CN101813295B - Direct type light guide plate structure of double-sided liquid crystal display - Google Patents
Direct type light guide plate structure of double-sided liquid crystal display Download PDFInfo
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- CN101813295B CN101813295B CN2010101378917A CN201010137891A CN101813295B CN 101813295 B CN101813295 B CN 101813295B CN 2010101378917 A CN2010101378917 A CN 2010101378917A CN 201010137891 A CN201010137891 A CN 201010137891A CN 101813295 B CN101813295 B CN 101813295B
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- light guide
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- type light
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Abstract
The invention discloses a direct type light guide plate structure of a double-sided liquid crystal display, which comprises a direct type light guide plate, wherein the direct type light guide plate is positioned between two liquid crystal modules and is provided with a first light-emitting surface corresponding to an upper layer liquid crystal module and a second light-emitting surface corresponding to a lower layer liquid crystal module; parallel pipe-shaped mounting holes are uniformly formed in the direct type light guide plate and are parallel with the first light-emitting surface and the second light-emitting surface of the direct type light guide plate; strip light sources are arranged in the pipe-shaped mounting holes; and the inner surfaces, leaning towards the directions of the first light-emitting surface and the second light-emitting surface, of the pipe-shaped mounting holes of the direct type light guide plate are provided with spherical protuberances. By performing a light guidance treatment on the direct type light guide plate and adding the spherical protuberances and light condensing salient point structures, the direct type light guide plate makes most of light rays emitted by the strip light sources be emitted out vertical to the light-emitting surfaces, and improves the transmission efficiency and the service efficiency of the light rays so as to effectively improve the display effect of the double-sided liquid crystal display.
Description
Technical field the present invention relates to a kind of backlight assembly of double side liquid crystal display, relates in particular to a kind of direct type light guide plate structure of double side liquid crystal display.
Background technology is along with the progress of display technology, and display device produces various new-type display device from continuous differentiation of traditional cathode ray tube (CRT).Wherein, Advantages such as that liquid crystal indicator (LCD) possesses is frivolous, power saving, low radiation; Therefore become one of common now display device gradually, can be widely used in communication, information or the consumption electronic products such as mobile computer, digital demonstration, Video Camera, mobile phone.
Liquid crystal indicator mainly is to show with a liquid crystal panel (LCD panel), because liquid crystal panel itself can't be luminous, therefore must supply the light source that brightness is abundant and be evenly distributed, and makes normally show image of liquid crystal panel.This light source is provided by (backlight) backlight assembly.Backlight assembly can be according to the difference of its structure, and is divided into two kinds of side-light type backlight assembly and direct type backlight assemblies.The side-light type backlight assembly only adopts single tubes or the fluorescent tube more than two as light source usually, utilizes LGP design to strengthen the control to light going direction, yet because light going direction control is difficult, so display effect is not good usually.Comparatively speaking, the design of direct type backlight assembly is to place LGP inner fluorescent tube as light source, because of accommodation space becomes big, thus can use the fluorescent tube more than two to increase the intensity of light source, thus display effect improved.
Existing double side liquid crystal display utilizes backlight assembly to illuminate two LCD screens in front and back simultaneously and realizes double-sided display.As shown in Figure 1, the two plane type backlight assembly among the patent of invention ZL03143071.6 " two plane type backlight assembly and liquid crystal indicator " comprises a plurality of light sources 4 and a plurality of light reflection subassembly 01 that is arranged at respectively between said a plurality of light source.Described smooth reflection subassembly is in order to change from the light path of the part light of light source 4 outgoing; Make the light of original loss pass through two the face outgoing of the reflection of light reflection subassembly 01 from direct type light guide plate 1 because of the directive side; Thereby the increase source efficiency improves display effect.But light reflection subassembly 01 be arranged so that the backlight assembly complex structure, increased the production cost and the manufacture difficulty of the direct type light guide plate of double side liquid crystal display, reduced production efficiency, also make the reliability of double side liquid crystal display reduce.
