CN101676620A - Liquid crystal display device, backlight module and light-emitting unit - Google Patents
Liquid crystal display device, backlight module and light-emitting unit Download PDFInfo
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- CN101676620A CN101676620A CN200810149210A CN200810149210A CN101676620A CN 101676620 A CN101676620 A CN 101676620A CN 200810149210 A CN200810149210 A CN 200810149210A CN 200810149210 A CN200810149210 A CN 200810149210A CN 101676620 A CN101676620 A CN 101676620A
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Abstract
The invention relates to a light-emitting unit which comprises a light guide element and at least one light-emitting element. The light guide element comprises a light incident surface, a light emission surface and a containing space. The light-emitting element is contained in the containing space and is adjacent to the light incident surface. The invention also discloses a backlight module and aliquid crystal display device containing the light-emitting unit.
Description
Technical field
The present invention relates to a kind of display unit, backlight module and luminescence unit, relate in particular to a kind of liquid crystal indicator, backlight module and luminescence unit.
Background technology
In the backlight module of liquid crystal indicator, and though light emitting source be line source (for example: cathode fluorescent tube, CCFL) or spot light (for example: light emitting diode, LED), all need through the diffusion or leaded light after, to become area source.And spot light is in diffusion or leaded light process, the setting and the use of the mixed light of brightness uniformity, color and light-emitting component quantity, quality and production cost that will decision backlight module and liquid crystal indicator.
With reference to shown in Figure 1, a kind of existing backlight module 10 comprises diffuser plate 11 and a plurality of light-emitting component 12, and backlight module 10 is a direct type backlight module.Diffuser plate 11 is arranged on the light-emitting component 12, and existing light-emitting component 12 is a light emitting diode, and its most high strength light concentrates in the angle of departure scope of certain angle, and becomes spot light.Diffuser plate 11 is the composite construction of many diffusion particles of motherboard doping, and has incidence surface 11a and exiting surface 11b.Light-emitting component 12 is arranged at incidence surface 11a below.When light-emitting component 12 emits beam after incidence surface 11a incident, through in addition diffusion and after exiting surface 11b penetrates, just form original spot light uniform surface light source dispersedly of diffuser plate 11.
Yet, light-emitting component 12 is directly via diffuser plate 11 outgoing exiting surface 11b, still see the point-like bright rays from liquid crystal indicator easily, adding the emission light intensity of glazed thread outside the side direction certain angle falls suddenly, though diffuser plate 11 diffusions directly over 12 warps of each light-emitting component, its light mixed light and effect of uniform are still limited.In addition, prior art is to avoid the relative dark space of each 12 boundary of light-emitting component too obvious, thereby the spacing of light-emitting component 12 need keep certain degree of closeness and can't widen.Therefore, the usage quantity of not only existing light-emitting component 12 can't reduce, and the area source that contains the point-like bright rays also causes the liquid crystal indicator display quality not good.
Therefore, the bright rays phenomenon that how to provide a kind of liquid crystal indicator, backlight module and luminescence unit to make light emitting source is improved, also can increases mixed light efficient, more can lower the usage quantity of light-emitting component, and then increase the display quality of liquid crystal indicator and reduce production costs, become one of important topic.
Summary of the invention
In view of above-mentioned problem, purpose of the present invention is for providing liquid crystal indicator, backlight module and luminescence unit, setting by light-guide device makes illuminating source increase mixed light efficient, improves the light uniformity, avoids bright rays to produce and reduce the use amount of light-emitting component, and then increases the liquid crystal indicator display quality and reduce production costs.
For reaching above-mentioned purpose, comprise light-guide device and at least one light-emitting component according to a kind of luminescence unit of the present invention.Light-guide device has incidence surface, exiting surface and accommodation space.Light-emitting component is placed in accommodation space, and establishes with the incidence surface neighbour.
For reaching above-mentioned purpose, comprise circuit board and a plurality of luminescence unit according to a kind of backlight module of the present invention.Luminescence unit is arranged on the circuit board and with circuit board and is electrically connected.Each luminescence unit comprises light-guide device and at least one light-emitting component.Light-guide device has incidence surface, exiting surface and accommodation space.Light-emitting component is placed in accommodation space and establishes with the incidence surface neighbour.
For reaching above-mentioned purpose, comprise display panels and backlight module according to a kind of liquid crystal indicator of the present invention.The corresponding setting of backlight module with display panels, and have circuit board and a plurality of luminescence unit.Luminescence unit is arranged on the circuit board and with circuit board and is electrically connected.Each luminescence unit comprises light-guide device and at least one light-emitting component.Light-guide device has incidence surface, exiting surface and accommodation space.Light-emitting component is placed in accommodation space and establishes with the incidence surface neighbour.
