CN102478178A - Direct type ultrathin light emitting diode (LED) backlight module and display terminal - Google Patents
Direct type ultrathin light emitting diode (LED) backlight module and display terminal Download PDFInfo
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- CN102478178A CN102478178A CN2010105551341A CN201010555134A CN102478178A CN 102478178 A CN102478178 A CN 102478178A CN 2010105551341 A CN2010105551341 A CN 2010105551341A CN 201010555134 A CN201010555134 A CN 201010555134A CN 102478178 A CN102478178 A CN 102478178A
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Abstract
The invention is applied to the field of lighting, and provides a direct type ultrathin light emitting diode (LED) backlight module, which comprises a substrate loaded with a plurality of LED light sources, wherein a bottom reflection layer is arranged on the surface of the substrate except for the LED light sources. The direct type ultrathin LED backlight module is characterized in that a reflection plate is arranged in the light emergent direction of each LED light source; and a plurality of transmission units which are used for evenly distributing emergent light rays of the corresponding LED light source are arranged on each reflection plate. According to the direct type ultrathin LED backlight module, the reflection plate provided with the transmission units is arranged above each LED light source, and the light rays sent by the LED light sources can be evenly distributed, so emergent light with high degree of uniformity can be obtained; and meanwhile, the light rays are sent out by the transmission units after being reflected for multiple times, that the light emergent angle is enlarged, the light mixing distance is decreased, then the thickness of the whole device is reduced, and thereby the thickness of the system is decreased while the degree of uniformity of the emergent light of the system is increased and the thinness is realized.
Description
Technical field
The invention belongs to lighting field, relate in particular to a kind of straight-down negative ultra-thin LED module backlight and display terminal.
Background technology
With the develop rapidly of seeing dull and stereotyped Display Technique, planar lighting device is more and more widely the various demonstrations field that is used in also.As shown in Figure 1, existing straight-down negative ultra-thin LED module backlight mainly comprises led light source 1, load the substrate 2 of led light source, be positioned at the led light source top diffusion layer 4, be positioned at the reflecting layer, the end 3 of substrate surface and be positioned at the lateral reflection layer around the led light source.Diffusion through diffusion layer can improve and uniformity of light, still, owing to have aberration and luminance difference between the plurality of LEDs light source, even there is the diffuser plate with equal light action, still can cause the inhomogeneities of bright dipping to a certain extent; Simultaneously; In order to obtain uniform surface light source, to reserve enough distances (light mixing distance) between diffusion layer 4 and the led light source 1, light is fully mixed; To realize all effects of light; Otherwise dark lattice will appear in its exiting surface, because the existence of light mixing distance makes the thickness of whole device have to thicken.
Summary of the invention
The object of the present invention is to provide a kind of straight-down negative ultra-thin LED module backlight, it is big to be intended to solve traditional straight-down negative ultra-thin LED module thickness backlight, the uneven problem of bright dipping.
The present invention is achieved in that straight-down negative ultra-thin LED module backlight, comprises the substrate that is loaded with several led light sources, and the surface on the said substrate except that led light source is provided with reflecting layer, the end, is equipped with reflecting plate on the light direction of each led light source;
Be provided with several transmission units on each reflecting plate, be used for the emergent ray of said led light source is carried out uniform distribution.
Another object of the present invention is to provide a kind of display terminal, comprise a backlight module, said backlight module comprises above-mentioned straight-down negative ultra-thin LED module backlight.
The present invention is provided with the reflecting plate that has transmission units above each led light source, can carry out uniform distribution to the light that led light source sends, and obtains the emergent light of high evenness; Simultaneously, light has enlarged the light angle of emergence through repeatedly reflecting after transmission units penetrates, and light mixing distance is reduced, and then reduced the thickness of whole device, makes this system when improving outgoing light homogeneity, reduce thickness, has realized slimming.