Summary of the invention the purpose of this invention is to provide a kind of simple in structure, and cost of goods manifactured is low, and the light conduction efficiency is high, the direct type light guide plate structure of the double side liquid crystal display that display effect is good.
For realizing above-mentioned purpose; The present invention includes direct type light guide plate; Direct type light guide plate is provided with first exiting surface corresponding with the upper strata liquid crystal module between two liquid crystal module, and with the second corresponding exiting surface of lower floor's liquid crystal module; Evenly be provided with parallel cast mounting hole in the described direct type light guide plate, and the cast mounting hole is parallel to first exiting surface and second exiting surface of direct type light guide plate; Be provided with strip source in the cast mounting hole; The inside surface that the cast mounting hole of direct type light guide plate relies on the direction of first exiting surface and second exiting surface is provided with the sphere projection.
Adopt above structure; The light that emits from strip source reflects after the sphere projection that gets on the cast mounting hole inside surface; Light behind superrefraction changes original direct of travel, at last from first exiting surface and the second exiting surface outgoing of direct type light guide plate.Like this, need not add miscellaneous part, only change the surface configuration on the direct type light guide plate, can realize the raising of light conduction efficiency.
Be respectively equipped with array optically focused salient point on first exiting surface of direct type light guide plate of the present invention and second exiting surface.Adopt this structure; Light is after the process direct type light guide plate; In the time of from first exiting surface and the second exiting surface outgoing; Pass through the reflex of optically focused salient point once more, thus make part originally to the light of side outgoing before just or the dead astern advance, further improved the conduction efficiency of light.
There is not the setting of optically focused salient point near the position at strip source center on first exiting surface of the present invention and second exiting surface; From near strip source center to two a strip source position intermediate, the setting of optically focused salient point is intensive gradually, and near two strip source position intermediate, the setting of optically focused salient point is the most intensive.The setting of optically focused salient point is carried out non-equidistance processing according to the transmission attenuation of light in direct type light guide plate, and far away more from strip source, round dot is close more.Like this, when emergent ray is vertical during with the direct type light guide plate exiting surface, owing to do not have the setting of optically focused salient point perpendicular to the position of strip source, emergent ray does not pass through the optically focused salient point and direct outgoing.When emergent ray and direct type light guide plate exiting surface had certain angle, light changed light path trend and trend perpendicular to exiting surface through the refraction of optically focused salient point or reflection back.Emergent ray is in the middle of two strip sources, and density is big more, so the optically focused salient point of relative set is also many more, thereby effective utilization ratio of the light source that is reaches the highest.
Optically focused salient point of the present invention is protruding spherical.Adopt protruding spherical configuration can change the angle of beam projecting direct type light guide plate to greatest extent, make its towards direct type light guide plate just before or the dead astern outgoing, thereby improve the display effect of display.The end of strip source of the present invention is provided with plug shape head, and this plug shape head matches with the port of cast mounting hole.Adopt this structure, in the time of in strip source is fit into the cast mounting hole, plug dress head has played fixing effect, thereby on the basis of having saved installing space, makes strip source difficult drop-off and invariant position.
The plug shape head inside surface that cooperates with the cast mounting hole on the plug shape head of the present invention is pasted with reflectorized material, adopts this structure can avoid part light to cause damage because shining plug shape head, thereby has improved the utilization ratio of light source.
Strip source of the present invention is a CCFL.The brightness of CCFL is high and use light decay little for a long time, and the life-span is long and energy consumption is low, is suitable as the light source of backlight assembly of liquid crystal display.
Be arranged with at least one transparent fixedly snap ring between cast mounting hole of the present invention and the CCFL.Use transparent fixedly snap ring further CCFL to be fixed in the cast mounting hole, guaranteed the reliability of using.
Strip source of the present invention is a LED optical strip, has utilized the luminous one-way of LED optical strip, has improved the conduction efficiency of light, thereby has improved the brightness of double side liquid crystal display.
The inboard of cast mounting hole of the present invention offers locating groove, and this locating groove matches with the stripe shape circuit board of LED optical strip, and two light-emitting areas of LED optical strip correspond respectively to first exiting surface and second exiting surface of direct type light guide plate.Adopt this fit structure, can guarantee LED optical strip can not change because of vibrations towards and the position, thereby improved the dependability of double side liquid crystal display.
