planar are arranged.
5. backlight module as claimed in claim 4, it is characterized in that, described light guide plate comprise by described 3rd plane to deviate from first area that described lamp article direction extends to form, by described incidence surface to deviate from second area that described lamp article direction extends to form and by described Siping City towards the 3rd region deviating from described lamp article direction and extend to form
The site of described first area is gradually close along the direction near described 3rd plane, and the site in described 3rd region is along gradually close near described quadriplanar direction.
6. backlight module as claimed in claim 4, it is characterized in that, the boundary line of described exiting surface and described first plane is the first boundary line, and the boundary line of described exiting surface and described second plane is the second boundary line, and described first boundary line is parallel with described second boundary line.
7. backlight module as claimed in claim 6, it is characterized in that, distance between described first boundary line and described second boundary line is chord length, and the direction that described first plane edge deviates from described exiting surface is length direction, and described chord length is the twice of the length of described first plane.
8. backlight module as claimed in claim 7, is characterized in that, central angle corresponding to described chord length is 120 °.
9. the backlight module as described in any one of claim 1 to 8, is characterized in that, described backlight module also comprises the reflector plate for leaded light, and described reflector plate is connected with described light guide plate.
10. a liquid crystal display, the backlight module comprising liquid crystal panel and be connected with described liquid crystal panel, is characterized in that, described backlight module is the backlight module as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434532.6U CN204790052U (en) | 2015-06-23 | 2015-06-23 | Poor light module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434532.6U CN204790052U (en) | 2015-06-23 | 2015-06-23 | Poor light module and liquid crystal display device |
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| Publication Number | Publication Date |
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| CN204790052U true CN204790052U (en) | 2015-11-18 |
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| CN201520434532.6U Active CN204790052U (en) | 2015-06-23 | 2015-06-23 | Poor light module and liquid crystal display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422540A (en) * | 2017-09-18 | 2017-12-01 | 惠科股份有限公司 | Display device |
| CN107589593A (en) * | 2017-09-18 | 2018-01-16 | 惠科股份有限公司 | Display device |
| CN107678209A (en) * | 2017-09-18 | 2018-02-09 | 惠科股份有限公司 | Display device |
| CN108287389A (en) * | 2018-02-24 | 2018-07-17 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN108848239A (en) * | 2018-04-19 | 2018-11-20 | Oppo广东移动通信有限公司 | Breath light component and electronic device |
| CN110211488A (en) * | 2019-05-09 | 2019-09-06 | 安徽赛迈特光电股份有限公司 | Quantum dot backlight and vehicle-carrying display screen with it |
| JP7467231B2 (en) | 2020-05-22 | 2024-04-15 | 株式会社ジャパンディスプレイ | Display device |
-
2015
- 2015-06-23 CN CN201520434532.6U patent/CN204790052U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422540A (en) * | 2017-09-18 | 2017-12-01 | 惠科股份有限公司 | Display device |
| CN107589593A (en) * | 2017-09-18 | 2018-01-16 | 惠科股份有限公司 | Display device |
| CN107678209A (en) * | 2017-09-18 | 2018-02-09 | 惠科股份有限公司 | Display device |
| WO2019052444A1 (en) * | 2017-09-18 | 2019-03-21 | 惠科股份有限公司 | Display device |
| US10921647B2 (en) | 2017-09-18 | 2021-02-16 | HKC Corporation Limited | Display device |
| US10928676B2 (en) | 2017-09-18 | 2021-02-23 | HKC Corporation Limited | Display device |
| CN108287389A (en) * | 2018-02-24 | 2018-07-17 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN108848239A (en) * | 2018-04-19 | 2018-11-20 | Oppo广东移动通信有限公司 | Breath light component and electronic device |
| CN108848239B (en) * | 2018-04-19 | 2020-08-07 | Oppo广东移动通信有限公司 | Breathing lamp assembly and electronic device |
| CN110211488A (en) * | 2019-05-09 | 2019-09-06 | 安徽赛迈特光电股份有限公司 | Quantum dot backlight and vehicle-carrying display screen with it |
| CN110211488B (en) * | 2019-05-09 | 2021-08-13 | 安徽赛迈特光电股份有限公司 | Quantum dot backlight and vehicle-mounted display screen with same |
| JP7467231B2 (en) | 2020-05-22 | 2024-04-15 | 株式会社ジャパンディスプレイ | Display device |
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