CN202676941U - Light guide plate, lateral backlight module and double-face display device - Google Patents
Light guide plate, lateral backlight module and double-face display device Download PDFInfo
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- CN202676941U CN202676941U CN 201220364367 CN201220364367U CN202676941U CN 202676941 U CN202676941 U CN 202676941U CN 201220364367 CN201220364367 CN 201220364367 CN 201220364367 U CN201220364367 U CN 201220364367U CN 202676941 U CN202676941 U CN 202676941U
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- guide plate
- light guide
- exiting surface
- described light
- display device
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Abstract
The embodiment of the utility model discloses a light guide plate, a lateral backlight module and a double-face display device, relating to the technical field of display. The utility model solves the problem that the cost is high because the traditional lateral backlight module is single-side light emission and two backlight modules are needed if light emission to both sides needs to be satisfied. The light guide plate comprises a first light emitting face, a second light emitting face arranged in relative to the first light emitting face and four side faces, and net points are arranged on the first light emitting face and the second emitting face. The light guide plate can be applied to a product with the lateral backlight module, such as liquid crystal display device.
Description
Technical field
The utility model relates to the display technique field, relates in particular to a kind of light guide plate, side entrance back module and double-side display device.
Background technology
Liquid crystal indicator needing to be widely used in the place of Information Communication, such as market, bank, hospital etc.Generally speaking, liquid crystal indicator need to rely on the side entrance back module provides sufficient light source with being evenly distributed to reach the function of demonstration.
A kind of side entrance back module of prior art as shown in Figure 1, the side entrance back module comprises backboard 11 and the housing 12 that connects backboard 11 4 limits, backboard 11 is used for the parts in the carrying side entering type backlight module, and housing 12 is used for the fixedly interior parts of side entering type backlight module; Be coated with end reflector plate 13 on the backboard 11, be coated with light guide plate 14 on the end reflector plate 13, on light guide plate 14, and the side near end reflector plate 13 is provided with a large amount of sites 141, side in four limits of light guide plate 14 or many sides are provided with a plurality of light sources 15, light source 15 is arranged in the housing 12, and the offside that a large amount of sites 141 1 sides are set in light guide plate 14 is provided with diffusion barrier 16, is provided with brightness enhancement film 17 at diffusion barrier 16.The luminescence process of side entrance back module is: a plurality of light sources 15 emit beam to light guide plate 14, part light directly outwards penetrates by light guide plate 14, diffusion barrier 16, brightness enhancement film 17, another part light is mapped on a large amount of sites 141 on the light guide plate 14 by light guide plate 14, through the reflection of site 141, outwards penetrate by light guide plate 14, diffusion barrier 16, brightness enhancement film 17.
In the process that realizes the utility model embodiment, the inventor finds that there are the following problems at least in the prior art: the backlight module of prior art is one-sided demonstration, in actual applications, can both observe the liquid crystal indicator Content Restriction if satisfy the people of both sides, then need two liquid crystal display are put together dorsad and carry out the propagation of identical content, improved like this demonstration cost.
The utility model content
The utility model provides light guide plate, side entrance back module and double-side display device, and being used for solving existing side entrance back module is one-sided bright dipping, if will satisfy to the both sides bright dipping, then needs two backlight modules, the problem that cost is higher.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of light guide plate, the second exiting surface that comprises the first exiting surface, is oppositely arranged with the first exiting surface, and four sides are provided with the site on described the first exiting surface and described the second exiting surface.
Further, described light guide plate the first exiting surface is arranged different with the dot density of described light guide plate the second exiting surface.In the light guide plate technology, described site is used for reflection ray and goes out light guide plate, and that the density of described site is arranged is more intensive, the light of described site reflection is more intensive, and then the light intensity of reflection is higher, therefore by at the first exiting surface and the second exiting surface the site that different densities is arranged being set, can make the emitting brightness of two faces different, satisfy two different demands in the face of light guide plate luminance.
Perhaps, the site of described light guide plate the first exiting surface and described light guide plate the second exiting surface varies in size.In light guide plate, the size of described site within the specific limits, if the site is larger, the light of described site reflection is more, and then the light intensity of certain area internal reflection is higher, therefore by the site of different sizes is set at the first exiting surface and the second exiting surface, can make the emitting brightness of two faces different, satisfy two different demands in the face of light guide plate luminance.
A kind of side entrance back module comprises above-mentioned light guide plate, and is arranged at the light source outside at least one side in four sides of described light guide plate.