From the above, by being set at light-guide device, lead angle, half-transmitting and half-reflecting film, diffusing structure, circular arc or cone structure make source light increase the effect of forward and the even diffusion of side direction according to a kind of liquid crystal indicator of the present invention, backlight module and luminescence unit.Compared with prior art, the present invention can make illuminating source increase mixed light efficient, improves the light uniformity, avoid bright rays to produce and reduce the use amount of light-emitting component, and then increases the liquid crystal indicator display quality and reduce production costs.
Description of drawings
Fig. 1 is a kind of schematic diagram of backlight module of existing led light source;
Fig. 2 A and Fig. 2 B are the schematic diagram according to a kind of backlight module of first embodiment of the invention;
Fig. 3 is the schematic diagram according to a kind of backlight module of second embodiment of the invention;
Fig. 4 is the schematic diagram according to a kind of backlight module of third embodiment of the invention;
Fig. 5 A and Fig. 5 B are the schematic diagram according to a kind of backlight module of fourth embodiment of the invention;
Fig. 6 is the schematic diagram according to a kind of backlight module of fifth embodiment of the invention; And
Fig. 7 is the schematic diagram in conjunction with a kind of liquid crystal indicator of the preferred embodiment of the present invention.
The specific embodiment
Hereinafter with reference to relevant drawings, a kind of liquid crystal indicator, backlight module and luminescence unit according to the preferred embodiment of the present invention are described, wherein components identical will be illustrated with identical reference symbol.
First embodiment
Shown in Fig. 2 A and Fig. 2 B, a kind of backlight module 20 of first embodiment of the invention comprises circuit board 22 and a plurality of luminescence unit 21 (icon is the representative signal with only).Backlight module 20 can be direct type backlight module or side light type back light module.In present embodiment, backlight module 20 is the example explanation with the direct type backlight module.Luminescence unit 21 is arranged on the circuit board 22, and is electrically connected with circuit board 22.Each luminescence unit 21 comprises light-guide device 211 and at least one light-emitting component 212.Light-emitting component 212 for example but be not limited to the light-emitting component of light emitting diode or Organic Light Emitting Diode (OLED).Light-guide device 211 is a lens arrangement, and has incidence surface 211a, exiting surface 211b and accommodation space 211c.Light-emitting component 212 is placed in accommodation space 211c, and establishes with incidence surface 211a neighbour.The shape of the shape of incidence surface 211a and light-emitting component 212 cooperatively interacts, also or the shape of the shape of incidence surface 211a and light-emitting component 212 packaging bodies cooperatively interact.Incidence surface 211a is for example and without limitation to upwards convex surface or to upper recess surface.In present embodiment, incidence surface 211a is a ㄇ word taper surface protruding upward.In addition, have transparent optical cement G between light-emitting component 212 and the incidence surface 211a, and its refractive index is between the refractive index of the refractive index of light-emitting component 212 and light-guide device 211, so that the loss during the light conduction reduces to minimum.In present embodiment, exiting surface 211b is provided with a lead angle 214 at least in light-emitting component 212 tops.In addition, the side that exiting surface 211b is relative is provided with a plurality of sites 213 or is provided with as the micro-structural (figure is demonstration) of V-shaped groove (V-cut).
Be noted that, light-emitting component 212 of the present invention can directly be placed in accommodation space 211c by the packaging body that includes light-emitting diode chip for backlight unit, or be placed in accommodation space 211c with the light emitting diode bare chip, can be forms such as packaging body directly maybe also by the light emitting diode bare chip with light-guide device 211, and with back bonding (flip-chip bonding) or the lead-in wire bonding (wire bonding) mode and circuit board 22 electrical ties.
When the light L of luminescence unit 21 conducts to exiting surface 211b, because the setting of lead angle 214, utilize the law of refraction via suitable angle design, light-emitting component 212 can be concentrated the light L that penetrates upward, with lead angle 214 in addition the mode of total reflection reflex to site 213, via site 213 it is destroyed toward ability that side direction continues total reflection conduction, and light L is derived from exiting surface 211b, produce the point-like bright rays to avoid outgoing directly over the direct self-emission device 212 of high-intensity light.
Second embodiment
With reference to shown in Figure 3, a kind of backlight module 30 of second embodiment of the invention comprises circuit board 32 and a plurality of luminescence unit 31, and its essential structure is most of identical with the backlight module 20 of first embodiment, so repeat no more in this.Backlight module 30 and backlight module 20 different characteristics are: the luminescence unit 31 only regional area directly over light-emitting component 312 is provided with half-transmitting and half-reflecting film 315 and lead angle need be set, and the material of half-transmitting and half-reflecting film 315 can be has light transmission and reflexive multilayer film simultaneously.
