CN202598316U - Direct type backlight module and liquid crystal display device - Google Patents
Direct type backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN202598316U CN202598316U CN 201220197432 CN201220197432U CN202598316U CN 202598316 U CN202598316 U CN 202598316U CN 201220197432 CN201220197432 CN 201220197432 CN 201220197432 U CN201220197432 U CN 201220197432U CN 202598316 U CN202598316 U CN 202598316U
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- prismatic lens
- mode set
- light source
- aphototropism mode
- straight aphototropism
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Abstract
The utility model discloses a direct type backlight module and a liquid crystal display device. The direct type backlight module comprises a back plate, a light source, a lower prismatic lens and an upper prismatic lens, the lower prismatic lens is used for scattering light rays emitted by the light source, the upper prismatic lens is used for converging light rays scattered by the lower prismatic lens to form parallel lights, the light source, the upper prismatic lens and the lower prismatic lens are arranged in a hollow cavity formed by bending the back plate, and the lower prismatic lens is located between the light source and the upper prismatic lens. According to the direct type backlight module and the liquid crystal display device, the back plate, the light source, the lower prismatic lens and the upper prismatic lens are utilized, after the lights emitted by the light source are scattered by the lower prismatic lens, the scattered light rays are converged by the upper prismatic lens to form the parallel lights, then the parallel lights are emitted, the light emitting area of the light source is increased on the premise that a few of light source is used, and the competitiveness of products on the market is improved.
Description
Technical field
The utility model relates to module backlight, particularly a kind of down straight aphototropism mode set and liquid crystal display.
Background technology
The Along with people's growth in the living standard, the LCD TV popularity rate is increasingly high.The module backlight of LCD TV is divided into side entrance back module and down straight aphototropism mode set, and wherein, down straight aphototropism mode set is generally used for large-sized LCD.
Along with the luminous efficiency raising of LED, LED number of module backlight the inside is also fewer and feweri, and light-emitting area also can reduce thereupon but LED number reduces simultaneously.Industry is mainly through adopting LGP at present; The light that a small amount of LED is sent is converted into area source, though this structure has reduced the quantity of LED, has increased the weight of the cost and the module backlight of LGP; Make that the cost of product is high, thereby make product lose the market competitiveness.
Summary of the invention
In view of the weak point of above-mentioned prior art, the purpose of the utility model is to provide a kind of down straight aphototropism mode set and liquid crystal display, can under the prerequisite of using less quantity of light source, increase the light-emitting area of light source.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of down straight aphototropism mode set, the light that comprise backboard, light source, is used for that said light source is sent are carried out the following prismatic lens of scattering and are used for the said light of prismatic lens scattering is down pooled the last prismatic lens of directional light; Said light source, go up prismatic lens and said prismatic lens down and be arranged in the cavity that said backboard is bent to form, and said prismatic lens down is between said light source and last prismatic lens.
In the described down straight aphototropism mode set; The prism facets of said prismatic lens down is towards light source; The said prism facets backlight that goes up prismatic lens, and said interval first preset distance between prismatic lens and the following prismatic lens, interval second preset distance between following prismatic lens and the light source gone up.
In the described down straight aphototropism mode set, also comprise reflector plate, said reflector plate is attached on the backboard.
In the described down straight aphototropism mode set, comprise also being used for the said glue frame of going up prismatic lens and following prismatic lens of heavy duty that said glue frame is arranged on the reflector plate.
In the described down straight aphototropism mode set, on said prismatic lens above, or between prismatic lens and the following prismatic lens, perhaps be provided with diffusion sheet between time prismatic lens and the reflector plate.
In the described down straight aphototropism mode set, the length of said prismatic lens down is less than last prismatic lens length.
In the described down straight aphototropism mode set,, said first preset distance is not less than 30mm, and said second preset distance is 25-35mm.
In the described down straight aphototropism mode set, the said angle that goes up the prism of prismatic lens is 80 °-100 °, and the said angle of the prism of prismatic lens down should be 80 °-100 ° mutually.
In the described down straight aphototropism mode set, the angle of the prism of last prismatic lens is 90 °, and the said angle of the prism of prismatic lens down should be 90 ° mutually.
A kind of liquid crystal display; It comprises above-mentioned down straight aphototropism mode set; And display panels and the preceding frame that is used for fixing said down straight aphototropism mode set, said preceding frame is connected with the backboard of down straight aphototropism mode set, and said display panels is between down straight aphototropism mode set and preceding frame.
