CN102768434A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN102768434A CN102768434A CN2012102340329A CN201210234032A CN102768434A CN 102768434 A CN102768434 A CN 102768434A CN 2012102340329 A CN2012102340329 A CN 2012102340329A CN 201210234032 A CN201210234032 A CN 201210234032A CN 102768434 A CN102768434 A CN 102768434A
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- led lamp
- liquid crystal
- light
- lamp bar
- light source
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Abstract
The invention discloses a liquid crystal display device, which comprises a liquid crystal display panel, a backlight module and an outer frame, wherein the liquid crystal display panel and the backlight module are accommodated in the outer frame; the backlight module comprises a rubber frame, a light guide plate and a light source which is arranged on a light entering side of the light guide plate; a light-transmitting sealing plate for separating the light guide plate from the light source is fixedly arranged between the light guide plate from the light source; the light source is detachably and fixedly connected with the rubber frame or the outer frame; and the light source is electrically connected with an energy supply device in a pluggable mode. The light guide plate is separated from a light-emitting diode (LED) light bar through the light-transmitting sealing plate with high transmittance, so that the environment of the light guide plate is not influenced by the action of the LED light bar; the fixing mode of the LED light bar is changed into a mode of fixedly fastening the LED light bar in a withdrawing way, and an airtight device is arranged at an outlet of the withdrawing LED light bar. When the normal service life of the LED light bar is reached, the backlight brightness and a normal using effect can be achieved by only replacing the light bar instead of the whole liquid crystal display device, and the user cost is greatly reduced.
Description
Technical field
The present invention relates to the electronic display technology field, particularly relate to a kind of liquid crystal indicator.
Background technology
Along with industry is flourishing day by day, mobile phone (mobilePhone), digital camera (digitalcamera), DV (digitalvideocamera), notebook computer (notebook), desktop computer, televisor etc. develop towards direction more convenient, multi-functional and attractive in appearance invariably.Yet; The display screen of mobile phone, digital camera, DV, notebook computer, desktop computer and televisor is indispensable man-machine communication interface, and the display screen that sees through the said goods can bring more facility for user's operation.In recent years, the display screen on most mobile phone, digital camera, DV, notebook computer and desktop computer and the televisor all is main flow with the panel of LCD.
Because the liquid crystal itself in the panel of LCD is not luminous, thereby, for reaching display effect, a planar light source device is provided must for the LCD panel, like module backlight, to realize Presentation Function.Prior art module backlight comprises light source, LGP and framework; Light source is the incidence surface setting of relative LGP; The transmission direction that the light-guide plate guides light source emits beam, the light that line source or pointolite are transferred turns to the outgoing of uniform in-plane light to illuminate the display panels in the LCD.Framework is used for fixing each assembly of this module backlight.
Shown in Figure 1 is the liquid crystal display device structure synoptic diagram of prior art.As shown in Figure 1, this LCD 1 comprises a liquid crystal panel 11, one module 12 backlight and a housing 13, and this housing 13 is accommodated and immobile liquid crystal panel 11 and module backlight 12.This module 12 backlight comprises a glue frame 121, a reflector plate 122, a LGP 123, a plurality of LED source 124, a flexible circuit board 125, a diffusion sheet 126, two brightening pieces 127 and a photo-shield strip 128.This LED source 124 is connected with this flexible circuit board 125; This flexible circuit board 125 provides luminous required electric current to this LED source 124; This LED source 124 is positioned near the incidence surface of this LGP 123, makes these LED source 124 emitted lights get into these LGP 123 inside through the incidence surface of this LGP 123.The inner light of this LGP 123 is through the scattering of site, bottom surface and reflector plate 122 reflections that place these LGP 123 bottom surfaces, evenly penetrated by the exiting surface of this LGP 123.This diffusion sheet 126 and two brightening pieces 127 are placed on the exiting surface of this LGP 123 successively, through diffusion and optically focused effect, with the quality of improvement output light, and then provide liquid crystal panel 11 to show the area source of usefulness.This photo-shield strip 128 prevents light leak between liquid crystal panel 11 and brightening piece 127.This glue frame 121 is clasped with this housing 13 each other, with each assembly of this fixing module 12 backlight.
Existing LED-backlit liquid crystal panel serviceable life probably is about 30000 hours, and its test benchmark is that the brightness of LED lamp drops to the half the time of original intensity.Led light source brightness reduces after arriving serviceable life, and the picture that the user is seen shades, and can't reach the effect of normal viewing, and wherein the liquid crystal panel part is still in proper working order.And the LED lamp is disposable assembling, can cause dust to get into liquid crystal panel in case open, and causes the driving circuit short circuit of liquid crystal panel to cause bad point, so can not open after the assembling of available liquid crystal panel again.Can change so only because the brightness of LED lamp reduction just must be changed whole LED liquid crystal panel backlight, even because later stage producer's stopping production causes not having the corresponding panel.Cause very large waste like this, and cause greater loss to the user.
Summary of the invention
The objective of the invention is to be directed against the technological deficiency that exists in the prior art, and a kind of electronic display unit of replaceable LED lamp is provided.
For realizing that the technical scheme that the object of the invention adopted is:
A kind of liquid crystal indicator; It comprises liquid crystal panel, module backlight and housing; Said housing is accommodated said liquid crystal panel and said module backlight, and said module backlight comprises glue frame, LGP and is arranged on the light source of LGP incident side, is set with the printing opacity seal pad that both are separated between said LGP and light source; Said light source detachably is fixedly connected with glue frame or housing, and described light source can plug with its power supply device and be electrically connected.
Described light source is a LED lamp bar.
Said LED lamp bar comprises LED lamp matrix, connecting line and connection-peg, and described LED lamp matrix is the convex shape structure, forms the inverted T-shaped embeded slot that matees clamping with described LED lamp bar in said printing opacity seal pad side on described glue frame or the housing.
Said LED lamp bar comprises LED lamp matrix, connecting line and connection-peg, forms L shaped or the wedge shape embeded slot in said printing opacity seal pad side on described glue frame or the housing, and described LED lamp matrix is the structure with the clamping of described L shaped or wedge shape embeded slot coupling.
The end that described LED lamp bar links to each other with connecting line at LED lamp matrix have can mate with the gland bonnet of embeded slot upper opening clamping.
Described LED lamp bar is fixedly installed on the said printing opacity seal pad outside, and the side fixed head that detachably is fixedly connected with housing is with the containing of LED lamp bar in it.
Described LED lamp bar is that screw is connected or clamping with the side fixed head.
Described side fixed head is made of metal.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts the printing opacity seal pad of high printing opacity to isolate with LGP and LED lamp bar; Make the action of LED lamp bar side can not have influence on the environment of LGP side; Make LED lamp bar detachably become possibility; And then LED lamp bar fixed form changed to the drawing and pulling type snap fit by permanent installation of screw, and set up obturator in pull LED lamp bar exit.After LED-backlit lamp bar reaches normal serviceable life, the lamp bar can be only changed and backlight illumination can be improved, reach normal result of use, and need not change entire liquid crystal display device, for the user has greatly practiced thrift cost.
As preferably, adopt the side type fixed form, also can improve its heat dispersion, prolong the serviceable life of LED lamp bar.
Description of drawings
Shown in Figure 1 is the liquid crystal display device structure synoptic diagram of prior art;
Shown in Figure 2 is the structural representation of the LCD of first embodiment of the invention;
Fig. 3 is the LED lamp bar structural representation of first embodiment of the invention;
Fig. 4 is a LCD cross section structure synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explain.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 2-4 is depicted as the first embodiment of the present invention, and the LCD of present embodiment comprises a liquid crystal panel 2, one module backlight and a housing 5, said liquid crystal panel and the range upon range of setting of said module backlight; Said housing 5 is accommodated liquid crystal panel and module backlight; Wherein, the diffusion sheet of said module backlight, brightening piece and other optical filters are all extremely thin, all are attached to basically on the LGP 9; Very tight, can regard one after the assembling as; Liquid crystal layer is slightly thicker, and general one or two millimeter, also fit with LGP, have only the side that is in LGP as the LED lamp bar 3 of light source.Between said LGP and each assembly and LED lamp bar, be set with the printing opacity seal pad 4 that both are separated; Being described printing opacity seal pad 4 keeps apart LGP and each diffusion sheet, brightening piece etc. with LED lamp bar 3 fully, can guarantee that the dust of LED lamp side can not get into the LGP side.Wherein, described printing opacity seal pad is that the high light transmittance material is processed, and it is connected with glue frame 9 bondings or other form fix, and its size and thickness are as the criterion to realize its isolation effect and can not influence light incident.Preferably, it is processed by materials such as glass or acrylics.
As shown in Figure 3, LED lamp bar 3 of the present invention comprises LED lamp bar matrix 31 and connecting line 32 and the connection-peg 33 that is arranged on the connecting line end.Described LED lamp bar matrix 31 cross sections are the convex shape structure; It comprises LED lamp 34 and LED fixing base 35 because influenced by working temperature the serviceable life of LED lamp particle, temperature more the high life short more; So for heat radiation better; Described LED fixing base comprises in order to carrying and the PCB and the heat radiation aluminum strip of control LED lamp, PCB is fixed on serves as heat radiator with aluminum strip on the aluminum strip and can effectively improve its radiating effect, and temperature in use can be too not high like this.LED lamp strip adoption connection-peg structure is connected with its energy supply circuit plate, can effectively improves installation property, the convenience when utilizing modular connection also can improve replacing LED lamp bar simultaneously.
On described glue frame, be provided with embeded slot accordingly with described LED lamp bar coupling; Described embeded slot is the inverted T-slot that matees with described LED lamp strip; Be that described LED lamp bar can insert in the described inverted T-slot with mating and realizes both fixed connections, and described embeded slot and printing opacity seal pad sides adjacent forms light openings so that the light that the LED lamp sends gets into LGP.That is, described embeded slot setting only is can not constitute influence to its light emission in order to fixed L ED lamp bar.For realizing both cooperations, the form fit of described fixing base and embeded slot gets final product, and can adopt fixed form arbitrarily such as L shaped or wedge-shaped slot.
For improving the sealing effectiveness at inverted T-slot upper opening place; Prevent that dust from getting into since then; Described LED lamp bar matrix faces the connection line end and is formed with the gland bonnet 38 that matees with described embeded slot peristome; The sealing lid can mate with holding tank peristome inlay card and cooperate, and also can adopt chamber stud structure etc. here certainly, and concrete structure is no longer described at this.
Wherein, described holding tank also can be formed on the housing accordingly, and it is provided with structure and principle and above-mentioned same, no longer describes at this.
The liquid crystal indicator of present embodiment; Fixedly install the printing opacity seal pad 35 of high printing opacity in LGP light inlet one side; Utilize the printing opacity seal pad to limit to a confined space, can effectively avoid external dust to get into, improve its performance and stability with LGP and liquid crystal panel.Adopt card slot type to cooperate the connected mode of LED lamp bar and glue frame simultaneously and LED lamp bar and power supply device between adopt connect-disconnect structure; Can effectively improve its dismounting property; The user changes after can buying the LED lamp bar of corresponding specification voluntarily, prolongs the serviceable life of LCD, reduces client's use cost.
Second embodiment
Distortion as the foregoing description; The LED lamp strip adoption side fixed form of present embodiment promptly, utilizes the printing opacity seal pad of high light transmittance to be confined in the confined space with parts such as LGP and liquid crystal panels equally; Fixedly install LED lamp bar in the printing opacity seal pad outside then; It can be fixed on the printing opacity seal pad or the printing opacity seal pad around glue frame or housing on, utilize the side fixed head that is fixedly connected with housing with airtight the protecting of LED lamp bar, wherein at last; The fixed form of described LED lamp bar and side fixed head is preferably screw and is connected perhaps clamping; Be to improve the radiating effect of LED lamp bar, described side fixed head can adopt metal material, like aluminium etc.
When needs are changed; Only need the side fixed head is separated with housing; Then LED lamp bar is pulled down and it is separated with power supply device and can carry out the replacing of LED lamp bar, get final product with new LED lamp bar fixed installation and with the side fixed head being fixedly connected with housing once more after its power supply device is electrically connected.In whole operation, the printing opacity seal pad remains the sealing of assembly such as LGP, does not have dust and gets into, and can guarantee effectively that its performance is not damaged.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (8)
1. liquid crystal indicator; It comprises liquid crystal panel, module backlight and housing; Said housing is accommodated said liquid crystal panel and said module backlight, and said module backlight comprises glue frame, LGP and is arranged on the light source of LGP incident side, it is characterized in that: be set with the printing opacity seal pad that both are separated between said LGP and light source; Said light source detachably is fixedly connected with glue frame or housing, and described light source can plug with its power supply device and be electrically connected.
2. liquid crystal indicator as claimed in claim 1 is characterized in that, described light source is a LED lamp bar.
3. liquid crystal indicator as claimed in claim 2; It is characterized in that; Said LED lamp bar comprises LED lamp matrix, connecting line and connection-peg; Described LED lamp matrix is the convex shape structure, forms the inverted T-shaped embeded slot that matees clamping with described LED lamp bar in said printing opacity seal pad side on described glue frame or the housing.
4. liquid crystal indicator as claimed in claim 2; It is characterized in that; Said LED lamp bar comprises LED lamp matrix, connecting line and connection-peg; Form L shaped or the wedge shape embeded slot in said printing opacity seal pad side on described glue frame or the housing, described LED lamp matrix is the structure with the clamping of described L shaped or wedge shape embeded slot coupling.
