CN2757171Y - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN2757171Y CN2757171Y CN 200420103134 CN200420103134U CN2757171Y CN 2757171 Y CN2757171 Y CN 2757171Y CN 200420103134 CN200420103134 CN 200420103134 CN 200420103134 U CN200420103134 U CN 200420103134U CN 2757171 Y CN2757171 Y CN 2757171Y
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- guide plate
- light guide
- crystal indicator
- display panels
- 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 - Lifetime
Links
Images
Abstract
The utility model provides liquid crystal display device which comprises a first liquid crystal display panel, a second liquid crystal display panel and a backlight module, wherein the first liquid crystal display panel is arranged corresponding to the second liquid crystal display panel, the backlight module is arranged between the first liquid crystal display panel and the second liquid crystal display panel and comprises a light source, a light guiding plate, a first optical assembly and a second optical assembly, and the light guiding plate comprises a light-in surface, a first light-out surface which is intersected with the light-in surface and a second light-out surface which is opposite to the first light-out surface. The light source is arranged corresponding to the light-in surface of the light guiding plate, and the first optical assembly is arranged corresponding to the first light-out surface of the light guiding plate. The second optical assembly is arranged corresponding to the second light-out surface of the light guiding plate, and a plurality of network points are arranged on the second optical assembly.
Description
[technical field]
The utility model is about a kind of liquid crystal indicator, particularly about a kind of lCD with dual-side displaying.
[background technology]
Advantages such as the liquid crystal indicator tool is light, thin, power consumption is little are widely used in the modernized information equipment.Because the liquid crystal itself in the display panels does not have the characteristics of luminescence, therefore for reaching display effect, must provide a light supply apparatus to display panels, as backlight module, function is to provide the area source that brightness is abundant and be evenly distributed to display panels.Light guide plate is the key component of backlight module, must possess the good optical design, and the light that makes light guide plate can guide light source to send converts brightness to and colourity all can reach necessarily required area source.
(Personal Digital Assistant PDA) waits in the electronic product, needs to realize the liquid crystal indicator of double-sided display in mobile phone, personal digital assistant.
Seeing also Fig. 1, is a kind of liquid crystal indicator structural representation of prior art.This liquid crystal indicator 1 comprises two relative first display panels 10 and second display panels 20, is arranged on the backlight module 30 between this first display panels 10 and second display panels 20.
This first display panels 10 comprises two relative first substrate 11 and second substrates 12, is arranged on first liquid crystal layer 13 between this first substrate 11 and second substrate 12.This second display panels 20 comprises two relative the 3rd substrate 21 and tetrabasals 22, is arranged on second liquid crystal layer 23 between the 3rd substrate 21 and the tetrabasal 22.Wherein, this first display panels 10 is as primary display screen, and this second display panels 20 is as secondary display screen, and the display area of this first display panels 10 is greater than the display area of second display panels 20.
This backlight module 30 comprises light source 31, light guide plate 32, first optical module 33 and second optical module 34.This light guide plate 32 comprises incidence surface 35, one and first exiting surface 36 that intersects of this incidence surface 35, one second exiting surface 37 relative with this first exiting surface 36, wherein this first exiting surface 36 is relative with first display panels 10, and this second exiting surface 37 is relative with second display panels 20.This light source 31 is oppositely arranged with the incidence surface 35 of light guide plate 32.
This first optical module 33 is arranged between this light guide plate 32 and first display panels 10, it comprises first diffusion sheet 41, first prismatic lens 42 and second prismatic lens 43, and this first diffusion sheet 41, first prismatic lens 42 and second prismatic lens 43 stack gradually on the direction of first exiting surface, 36 to first display panels 10.
This second optical module 34 is arranged between this light guide plate 32 and second display panels 20, it comprises second diffusion sheet 44, prismatic glasses 45 and the 4th prismatic lens 46, and this second diffusion sheet 44, prismatic glasses 45 and the 4th prismatic lens 46 stack gradually on the direction of second exiting surface, 37 to second display panels 20.The size of this second diffusion sheet 44, prismatic glasses 45 and the 4th prismatic lens 46 equates with the display area of second display panels 20 usually.This second diffusion sheet 44 is arranged on the middle section of this second exiting surface 37, on second exiting surface 37 of this light guide plate 32 reflector plate 47 is set also, and this second diffusion sheet 44 and reflector plate 47 cover second exiting surface 37 of this light guide plate 32.
In the liquid crystal indicator 1, the light that light source 31 sends is incident to light guide plate 32, a part of light via the guiding of light guide plate 32 by the 36 even outgoing of first exiting surface, a part of light is also penetrated by first exiting surface 36 after reflecting via reflector plate 47, the light that is penetrated by first exiting surface 36 passes first optical module 33 and is incident to first display panels 10, so that first display panels 10 reaches the demonstration purpose; Light source 31 send another partly light via the guiding of light guide plate 32 by the 37 middle section outgoing of second exiting surface after, pass second optical module 34 and be incident to second display panels 20, so that second display panels 20 reaches the demonstration purpose.
In the liquid crystal indicator 1, the light that first display panels 10 is shown is made up of from the second part light of first exiting surface, 36 peripheral regions outgoing from the first part light of first exiting surface, 36 even outgoing and by the reflection of reflector plate 47 guiding through light guide plate 32, because on whole first display panels 10 of this first part distribution of light, and the second part light only is distributed on the peripheral regions of first display panels 10, therefore the display brightness of first display panels, 10 peripheral regions can be higher than the display brightness of first display panels, 10 middle sections, so this liquid crystal indicator 1 display brightness inequality.
[utility model content]
The purpose of this utility model is to provide a kind of display brightness uniform liquid crystal indicator.
The utility model provides a kind of liquid crystal indicator, it comprises first display panels, second display panels and backlight module, this first display panels and second display panels are oppositely arranged, this backlight module is between first display panels and second display panels, this backlight module comprises a light source, one light guide plate, first optical module and second optical module, this light guide plate comprises an incidence surface, one first exiting surface that intersects with this incidence surface, one second exiting surface relative with this first exiting surface, the incidence surface of this light source and light guide plate is oppositely arranged, first exiting surface of this first optical module and light guide plate is oppositely arranged, second exiting surface of this second optical module and light guide plate is oppositely arranged, and wherein on this second optical module a plurality of sites is set.
In the utility model, on second exiting surface of this light guide plate a reflector plate is set also, this reflector plate and second optical module cover second exiting surface of this light guide plate; Perhaps, on this second optical module and the second display panels facing surfaces reflector plate is set, this reflector plate and second display panels cover second optical module.
Compared with prior art: second exiting surface of this reflector plate and second optical module covering light guide plate or this reflector plate and second display panels cover second optical module, because being arranged on the site of second optical module can be to light reflection and scattering process, the light of the light of reflection and scattering and reflector plate reflection is in this light guide plate first exiting surface outgoing, because this two parts light distributed areas difference, the reflectivity of the reflectivity of site and reflector plate is near making the intensity of reflection ray approaching simultaneously, therefore comparatively even by this light guide plate first exiting surface middle section and peripheral regions emergent ray intensity, the display brightness of liquid crystal indicator is even.
[description of drawings]
Fig. 1 is the structural representation of prior art liquid crystal indicator.
Fig. 2 is the synoptic diagram of the utility model liquid crystal indicator first embodiment.
Fig. 3 is the synoptic diagram of the utility model liquid crystal indicator second embodiment.
Fig. 4 is the synoptic diagram of the utility model liquid crystal indicator the 3rd embodiment.
Fig. 5 is the synoptic diagram of the utility model liquid crystal indicator the 4th embodiment.
Fig. 6 is the synoptic diagram of the utility model liquid crystal indicator the 5th embodiment.
Fig. 7 is the synoptic diagram of the utility model liquid crystal indicator the 6th embodiment.
