CN1987598A - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
- Publication number
- CN1987598A CN1987598A CNA2005101211814A CN200510121181A CN1987598A CN 1987598 A CN1987598 A CN 1987598A CN A2005101211814 A CNA2005101211814 A CN A2005101211814A CN 200510121181 A CN200510121181 A CN 200510121181A CN 1987598 A CN1987598 A CN 1987598A
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- China
- Prior art keywords
- light
- lcd
- guide plate
- light guide
- leaded
- 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.)
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Abstract
The liquid crystal display includes a crystal display faceplate and backlight module. The backlight module includes at least a spot light source and a light guide plate. The light guide plate includes a light incidence face. The light source is setup near to the light incidence face of the light guide plate. The backlight module includes a light guide bar further. The light guide bar includes a light entering face and a light coming out face intersected to the light entering face. The light source is located at side of the light entering face. The light coming out face of the light guide bar is setup near to the light incidence face of the light incidence face.
Description
[technical field]
The invention relates to a kind of light guide plate and adopt the module backlight of this light guide plate.
[background technology]
Because the liquid crystal itself in the display panels is not luminous, thereby for reaching display effect, needing provides a light supply apparatus to display panels, as module backlight, to realize Presentation Function.
The module backlight of prior art mainly is made up of light source and light guide plate.Wherein, this light source can be arranged on light guide plate one side or two sides adjacent, and light emission is arrived this light guide plate.The effect of this light guide plate is the transmission direction of direct light line, and light is evenly penetrated by the exiting surface of light guide plate.
A kind of module backlight of prior art as shown in Figure 1, this module 10 backlight comprises a light guide plate 11 and a light source 12.
This light guide plate 11 is plate entities, and it comprises two light entrance faces 111, a light-emitting face 112 and a bottom surface 113, these two light entrance faces, 111 adjacent settings, and this light-emitting face 112 and light entrance face 111 intersect, and this bottom surface 113 and light-emitting face 112 are oppositely arranged.
This light source 12 is that (Cold Cathode FluorescentLamp, CCFL), the corner of this light source 12 is located at the corner that two light entrance faces 111 intersect to L type cathode fluorescent tube, and light source 12 is provided with around two light entrance faces 111 of light guide plate 11.
The light that light source 12 sends enters light guide plate 11 inside through light entrance face 111, the scattering of the light of light guide plate 11 inside 113 sites (figure does not show) through the bottom surface, light-emitting face 112 by this light guide plate 11 evenly penetrates, and shows the area source of usefulness so that liquid crystal panel (figure does not show) to be provided.
But this light source 12 is cathode fluorescent tubes, and it is elongated glass tube, when bump that is subjected to external force or vibrations, causes that easily light guide plate 11 and light source 12 clash into mutually, to such an extent as to damage light source 12.And cathode fluorescent tube contains heavy metals such as lead, mercury, mercury, and this light source 12 breaks, and the heavy metal that discharges will damage human body.
[summary of the invention]
Fragile for the light source that overcomes the prior art LCD, and unsafe problem is necessary to provide a kind of LCD that improves light source life.
A kind of LCD, it comprises a liquid crystal panel and a module backlight, this module backlight comprises an at least one pointolite and a light guide plate, this light guide plate comprises at least one light entrance face, and this light source closes on the light entrance face setting of light guide plate, wherein, this module backlight further comprises a leaded light bar, this leaded light bar comprises at least one incidence surface and one and the exiting surface that intersects of incidence surface, and this light source is positioned at incidence surface one side of leaded light bar, and the exiting surface of this leaded light bar closes on the light entrance face setting of light guide plate.
Compared to prior art, because the pointolite of this backlight liquid crystal display module is a LED source, and this module backlight comprises the leaded light bar, because of the characteristics of LED source have life-span length, power saving, advantages such as reaction velocity is fast, fiduciary level is high, environmental protection, safety, this LED source cooperates the leaded light bar to replace cathode fluorescent tube, thus the light source life and the security that improve this LCD.
[description of drawings]
Fig. 1 is the perspective exploded view of prior art module backlight.