Description of drawings
Fig. 1 is the cross-sectional view of existing straight-down negative ultra-thin LED module backlight;
Fig. 2 is the cross-sectional view of the straight-down negative ultra-thin LED module backlight that provides of first embodiment of the invention;
Fig. 3 is the plan structure sketch map of the reflecting plate that provides of first embodiment of the invention;
Fig. 4 is the cross-sectional view of the straight-down negative ultra-thin LED module backlight that provides of second embodiment of the invention;
Fig. 5 is the structural representation of the reflecting plate that provides of second embodiment of the invention;
Fig. 6 is the plan structure sketch map of the reflecting plate that provides of second embodiment of the invention;
Fig. 7 is the flat illumination system architecture sketch map that a plurality of modules that fourth embodiment of the invention provides are spliced.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of straight-down negative ultra-thin LED module backlight, and this system comprises the substrate that is loaded with several led light sources, and the surface on the substrate except that led light source is provided with reflecting layer, the end, is equipped with reflecting plate on the light direction of each led light source;
Each reflecting plate is equipped with several transmission units, is used for the emergent ray of said led light source is carried out uniform distribution.
The embodiment of the invention also provides a kind of display terminal, comprises a backlight module, and this backlight module comprises above-mentioned straight-down negative ultra-thin LED module backlight.
The embodiment of the invention is provided with the reflecting plate that has transmission units above each led light source, can carry out uniform distribution to the light that led light source sends, and obtains the emergent light of high evenness; Simultaneously, light has enlarged the light angle of emergence through repeatedly reflecting after transmission units penetrates, and light mixing distance is reduced, and then reduced the thickness of whole device, makes this system when improving outgoing light homogeneity, reduce thickness, has realized slimming.
The embodiment of the invention also provides a kind of display terminal, comprises a backlight module, and this backlight module comprises above-mentioned straight-down negative ultra-thin LED module backlight.
Below in conjunction with specific embodiment concrete realization of the present invention is described in detail:
Embodiment one:
Fig. 2 shows the cross-sectional view of the straight-down negative ultra-thin LED module backlight that first embodiment of the invention provides; Fig. 3 shows the plan structure sketch map of the reflecting plate that first embodiment of the invention provides; For the ease of explanation, only show the part relevant with the embodiment of the invention.
Tradition straight-down negative ultra-thin LED module backlight comprises several led light sources 1 that are loaded on the substrate 2; The surface of substrate 2 is provided with reflecting layer, the end 3 except the zone of led light source 1; Above led light source 1, be provided with diffusion layer 4; The equal light action of the light process diffusion layer 4 that light source 1 sends with light ejaculation uniformly, penetrates through diffusion layer 4 after the light that part is reflected by diffusion layer is reflected by reflecting layer, the end 3 again.
In the said lighting system,, in the flat luminous system of common LED a plurality of equally distributed led light sources need be set though diffusion layer 4 has diffusion; To reach the requirement of the brightness and the uniformity; But inevitably have aberration and luminance difference between each led light source, this makes that the emergent light of lighting device is still even inadequately, in order to solve the above problems; Present embodiment is the corresponding reflecting plate 5 that is provided with special construction above each led light source 1; Each reflecting plate 5 is provided with some transmission units 51, i.e. the slab construction formed by reflector space and regional transmission of this reflecting plate, wherein; Transmission units 51 is used for the light that penetrates through reflecting plate is carried out uniform distribution, makes emergent light intensity homogenising everywhere on the reflecting plate.The light that this structural design not only can make light source 1 send evenly distributes, but also can reduce the thickness of whole device, realizes the slimming of illuminator.
Please combine accompanying drawing 2 and 3, the transmission units 51 that is provided with on this reflecting plate 5 can be the through hole that is opened on the reflecting plate.The light that led light source 1 sends, a part is passed through hole and is directly penetrated; Another part light is reflected regional reflex on earth on the reflecting layer 3, and 3 reflections through reflecting layer, the end are again penetrated through through hole; Some light repeatedly reflects between reflector space and reflecting layer, the end, finally passes through hole and spreads out.
