CN1521543A - Light source local penetration back light source liquid crystal display - Google Patents
Light source local penetration back light source liquid crystal display Download PDFInfo
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- CN1521543A CN1521543A CNA031044352A CN03104435A CN1521543A CN 1521543 A CN1521543 A CN 1521543A CN A031044352 A CNA031044352 A CN A031044352A CN 03104435 A CN03104435 A CN 03104435A CN 1521543 A CN1521543 A CN 1521543A
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- lcd
- light source
- optical channel
- backlight
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Abstract
The invention discloses an illuminating source partial penetration backlight source LCD, wherein a reflecting layer having optical channels are formed on the inner floor of the LCD, and a micro lens film is arranged in the display unit and the backlight illuminating source, a light collecting region is formed at the relative position of the optical film and the optical channel, the incoming natural light is reflected mostly through the reflecting layer for use of the display, the illuminating source exported by the illuminating source device passes the optical channel after being focused by the light gathering region for use of the display. The invention can reinforce the overall optical exporting function for the LCD.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, relate to a kind of light source partial penetration formula backlight LCD especially.
Background technology
The arriving of information age; mean that the mankind constantly are enhanced for up-to-date information requirement; also become human enjoyment in life in the future and obtain quick abundant information; or even competition; a large amount of information all the time by transmission travel to and fro between you I between; in order effectively to obtain various information; need be dependent on many advanced persons' equipment; LCD wherein; one of at present indispensable especially visual plant; no matter be laptop computer or mobile phone handsets or the like; all need to do manifesting after the information transmission by LCD; these article also are carried on outdoor use through regular meeting by people; but the situation that effect is performed poor often takes place; its reason is; the general available light source of LCD is to come from the backlight module that this display back is provided with; it can provide the briliancy of the briliancy of light source far away from outdoor (daytime) natural light; so can reduce the contrast of this display when use daytime out of doors; cause the demonstration of display bad; and the intensity of light of reinforcement backlight module simply; not only form waste of electric energy, more lose the life-span of collocation element, and on the effect that strengthens briliancy, be very limited.
In order to solve the above problems, known way has two kinds of modes between industry at present, the one, backlight liquid crystal display template die group is made to be provided by this LCD the place ahead into the front light-source design of light source, as shown in Figure 1, it is made of a reflective liquid-crystal display 1 and the front light-source device 2 of being located at its place ahead, this front light-source device 2 has a light guide plate 21 and is located at the cold cathode fluorescent lamp 22 of light guide plate 21 sides, and is the reflecting slant A-B of continuous shape in the exiting surface design of light guide plate 21.Must plate or attach anti-reflective film 23 (AR coating) in the one side that light guide plate 21 is closed on LCD 1 in order to reduce parasitic light, its effect is roughly the light source light that makes cold cathode fluorescent lamp 22 outputs, except partly directly entering LCD 1 less and reflecting the bright dipping, after the light source of cold cathode fluorescent lamp 22 need enter LCD 1 with the light source light reflection by reflecting slant A-B, reflect bright dipping again, right this kind design has following scarce filling to exist, so do not reach the stage of volume production at present yet:
One, because the light guide plate 21 of front light-source device 2 is the tops that place LCD 1, in order not allow user's naked eyes see the surface that it is coarse, and influence quality of display pictures, therefore the requirement of precision is very high in processing, causes processing cost to increase and degree of difficulty.
Two, the reflecting slant A-B of the light guide plate 21 of front light-source device 2, its principle of reflection is general reflection, so light source is very big through the invalid light 1 shared ratio that this reflecting slant A-B reflects away, so can obtain effective light 1 of application
1Efficient is on the low side.
Three, in order to reduce parasitic light, plate or attach anti-reflective film 23 (AR coating) in light guide plate 21, this can increase difficulty and the cost of manufacturing.