Fig. 2 is the synoptic diagram of LCD first embodiment of the present invention.
Fig. 3 is the perspective exploded view of backlight liquid crystal display module shown in Figure 2.
Fig. 4 is the perspective exploded view of the module backlight of LCD second embodiment of the present invention.
[embodiment]
Seeing also Fig. 2, is the synoptic diagram of LCD first embodiment of the present invention.This LCD 2 comprises a module 20 backlight and a liquid crystal panel 50.This module 20 backlight and liquid crystal panel 50 stacked settings.
Seeing also Fig. 3, is the perspective exploded view of backlight liquid crystal display module shown in Figure 2.This module 20 backlight comprises a light guide plate 21, a leaded light bar 22, two LED source 23 and a reflex housing 24.
This light guide plate 21 is plate entities, and it comprises a light entrance face 211, a light-emitting face 212 and a bottom surface 213, and this light entrance face 211 and light-emitting face 212 intersect, and this bottom surface 213 and light-emitting face 212 are oppositely arranged.This leaded light bar 22 is long strip types, and this leaded light bar 22 comprises two incidence surfaces 221 and an exiting surface 222, and this two incidence surface 221 is oppositely arranged, and this exiting surface 222 and incidence surface 221 intersect.The space that this reflex housing 24 is centered on is a long strip type.
This two LED source 23 lays respectively at two incidence surfaces, 221 sides of leaded light bar 22, the light entrance face 211 of the exiting surface 222 contiguous light guide plate 21 of this leaded light bar 22 is provided with, and this reflex housing 24 coats leaded light bar 22 and removes incidence surface 221 and the remainder of exiting surface 222 and corresponding a plurality of sides of two LED source 23.
The light that this two LED source 23 is sent enters this leaded light bar 22 inside through two incidence surfaces 221 respectively.The light of these leaded light bar 22 inside is through the reflection around the reflex housing 24 of this leaded light bar 22, evenly penetrated by the exiting surface 222 of this leaded light bar 22.This ejaculation light enters this light guide plate 21 inside through light entrance face 211 again.The scattering of the light of these light guide plate 21 inside 213 sites (figure does not show) through the bottom surface is evenly penetrated by light-emitting face 212, shows the area source of usefulness so that liquid crystal panel (figure does not show) to be provided.
This reflex housing 24 also can constitute by pasting double faced adhesive tape on the circuit board that electric current is provided to LED source 23, this double faced adhesive tape comprises the black and white two sides, this white mask adularescent reflection horizon, the black side of this double faced adhesive tape is pasted circuit board, and white face is pasted leaded light bar 22 and LED source 23.
The material of this light guide plate 21 and leaded light bar 22 be polymethyl methacrylate (Polymethyl Methacrylate, PMMA) or polycarbonate (polycarbonate, PC), this light guide plate 21 and leaded light bar 22 equal ejection formations.
The module backlight 20 of present embodiment also can omit wherein LED source 23 from two LED source 23.
Because the characteristics of this LED source 23 have life-span length, power saving, advantages such as reaction velocity is fast, fiduciary level is high, environmental protection, safety.This LED source 23 cooperates leaded light bar 22 can replace cathode fluorescent tube.
Seeing also Fig. 3, is the perspective exploded view of the module backlight of LCD second embodiment of the present invention.The module backlight 20 that is different from first embodiment, this module 30 backlight comprise a light guide plate 31, two leaded light bars 32, two LED source 33 and a reflex housing 34.
This light guide plate 31 comprises two light entrance faces 311, a light-emitting face 312 and a bottom surface 313, and this two light entrance face 311 intersects, and this light-emitting face 312 and two light entrance faces 311 intersect, and this bottom surface 313 and light-emitting face 312 are oppositely arranged.Each leaded light bar 32 comprises an incidence surface 321 and an exiting surface 322, and this exiting surface 322 and incidence surface 321 intersect.The space that this reflex housing 34 is centered on is the L type.