Preferably, outside four sides of described light guide plate, be provided with light source.By being provided with light source outside four sides, can be so that the brightness maximization of described side entrance back module.
Further, the dot density of described light guide plate the first exiting surface and described light guide plate the second exiting surface successively decreases by around the mind-set in the light guide plate.Because dot density is more intensive, the light of its reflection is more intensive, and when described light guide plate dot density everywhere is identical, because the light source of four sides of distance, the center of described light guide plate is far away, thereby the center can be darker, therefore successively decreases to reach two uniform effects of face bright dipping of described light guide plate all around by mind-set in the light guide plate by the dot density of described light guide plate the first exiting surface and described light guide plate the second exiting surface.
Further, be disposed with the first diffusion barrier and the first brightness enhancement film at described light guide plate the first exiting surface, be disposed with the second diffusion barrier and the second brightness enhancement film at described light guide plate the second exiting surface.By described the first diffusion barrier so that the bright dipping of described the first exiting surface is more even, by described the first brightness enhancement film so that the emitting brightness of described the first exiting surface increase; In like manner, by described the second diffusion barrier so that the bright dipping of described the second exiting surface is more even, by described the second brightness enhancement film so that the emitting brightness of described the second exiting surface increase.
Further, between described light guide plate the first exiting surface and described the first diffusion barrier, be provided with the first saturating anti-film, and be provided with the second saturating anti-film between described light guide plate the second exiting surface and described the second diffusion barrier.The described first saturating anti-film and the second saturating anti-film reflect the light in the certain angle scope, and with the transmission of another part light, like this so that the light that reflects back enters light guide plate carries out secondary reflection again and broken up, and the diffusion ion of the light of another part transmission by the first saturating anti-film and the second saturating anti-film effectively spread, so that the light that sends from the described first saturating anti-film and the second saturating anti-film is more even.
A kind of double-side display device comprises above-mentioned side entrance back module.
Further, described double-side display device also comprises two display panels that lay respectively at described side entrance back module both sides.Like this so that described double-side display device show to both direction by described two display panels.
Preferably, described display panel is display panels.Adopt display panels, can make described two-direction display showing device more frivolous, and power consumption is lower.
Further, described double-side display device also comprises housing.By described housing is set, thereby can fix each tunic material and display panel of described double-side display device inside.
The light guide plate that the utility model embodiment provides, side entrance back module and double-side display device, because described light guide plate, comprise the first exiting surface, the second exiting surface that is oppositely arranged with the first exiting surface, and four sides, be provided with the site on described the first exiting surface and described the second exiting surface, so that the light that the light source that arranges outside at least one side in four sides of described light guide plate sends is during by light guide plate, can reflect by the site on two faces, thereby can be so that all energy bright dippings of two faces of a backlight module, to satisfy in the prior art to the both sides bright dipping if solved, then need two backlight modules, the problem that cost is higher.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the side-looking diagrammatic cross-section of a kind of side entrance back module of prior art;
The side-looking diagrammatic cross-section one of the light guide plate that Fig. 2 provides for the utility model embodiment;
The side-looking diagrammatic cross-section two of the light guide plate that Fig. 3 provides for the utility model embodiment;
The side-looking diagrammatic cross-section three of the light guide plate that Fig. 4 provides for the utility model embodiment;
The side-looking diagrammatic cross-section one of the side entrance back module that Fig. 5 provides for the utility model embodiment;
The schematic diagram of the side entrance back module that Fig. 6 provides for the utility model embodiment;
The side-looking diagrammatic cross-section two of the side entrance back module that Fig. 7 provides for the utility model embodiment;
The side-looking diagrammatic cross-section one of the double-side display device that Fig. 8 provides for the embodiment of the invention;
The side-looking diagrammatic cross-section two of the double-side display device that Fig. 9 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
For the advantage that makes technical solutions of the utility model is clearer, below in conjunction with drawings and Examples the utility model is elaborated.
The light guide plate that the utility model embodiment provides, as shown in Figure 2, be provided with site 24 on the second exiting surface 22 that described light guide plate comprises the first exiting surface 21, is oppositely arranged with the first exiting surface 21, and four sides 23, described the first exiting surface 21 and described the second exiting surface 22.
The light guide plate that the utility model embodiment provides, because described light guide plate, the second exiting surface that comprises the first exiting surface, is oppositely arranged with the first exiting surface, and four sides, be provided with the site on described the first exiting surface and described the second exiting surface, so that when having light to pass through light guide plate, can reflect by the site on two faces, thereby can be so that all energy bright dippings of two faces of a backlight module, to satisfy in the prior art to the both sides bright dipping if solved, then need two backlight modules, the problem that cost is higher.