Fig. 8 is the synoptic diagram of the utility model liquid crystal indicator the 7th embodiment.
[embodiment]
Seeing also Fig. 2, is the synoptic diagram of the utility model liquid crystal indicator first embodiment.This liquid crystal indicator 2 comprises two relative first display panels 110 and second display panels 120, is arranged on the backlight module 130 between this first display panels 110 and second display panels 120.
This first display panels 110 comprises two relative first substrate 111 and second substrates 112, is arranged on first liquid crystal layer 113 between this first substrate 111 and second substrate 112.This second display panels 120 comprises two relative the 3rd substrate 121 and tetrabasals 122, is arranged on second liquid crystal layer 123 between the 3rd substrate 121 and the tetrabasal 122.Wherein, this first display panels 110 is as primary display screen, and this second display panels 120 is as secondary display screen, and the display area of this first display panels 110 is greater than the display area of second display panels 120.
This backlight module 130 comprises light source 131, light guide plate 132, first optical module 133 and second optical module 134.This light guide plate 132 comprises incidence surface 135, one and first exiting surface 136 that intersects of this incidence surface 135, one second exiting surface 137 relative with this first exiting surface 136, wherein this first exiting surface 136 is relative with first display panels 110, and this second exiting surface 137 is relative with second display panels 120.This light source 131 is oppositely arranged with the incidence surface 135 of light guide plate 132.
This first optical module 133 is arranged between this light guide plate 132 and first display panels 110, it comprises first diffusion sheet 141, first prismatic lens 142 and second prismatic lens 143, and this first diffusion sheet 141, first prismatic lens 142 and second prismatic lens 143 stack gradually on the direction of first exiting surface, 136 to first display panels 110.
This second optical module 134 is arranged between this light guide plate 132 and second display panels 120, it comprises second diffusion sheet 144, prismatic glasses 145 and the 4th prismatic lens 146, and this second diffusion sheet 144, prismatic glasses 145 and the 4th prismatic lens 146 stack gradually on the direction of second exiting surface, 137 to second display panels 120.The size of this second diffusion sheet 144, prismatic glasses 145 and the 4th prismatic lens 146 is identical with the display area of second display panels 120.This second diffusion sheet 144 is arranged on the middle section of this second exiting surface 137, on second exiting surface 137 of this light guide plate 132 reflector plate 147 is set also, and this second diffusion sheet 144 and reflector plate 147 cover second exiting surface 137 of this light guide plate 132.
On second exiting surface, 137 facing surfaces of this second diffusion sheet 144 and light guide plate 132 a plurality of sites 148 are set, the material of this site 148 is the high resin material of reflectivity, as PET (Polyethylene Terephthalate), polyvinylidene etc., this site 148 can be arranged on the surface of this second diffusion sheet 144 by modes such as printings, and the fringe region on these second diffusion sheet, 144 surfaces to the spacing of this site 148 of middle section increases certainly.This site 148 can partly penetrate be incident to light on it from second exiting surface 137, the partly effect of reflection and scattering.
In the liquid crystal indicator 2, the light that light source 131 sends is incident to light guide plate 132, a part of light via the guiding of light guide plate 132 by the reflection of 136 even outgoing of first exiting surface and reflector plate 147 by the 136 peripheral regions outgoing of first exiting surface after, pass first optical module 133 and be incident to first display panels 110, so that first display panels 110 reaches the demonstration purpose.Light source 131 send another partly light via the guiding of light guide plate 132 by the 137 middle section outgoing of second exiting surface after, a part of light is partly reflexed to first display panels 110 by site 148; Another part light passes between the site and site, is incident to second display panels 120 through second optical module 134, so that second display panels 120 reaches the demonstration purpose.
In the liquid crystal indicator 2, the light that first display panels 110 is shown comprises three part light compositions, first partly light be that light source 131 sends through the guiding of light guide plate 132 light from the 136 even outgoing of first exiting surface, second partly light be that light source 131 sends through the reflection of reflector plate 147 light from the 136 peripheral regions outgoing of first exiting surface, the 3rd partly light be that light source 131 sends through the site 148 the part reflection light from the 136 middle section outgoing of first exiting surface.On whole first display panels 110 of this first part distribution of light, the second part light is distributed on the peripheral regions of first display panels 110, and the 3rd part light is distributed on the middle section of first display panels 110.Therefore in the liquid crystal indicator 2, because the reflection of the part of the reflection of reflector plate 147 and site 148 makes from the brightness of light guide plate 132 first exiting surfaces, 136 middle sections and peripheral regions emergent ray more even.
Seeing also Fig. 3, is the synoptic diagram of the utility model liquid crystal indicator second embodiment.This liquid crystal indicator 3 is roughly the same with liquid crystal indicator 2 structures, and its difference with liquid crystal indicator 2 is: on second exiting surface, 237 facing surfaces of prismatic glasses 245 and light guide plate 232 a plurality of sites 248 are set.The size of this second diffusion sheet 244, prismatic glasses 245 and the 4th prismatic lens 246 is identical with the display area of second display panels 220.The material of this site 248 is the high resin material of reflectivity, as PET, polyvinylidene etc., this site 248 can be arranged on the surface of this prismatic glasses 245 by modes such as printings, and the fringe region on these prismatic glasses 245 surfaces to the spacing of this site 248 of middle section increases certainly.This site 248 can partly penetrate be incident to light on it from second diffusion sheet 244, the partly effect of reflection and scattering.
Seeing also Fig. 4, is the synoptic diagram of the utility model liquid crystal indicator the 3rd embodiment.This liquid crystal indicator 4 is roughly the same with liquid crystal indicator 2 structures, and its difference with liquid crystal indicator 2 is: on second exiting surface, 337 facing surfaces of the 4th prismatic lens 346 and light guide plate 332 a plurality of sites 348 are set.The size of this second diffusion sheet 344, prismatic glasses 345 and the 4th prismatic lens 346 is identical with the display area of second display panels 320.The material of this site 348 is the high resin material of reflectivity, as PET, polyvinylidene etc., this site 348 can be arranged on the surface of the 4th prismatic lens 346 by modes such as printings, and the fringe region on the 4th prismatic lens 346 surfaces to the spacing of this site 348 of middle section increases certainly.This site 348 can partly penetrate be incident to light on it from prismatic glasses 345, the partly effect of reflection and scattering.
Seeing also Fig. 5, is the synoptic diagram of the utility model liquid crystal indicator the 4th embodiment.This liquid crystal indicator 5 is roughly the same with liquid crystal indicator 2 structures, its difference with liquid crystal indicator 2 is: the size of this second diffusion sheet 444, prismatic glasses 445 and the 4th prismatic lens 446 is identical with the display area of first display panels 410, on second exiting surface, 437 facing surfaces of this second diffusion sheet 444 and light guide plate 432 a plurality of sites 448 are set, this reflector plate 447 is arranged on the 4th prismatic lens 446 and second display panels, 420 facing surfaces, and this reflector plate 447 and second display panels 420 cover the 4th prismatic lens 446.
Seeing also Fig. 6, is the synoptic diagram of the utility model liquid crystal indicator the 5th embodiment.This liquid crystal indicator 6 is roughly the same with liquid crystal indicator 2 structures, its difference with liquid crystal indicator 2 is: the display area of the size of this second diffusion sheet 544 and first display panels 510 is identical, the size of prismatic glasses 545 and the 4th prismatic lens 546 is identical with the display area of second display panels 520, on second exiting surface, 537 facing surfaces of this second diffusion sheet 544 and light guide plate 532 a plurality of sites 548 is set.
Seeing also Fig. 7, is the synoptic diagram of the utility model liquid crystal indicator the 6th embodiment.This liquid crystal indicator 7 is roughly the same with liquid crystal indicator 2 structures, its difference with liquid crystal indicator 2 is: the size of this second diffusion sheet 644 and prismatic glasses 645 is identical with the display area of first display panels 610, the size of the 4th prismatic lens 646 is identical with the display area of second display panels 620, on second exiting surface, 637 facing surfaces of this prismatic glasses 645 and light guide plate 632 a plurality of sites 648 is set.
Seeing also Fig. 8, is the synoptic diagram of the utility model liquid crystal indicator the 7th embodiment.This liquid crystal indicator 8 is roughly the same with liquid crystal indicator 2 structures, its difference with liquid crystal indicator 2 is: the size of this second diffusion sheet 744, prismatic glasses 745 and the 4th prismatic lens 746 is identical with the display area of first display panels 710, on second exiting surface, 737 facing surfaces of the 4th prismatic lens 746 and light guide plate 732 a plurality of sites 748 is set.
In the liquid crystal indicator of each embodiment of the utility model, that the shape of this site can be is circular-arc, ellipticity, pyramid, and the material that can change the site simultaneously makes the reflectivity of the reflectivity of this site and reflector plate approaching; In the utility model, second optical module also can cover the part fringe region of this light guide plate second exiting surface.
In the utility model, second optical module and reflector plate cover second exiting surface of light guide plate, because being arranged on the site of second optical module can be to light reflection and scattering process, the light of the light of reflection and scattering and reflector plate reflection is in this light guide plate first exiting surface outgoing, because this two parts light distributed areas difference, the reflectivity of the reflectivity of site and reflector plate is near making the intensity of reflection ray approaching simultaneously, therefore comparatively even by this light guide plate first exiting surface middle section and peripheral regions emergent ray, the display brightness of liquid crystal indicator is even.
Claims (13)
1. liquid crystal indicator, it comprises first display panels, second display panels, backlight module, this first display panels and second display panels are oppositely arranged, backlight module is between first display panels and second display panels, this backlight module comprises a light source, one light guide plate, first optical module and second optical module, this light guide plate comprises an incidence surface, one first exiting surface that intersects with this incidence surface, one second exiting surface relative with this first exiting surface, the incidence surface of this light source and light guide plate is oppositely arranged, first exiting surface of this first optical module and light guide plate is oppositely arranged, second exiting surface of this second optical module and light guide plate is oppositely arranged, and it is characterized in that: on this second optical module a plurality of sites are set.
2. liquid crystal indicator as claimed in claim 1 is characterized in that: on second exiting surface of this light guide plate a reflector plate is set also, this reflector plate and second optical module cover second exiting surface of this light guide plate.
3. liquid crystal indicator as claimed in claim 2, it is characterized in that: this first optical module comprises first diffusion sheet, first prismatic lens and second prismatic lens, and this first diffusion sheet, first prismatic lens and second prismatic lens stack gradually on the direction away from this light guide plate.
4. liquid crystal indicator as claimed in claim 3, it is characterized in that: this second optical module comprises second diffusion sheet, prismatic glasses and the 4th prismatic lens, and this second diffusion sheet, prismatic glasses and the 4th prismatic lens stack gradually on the direction away from this light guide plate.
5. liquid crystal indicator as claimed in claim 4 is characterized in that: this site is arranged on this second diffusion sheet and the light guide plate facing surfaces.
6. liquid crystal indicator as claimed in claim 4 is characterized in that: this site is arranged on this prismatic glasses and the light guide plate facing surfaces.
7. liquid crystal indicator as claimed in claim 4 is characterized in that: this site is arranged on the 4th prismatic lens and the light guide plate facing surfaces.
8. liquid crystal indicator as claimed in claim 1 is characterized in that: on this second optical module and the second display panels facing surfaces reflector plate is set.
9. liquid crystal indicator as claimed in claim 8, it is characterized in that: this first optical module comprises first diffusion sheet, first prismatic lens and second prismatic lens, and this first diffusion sheet, first prismatic lens and second prismatic lens stack gradually on the direction away from this light guide plate.