As shown in Figure 3, when the light L of each luminescence unit 31 conducts to exiting surface 311b, by half-transmitting and half-reflecting film 315 is set, make light-emitting component 312 to directly over and directly near directly penetrate light L, wherein, most light L that light-emitting component 312 sends have directly transmission exiting surface 311b of part, then reflection around light-guide device 311 of other parts, via site 313 light L being continued the total reflection conducting power toward side direction again destroys, and light L is derived from exiting surface 311b, can avoid so equally the direct self-emission device 312 of too much high-intensity light in directly over and near penetrate and produce bright rays, and also do not cause and lack light L that direct transmission penetrates directly over the light-emitting component 312 and local dark space directly over causing.Thus, can make the illuminating effect of backlight module 30 more even.
The 3rd embodiment
With reference to shown in Figure 4, a kind of backlight module 40 of third embodiment of the invention, its basic structure describes in detail in the backlight module 20 of above-mentioned first embodiment, so repeat no more.Luminescence unit 41 is except that identical with the luminescence unit 21 of above-mentioned first embodiment, and luminescence unit 41 still has a plurality of lead angles 414 and is positioned on the light-emitting component 412 and the side of light-guide device 411.Light L destroys the ability that light L continues the total reflection conduction by the lead angle 414 of light-guide device 411 sides, and it is penetrated from lead angle 414 surfaces, not only strengthen the color mixed light effect between each luminescence unit 41, the quantity of light-emitting component 412 is reduced in the also gap that therefore can increase 41 of each luminescence units.
The 4th embodiment
Shown in Fig. 5 A and Fig. 5 B, it is a kind of backlight module 50 of fourth embodiment of the invention, and the basic comprising of this luminescence unit 51a, 51b is identical with the luminescence unit 41 of above-mentioned the 3rd embodiment.
Shown in Fig. 5 A, luminescence unit 51a and luminescence unit 41 different characteristics are: incidence surface 511a is an arc surface, thus, not only light-emitting component 512 easier bright dippings, can reduce the loss of light (figure does not show) when being incident to light-guide device 511 of light-emitting component 512, and the incidence surface 511a of light-guide device 511 is easier to moulding.
Shown in Fig. 5 B, on incidence surface 511a ', also can set up scattering structure 516, for example a plurality of diffusion particles make light L scattering angle bigger, and the outgoing of light L is also just more even.
The 5th embodiment
With reference to shown in Figure 6, a kind of backlight module 60 of fifth embodiment of the invention comprises circuit board 62 and luminescence unit 61.Wherein, light-guide device 611 characteristics different with the various embodiments described above of luminescence unit 61 are: incidence surface 611a has the taper surface of half-transmitting and half-reflecting character, its summit is over against light-emitting component 612, and so design still can avoid bright rays to produce to replace the lead angle design of the various embodiments described above.
With reference to shown in Figure 7, a kind of liquid crystal indicator 7 of the preferred embodiment of the present invention comprises display panels 70 and backlight module 80.Backlight module 80 and display panels 70 corresponding settings.The formation of backlight module 80, except that the led light source module 81 that the luminescence unit that can use the various embodiments described above and circuit board are formed (being a plurality of luminescence units) at a plurality of round pie elements shown in Figure 7, backlight module 80 also comprises optical diaphragm group 82, is adjacent to this exiting surface of this luminescence unit.Diffusion sheet 823 was formed under optical diaphragm group 82 for example reached by last diffusion sheet 821, brightening film sheet 822, so that the light source of liquid crystal indicator 7 even no bright rays to be provided.
In sum, because of making source light increase the effect of forward and the even diffusion of side direction by lead angle, half-transmitting and half-reflecting film, diffusing structure, circular arc or cone structure are set at light-guide device according to a kind of liquid crystal indicator of the present invention, backlight module and luminescence unit.Compared with prior art, the present invention can make illuminating source increase mixed light efficient, improves the light uniformity, avoid bright rays to produce and reduce the use amount of light-emitting component, and then increases the liquid crystal indicator display quality and reduce production costs.
The above only is an illustrative, but not is restrictive.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the appended claim its equivalent modifications of carrying out or change.
Claims (20)
1, a kind of luminescence unit comprises:
Light-guide device has incidence surface, exiting surface and accommodation space; And
At least one light-emitting component is placed in described accommodation space, and establishes with described incidence surface neighbour.