Further, as shown in Figure 3, site 24 density of described light guide plate the first exiting surface 21 and described light guide plate the second exiting surface 22 are arranged different.In the light guide plate technology, described site is used for reflection ray and goes out light guide plate, and that the density of described site is arranged is more intensive, the light of described site reflection is more intensive, and then the light intensity of reflection is higher, therefore by at the first exiting surface and the second exiting surface the site that different densities is arranged being set, can make the emitting brightness of two faces different, two different demands in the face of light guide plate luminance have been satisfied, for example when light guide plate is carried out two-sided bright dipping, one side requires emitting brightness higher (such as this face over against window, the not high meeting of emitting brightness cause show unclear), and another side requires power saving, then can adopt the dot density of described two faces difference of arranging to reach the emitting brightness difference.
Perhaps, as shown in Figure 4, the site 24 of described light guide plate the first exiting surface 21 and described light guide plate the second exiting surface 22 varies in size.In light guide plate, the size of described site within the specific limits, if the site is larger, the light of described site reflection is more, and then the light intensity of certain area internal reflection is higher, therefore by the site of different sizes is set at the first exiting surface and the second exiting surface, can make the emitting brightness of two faces different, satisfy two different demands in the face of light guide plate luminance.
The side entrance back module that the utility model embodiment provides, as shown in Figure 5, described side entrance back module comprises above-mentioned light guide plate 31, and is arranged at the light source 32 outside at least one side in 31 4 sides 23 of described light guide plate.
Concrete, described light source 32 can be light emitting diode or cathode fluorescent tube, but not only is confined to this, and other can be applied in light source in the backlight module all in protection domain of the present utility model.
What deserves to be explained is, Fig. 5 only side in four sides 23 of light guide plate 31 is provided with light source and sets forth as example, and the mode that other many sides are provided with light source also in protection domain of the present utility model, is not construed as limiting herein.
The side entrance back module that the utility model embodiment provides, because described side entrance back module comprises described light guide plate and is arranged at the light source outside at least one side in four sides of described light guide plate, described light guide plate comprises the first exiting surface, the second exiting surface that is oppositely arranged with the first exiting surface, be provided with the site on described the first exiting surface and described the second exiting surface, so that the light that the light source that arranges outside at least one side in four sides of described light guide plate sends is during by light guide plate, can reflect by the site on two faces, thereby can be so that all energy bright dippings of two faces of a backlight module, to satisfy in the prior art to the both sides bright dipping if solved, then need two backlight modules, the problem that cost is higher.
Preferably, as shown in Figure 6, outside four sides 23 of described light guide plate 31, be provided with light source 32.By being provided with light source outside four sides, can be so that the brightness maximization of described side entrance back module.
Further, as shown in Figure 6, the dot density of described light guide plate 31 first exiting surfaces 21 and described light guide plate the second exiting surface 22 successively decreases by around the mind-set in the light guide plate 31.Because dot density is more intensive, the light of its reflection is more intensive, and when described light guide plate dot density everywhere is identical, because the light source of four sides of distance, the center of described light guide plate is far away, thereby the center can be darker, therefore successively decreases to reach two uniform effects of face bright dipping of described light guide plate all around by mind-set in the light guide plate by the dot density of described light guide plate the first exiting surface and described light guide plate the second exiting surface.
What deserves to be explained is, Fig. 6 has only represented the first exiting surface 21 of light guide plate 31, and the structure of the first exiting surface 21 that represents among the structure of described the second exiting surface 22 and Fig. 6 is identical, repeats no more herein.
Further, as shown in Figure 7, be disposed with the first diffusion barrier 33 and the first brightness enhancement film 34 at described light guide plate 31 first exiting surfaces 21, be disposed with the second diffusion barrier 35 and the second brightness enhancement film 36 at described light guide plate 31 second exiting surfaces 22.By described the first diffusion barrier so that the bright dipping of described the first exiting surface is more even, by described the first brightness enhancement film so that the emitting brightness of described the first exiting surface increase; In like manner, by described the second diffusion barrier so that the bright dipping of described the second exiting surface is more even, by described the second brightness enhancement film so that the emitting brightness of described the second exiting surface increase.