This two leaded lights bar 32 intersects and is the L type, two light entrance faces 311 of two exiting surfaces, the 322 contiguous light guide plate 31 of this two leaded lights bar 32 are provided with, this two LED source 33 lays respectively at two incidence surfaces, 321 sides of two leaded light bars 32, and this reflex housing 34 removes incidence surface 321 and the remainder of exiting surface 322 and corresponding a plurality of sides of two LED source 33 around two leaded light bars 32.
The light that this two LED source 33 is sent enters corresponding leaded light bar 32 inside respectively.The light of these two leaded lights bar, 32 inside is through reflex housing 34 reflection, evenly penetrated by the exiting surface 322 of two leaded light bars 32.This ejaculation light enters this light guide plate 31 inside through light entrance face 311 again.The scattering of the light of these light guide plate 31 inside 313 sites (figure does not show) through the bottom surface is evenly penetrated by light-emitting face 312, shows the area source of usefulness so that liquid crystal panel (figure does not show) to be provided.
Because the characteristics of this LED source 33 have life-span length, power saving, advantages such as reaction velocity is fast, fiduciary level is high, environmental protection, safety.This two LED source 33 cooperates two leaded light bars 32 to replace L type cathode fluorescent tube.
Claims (10)
1. LCD, it comprises a liquid crystal panel and a module backlight, this module backlight comprises an at least one pointolite and a light guide plate, this light guide plate comprises at least one light entrance face, and this light source closes on the light entrance face setting of light guide plate, wherein, this module backlight further comprises a leaded light bar, this leaded light bar comprises at least one incidence surface and one and the exiting surface that intersects of incidence surface, and this light source is positioned at incidence surface one side of leaded light bar, and the exiting surface of this leaded light bar closes on the light entrance face setting of light guide plate.
2. LCD as claimed in claim 1 is characterized in that: this module backlight further comprises a reflex housing.
3. LCD as claimed in claim 1 is characterized in that: this leaded light bar is a long strip type.
4. LCD as claimed in claim 2 is characterized in that: this reflex housing coats the leaded light bar and removes incidence surface and the remainder of exiting surface and the respective face of light source.
5. LCD as claimed in claim 4 is characterized in that: the space that this reflex housing centers on is a long strip type.
6. LCD as claimed in claim 4 is characterized in that: the space that this reflex housing centers on is the L type.
7. LCD as claimed in claim 2 is characterized in that: this reflex housing can be pasted double faced adhesive tape by circuit board and constitute.
8. LCD as claimed in claim 7 is characterized in that: this double faced adhesive tape comprises the black and white two sides, white mask adularescent reflection horizon.
9. LCD as claimed in claim 8 is characterized in that: the black side of this double faced adhesive tape is pasted circuit board, and white face is pasted light source and leaded light bar.
10. LCD as claimed in claim 1 is characterized in that: this light source is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101211814A CN1987598A (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101211814A CN1987598A (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1987598A true CN1987598A (en) | 2007-06-27 |
Family
ID=38184450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101211814A Pending CN1987598A (en) | 2005-12-23 | 2005-12-23 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1987598A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841709A (en) * | 2011-06-22 | 2012-12-26 | 原相科技股份有限公司 | Light guide assembly and optical touch module with same |
| US9308866B2 (en) | 2012-03-14 | 2016-04-12 | Magna Auteca Ag | Group of exterior mirrors |
| CN112771308A (en) * | 2019-08-02 | 2021-05-07 | 京东方科技集团股份有限公司 | Light guide assembly, light source module and display device |
-
2005
- 2005-12-23 CN CNA2005101211814A patent/CN1987598A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841709A (en) * | 2011-06-22 | 2012-12-26 | 原相科技股份有限公司 | Light guide assembly and optical touch module with same |
| US9308866B2 (en) | 2012-03-14 | 2016-04-12 | Magna Auteca Ag | Group of exterior mirrors |
| CN112771308A (en) * | 2019-08-02 | 2021-05-07 | 京东方科技集团股份有限公司 | Light guide assembly, light source module and display device |
| CN112771308B (en) * | 2019-08-02 | 2023-03-10 | 京东方科技集团股份有限公司 | Light guide assembly, light source module and display device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |