CN102768434B - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN102768434B CN102768434B CN201210234032.9A CN201210234032A CN102768434B CN 102768434 B CN102768434 B CN 102768434B CN 201210234032 A CN201210234032 A CN 201210234032A CN 102768434 B CN102768434 B CN 102768434B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- guide plate
- light
- lamp bar
- led lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
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 electronic display technology field, particularly relate to a kind of liquid crystal indicator.
Background technology
Along with industry is day by day flourishing, mobile phone (mobilePhone), digital camera (digitalcamera), Digital Video (digitalvideocamera), notebook computer (notebook), desktop computer, televisor etc. are invariably towards future development more convenient, multi-functional and attractive in appearance.But, the display screen of mobile phone, digital camera, Digital Video, notebook computer, desktop computer and televisor is indispensable man-machine communication interface, and the display screen through the said goods can bring more facility for the operation of user.In recent years, the display screen on most mobile phone, digital camera, Digital Video, notebook computer and desktop computer and televisor is all main flow with panel of LCD.
Because the liquid crystal in panel of LCD itself is not luminous, thus, for reaching display effect, a planar light source device must be provided to panel of LCD, as backlight module, to realize Presentation Function.Prior art backlight module comprises light source, light guide plate and framework, light source is that the incidence surface of relative light guide plate is arranged, the transmission direction that light-guide plate guides light source emits beam, turns to uniform planar light outgoing to illuminate the display panels in liquid crystal display by the light that line source or pointolite transfer.Framework is for fixing each assembly of this backlight module.
Figure 1 shows that the liquid crystal display device structure schematic diagram of prior art.As shown in Figure 1, this liquid crystal display 1 comprises liquid crystal panel 11, backlight module 12 and a housing 13, this housing 13 collecting also immobile liquid crystal panel 11 and backlight module 12.This backlight module 12 comprises glue frame 121, reflector plate 122, light guide plate 123, multiple LED source 124, flexible circuit board 125, diffusion sheet 126, two brightening piece 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 light guide plate 123, makes this LED source 124 emitted light enter this light guide plate 123 inside through the incidence surface of this light guide plate 123.The scattering through site, bottom surface of the light of this light guide plate 123 inside and the reflector plate 122 being placed in this light guide plate 123 bottom surface reflect, and are evenly penetrated by the exiting surface of this light guide plate 123.This diffusion sheet 126 and two brightening pieces 127 are placed on the exiting surface of this light guide plate 123 successively, by diffusion and optically focused effect, to improve the quality exporting light, and then the area source providing liquid crystal panel 11 to show.This photo-shield strip 128, between liquid crystal panel 11 and brightening piece 127, prevents light leak.This glue frame 121 and this housing 13 are clasped, mutually with each assembly of this fixing backlight module 12.
Existing LED-backlit liquid crystal panel serviceable life is probably 30000 hours, and its test benchmark is the time that the brightness of LED drops to original intensity half.After arriving serviceable life, LED light source brightness reduces, and the picture obfuscation that user is seen, cannot reach the effect of normal viewing, wherein liquid crystal panel part is still working properly.And LED is disposable assembling, dust can be caused to enter liquid crystal panel once open, cause the driving circuit short circuit of liquid crystal panel to cause bad point, so can not open again after available liquid crystal panel sectional.So only because the brightness of LED reduces just must change whole LED-backlit liquid crystal panel, even because later stage producer's stopping production causes without the corresponding panel interchangeable.Cause very large waste like this, and cause greater loss to user.
Summary of the invention
The object of the invention is the technological deficiency for existing in prior art, and a kind of electronic display unit of replaceable LED lamp is provided.
The technical scheme adopted for realizing object of the present invention is:
A kind of liquid crystal indicator, it comprises liquid crystal panel, backlight module and housing, described housing accommodates described liquid crystal panel and described backlight module, described backlight module comprises glue frame, light guide plate and is arranged on the light source of light guide plate incident side, the printing opacity seal pad both separated is fixedly installed between described light guide plate and light source, described light source is detachably fixedly connected with glue frame or housing, and described light source is electrically connected with its power supply device is pluggable.
Described light source is LED lamp bar.
Described LED lamp bar comprises LED matrix, connecting line and connection-peg, and described LED matrix is convex shape structure, and described glue frame or housing form in described printing opacity seal pad side the inverted T-shaped embeded slot mating clamping with described LED lamp bar.
Described LED lamp bar comprises LED matrix, connecting line and connection-peg, and described glue frame or housing form L shape or wedge shape embeded slot in described printing opacity seal pad side, and described LED matrix is the structure of mating clamping with described L shape or wedge shape embeded slot.
Described LED lamp bar have in one end that LED matrix is connected with connecting line can matchingly with the gland bonnet of embeded slot upper opening clamping.
Described LED lamp bar is fixedly installed on outside described printing opacity seal pad, and LED lamp bar is contained in it with the side fixed head that housing is detachably fixedly connected with.
Described LED lamp bar and side fixed head are that screw is connected or clamping.
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 by light guide plate and LED lamp bar, make the action of LED lamp bar side can not have influence on the environment of light guide plate side, LED lamp bar is made detachably to become possibility, and then LED lamp bar fixed form forever to be installed by screw and change to drawing and pulling type buckle and fix, and set up obturator in pull LED lamp bar exit.After LED backlight bar reaches normal service life, only can change lamp bar can improve backlight illumination, reaches normal result of use, and does not need to change whole liquid crystal indicator, for user has greatly saved cost.
As preferably, adopt side type fixed form, also can improve its heat dispersion, extend the serviceable life of LED lamp bar.
Accompanying drawing explanation
Figure 1 shows that the liquid crystal display device structure schematic diagram of prior art;
Figure 2 shows that the structural representation of the liquid crystal display of first embodiment of the invention;
Fig. 3 is the LED lamp strip structure schematic diagram of first embodiment of the invention;
Fig. 4 is liquid crystal display cross section structure schematic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 2-4 is depicted as the first embodiment of the present invention, the liquid crystal display of the present embodiment comprises liquid crystal panel 2, backlight module and a housing 5, described liquid crystal panel and the stacked setting of described backlight module, described housing 5 accommodates liquid crystal panel and backlight module, wherein, the diffusion sheet of described backlight module, brightening piece and other optical filters are all very thin, are substantially all attached in light guide plate 9, closely, can regard as integrally after assembling; Liquid crystal layer is slightly thicker, general one or two millimeter, also fits with light guide plate, only has the LED lamp bar 3 as light source to be in the side of light guide plate.In described light guide plate and be fixedly installed the printing opacity seal pad 4 both separated between each assembly and LED lamp bar, light guide plate and each diffusion sheet, brightening piece etc. are opened with LED lamp bar 3 is completely isolated by namely described printing opacity seal pad 4, can ensure that the dust of LED side can not enter light guide plate side.Wherein, described printing opacity seal pad is that high light transmittance material is made, and it bonds with glue frame 1 or other forms are fixedly connected with, and its size and thickness are as the criterion to realize its isolation effect and can not affect light incidence.Preferably, it is made up of the material such as glass or acrylic.
As shown in Figure 3, LED lamp bar 3 of the present invention comprises LED lamp bar matrix 31 and connecting line 32 and is arranged on the connection-peg 33 of connecting line end.Described LED lamp bar matrix 31 cross section is convex shape structure, it comprises LED 34 and LED fixing base 35, because the serviceable life of LED particle affects by working temperature to a great extent, temperature more the high life shorter, so in order to dispel the heat better, described LED fixing base comprises in order to carry and to control PCB and the heat radiation aluminum strip of LED, and be fixed on by PCB and aluminum strip serves as heat radiator with aluminum strip can effectively improve its radiating effect, such temperature in use can not be too high.LED lamp bar adopted socket plug structure to be connected with its energy supply circuit plate, effectively can improve installation, utilize simultaneously modular connection also can improve change LED lamp bar time convenience.
Described glue frame is provided with embeded slot accordingly that mate with described LED lamp bar, described embeded slot is the inverted T-slot with described LED lamp bar form fit, namely described LED lamp bar can be inserted in described inverted T-slot and being fixedly connected with both realizing matchingly, and described embeded slot and printing opacity seal pad sides adjacent form light openings enters light guide plate with the light making LED send.That is, it is only can not form impact to its light emission in order to fixed L ED lamp bar that described embeded slot is arranged.For the cooperation of both realizations, described fixing base and the form fit of embeded slot, the fixed form arbitrarily such as L shape or wedge-shaped slot can be adopted.
For improving the sealing effectiveness at inverted T-slot upper opening place, prevent dust from entering since then, described LED lamp bar matrix faces connection line end and is formed with the gland bonnet 38 mated with described embeded slot peristome, sealing lid can mate and coordinate with embeded slot peristome inlay card, certainly also can adopt chamber stud structure etc. herein, concrete structure no longer describes at this.
Wherein, described embeded slot is formed outside on frame with also may correspond to, its arrange configuration and principle and above-mentioned with, no longer describe at this.
The liquid crystal indicator of the present embodiment, the printing opacity seal pad 35 of high printing opacity is fixedly installed in light guide plate light inlet side, utilize printing opacity seal pad to limit to a confined space by light guide plate and liquid crystal panel, can effectively avoid external dust to enter, improve its performance and stability.Adopt card slot type coordinate and adopt connect-disconnect structure between LED lamp bar and power supply device with the connected mode of glue frame LED lamp bar simultaneously, effectively can improve its dismounting property, user can buy self-changeable after the LED lamp bar of dimension, extends the serviceable life of liquid crystal display, reduces client's use cost.