Further, as shown in Figure 7, between described light guide plate 31 first exiting surfaces 21 and described the first diffusion barrier 33, be provided with the first saturating anti-film 37, and be provided with the second saturating anti-film 38 between described light guide plate 31 second exiting surfaces 22 and described the second diffusion barrier 35.The described first saturating anti-film and the second saturating anti-film reflect the light in the certain angle scope, and with the transmission of another part light, like this so that the light that reflects back enters light guide plate carries out secondary reflection again and broken up, and the diffusion ion of the light of another part transmission by the first saturating anti-film and the second saturating anti-film effectively spread, so that the light that sends from the described first saturating anti-film and the second saturating anti-film is more even.Concrete, the described first saturating anti-film and the light transmission capacity of the second saturating anti-film and the ratio of volume reflection are called inverse ratio, and the size of described inverse ratio can set in advance according to the actual environment of using.
The double-side display device that the embodiment of the invention provides comprises above-mentioned side entrance back module.
The double-side display device that the utility model embodiment provides, because described double-side display device comprises above-mentioned side entrance back module, described side entrance back module comprises described light guide plate and is arranged at the light source outside at least one side in four sides of described light guide plate, described light guide plate comprises the first exiting surface, the second exiting surface that is oppositely arranged with the first exiting surface, be provided with the site on described the first exiting surface and described the second exiting surface, so that the light that the light source that arranges outside at least one side in four sides of described light guide plate sends is during by light guide plate, can reflect by the site on two faces, thereby can be so that all energy bright dippings of two faces of a backlight module, to satisfy in the prior art to the both sides bright dipping if solved, then need two backlight modules, the problem that cost is higher.
Further, as shown in Figure 8, described double-side display device also comprises two display panels 42 that lay respectively at described side entrance back module 41 both sides.Like this so that described double-side display device show to both direction by described two display panels.
Preferably, described display panel is display panels.Adopt display panels, can make described two-direction display showing device more frivolous, and power consumption is lower.
Further, as shown in Figure 9, described double-side display device also comprises housing 43.By described housing is set, thereby can fix each tunic material and display panel of described double-side display device inside.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (12)
1. a light guide plate is characterized in that, the second exiting surface that comprises the first exiting surface, is oppositely arranged with the first exiting surface, and four sides are provided with the site on described the first exiting surface and described the second exiting surface.
2. each described light guide plate according to claim 1 is characterized in that, described light guide plate the first exiting surface is arranged different with the dot density of described light guide plate the second exiting surface.
3. each described light guide plate according to claim 1 is characterized in that, the site of described light guide plate the first exiting surface and described light guide plate the second exiting surface varies in size.
4. a side entrance back module is characterized in that, comprises each described light guide plate of claim 1-3, and is arranged at the light source outside at least one side in four sides of described light guide plate.
5. side entrance back module according to claim 4 is characterized in that, is provided with light source outside four sides of described light guide plate.
6. side entrance back module according to claim 5 is characterized in that, the dot density of described light guide plate the first exiting surface and described light guide plate the second exiting surface successively decreases by around the mind-set in the light guide plate.
7. each described side entrance back module according to claim 4-6, it is characterized in that, be disposed with the first diffusion barrier and the first brightness enhancement film at described light guide plate the first exiting surface, be disposed with the second diffusion barrier and the second brightness enhancement film at described light guide plate the second exiting surface.
8. side entrance back module according to claim 7, it is characterized in that, between described light guide plate the first exiting surface and described the first diffusion barrier, be provided with the first saturating anti-film, and be provided with the second saturating anti-film between described light guide plate the second exiting surface and described the second diffusion barrier.
9. a double-side display device is characterized in that, comprises each described side entrance back module of claim 4 to 8.
10. double-side display device according to claim 9 is characterized in that, also comprises two display panels that lay respectively at described side entrance back module both sides.
11. double-side display device according to claim 10 is characterized in that, described display panel is display panels.