This through hole that principle is set is following: the light angle of emergence of led light source is in 120 ° usually, and most of light all concentrates in the very little solid angle, the closer to the central shaft of the outgoing beam of led light source; Light is close more; Brightness is high more, and more away from central shaft, light is sparse more; Light intensity is more little, and brightness is low more.According to these characteristics, the distribution of through hole is provided with as follows, purpose is that the luminous flux with emergent light carries out uniform distribution on reflecting plate.Central shaft with led light source 1 outgoing beam is a symmetry axis; On the reflecting plate corresponding, offer several through holes according to certain rules around this symmetry axis with it; These through holes are distributed about this symmetry axis symmetry or near symmetrical, and the closer to symmetry axis, through hole is sparse more; Away from symmetry axis, through hole is intensive more more.Be appreciated that size is big more if through hole is far away more apart from symmetry axis, they are the better effects if of light all.And the distribution of through hole does not need strictness to satisfy symmetrical structure, and certainly, its symmetrical degree is high more, and all light effect is just good more naturally.
After according to above-mentioned rule through hole being set; Near the outgoing beam central shaft high density light just can directly not penetrate through hole; But reflex on the reflecting layer, the end 3 through the reflector space of relatively large area; After the several times reflection through reflecting layer, the end and reflecting plate, penetrate through through hole again away from central shaft.Like this, because near the through hole the central shaft is less less, through hole on every side is more bigger; Make that emergent ray is redistributed; Use irradiating luminous flux on the entire emission plate by homogenising, and then improved the uniformity of emergent light, can form planar light source than high evenness.Be appreciated that on the basis of rational density proportioning, it is intensive more that through hole is provided with, the uniformity of emergent light is high more.When the interval of through hole and size reach enough little, can omit the diffusion layer above the reflecting plate fully.
In traditional LED flat illumination system; In order to obtain uniform surface light source, to reserve enough distances (light mixing distance) between diffusion layer 4 and the led light source 1, light is fully mixed; To realize all effects of light; Otherwise dark lattice will appear in its exiting surface, because the existence of light mixing distance makes the thickness of whole device have to thicken.And in the present embodiment,, make light through repeatedly penetrating by through hole again after the reflection owing to above led light source, be provided with reflecting plate, and its light angle of emergence increases, and light mixing distance reduces, and then has reduced the thickness of whole illuminator effectively.
In embodiments of the present invention; The density of through hole and size and power, rising angle and the led light source of led light source and the distance dependent between the reflecting plate in the practical operation, can be provided with the density and the size of through hole according to design experiences; The shape of through hole can be designed to various geometry as required; Also can be through the distance between fixed L ED light source and the reflecting plate, through the density and the size of software simulation, quantitative Analysis through hole, to realize the best light effect that goes out.
In embodiments of the present invention, reflecting plate 5 specifically can be through being fixed on support 6 support fixation on the substrate 2.
In embodiments of the present invention; The reflector space of reflecting plate 5 can lightweight material low by light transmittance, that reflectivity is high be processed, like PETG (PET), aluminium polychloride (PAC), Merlon (PC), polymethyl methacrylate (PMMA), aluminium foil etc.Perhaps through processing at the surface applied low-transmittance of lightweight material (like glass or plastics), the material of high reflectance.
Embodiment two:
Fig. 4 shows the cross-sectional view of the straight-down negative ultra-thin LED module backlight that second embodiment of the invention provides; Fig. 5 shows the structural representation of the reflecting plate that second embodiment of the invention provides; Fig. 6 shows the plan structure sketch map of the reflecting plate that second embodiment of the invention provides; For the ease of explanation, only show the part relevant with the embodiment of the invention.
In embodiments of the present invention; Transmission units 51 in the foregoing description can also be the light-passing board unit; This reflecting plate specifically can be made like this: in position, shape and the size of a high-transmission rate plate surface design transmission units 51, removing the surface-coated outside these regions, light-passing board unit or mounting one deck reflecting layer then in advance.The material in this reflecting layer can be the lightweight material that light transmittance is low, reflectivity is high, like PET, PAC, PC, PMMA, aluminium foil etc.This high-transmission rate sheet material can be for the lightweight material of high transmission rate, like glass or plastics.
The operation principle of the reflecting plate of being made up of through hole and reflector space in the reflecting plate of this structure and the foregoing description is identical.And the design of the density of light-passing board unit and size is same identical with the design principle of through hole in the foregoing description, repeats no more.And, at the outer surface of reflecting plate concave-convex micro-structure being set suitably, it has further disperse function to emergent light, can further increase its uniformity.