The method that another is known, then as shown in Figure 2, be to establish a backlight arrangement 4 in the behind of LCD 3 light source light is provided, the bottom surface of LCD 3 covers the blooming 31 of a tool half reflection and half transmission optical characteristics in the design, backlight arrangement 4 has a light guide plate 41, light guide plate 41 sides are provided with cold cathode fluorescent lamp 42 with output light source light, and the blooming 31 of so-called half reflection and half transmission light source, the preferable light reflection/light transmissive ratio that those skilled in the art adopted is that light reflection accounts for 80%, transmittance accounts for 20%, that is natural light 1
2Light source light penetrate after this blooming 31 makes wherein one side be subjected to light, can be with 80% reflecting away of injecting light, and another side receives the self-control light 1 that comes from light guide plate 41
3After blooming 31 transmissions, only there is wherein 20% light source be able to transmission and enters LCD 3, this phenomenon will produce bad situation, for instance, supposes outdoor natural light 1
2The light source light of injecting this LCD 3 is 10000cd/cm
2The time, will have only 8000cd/cm
2Light source luminous energy reflected back LCD 3 make the usefulness of bright dipping, and from the self-control light source 1 of light guide plate 41
3If 2000cd/cm
2The time, then have only 400cd/cm
2The light source light transmissive enter the usefulness that LCD 3 is done bright dipping, the two addition also has only 8400cd/cm
2Light source light, far away from natural light 1
210000cd/cm
2So, still can cause optical contrast ratio high and have influence on the effect of demonstration, and along with natural light 1
2When strong more, the problem of the contrast that produces is also more serious.
Summary of the invention
Primary and foremost purpose of the present invention is to provide a kind of light source partial penetration formula backlight LCD, it mainly is to form to distribute in the inner bottom side of LCD to have the reflection horizon of optical channel, and in LCD and backlight arrangement, install a micro lens film (Micro Lens film) between light guide plate, this film is a light harvesting zone at the relative position of reflection horizon optical channel, after making powerful natural light inject in the LCD on the one hand by the place ahead, can make the usefulness that its natural light of high reflection transfers the LCD bright dipping to by the reflection horizon, when the light source of being exported by light guide plate sees through the light harvesting zone of blooming on the one hand, make enhancing luminous energy through optically focused, see through optical channel and inject LCD, the usefulness of liquid crystal display bright dipping, strengthen whole LCD light emitting efficiency, and the contrast of reduction and outdoor natural light, to promote the effect that shows.
For achieving the above object, the invention provides a kind of light source partial penetration formula backlight LCD, at least constitute by a LCD, the reflection horizon of being located at the LCD bottom side, the backlight arrangement being located at a micro lens film of this bottom surface, reflection horizon and being located at this micro lens film below, it is characterized in that described reflection horizon has the optical channel of the light-permeable of a plurality of distributions; Described micro lens film then is being formed with the light harvesting zone with the corresponding position of described optical channel, be used for and assemble from the light source light of backlight arrangement, make extraneous natural light after described reflective layer reflects, can be combined into one with the light source light of backlight arrangement output is passed described optical channel behind the light harvesting region clustering formed self-control light.
Preferably, the light harvesting zone of described blooming is slightly larger than the area of the optical channel in corresponding reflection horizon.
Description of drawings
Be easier to the effect understanding structure of the present invention and can reach for making, hereinafter with reference to
Accompanying drawing further describes in detail:
Fig. 1 is the application synoptic diagram of existing LCD.
Fig. 2 is the application synoptic diagram of another existing LCD.
Fig. 3 is STRUCTURE DECOMPOSITION figure according to a preferred embodiment of the present invention.
Fig. 4 is an application synoptic diagram according to a preferred embodiment of the present invention.