10. liquid crystal indicator as claimed in claim 9, it is characterized in that: this second optical module comprises second diffusion sheet, prismatic glasses and the 4th prismatic lens, and this second diffusion sheet, prismatic glasses and the 4th prismatic lens stack gradually on the direction away from this light guide plate.
11. liquid crystal indicator as claimed in claim 10 is characterized in that: this site is arranged on this second diffusion sheet and the light guide plate facing surfaces.
12. liquid crystal indicator as claimed in claim 10 is characterized in that: this site is arranged on this prismatic glasses and the light guide plate facing surfaces.
13. liquid crystal indicator as claimed in claim 10 is characterized in that: this site is arranged on the 4th prismatic lens and the light guide plate facing surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420103134 CN2757171Y (en) | 2004-12-18 | 2004-12-18 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420103134 CN2757171Y (en) | 2004-12-18 | 2004-12-18 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2757171Y true CN2757171Y (en) | 2006-02-08 |
Family
ID=35965558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420103134 Expired - Lifetime CN2757171Y (en) | 2004-12-18 | 2004-12-18 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2757171Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101809361B (en) * | 2007-10-19 | 2012-09-05 | 夏普株式会社 | Bifacial light emitting backlight |
| CN104880853A (en) * | 2015-06-18 | 2015-09-02 | 武汉华星光电技术有限公司 | LCD (Liquid Crystal Display) device and LGP (Light Guide Plate) for LCD device |
-
2004
- 2004-12-18 CN CN 200420103134 patent/CN2757171Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101809361B (en) * | 2007-10-19 | 2012-09-05 | 夏普株式会社 | Bifacial light emitting backlight |
| CN104880853A (en) * | 2015-06-18 | 2015-09-02 | 武汉华星光电技术有限公司 | LCD (Liquid Crystal Display) device and LGP (Light Guide Plate) for LCD device |
| WO2016201748A1 (en) * | 2015-06-18 | 2016-12-22 | 武汉华星光电技术有限公司 | Liquid crystal display device and light guide plate for same |
| CN104880853B (en) * | 2015-06-18 | 2018-05-08 | 武汉华星光电技术有限公司 | Liquid crystal display device and the light guide plate for liquid crystal display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101608127B1 (en) | Optical diffusion film and liquid crystal display backlight source using the same | |
| CN1773345A (en) | Light conducting plate and back light module | |
| CN202676940U (en) | Light guide plate, lateral entering type backlight module, and liquid crystal display device | |
| CN1584703A (en) | Liquid crystal display device using dual light units | |
| US20140104885A1 (en) | Light guide plate, backlight module and display device | |
| CN1932614A (en) | Backlight module for a double-sided LCD device | |
| CN101051153A (en) | Back light module | |
| CN1967320A (en) | Base plate and LCD device | |
| CN101344682B (en) | Backlight module | |
| CN100451696C (en) | Light conducting board and backlight module using same | |
| EP1900999A1 (en) | Backlight assembly and display apparatus having the same | |
| CN2757171Y (en) | Liquid crystal display device | |
| CN2898855Y (en) | Intensifying diffusion structure | |
| CN1877420A (en) | Light source diffuse module, back light module, and liquid crystal display device | |
| CN2763846Y (en) | Light guiding board | |
| CN102003641A (en) | Backlight unit and display apparatus using thereof | |
| CN1797092A (en) | LCD device | |
| CN105223729A (en) | A kind of liquid crystal indicator | |
| CN1220102C (en) | A double-faced light guiding plate and LCD having the same | |
| CN101051149A (en) | Side light type back light module | |
| CN1959498A (en) | Display with double faces | |
| CN1601353A (en) | Backlight modular of Two-D display | |
| CN1959491A (en) | Light guidance plate | |
| CN2762178Y (en) | Improved structure of light guiding of light conducting board | |
| CN1260602C (en) | Double-faced liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141218 Granted publication date: 20060208 |