Embodiment three:
In embodiments of the present invention; Lateral reflection plate 7 can be set around led light source 1; This lateral reflection plate can be through the surface at light weight board the reflecting layer to be set to process, and the material in this reflecting layer can be the light material that PET, PAC, PC, aluminium foil etc. have the low-transmittance high reflectance.Lateral reflection plate 7 can carry out secondary reflection again with the light that passes through 3 reflections of reflecting plate 5 or reflecting layer, the end and come, and finally 51 penetrates through the printing opacity unit, light is repeatedly reflected and changes the direction of propagation.
As one embodiment of the present of invention, can also the top in reflecting layer further be provided with diffusion layer 4, specifically can this diffusion layer 4 be fixed on lateral reflection plate 7 tops, can further improve the outgoing uniformity of light through diffusion layer 4.
Embodiment four:
The structural representation of the LED flat illumination system that a plurality of modules that Fig. 7 shows fourth embodiment of the invention to be provided are spliced for the ease of explanation, only shows the part relevant with the embodiment of the invention.
As the bigger flat illumination system of area, can be to be spliced by the described LED flat illumination of a plurality of the foregoing descriptions system.When assembling; According to actual needs, a plurality of led light sources are arranged on the substrate, the reflecting plate described in the previous embodiment is set above each led light source; Form a standard module 8; Again a plurality of standard modules are stitched together, above spliced module, diffusion layer are set again, carry out follow-up assembly work again.By the illuminator that a plurality of standard modules are spliced, can avoid the problem of monolithic large-area substrates easy deformation or damage, can reduce the complexity of production technology greatly, and adopt this mode to assemble, be convenient to operation, can effectively increase work efficiency.
The present invention is provided with the reflecting plate that has transmission units above each led light source, can carry out uniform distribution to the light that led light source sends, and obtains the emergent light of high evenness; Simultaneously, light has enlarged the light angle of emergence through repeatedly reflecting after transmission units penetrates, and light mixing distance is reduced, and then reduced the thickness of whole device, makes this system when improving outgoing light homogeneity, reduce thickness, has realized slimming.Distribution density and size to transmission units rationally are provided with, and can effectively improve the outgoing uniformity of light.Around light source, lateral reflection plate is set, makes light repeatedly reflect, effectively improve the uniformity of light, and diffusion layer can be set up, uniformity of light with further the raising.Substrate, led light source and reflecting plate are formed standard module, more a plurality of standard modules are stitched together, form large-area flat illumination system, not only can make substrate not yielding, can also improve efficiency of assembling.
Above-mentioned straight-down negative ultra-thin LED module backlight is applicable in the flat illumination equipment, is used for the life illumination, also can be used as the backlight module of display floater, is installed in the display terminal (like television display screen, mobile phone screen, computer display etc.).
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. straight-down negative ultra-thin LED module backlight comprises the substrate that is loaded with several led light sources, and the surface on the said substrate except that led light source is provided with reflecting layer, the end, it is characterized in that, is equipped with reflecting plate on the light direction of each led light source;
Be provided with several transmission units on each reflecting plate, be used for the emergent ray of said led light source is carried out uniform distribution.
2. straight-down negative ultra-thin LED as claimed in claim 1 module backlight is characterized in that the transmission units on each reflecting plate distributes in such a way:
Near the density of the transmission units of led light source outgoing beam central shaft less than density away from the transmission units of said central shaft;
Near the size of the transmission units of the central shaft of led light source outgoing beam less than size away from the transmission units of said central shaft.
3. straight-down negative ultra-thin LED as claimed in claim 1 module backlight is characterized in that, described several transmission units are symmetrically distributed about the central shaft of said led light source outgoing beam.
4. straight-down negative ultra-thin LED as claimed in claim 1 module backlight is characterized in that each reflecting plate is all fixed through the support that an end is fixed on the said substrate.
5. straight-down negative ultra-thin LED as claimed in claim 1 module backlight is characterized in that, is provided with lateral reflection plate around said several led light sources.
6. straight-down negative ultra-thin LED as claimed in claim 1 module backlight is characterized in that the top of said reflecting plate is provided with diffusion layer.