Embodiment
At first see also Fig. 3, show according to light source partial penetration formula backlight LCD 5 of the present invention, it mainly is the reflection horizon 51 that forms tool high reflection effect in LCD 5 inner bottom sides, and in reflection horizon 51, form the optical channel 52 of the light-permeable of a plurality of distributions, and with LCD 5 with being fixed as one by glass frame cover 53.The material in reflection horizon 51 and formation are to have multiple diverse ways to realize, and not in the scope of the present invention's investigation, are will no longer to be described herein in the following description more.In LCD 5 bottom surfaces one micro lens film 6 is set in addition, is formed with the light harvesting zone 61 of spotlight effect in this micro lens film 6 with the optical channel 52 corresponding positions in reflection horizon 51, the area in optically focused zone 61 can be slightly larger than the area of corresponding optical channel 52.Be provided with a backlight arrangement 7 below micro lens film 6, this backlight arrangement 7 comprises a light guide plate 71, reaches the cold cathode fluorescent lamp 72 in the side setting of light guide plate 71.Other for example primary element such as optical diffusion film 8, light reflecting board 9 because of being common and non-demand target of the present invention in the prior art, so will not specifically illustrate and explain in the accompanying drawings.
See also Fig. 4 again, the most important aspect of the present invention is, the natural light L when the external world
4When injecting within the LCD 5, can be through the reflection horizon 51 of its bottom side with natural light L
4High reflection is returned LCD 7 and is transferred to bright dipping and use, and the self-control light of light guide plate 71 outputs forms optically focused the self-control light L of more luminous energy through the light harvesting zone of micro lens film 6 61 o'clock
5, the optical channel 52 of penetration layer 51 is injected LCD 5 interior usefulness as bright dipping then.Obviously, the whole light emitting efficiency of LCD 5 is to combine the natural light L that injects
4And light guide plate 71 outputs penetrate the self-control light L that optical channel 52 is injected behind optically focused
5, by this design, can strengthen the required light emitting efficiency of LCD 5, and can reduce and extraneous natural light L4 between contrast.
In sum, the present invention is in conjunction with the self-control light of extraneous natural light and light guide plate output, and strengthens the light emitting efficiency of LCD, realized promoting the purpose of using effect.
Claims (2)
1, a kind of light source partial penetration formula backlight LCD, at least constitute by a LCD, the reflection horizon of being located at the LCD bottom side, the backlight arrangement being located at a micro lens film of this bottom surface, reflection horizon and being located at this micro lens film below, it is characterized in that
Described reflection horizon has the optical channel of the light-permeable of a plurality of distributions;
Described micro lens film then is being formed with the light harvesting zone with the corresponding position of described optical channel, be used for and assemble from the light source light of backlight arrangement, make extraneous natural light after described reflective layer reflects, can be combined into one with the light source light of backlight arrangement output is passed described optical channel behind the light harvesting region clustering formed self-control light.
2, light source partial penetration formula backlight LCD as claimed in claim 1, the light harvesting zone of wherein said blooming are slightly larger than the area of the optical channel in corresponding reflection horizon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104435 CN1272657C (en) | 2003-02-14 | 2003-02-14 | Light source local penetration back light source liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03104435 CN1272657C (en) | 2003-02-14 | 2003-02-14 | Light source local penetration back light source liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521543A true CN1521543A (en) | 2004-08-18 |
| CN1272657C CN1272657C (en) | 2006-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03104435 Expired - Fee Related CN1272657C (en) | 2003-02-14 | 2003-02-14 | Light source local penetration back light source liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1272657C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110543047A (en) * | 2018-05-29 | 2019-12-06 | 诚屏科技股份有限公司 | Display device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100085511A1 (en) * | 2006-11-20 | 2010-04-08 | Hisashi Watanabe | Display device |
-
2003
- 2003-02-14 CN CN 03104435 patent/CN1272657C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110543047A (en) * | 2018-05-29 | 2019-12-06 | 诚屏科技股份有限公司 | Display device |
| CN110543047B (en) * | 2018-05-29 | 2022-03-08 | 诚屏科技股份有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1272657C (en) | 2006-08-30 |
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| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20120214 |