Compared to prior art; A kind of down straight aphototropism mode set and liquid crystal display that the utility model provides, are gone up prismatic lens and following prismatic lens at backboard, light source, after the light scattering that following prismatic lens sends light source; Through last prismatic lens scattered beam is pooled parallel light emergence; Realized using under the prerequisite of less light source, increased the light-emitting area of light source, improved the competitiveness of product on market.
Description of drawings
Fig. 1 is the cross section structure sketch map of the utility model down straight aphototropism mode set.
Fig. 2 is the light scattering principle sketch map of following prismatic lens in the utility model down straight aphototropism mode set.
Fig. 3 converges principle schematic for the light of going up prismatic lens in the utility model down straight aphototropism mode set.
The specific embodiment
The utility model provides down straight aphototropism mode set and liquid crystal display, for purpose, technical scheme and the effect that makes the utility model is clearer, clear and definite, below develops simultaneously embodiment to the utility model further explain with reference to accompanying drawing.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also Fig. 1, the down straight aphototropism mode set that the utility model provides comprises backboard 101, light source 102, reflector plate 103, goes up prismatic lens 104, following prismatic lens 105 and glue frame 106.Said reflector plate 103 is attached on the backboard 101, and light source 102 is arranged on the reflector plate 103, said light source 102, goes up prismatic lens 104 and said prismatic lens 105 down and is arranged in the cavity that said backboard 101 is bent to form.
Said glue frame 106 is separately positioned on the both side surface of reflector plate 103 and near the sidewall setting of backboard 101; Last prismatic lens 104 is supported by the end face away from reflector plate 103 of glue frame 106; Following prismatic lens 105 is arranged between prismatic lens 104 and the light source 102, and the boss that is provided with by glue frame 106 supports.
In the specific implementation; The prism facets of following prismatic lens 105 is provided with towards light source 102; The light that is used for light source 102 is sent carries out scattering, and the prism facets backlight 102 of last prismatic lens 104 is provided with, and is used for the light of prismatic lens 105 scatterings is down pooled the directional light perpendicular to prismatic lens.And the interval first preset distance P1 between the upper surface of last prismatic lens 104 lower surfaces and following prismatic lens 105; And the boss of the glue frame 106 through supporting down prismatic lens 105 makes down between prismatic lens 105 bottom surfaces and the reflector plate 103 the second preset distance P2 at interval; Realize preferable light scattering effect and light convergence effect, to increase the light-emitting area of light source 102.In addition, the comparable length S2 weak point of going up prismatic lens 104 across the glue frame of the length S1 across the glue frame of following prismatic lens 105 with further economical with materials, reduces production costs.
Among the utility model embodiment; Said light source 102 is LED or CCFL (Cold cathode fluorescent lamp; The cold cathode fluorescent tube), the said angle that goes up the prism of prismatic lens 104 is 80 °-100 °, and the said angle of the prism of prismatic lens 105 down should be 80 °-100 ° mutually.And the angle of the prism of the angle of the prism of last prismatic lens 104 and following prismatic lens 105 light scattering effect and convergence effect when 90 spend reach the best.
In order to realize light scattering effect preferably, said second preset distance is 25-35mm.When first preset distance was not less than 30mm, the light convergence effect of last prismatic lens 104 was preferable, and first preset distance is big more, and the light convergence effect is good more, specifically can design according to the thickness demand of down straight aphototropism mode set.
The directional light of light source 102 emission is successively behind the upper surface of the prism facets through prismatic lens 105 down and following prismatic lens 105; The light that makes vertical direction to around disperse; Its light path principle is as shown in Figure 2; The light that the prismatic lens of last prismatic lens 104 then will be dispersed pools light vertically upward, and its light path principle is as shown in Figure 3.The divergence of beam of the utility model through earlier light source being sent, the light that will disperse again converges the light-emitting area that increases light source, below the utility model is increased the light-emitting area of light source principle be elaborated:
See also Fig. 1; Suppose that the light angle of divergence of formation was θ after prismatic lens 105 was dispersed the light of vertical incidence down, the angle of last prismatic lens 104 optically focused also is θ, and the distance that goes up between prismatic lens 104 and the following prismatic lens 105 is P1; Because prismatic lens 105 was afterwards before prismatic lens 104 in the arrival under light saw through; Light is dispersed what do not stop, makes light emitting region constantly increase, if the displacement of light this moment between last prismatic lens and following prismatic lens is L; Then the scope of the monolateral increase in the light-emitting area left and right sides is L * cot θ, is assembled up to reaching 104 time of prismatic lens.When prismatic lens 104 was gone up in light arrival, light-emitting area increased to maximum, the displacement L=P1 in this time, and then the scope of the monolateral increase in the left and right sides is P1 * cot θ.Increase scope P1 * cot θ=S1+2P1 * cot θ that the scope P1 * cot θ+the right that luminous width range (promptly going up the length S2 of prismatic lens 104)=original luminous width range (promptly descending the length S1 of prismatic lens)+left side increases behind the light-emitting area increases this moment.