7. like each described straight-down negative ultra-thin LED of claim 1 to 6 module backlight, it is characterized in that said transmission units is the through hole that is opened on the said reflecting plate.
8. like each described straight-down negative ultra-thin LED of claim 1 to 6 module backlight, it is characterized in that said reflecting plate is made up of a light-passing board and the reflecting layer that has some regional transmissions that is arranged at said light-passing board surface; Said transmission units is the part of said reflecting plate corresponding to said regional transmission.
9. straight-down negative ultra-thin LED as claimed in claim 8 module backlight is characterized in that the outer surface of said transmission units is provided with concave-convex micro-structure.
10. a display terminal comprises a backlight module, it is characterized in that, said backlight module comprises each described straight-down negative ultra-thin LED of claim 1 to 9 module backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105551341A CN102478178A (en) | 2010-11-23 | 2010-11-23 | Direct type ultrathin light emitting diode (LED) backlight module and display terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105551341A CN102478178A (en) | 2010-11-23 | 2010-11-23 | Direct type ultrathin light emitting diode (LED) backlight module and display terminal |
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| CN102478178A true CN102478178A (en) | 2012-05-30 |
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| CN2010105551341A Pending CN102478178A (en) | 2010-11-23 | 2010-11-23 | Direct type ultrathin light emitting diode (LED) backlight module and display terminal |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047587A (en) * | 2012-12-28 | 2013-04-17 | 深圳市伊藤合成科技有限公司 | Uniformly light-emitting reflective backlight source |
| CN103353081A (en) * | 2013-08-05 | 2013-10-16 | 宁波燎原灯具股份有限公司 | Light-emitting diode (LED) garden lamp |
| CN103604092A (en) * | 2013-11-19 | 2014-02-26 | 惠州市华瑞光源科技有限公司 | Television, inner optical membrane, die for inner optical membrane, and manufacturing method of inner optical membrane |
| CN103604068A (en) * | 2013-11-19 | 2014-02-26 | 惠州市华瑞光源科技有限公司 | Television and direct-lit backlight module |
| CN103760718A (en) * | 2013-11-19 | 2014-04-30 | 惠州市华瑞光源科技有限公司 | Television and display device |
| CN104344250A (en) * | 2013-08-08 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Light-emitting diode light source module |
| CN104712957A (en) * | 2013-12-16 | 2015-06-17 | 富泰华精密电子（郑州）有限公司 | Direct type backlight module |
| CN107355691A (en) * | 2017-08-26 | 2017-11-17 | 重庆门里科技有限公司 | A kind of ultra-thin face shape light-source structure |
| CN107507438A (en) * | 2017-08-23 | 2017-12-22 | 庄秋瑶 | Adaptive projection traffic lights |
| CN109283745A (en) * | 2018-11-29 | 2019-01-29 | 厦门天马微电子有限公司 | A kind of down straight aphototropism mode set and display device |
| CN109946873A (en) * | 2017-12-20 | 2019-06-28 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN112987392A (en) * | 2019-12-16 | 2021-06-18 | 中强光电股份有限公司 | Light source module and display device |
| CN113138494A (en) * | 2021-04-07 | 2021-07-20 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113589588A (en) * | 2021-07-20 | 2021-11-02 | 武汉华星光电技术有限公司 | Backlight module and display module |
| CN113835263A (en) * | 2020-06-08 | 2021-12-24 | 华为技术有限公司 | Direct type backlight module, display and terminal equipment |
| CN114089561A (en) * | 2020-08-24 | 2022-02-25 | 海信视像科技股份有限公司 | Display device |
| CN115136066A (en) * | 2020-02-18 | 2022-09-30 | 富士胶片株式会社 | Light source unit, display device, and light source unit manufacturing apparatus |