2, luminescence unit as claimed in claim 1, wherein said light-guide device have at least one lead angle that is arranged at described exiting surface.
3, luminescence unit as claimed in claim 2, wherein said lead angle are positioned at the top of described light-emitting component and/or the side of described light-guide device.
4, luminescence unit as claimed in claim 1, the described exiting surface and/or the described incidence surface that wherein are positioned on the described light-emitting component are provided with the half-transmitting and half-reflecting film.
5, luminescence unit as claimed in claim 1, wherein said incidence surface is for convex surface upwards or to upper recess surface.
6, luminescence unit as claimed in claim 5, wherein said incidence surface are arcwall face or taper surface.
7, luminescence unit as claimed in claim 1, wherein said incidence surface has the scattering structure.
8, luminescence unit as claimed in claim 1, wherein said light-guide device have a plurality of sites or the micro-structural that is arranged at the relative side of described exiting surface.
9, luminescence unit as claimed in claim 1, wherein said light-emitting component are bare chip or luminous packaging body.
10, luminescence unit as claimed in claim 1, it is arranged on the circuit board, and is electrically connected with described circuit board.
11, a kind of backlight module comprises:
Circuit board; And
A plurality of luminescence units, be arranged on the described circuit board and and be electrically connected with described circuit board, each described luminescence unit comprises light-guide device and at least one light-emitting component, described light-guide device has incidence surface, exiting surface and accommodation space, and described light-emitting component is placed in described accommodation space and establishes with described incidence surface neighbour.
12, backlight module as claimed in claim 11, wherein said light-guide device have at least one lead angle that is arranged at described exiting surface.
13, backlight module as claimed in claim 12, wherein said lead angle are positioned at the top of described light-emitting component and/or the side of described light-guide device.
14, backlight module as claimed in claim 11, the described exiting surface and/or the described incidence surface that wherein are positioned on the described light-emitting component are provided with the half-transmitting and half-reflecting film.
15, backlight module as claimed in claim 11, wherein said incidence surface is for convex surface upwards or to upper recess surface.
16, backlight module as claimed in claim 15, wherein said incidence surface are arcwall face or taper surface.
17, backlight module as claimed in claim 11, wherein said incidence surface has the scattering structure.
18, backlight module as claimed in claim 11, wherein said light-guide device have a plurality of sites or the micro-structural that is arranged at the relative side of described exiting surface.
19, backlight module as claimed in claim 11, wherein said light-emitting component are bare chip or luminous packaging body.
20, backlight module as claimed in claim 11 also comprises:
Optical diaphragm group is adjacent to the described exiting surface of described luminescence unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810149210A CN101676620A (en) | 2008-09-17 | 2008-09-17 | Liquid crystal display device, backlight module and light-emitting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810149210A CN101676620A (en) | 2008-09-17 | 2008-09-17 | Liquid crystal display device, backlight module and light-emitting unit |
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| CN101676620A true CN101676620A (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810149210A Pending CN101676620A (en) | 2008-09-17 | 2008-09-17 | Liquid crystal display device, backlight module and light-emitting unit |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121639A (en) * | 2010-12-08 | 2011-07-13 | 友达光电股份有限公司 | Backlight module and assembling method thereof |
| CN103090202A (en) * | 2011-10-27 | 2013-05-08 | 东莞市奥普特自动化科技有限公司 | Shadowless lighting device |
| CN103759225A (en) * | 2013-12-09 | 2014-04-30 | 广东雪莱特光电科技股份有限公司 | Optical reflector and LED (Light-Emitting Diode) luminous element |
| CN105960562A (en) * | 2014-02-11 | 2016-09-21 | 宗拓贝尔照明器材有限公司 | Elongate multipartite lens arrangement and luminaire comprising such a lens arrangement |