In a further embodiment, the utility model can also be according to the mixed light demand, above the last prismatic lens 104, or between prismatic lens 104 and the following prismatic lens 105, perhaps be provided with diffusion sheet or diffuser plate between time prismatic lens 105 and the reflector plate 103.And the utility model requires as long as can satisfy the mixed light of down straight aphototropism mode set the position and the not restriction of quantity of diffusion sheet or diffuser plate.
Based on above-mentioned down straight aphototropism mode set; The utility model also provides a kind of liquid crystal display; Comprise above-mentioned down straight aphototropism mode set; And display panels and the preceding frame that is used for fixing said down straight aphototropism mode set, said preceding frame is connected with the backboard of down straight aphototropism mode set, and said display panels is between down straight aphototropism mode set and preceding frame.In the specific implementation, preceding frame can be connected with backboard engaging, ultrasonic bonding or through the bolt connection.
The liquid crystal display of the utility model is LCD TV, LCD, notebook, panel computer, mobile phone etc., and the design through the utility model is satisfied the light-emitting area requirement of light source under the prerequisite of using less light source.
In sum; After the light scattering that the utility model sends light source through following prismatic lens, by last prismatic lens scattered beam is pooled parallel light emergence again, realized using under the prerequisite of less light source; Increase the light-emitting area of light source, improved the competitiveness of product on market.
It is understandable that; Concerning those of ordinary skills; Can be equal to replacement or change according to the technical scheme and the utility model design thereof of the utility model, and all these changes or replacement all should belong to the protection model of the appended claim of the utility model.
Claims (10)
1. a down straight aphototropism mode set comprises backboard and light source, it is characterized in that, comprises that also the light that is used for that said light source is sent carries out the following prismatic lens and the last prismatic lens that is used for the light of prismatic lens scattering under said is pooled directional light of scattering; Said light source, go up prismatic lens and said prismatic lens down and be arranged in the cavity that said backboard is bent to form, and said prismatic lens down is between said light source and last prismatic lens.
2. down straight aphototropism mode set according to claim 1; It is characterized in that; The prism facets of said prismatic lens down is towards light source; The said prism facets backlight that goes up prismatic lens, and said interval first preset distance between prismatic lens and the following prismatic lens, interval second preset distance between following prismatic lens and the light source gone up.
3. down straight aphototropism mode set according to claim 1 is characterized in that, also comprises reflector plate, and said reflector plate is attached on the backboard.
4. down straight aphototropism mode set according to claim 3 is characterized in that, also comprises being used to carry the said glue frame of going up prismatic lens and following prismatic lens, and said glue frame is arranged on the reflector plate.
5. down straight aphototropism mode set according to claim 1 is characterized in that, on said prismatic lens above, or between prismatic lens and the following prismatic lens, perhaps be provided with diffusion sheet between time prismatic lens and the reflector plate.
6. down straight aphototropism mode set according to claim 1 is characterized in that, the length of said prismatic lens down is less than last prismatic lens length.
7. down straight aphototropism mode set according to claim 2 is characterized in that, said first preset distance is not less than 30mm, and said second preset distance is 25-35mm.
8. down straight aphototropism mode set according to claim 1 is characterized in that, the said angle that goes up the prism of prismatic lens is 80 °-100 °, and the said angle of the prism of prismatic lens down should be 80 °-100 ° mutually.
9. down straight aphototropism mode set according to claim 8 is characterized in that, the angle of the prism of last prismatic lens is 90 °, and the said angle of the prism of prismatic lens down should be 90 ° mutually.