5. like claim 3 or 4 described liquid crystal indicators, it is characterized in that, the end that described LED lamp bar links to each other with connecting line at LED lamp matrix have can mate with the gland bonnet of embeded slot upper opening clamping.
6. liquid crystal indicator as claimed in claim 2 is characterized in that, described LED lamp bar is fixedly installed on the said printing opacity seal pad outside, and the side fixed head that detachably is fixedly connected with housing is with the containing of LED lamp bar in it.
7. liquid crystal indicator as claimed in claim 5 is characterized in that, described LED lamp bar is that screw is connected or clamping with the side fixed head.
8. liquid crystal indicator as claimed in claim 5 is characterized in that, described side fixed head is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234032.9A CN102768434B (en) | 2012-07-06 | 2012-07-06 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234032.9A CN102768434B (en) | 2012-07-06 | 2012-07-06 | Liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102768434A true CN102768434A (en) | 2012-11-07 |
| CN102768434B CN102768434B (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210234032.9A Expired - Fee Related CN102768434B (en) | 2012-07-06 | 2012-07-06 | Liquid crystal display device |
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| CN (1) | CN102768434B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491703A (en) * | 2015-12-31 | 2016-04-13 | 浙江唯唯光电科技有限公司 | Low-power ultra-low optical attenuation semiconductor light source |
| CN105627112A (en) * | 2015-12-31 | 2016-06-01 | 浙江唯唯光电科技有限公司 | High-frequency-driven low-heat-resistance LED light source |
| CN105824150A (en) * | 2016-05-06 | 2016-08-03 | 深圳市华星光电技术有限公司 | Backlight unit and mounting bracket thereof |
| CN105842895A (en) * | 2016-05-18 | 2016-08-10 | 合肥惠科金扬科技有限公司 | Middle frame of liquid crystal display device and liquid crystal display device |
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| CN1534347A (en) * | 2003-04-01 | 2004-10-06 | 友达光电股份有限公司 | Poor light module and liquid crystal display device |
| JP2007149501A (en) * | 2005-11-28 | 2007-06-14 | Sharp Corp | Backlight unit and liquid crystal display device |
| CN101131500A (en) * | 2006-08-23 | 2008-02-27 | 中华映管股份有限公司 | Light source fixing structure of backlight component |
| CN101393354A (en) * | 2007-09-21 | 2009-03-25 | 扬昕精密股份有限公司 | Backlight module and LCD using the backlight module |
| CN201540420U (en) * | 2009-10-15 | 2010-08-04 | 天津三星电子显示器有限公司 | Backlight lamp-replaceable type LCD device |
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2012
- 2012-07-06 CN CN201210234032.9A patent/CN102768434B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1534347A (en) * | 2003-04-01 | 2004-10-06 | 友达光电股份有限公司 | Poor light module and liquid crystal display device |
| JP2007149501A (en) * | 2005-11-28 | 2007-06-14 | Sharp Corp | Backlight unit and liquid crystal display device |
| CN101131500A (en) * | 2006-08-23 | 2008-02-27 | 中华映管股份有限公司 | Light source fixing structure of backlight component |
| CN101393354A (en) * | 2007-09-21 | 2009-03-25 | 扬昕精密股份有限公司 | Backlight module and LCD using the backlight module |
| CN201540420U (en) * | 2009-10-15 | 2010-08-04 | 天津三星电子显示器有限公司 | Backlight lamp-replaceable type LCD device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491703A (en) * | 2015-12-31 | 2016-04-13 | 浙江唯唯光电科技有限公司 | Low-power ultra-low optical attenuation semiconductor light source |
| CN105627112A (en) * | 2015-12-31 | 2016-06-01 | 浙江唯唯光电科技有限公司 | High-frequency-driven low-heat-resistance LED light source |
| CN105824150A (en) * | 2016-05-06 | 2016-08-03 | 深圳市华星光电技术有限公司 | Backlight unit and mounting bracket thereof |
| WO2017190384A1 (en) * | 2016-05-06 | 2017-11-09 | 深圳市华星光电技术有限公司 | Display apparatus, backlight unit and mounting bracket thereof |
| CN105842895A (en) * | 2016-05-18 | 2016-08-10 | 合肥惠科金扬科技有限公司 | Middle frame of liquid crystal display device and liquid crystal display device |
| CN105842895B (en) * | 2016-05-18 | 2023-05-16 | 合肥惠科金扬科技有限公司 | Liquid crystal display device middle frame and liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102768434B (en) | 2015-02-25 |
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Granted publication date: 20150225 Termination date: 20190706 |