CN102287689A - Backlight module and liquid crystal display - Google Patents
Backlight module and liquid crystal display Download PDFInfo
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- CN102287689A CN102287689A CN2011102045361A CN201110204536A CN102287689A CN 102287689 A CN102287689 A CN 102287689A CN 2011102045361 A CN2011102045361 A CN 2011102045361A CN 201110204536 A CN201110204536 A CN 201110204536A CN 102287689 A CN102287689 A CN 102287689A
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- 239000004973 liquid crystal related substance Substances 0.000 title 1
- 238000002834 transmittance Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 19
- 238000001579 optical reflectometry Methods 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000005142 aphototropism Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001795 light effect Effects 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention discloses a backlight module, which comprises a plurality of linear light sources, at least two lamp slots, a lower reflecting plate, an upper reflecting plate and a module framework. The lamp slots are arc-shaped, the linear light sources are respectively arranged in the lamp slots, adjacent lamp slots are arranged back to back, the openings of the lamp slots on the edges are arranged inwards, and a light transmission plate has certain light transmittance and light reflectance; the lower reflecting plate is arranged under the lamp slots and is used for selectively reflecting light; the upper reflecting plate is arranged above the lamp slots and is used for selectively transmitting light; and the module framework is used for accommodating the linear light sources, the lamp slots, the lower reflecting plate and the upper reflecting plate. The light and thin novel framework type backlight module design is adopted in the backlight module, and the backlight module can be applied in large-sized flat panel displays.
Description
Technical field
The present invention relates to the LCD of a kind of module backlight and this module backlight of employing.
Background technology
Existing flat-panel screens adopts the TFT-LCD Display Technique more, and TFT-LCD is the luminous demonstration of inactive mode, must provide uniform system brightness to arrange in pairs or groups with it by stable backlight source module (Backlight Module), could obtain outstanding display effect.Backlight source module by luminescence component arrange, the collocation of optics portion material and internal mechanism design, the output intensity even planar light source.Mainly be divided into two kinds of direct-light-type backlight module and side type modules backlight according to the arrangement mode of luminescence component, schematic diagram is as follows: Fig. 1 is a side type backlight source module framework; Fig. 2 is a direct-light-type backlight module framework.
Tradition side type module backlight need carry out leaded light and mixed light by LGP opposite side light source, and LGP is used and had following problem: 1. the LGP application cost is in a high position; 2. in the large scale FPD was used, the LGP quality was big, does not meet light-weighted designer trends; 3. problems such as yellow or distortion can appear in large-size light-conducting plate current collector internal environment factor affecting.
The tradition down straight aphototropism mode set needs certain mixed light space to make the bottom light source mixed light, and therefore, down straight aphototropism mode set has difficulties in the slimming design.In addition, if adopt the light source of LED as down straight aphototropism mode set, then need a greater number in, low-power LED, this does not meet efficient, energy-conservation display application trend.
Summary of the invention
For overcoming the low problem of prior art module utilization rate backlight, the invention provides the high module backlight of a kind of light utilization efficiency.Technical scheme is: a kind of module backlight, it is characterized in that, and comprising:
A plurality of line sources,
At least two light troughs, this light trough are an arcuation, and described line source is located at the light trough inboard respectively, and adjacent light trough is provided with dorsad, and the light trough opening at edge is provided with inwardly, and this light-passing board has certain light transmittance and light reflectivity;
Reflector plate once is located at the below of light trough, in order to light is carried out selective reflecting;
Transmission sheet on one is located at the top of light trough, in order to light is carried out selective transmission;
One module framework is in order to hold above-mentioned line source, light trough, following reflector plate and last transmission sheet.
Preferable, described light trough is made by plastic material, and this light trough opening angle can be adjusted.
Preferable, described light trough material comprises PMMA, PC, PS, PET or other macromolecular material.
Preferable, described line source comprises fluorescent tube or LED lamp bar or LED Lightbar.
Preferable, the scope of described light trough light transmittance is 5 ~ 95%, the scope of light reflectivity is 5 ~ 95%.
Preferable, described light trough opening angle can be adjusted in 0-180 ° of scope.
Preferable, adjacent light trough is one-body molded by extruding or Shooting Technique.
Preferable, the described optical reflectivity of reflector plate down〉80%.
Preferable, the optical transmittance of last transmission sheet is 15 ~ 95%, optical reflectivity is 15 ~ 95%.
For overcoming the low problem of prior art LCD light utilization efficiency, the present invention also provides a kind of light utilization efficiency high LCD.Concrete scheme is: a kind of LCD, and it comprises the module backlight of a display panels and a setting stacked with it, this module backlight adopts above-mentioned module backlight.
The advantage of comprehensive side type of the present invention and down straight aphototropism mode set, innovation proposes the notion of frame-type module backlight, the mixed light effect is better than existing two kinds of modular structures, realization has the novel frame formula backlight source module design of lightweight and slimming concurrently, and this module backlight can be applicable to can improve light utilization efficiency on the large scale flat-panel screens.
Description of drawings
Figure 1A is the side type backlight source module Organization Chart of prior art;
Figure 1B is the direct-light-type backlight module Organization Chart of prior art;
Fig. 2 is a line source structure chart of the present invention;
Fig. 3 A is a light trough structure chart of the present invention;
Fig. 3 B is that the adjacent light trough of the present invention is in conjunction with schematic diagram;
Fig. 4 is light trough of the present invention and line source combining structure schematic diagram;
Fig. 5 is the present invention's module mixed light backlight chamber schematic diagram;
Fig. 6 is a back light module unit structure exploded view of the present invention;
Fig. 7 is the present invention's module constitutional diagram backlight.
The specific embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below will the present invention be described in further detail by specific embodiment and relevant drawings.
The invention provides a kind of module backlight, comprising: a plurality of line sources, at least two light troughs, this light trough is an arcuation, and described line source is located at the light trough inboard respectively, and adjacent light trough is provided with dorsad, the light trough opening at edge is provided with inwardly, and this light-passing board has certain light transmittance and light reflectivity; Reflector plate once is located at the below of light trough, in order to light is carried out selective reflecting; Transmission sheet on one is located at the top of light trough, in order to light is carried out selective transmission; One module framework is in order to hold above-mentioned line source, light trough, following reflector plate and last transmission sheet.Described light trough is made by plastic material, and this light trough opening angle can be adjusted.Wherein, described light trough material comprises PMMA, PC, PS, PET or other macromolecular material; Described line source comprises fluorescent tube or LED lamp bar; The scope of described light trough light transmittance is 5 ~ 95%, and the scope of light reflectivity is 5 ~ 95%; Described light trough opening angle can be adjusted in 0-180 ° of scope; Adjacent light trough is one-body molded by extruding or Shooting Technique; The described optical reflectivity of reflector plate down〉80%; The optical transmittance of last transmission sheet is 15 ~ 95%, and optical reflectivity is 15 ~ 95%.
Please refer to Fig. 2.Figure 2 shows that the line source structure chart.Line source can be the fluorescent tube form, as CCFL cold-cathode lamp etc.; Line source can also be the LED lamp strips of LED and the combination of leaded light bar, comprises single LED lamp bar and two LED lamp bar; Line source can also be a LED Lightbar form or based on other form of LED Lightbar form, as LED Lightbar fluorescent tube (LED Lightbar is placed in the fluorescent tube) etc., line source can also be other light source with the linear forms bright dipping, is not limited thereto.
Please refer to Fig. 3 A and Fig. 3 B, light trough must have certain light transmittance, and the scope of light transmittance is 5 ~ 95%; Light trough also has certain light reflectivity, and the scope of light reflectivity is 5 ~ 95%.The material of light trough can be PMMA, PC, PS, PET or other macromolecular material, adjusts the light transmittance and the reflecting rate of light trough by the prescription design; The manufacture of light trough can be extrusion moulding, injection mo(u)lding or other polymer shaping mode, the opening angle of light trough is 0 ~ 180 °, A/F is the distance between the lower edge on the light trough greater than 0mm(light trough A/F, its scope depends on the area in mixed light district, mixed light district area is big more in theory, and the A/F of required light trough is big more; The application requirements of display device, little of mobile phone, arrive outdoor advertisement screen greatly, related mixed light district area difference, therefore, the A/F scope of light trough is〉0mm).
In the present embodiment, its exterior bottom is the plane, be beneficial between the light trough or light trough and other assembly between bonding combination.Based on this light trough structure, can be just like the light trough combining form shown in Fig. 3 B, the combination dorsad of two light troughs, this combining structure can by extrude or Shooting Technique one-body molded, or connecting combination by bonding or other fixed form between light trough, light trough and light trough combination all have the mechanism supports function.The above light trough structure example that only presents a demonstration, all light trough designs based on above function are all protected.
Please refer to Fig. 4, for line source is placed along light trough is inboard.
Please refer to Fig. 5, be the present invention's module mixed light backlight chamber schematic diagram.With the special light trough of line source mechanism collocation, form the mixed light chamber with upper and lower two special optical diaphragms, realize that line source is converted into area source, and the design of light trough that can be special is slit into a plurality of mixed light cavity region with large scale mould splits backlight, the design of realization novel frame formula backlight module.
Please refer to Fig. 6, be back light module unit structure exploded view of the present invention.This module backlight is combined by line source, light trough, time reflector plate, last transmittance plate and module housing.Wherein, following reflector plate can be that silver-colored reflector plate, white reflection sheet or other have film, sheet material or the sheet material of high optical reflectivity; The optical reflectivity of following reflector plate〉80%, the function of following reflector plate is to constitute the mixed light chamber with line source, light trough and last transmittance plate, light is reflected the auxiliary function that realizes mixed light and leaded light; Last transmission sheet is that light is had film, sheet material or the sheet material that the polarisation selectivity penetrates and reflects, the optical transmittance of last transmission sheet is 15 ~ 95%, optical reflectivity is 15 ~ 95%, the function of last transmission sheet is to constitute the mixed light chamber with line source, light trough and following reflector plate, light is carried out selectivity penetrate and reflect, the auxiliary function that realizes mixed light and leaded light.Combination step is: (1) is combined into line source mechanism with line source and light trough earlier; (2) reflector plate under the placement of module framework bottom, this time reflector plate can be the optics portion material of silver-colored reflector plate, white reflection sheet or other high optical reflectivity; (3) by bonding or other fixed form the arrangement of line source mechanism is positioned down on the reflector plate, backlight module is divided into the mixed light zone that area equates or do not wait as frame supported mechanism; (4) will go up transmittance plate and place line source mechanism top, form frame-type backlight module basic structure; (5) by above frame-type backlight module basic structure, disposing optics portion materials such as diffusion sheet, increment sheet, form complete novel frame formula module backlight.
Wherein, the optical principle in mixed light district: the output light angle of regulating line source by the light trough opening angle, make light source after being input to the mixed light chamber, in carrying out reflection repeatedly down between reflector plate and the last transmittance plate and penetrating, thereby make line source can in specific range, finish the long-range conduction of light, form even planar light source.The support concept of line source mechanism: with the module housing, by bonding or other physical method light trough and light trough combination are fixed on the following reflector plate, the framework of Gou Chenging can play the effect of physical support to the placement of last transmittance plate and other optics portion material thus, by it in large size back light module is used, the physical deformation that can avoid the large scale blooming piece to produce owing to gravity factor, the optical stability of lifting backlight module.
The mixed light principle of line source mechanism: line source mechanism is in the intersection in mixed light district, mixed light between the mixed light district is played the effect of harmony, therefore light trough must have certain reflectivity and light transmittance, and requires reflectivity values higher relatively, and light transmittance numerical value is relatively low.Higher reflectivity can make most line source light along the bright dipping of light trough opening direction and inject in the mixed light chamber, improves the light source utilization rate.Light trough and light source distance are nearest, the light intensity maximum that is subjected to, therefore only the mean flow rate that need guarantee the light intensity that sees through from the light trough top and mixed light district planar light source quite or approaching can reach harmony mixed light district mixed light, promotes the purpose of backlight module planar light source integral body mixed light effect.The adjusting of simulating by experiment and fill a prescription can obtain rational reflectivity of light trough and light transmittance parameter.
The present invention also provides a kind of LCD, and it comprises the module backlight of a display panels and a setting stacked with it, and described back light module unit structure above this module backlight adopts can improve light utilization efficiency.
The advantage of comprehensive side type of the present invention and down straight aphototropism mode set, innovation proposes the notion of frame-type module backlight, the mixed light effect is better than existing two kinds of modular structures, realization has the novel frame formula backlight source module design of lightweight and slimming concurrently, and this module backlight can be applicable to can improve light utilization efficiency on the large scale flat-panel screens.
Above-listed preferred embodiment; the purpose, technical solutions and advantages of the present invention are further described; institute is understood that; the above only is preferred embodiment of the present invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a module backlight is characterized in that, comprising:
A plurality of line sources,
At least two light troughs, this light trough are an arcuation, and described line source is located at the light trough inboard respectively, and adjacent light trough is provided with dorsad, and the light trough opening at edge is provided with inwardly, and this light-passing board has certain light transmittance and light reflectivity;
Reflecting plate once is located at the below of light trough, in order to light is carried out selective reflecting;
Transmittance plate on one is located at the top of light trough, in order to light is carried out selective transmission;
One module framework is in order to hold above-mentioned line source, light trough, following reflector plate and last transmission sheet.
2. module backlight according to claim 1 is characterized in that described light trough is made by plastic material, and this light trough opening angle can be adjusted.
3. module backlight according to claim 1 is characterized in that, described light trough material comprises PMMA, PC, PS, PET or other macromolecular material.
4. module backlight according to claim 1 is characterized in that, described line source comprises fluorescent tube or LED lamp bar or LED Lightbar.
5. module backlight according to claim 1 is characterized in that, the scope of described light trough light transmittance is 5 ~ 95%, and the scope of light reflectivity is 5 ~ 95%.
6. module backlight according to claim 1 is characterized in that, described light trough opening angle can be adjusted in 0-180 ° of scope.
7. module backlight according to claim 1 is characterized in that, adjacent light trough is one-body molded by extruding or Shooting Technique.
8. module backlight according to claim 1 is characterized in that, the described optical reflectivity of reflector plate down〉80%.
9. module backlight according to claim 1 is characterized in that, the optical transmittance of last transmission sheet is 15 ~ 95%, and optical reflectivity is 15 ~ 95%.
10. LCD, it comprises the module backlight of a display panels and a setting stacked with it, this module backlight is as any described module backlight of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102045361A CN102287689B (en) | 2011-07-21 | 2011-07-21 | Backlight module and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102045361A CN102287689B (en) | 2011-07-21 | 2011-07-21 | Backlight module and liquid crystal display |
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| Publication Number | Publication Date |
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| CN102287689A true CN102287689A (en) | 2011-12-21 |
| CN102287689B CN102287689B (en) | 2013-11-20 |
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| CN2011102045361A Expired - Fee Related CN102287689B (en) | 2011-07-21 | 2011-07-21 | Backlight module and liquid crystal display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047583A (en) * | 2012-12-07 | 2013-04-17 | 康佳集团股份有限公司 | Side light direct type backlight module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159601A (en) * | 1994-12-16 | 1997-09-17 | 佳能株式会社 | Illumination device LCD equipment containing same |
| CN1696791A (en) * | 2005-06-22 | 2005-11-16 | 友达光电股份有限公司 | Straight light type structure of backlight unit |
| CN2837892Y (en) * | 2005-12-12 | 2006-11-15 | 陕西科技大学 | Easy-to-replace LCD backlight source structure |
| TWM343817U (en) * | 2008-02-15 | 2008-11-01 | Kismart Corp | Diffusion plate and light guide plate structure using laser engraving |
| CN201191339Y (en) * | 2008-04-17 | 2009-02-04 | 广东雪莱特光电科技股份有限公司 | Planar backlight source module |
| CN202188393U (en) * | 2011-07-21 | 2012-04-11 | 冠捷显示科技（厦门）有限公司 | Backlight module |
-
2011
- 2011-07-21 CN CN2011102045361A patent/CN102287689B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159601A (en) * | 1994-12-16 | 1997-09-17 | 佳能株式会社 | Illumination device LCD equipment containing same |
| CN1696791A (en) * | 2005-06-22 | 2005-11-16 | 友达光电股份有限公司 | Straight light type structure of backlight unit |
| CN2837892Y (en) * | 2005-12-12 | 2006-11-15 | 陕西科技大学 | Easy-to-replace LCD backlight source structure |
| TWM343817U (en) * | 2008-02-15 | 2008-11-01 | Kismart Corp | Diffusion plate and light guide plate structure using laser engraving |
| CN201191339Y (en) * | 2008-04-17 | 2009-02-04 | 广东雪莱特光电科技股份有限公司 | Planar backlight source module |
| CN202188393U (en) * | 2011-07-21 | 2012-04-11 | 冠捷显示科技（厦门）有限公司 | Backlight module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047583A (en) * | 2012-12-07 | 2013-04-17 | 康佳集团股份有限公司 | Side light direct type backlight module |
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| CN102287689B (en) | 2013-11-20 |
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Owner name: TPV TECHNOLOGY (QINGDAO) CO., LTD. Free format text: FORMER OWNER: GUANJIE DISPLAY TECHNOLOGY (XIAMEN) CO., LTD. Effective date: 20150506 |
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Effective date of registration: 20150506 Address after: 266109 entrepreneurship center of hi tech Industrial Development Zone, Shandong, Qingdao 324-33 Patentee after: AOC Technology (Qingdao) Co., Ltd. Address before: 361111 No. 1 Xiang Hai Road, Torch Industrial Zone (Xiangan), Fujian, Xiamen Patentee before: TPV Display Technology (Xiamen) Co., Ltd. |
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