10. liquid crystal display; It is characterized in that; Comprise like each described down straight aphototropism mode set in the claim 1 to 9; And display panels and the preceding frame that is used for fixing said down straight aphototropism mode set, said preceding frame is connected with the backboard of down straight aphototropism mode set, and said display panels is between down straight aphototropism mode set and preceding frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197432 CN202598316U (en) | 2012-05-04 | 2012-05-04 | Direct type backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220197432 CN202598316U (en) | 2012-05-04 | 2012-05-04 | Direct type backlight module and liquid crystal display device |
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| Publication Number | Publication Date |
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| CN202598316U true CN202598316U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220197432 Expired - Fee Related CN202598316U (en) | 2012-05-04 | 2012-05-04 | Direct type backlight module and liquid crystal display device |
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| CN (1) | CN202598316U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832841A (en) * | 2015-05-19 | 2015-08-12 | 武汉华星光电技术有限公司 | Backlight unit and display device with backlight unit |
| CN106233194A (en) * | 2014-05-20 | 2016-12-14 | 堺显示器制品株式会社 | Display device |
| WO2017101564A1 (en) * | 2015-12-16 | 2017-06-22 | 小米科技有限责任公司 | Display apparatus and electronic device |
| CN108845461A (en) * | 2018-08-31 | 2018-11-20 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| TWI650598B (en) * | 2017-12-08 | 2019-02-11 | 胡崇銘 | Optical film module and device thereof |
| CN110824776A (en) * | 2019-11-27 | 2020-02-21 | 惠州市隆利科技发展有限公司 | Direct type mini LED backlight module |
| CN111694087A (en) * | 2020-07-15 | 2020-09-22 | 惠科股份有限公司 | Backlight module and display device |
| WO2020258784A1 (en) * | 2019-06-27 | 2020-12-30 | 惠州市华星光电技术有限公司 | Diffusion plate and manufacturing method therefor, backlight module and display device |
| KR20210110455A (en) * | 2020-02-28 | 2021-09-08 | 이용찬 | Anti-glare light device |
| CN114578615A (en) * | 2022-02-18 | 2022-06-03 | 惠州视维新技术有限公司 | Backlight module and display device |
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2012
- 2012-05-04 CN CN 201220197432 patent/CN202598316U/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106233194A (en) * | 2014-05-20 | 2016-12-14 | 堺显示器制品株式会社 | Display device |
| CN106233194B (en) * | 2014-05-20 | 2019-09-10 | 堺显示器制品株式会社 | Display device |
| CN104832841A (en) * | 2015-05-19 | 2015-08-12 | 武汉华星光电技术有限公司 | Backlight unit and display device with backlight unit |
| WO2017101564A1 (en) * | 2015-12-16 | 2017-06-22 | 小米科技有限责任公司 | Display apparatus and electronic device |
| US10018756B2 (en) | 2015-12-16 | 2018-07-10 | Xiaomi Inc. | Display apparatus and electronic device |
| TWI650598B (en) * | 2017-12-08 | 2019-02-11 | 胡崇銘 | Optical film module and device thereof |
| CN109901249A (en) * | 2017-12-08 | 2019-06-18 | 胡崇铭 | The display equipment and light emitting device of optical diaphragm module and Application Optics membrane module |
| CN108845461A (en) * | 2018-08-31 | 2018-11-20 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2020042525A1 (en) * | 2018-08-31 | 2020-03-05 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN108845461B (en) * | 2018-08-31 | 2023-06-30 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| WO2020258784A1 (en) * | 2019-06-27 | 2020-12-30 | 惠州市华星光电技术有限公司 | Diffusion plate and manufacturing method therefor, backlight module and display device |
| CN110824776A (en) * | 2019-11-27 | 2020-02-21 | 惠州市隆利科技发展有限公司 | Direct type mini LED backlight module |
| KR20210113107A (en) * | 2020-02-28 | 2021-09-15 | 이용찬 | Anti-glare light device |
| KR102301675B1 (en) | 2020-02-28 | 2021-09-14 | 이용찬 | Anti-glare light device |
| KR20210113105A (en) * | 2020-02-28 | 2021-09-15 | 이용찬 | Anti-glare light device |
| KR20210110455A (en) * | 2020-02-28 | 2021-09-08 | 이용찬 | Anti-glare light device |
| KR20210113106A (en) * | 2020-02-28 | 2021-09-15 | 이용찬 | Anti-glare light device |
| KR102670050B1 (en) | 2020-02-28 | 2024-05-27 | 이용찬 | Light device having anti-glare function through anti-glare sheet |
| KR102670051B1 (en) | 2020-02-28 | 2024-05-27 | 이용찬 | Light device having anti-glare function through elevating reflector |
| KR102670052B1 (en) | 2020-02-28 | 2024-05-27 | 이용찬 | Light device having anti-glare function through a pluratlity of elevating reflectors |
| CN111694087A (en) * | 2020-07-15 | 2020-09-22 | 惠科股份有限公司 | Backlight module and display device |
| CN114578615A (en) * | 2022-02-18 | 2022-06-03 | 惠州视维新技术有限公司 | Backlight module and display device |
| WO2023155527A1 (en) * | 2022-02-18 | 2023-08-24 | 惠州视维新技术有限公司 | Backlight module and display apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20170504 |