| CN106324744A (en) * | 2015-07-02 | 2017-01-11 | 云光科技股份有限公司 | Optical device |
| CN106773315A (en) * | 2017-01-13 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106773302A (en) * | 2016-12-30 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN108490685A (en) * | 2018-03-20 | 2018-09-04 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| WO2019007068A1 (en) * | 2017-07-03 | 2019-01-10 | 京东方科技集团股份有限公司 | Backlight module and display apparatus |
| WO2019071674A1 (en) * | 2017-10-13 | 2019-04-18 | 惠州市华星光电技术有限公司 | Liquid crystal display and backlight module thereof |
| CN109828410A (en) * | 2018-08-03 | 2019-05-31 | 海迪科（南通）光电科技有限公司 | A kind of display of novel LED backlight mould group |
| WO2020103867A1 (en) * | 2018-11-22 | 2020-05-28 | 瑞仪(广州)光电子器件有限公司 | Light-emitting mechanism and backlight module |
| CN114035375A (en) * | 2021-11-19 | 2022-02-11 | 武汉华星光电半导体显示技术有限公司 | Backlight module |
| TWI767292B (en) * | 2020-08-07 | 2022-06-11 | 瑞儀光電股份有限公司 | Direct-light-type backlight module and display device therewith |
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| CN101022145A (en) * | 2006-02-15 | 2007-08-22 | 深圳市量子光电子有限公司 | Light-emitted diode |
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Patent Citations (1)
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| CN101022145A (en) * | 2006-02-15 | 2007-08-22 | 深圳市量子光电子有限公司 | Light-emitted diode |
Cited By (25)
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| CN102121639A (en) * | 2010-12-08 | 2011-07-13 | 友达光电股份有限公司 | Backlight module and assembling method thereof |
| CN102121639B (en) * | 2010-12-08 | 2013-03-06 | 友达光电股份有限公司 | Backlight module and assembling method thereof |
| CN103090202A (en) * | 2011-10-27 | 2013-05-08 | 东莞市奥普特自动化科技有限公司 | Shadowless lighting device |
| CN103759225A (en) * | 2013-12-09 | 2014-04-30 | 广东雪莱特光电科技股份有限公司 | Optical reflector and LED (Light-Emitting Diode) luminous element |
| CN105960562A (en) * | 2014-02-11 | 2016-09-21 | 宗拓贝尔照明器材有限公司 | Elongate multipartite lens arrangement and luminaire comprising such a lens arrangement |
| CN113513737A (en) * | 2014-02-11 | 2021-10-19 | 宗拓贝尔照明器材有限公司 | Elongated multi-piece lens assembly and lamp having such a lens assembly |
| CN106324744A (en) * | 2015-07-02 | 2017-01-11 | 云光科技股份有限公司 | Optical device |
| CN106773302B (en) * | 2016-12-30 | 2020-02-28 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106773302A (en) * | 2016-12-30 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106773315A (en) * | 2017-01-13 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| WO2019007068A1 (en) * | 2017-07-03 | 2019-01-10 | 京东方科技集团股份有限公司 | Backlight module and display apparatus |
| WO2019071674A1 (en) * | 2017-10-13 | 2019-04-18 | 惠州市华星光电技术有限公司 | Liquid crystal display and backlight module thereof |
| CN108490685B (en) * | 2018-03-20 | 2020-11-27 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN108490685A (en) * | 2018-03-20 | 2018-09-04 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN109828410A (en) * | 2018-08-03 | 2019-05-31 | 海迪科（南通）光电科技有限公司 | A kind of display of novel LED backlight mould group |
| KR20210093868A (en) * | 2018-11-22 | 2021-07-28 | 라디안트 (광저우) 옵토-엘렉트로닉스 컴퍼니 리미티드 | Light emitting device and backlight module |
| TWI710833B (en) * | 2018-11-22 | 2020-11-21 | 瑞儀光電股份有限公司 | Light-emitting mechanism and backlight module |
| US11106081B2 (en) | 2018-11-22 | 2021-08-31 | Radiant(Guangzhou) Opto-Electronics Co., Ltd | Light-emitting mechanism and backlight module |
| WO2020103867A1 (en) * | 2018-11-22 | 2020-05-28 | 瑞仪(广州)光电子器件有限公司 | Light-emitting mechanism and backlight module |
| JP2022509576A (en) * | 2018-11-22 | 2022-01-21 | ラディアント（クワンチョウ）オプト‐エレクトロニクス カンパニー リミテッド | Luminous mechanism and backlight module |
| JP7277561B2 (en) | 2018-11-22 | 2023-05-19 | ラディアント（クワンチョウ）オプト‐エレクトロニクス カンパニー リミテッド | Light-emitting mechanism and backlight module |
| KR102605189B1 (en) * | 2018-11-22 | 2023-11-22 | 라디안트 (광저우) 옵토-엘렉트로닉스 컴퍼니 리미티드 | Light emitting mechanism and backlight module |
| TWI767292B (en) * | 2020-08-07 | 2022-06-11 | 瑞儀光電股份有限公司 | Direct-light-type backlight module and display device therewith |
| CN114035375A (en) * | 2021-11-19 | 2022-02-11 | 武汉华星光电半导体显示技术有限公司 | Backlight module |
| CN114035375B (en) * | 2021-11-19 | 2023-09-26 | 武汉华星光电半导体显示技术有限公司 | Backlight module |
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Application publication date: 20100324 |