Second embodiment
As the distortion of above-described embodiment, the LED lamp bar of the present embodiment adopts side fixed form, namely, the printing opacity seal pad of high light transmittance is utilized to be confined in a confined space by the parts such as light guide plate and liquid crystal panel equally, then outside printing opacity seal pad, LED lamp bar is fixedly installed, it can be fixed on glue frame on printing opacity seal pad or around printing opacity seal pad or housing, the side fixed head be fixedly connected with housing is finally utilized to protect airtight for LED lamp bar, wherein, described LED lamp bar and the fixed form of side fixed head are preferably screw and are connected or clamping, for improving the radiating effect of LED lamp bar, described side fixed head can adopt metal material, as aluminium etc.
When needs are changed, only side fixed head need be separated with housing, then LED lamp bar pulled down and it be separated the replacing can carrying out LED lamp bar with power supply device, new LED lamp bar fixedly mounted and after being electrically connected with its power supply device, side fixed head is fixedly connected with housing again.In whole operation, printing opacity seal pad remains the component sealings such as light guide plate, does not have dust and enters, and effectively can ensure that its performance is not damaged.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a liquid crystal indicator, it comprises liquid crystal panel, backlight module and housing, described housing accommodates described liquid crystal panel and described backlight module, described backlight module comprises glue frame, light guide plate and the light source being arranged on light guide plate incident side, it is characterized in that: be fixedly installed between described light guide plate and light source and both are separated to ensure that the dust of illuminator side can not enter the printing opacity seal pad of light guide plate side, described light source is detachably fixedly connected with glue frame or housing, described light source is electrically connected with its power supply device is pluggable, described light source is LED lamp bar, described LED lamp bar is fixedly installed on outside described printing opacity seal pad, and with the side fixed head that housing is detachably fixedly connected with, LED lamp bar is contained in it.
2. liquid crystal indicator as claimed in claim 1, it is characterized in that, described LED lamp bar comprises LED matrix, connecting line and connection-peg, described LED matrix is convex shape structure, and described glue frame or housing form in described printing opacity seal pad side the inverted T-shaped embeded slot mating clamping with described LED lamp bar.
3. liquid crystal indicator as claimed in claim 1, it is characterized in that, described LED lamp bar comprises LED matrix, connecting line and connection-peg, described glue frame or housing form L shape or wedge shape embeded slot in described printing opacity seal pad side, and described LED matrix is the structure of mating clamping with described L shape or wedge shape embeded slot.
4. as claimed in claim 2 or claim 3 liquid crystal indicator, is characterized in that, described LED lamp bar have in one end that LED matrix is connected with connecting line can matchingly with the gland bonnet of embeded slot upper opening clamping.
5. liquid crystal indicator as claimed in claim 1, it is characterized in that, described LED lamp bar and side fixed head are that screw is connected or clamping.
6. liquid crystal indicator as claimed in claim 1, it 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 CN102768434A (en) | 2012-11-07 |
| CN102768434B true CN102768434B (en) | 2015-02-25 |
Family
ID=47095883
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102768434B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
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 |
-
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102768434A (en) | 2012-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101416101B (en) | Liquid crystal display | |
| CN209356789U (en) | Display device | |
| CN100523934C (en) | Heat radiator and display unit | |
| US20120281151A1 (en) | Lighting device, display device and television receiver | |
| CN102768434B (en) | Liquid crystal display device | |
| CN102042536A (en) | Backlight module and display device | |
| CN104808390B (en) | Backlight module and liquid crystal display device | |
| CN102022673A (en) | Backlight unit and liquid crystal display device having the same | |
| WO2011093119A1 (en) | Illuminating device, display device, and television receiver | |
| WO2011086799A1 (en) | Lighting device, display apparatus, and television receiver apparatus | |
| CN104781726A (en) | Liquid crystal display | |
| CN202647443U (en) | LED (light emitting diode) backlight module and LED liquid crystal display device | |
| WO2013077243A1 (en) | Illumination device, display device and television receiver | |
| US9354384B2 (en) | Display device comprising a heat dissipation member having a stand-up portion projecting toward a display panel and television device | |
| US20120281148A1 (en) | Lighting device, display device and television receiver | |
| US20160054518A1 (en) | Display device | |
| KR100838332B1 (en) | Back light unit for flat-panel display | |
| CN201611049U (en) | Super-thin LED backlight | |
| KR101696456B1 (en) | Backlight unit and liquid crystal display device using the same | |
| CN218383569U (en) | Reflective backlight module of liquid crystal display | |
| CN207675976U (en) | A kind of mobile phone light guide panel of anti-white flower point | |
| KR20120047715A (en) | Light emitting diode, back light unit and liquid crystal display device having thereof | |
| CN102182968A (en) | Novel LED (light-emitted diode) backlight module | |
| US20150146109A1 (en) | Display device and television device | |
| CN203658707U (en) | Liquid crystal display module and liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150225 Termination date: 20190706 |