| US11703716B2 (en) | 2020-04-28 | 2023-07-18 | Hisense Visual Technology Co., Ltd. | Display apparatus |
| US11796859B2 (en) | 2020-03-25 | 2023-10-24 | Hisense Visual Technology Co., Ltd. | Display apparatus with micro light emitting diode light board |
| US11822183B2 (en) | 2020-03-25 | 2023-11-21 | Hisense Visual Technology Co., Ltd. | Display apparatus |
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| CN201954377U (en) * | 2010-11-23 | 2011-08-31 | 深圳帝光电子有限公司 | Direct illumination-type ultrathin LED backlight module and display terminal |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047587A (en) * | 2012-12-28 | 2013-04-17 | 深圳市伊藤合成科技有限公司 | Uniformly light-emitting reflective backlight source |
| CN103353081A (en) * | 2013-08-05 | 2013-10-16 | 宁波燎原灯具股份有限公司 | Light-emitting diode (LED) garden lamp |
| CN103353081B (en) * | 2013-08-05 | 2015-07-22 | 宁波燎原灯具股份有限公司 | Light-emitting diode (LED) garden lamp |
| CN104344250A (en) * | 2013-08-08 | 2015-02-11 | 鸿富锦精密工业（深圳）有限公司 | Light-emitting diode light source module |
| CN103604092A (en) * | 2013-11-19 | 2014-02-26 | 惠州市华瑞光源科技有限公司 | Television, inner optical membrane, die for inner optical membrane, and manufacturing method of inner optical membrane |
| CN103604068A (en) * | 2013-11-19 | 2014-02-26 | 惠州市华瑞光源科技有限公司 | Television and direct-lit backlight module |
| CN103760718A (en) * | 2013-11-19 | 2014-04-30 | 惠州市华瑞光源科技有限公司 | Television and display device |
| CN104712957A (en) * | 2013-12-16 | 2015-06-17 | 富泰华精密电子（郑州）有限公司 | Direct type backlight module |
| CN107507438B (en) * | 2017-08-23 | 2020-06-09 | 南京溧水高新创业投资管理有限公司 | Self-adaptive projection type traffic light |
| CN107507438A (en) * | 2017-08-23 | 2017-12-22 | 庄秋瑶 | Adaptive projection traffic lights |
| CN107355691A (en) * | 2017-08-26 | 2017-11-17 | 重庆门里科技有限公司 | A kind of ultra-thin face shape light-source structure |
| CN109946873A (en) * | 2017-12-20 | 2019-06-28 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN109283745B (en) * | 2018-11-29 | 2022-03-01 | 厦门天马微电子有限公司 | Direct type backlight module and display device |
| CN109283745A (en) * | 2018-11-29 | 2019-01-29 | 厦门天马微电子有限公司 | A kind of down straight aphototropism mode set and display device |
| CN112987392A (en) * | 2019-12-16 | 2021-06-18 | 中强光电股份有限公司 | Light source module and display device |
| CN115136066B (en) * | 2020-02-18 | 2024-03-05 | 富士胶片株式会社 | Light source unit, display device, and light source unit manufacturing apparatus |
| CN115136066A (en) * | 2020-02-18 | 2022-09-30 | 富士胶片株式会社 | Light source unit, display device, and light source unit manufacturing apparatus |
| US11796859B2 (en) | 2020-03-25 | 2023-10-24 | Hisense Visual Technology Co., Ltd. | Display apparatus with micro light emitting diode light board |
| US11822183B2 (en) | 2020-03-25 | 2023-11-21 | Hisense Visual Technology Co., Ltd. | Display apparatus |
| US11703716B2 (en) | 2020-04-28 | 2023-07-18 | Hisense Visual Technology Co., Ltd. | Display apparatus |
| CN113835263A (en) * | 2020-06-08 | 2021-12-24 | 华为技术有限公司 | Direct type backlight module, display and terminal equipment |
| CN114089561A (en) * | 2020-08-24 | 2022-02-25 | 海信视像科技股份有限公司 | Display device |
| CN113138494A (en) * | 2021-04-07 | 2021-07-20 | 武汉华星光电技术有限公司 | Backlight module and display device |
| CN113589588A (en) * | 2021-07-20 | 2021-11-02 | 武汉华星光电技术有限公司 | Backlight module and display module |
| CN113589588B (en) * | 2021-07-20 | 2023-12-01 | 武汉华星光电技术有限公司 | Backlight module and display module |
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Application publication date: 20120530 |