12. according to claim 10 or 11 described double-side display devices, it is characterized in that, also comprise housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364367 CN202676941U (en) | 2012-07-25 | 2012-07-25 | Light guide plate, lateral backlight module and double-face display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364367 CN202676941U (en) | 2012-07-25 | 2012-07-25 | Light guide plate, lateral backlight module and double-face display device |
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| Publication Number | Publication Date |
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| CN202676941U true CN202676941U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220364367 Expired - Lifetime CN202676941U (en) | 2012-07-25 | 2012-07-25 | Light guide plate, lateral backlight module and double-face display device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728668A (en) * | 2013-12-19 | 2015-06-24 | 三星显示有限公司 | Backlight unit and display apparatus having the same |
| CN105135363A (en) * | 2015-08-31 | 2015-12-09 | 创维液晶器件(深圳)有限公司 | Diffusion plate, backlight module and display equipment |
| CN105223719A (en) * | 2015-10-19 | 2016-01-06 | 深圳市华星光电技术有限公司 | Double-sided liquid crystal display device and electronic equipment |
| CN106292044A (en) * | 2015-06-01 | 2017-01-04 | 凌晖科技股份有限公司 | Double-sided display |
| CN106338861A (en) * | 2016-10-28 | 2017-01-18 | 奥英光电（苏州）有限公司 | The backlight module and liquid crystal display |
| WO2017152454A1 (en) * | 2016-03-11 | 2017-09-14 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and double-surface display device |
| CN108139619A (en) * | 2015-10-23 | 2018-06-08 | 株式会社 V 技术 | Light irradiation device |
| CN108230905A (en) * | 2018-01-02 | 2018-06-29 | 京东方科技集团股份有限公司 | A kind of display screen and display device |
| CN108445575A (en) * | 2018-02-24 | 2018-08-24 | 京东方科技集团股份有限公司 | Light guide plate and preparation method thereof, backlight module, display module |
| CN110161755A (en) * | 2019-06-11 | 2019-08-23 | 江苏毅昌科技有限公司 | A kind of backlight module and liquid crystal display device |
| CN112596147A (en) * | 2020-12-18 | 2021-04-02 | 凯盛科技股份有限公司蚌埠华益分公司 | Nano light guide plate, method for preparing nano light guide plate and display device |
| CN112764272A (en) * | 2021-02-09 | 2021-05-07 | 捷开通讯(深圳)有限公司 | Display module and display device |
| CN113741085A (en) * | 2021-08-31 | 2021-12-03 | 惠科股份有限公司 | Double-sided display panel |
| CN117055266A (en) * | 2023-10-12 | 2023-11-14 | 惠科股份有限公司 | Backlight module, preparation method thereof and liquid crystal display device |
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2012
- 2012-07-25 CN CN 201220364367 patent/CN202676941U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728668A (en) * | 2013-12-19 | 2015-06-24 | 三星显示有限公司 | Backlight unit and display apparatus having the same |
| CN106292044A (en) * | 2015-06-01 | 2017-01-04 | 凌晖科技股份有限公司 | Double-sided display |
| CN105135363A (en) * | 2015-08-31 | 2015-12-09 | 创维液晶器件(深圳)有限公司 | Diffusion plate, backlight module and display equipment |
| CN105223719A (en) * | 2015-10-19 | 2016-01-06 | 深圳市华星光电技术有限公司 | Double-sided liquid crystal display device and electronic equipment |
| CN108139619A (en) * | 2015-10-23 | 2018-06-08 | 株式会社 V 技术 | Light irradiation device |
| WO2017152454A1 (en) * | 2016-03-11 | 2017-09-14 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and double-surface display device |
| CN106338861A (en) * | 2016-10-28 | 2017-01-18 | 奥英光电（苏州）有限公司 | The backlight module and liquid crystal display |
| CN108230905A (en) * | 2018-01-02 | 2018-06-29 | 京东方科技集团股份有限公司 | A kind of display screen and display device |
| CN108445575A (en) * | 2018-02-24 | 2018-08-24 | 京东方科技集团股份有限公司 | Light guide plate and preparation method thereof, backlight module, display module |
| US10830940B2 (en) | 2018-02-24 | 2020-11-10 | Boe Technology Group Co., Ltd. | Light guide plate and manufacturing method thereof, backlight assembly, and display assembly |
| CN110161755A (en) * | 2019-06-11 | 2019-08-23 | 江苏毅昌科技有限公司 | A kind of backlight module and liquid crystal display device |
| CN112596147A (en) * | 2020-12-18 | 2021-04-02 | 凯盛科技股份有限公司蚌埠华益分公司 | Nano light guide plate, method for preparing nano light guide plate and display device |
| CN112764272A (en) * | 2021-02-09 | 2021-05-07 | 捷开通讯(深圳)有限公司 | Display module and display device |
| CN113741085A (en) * | 2021-08-31 | 2021-12-03 | 惠科股份有限公司 | Double-sided display panel |
| CN113741085B (en) * | 2021-08-31 | 2022-06-07 | 惠科股份有限公司 | Double-sided display panel |
| CN117055266A (en) * | 2023-10-12 | 2023-11-14 | 惠科股份有限公司 | Backlight module, preparation method thereof and liquid crystal display device |
| CN117055266B (en) * | 2023-10-12 | 2024-02-09 | 惠科股份有限公司 | Backlight module, preparation method thereof and liquid crystal display device |
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