In sum; The present invention compared with prior art; The present invention handles through direct type light guide plate being carried out leaded light, has added sphere projection and optically focused bump structure, makes the light overwhelming majority that strip source sends perpendicular to the exiting surface outgoing; Promote the conduction efficiency and the service efficiency of light, thereby effectively raised the display effect of double side liquid crystal display.
Hereinafter combines accompanying drawing and embodiment that the present invention is done further detailed explanation:
Fig. 1 is the structural representation of direct type light guide plate in the existing patented technology;
Fig. 2 is a partial structurtes synoptic diagram of the present invention;
Fig. 3 is the index path that refraction takes place in the sphere projection light;
Fig. 4 is an one-piece construction synoptic diagram of the present invention;
Fig. 5 is the index path of light in direct type light guide plate;
Fig. 6 is a kind of structural representation of strip source;
Fig. 7 is the structural representation of another kind of strip source;
Fig. 8 is the partial schematic diagram of direct type light guide plate port position.
Embodiment such as Fig. 2, shown in Figure 3; The present invention includes direct type light guide plate 1; Direct type light guide plate 1 is two liquid crystal module 21, between 22, is provided with first exiting surface 11 corresponding with upper strata liquid crystal module 21, and second exiting surface 12 corresponding with lower floor liquid crystal module 22; Evenly be provided with parallel cast mounting hole 3 in the described direct type light guide plate 1, and cast mounting hole 3 is parallel to first exiting surface 11 and second exiting surface 12 of direct type light guide plate 1; Be provided with strip source 4 in the cast mounting hole 3; The inside surface 31 that the cast mounting hole 3 of direct type light guide plate 1 relies on the direction of first exiting surface 11 and second exiting surface 12 is provided with sphere projection 32.
Like Fig. 4, shown in Figure 5, be respectively equipped with optically focused salient point 5 on first exiting surface 11 of direct type light guide plate 1 of the present invention and second exiting surface 12.Described optically focused salient point 5 can be protruding spherical.Not having optically focused salient point 5 near the position at strip source 4 centers on described first exiting surface 11 and second exiting surface 12 is provided with; From near strip source 4 centers to two strip source 4 position intermediate, optically focused salient point 5 is provided with intensive gradually, and near two strip source 4 position intermediate, optically focused salient point 5 is provided with the most intensive.
Like Fig. 5, Fig. 6, shown in Figure 7, the end of strip source 4 of the present invention is provided with plug shape head 41, and this plug shape head 41 matches with the port 33 of cast mounting hole 3, makes strip source 4 be fixed in cast mounting hole 3 inside.The plug shape head inside surface 42 that cooperates with cast mounting hole 3 on the described plug shape head 41 is pasted with reflectorized material.
Like Fig. 5, shown in Figure 6, strip source 4 of the present invention is a CCFL.Be arranged with at least one transparent fixedly snap ring 6 between described cast mounting hole 3 and the CCFL 4.
Like Fig. 7, shown in Figure 8; Strip source 4 of the present invention is a LED optical strip; The inboard of cast mounting hole 3 offers locating groove 34; This locating groove 34 matches with the stripe shape circuit board 42 of LED optical strip 4, and two light-emitting areas of LED optical strip 4 correspond respectively to first exiting surface 11 and second exiting surface 12 of direct type light guide plate 1.
Claims (10)
1. the direct type light guide plate structure of a double side liquid crystal display comprises
Direct type light guide plate, direct type light guide plate are provided with first exiting surface corresponding with the upper strata liquid crystal module between two liquid crystal module, and with the second corresponding exiting surface of lower floor's liquid crystal module;
Evenly be provided with parallel cast mounting hole in the described direct type light guide plate, and the cast mounting hole is parallel to first exiting surface and second exiting surface of direct type light guide plate;
Be provided with strip source in the cast mounting hole;
It is characterized in that: the inside surface that the cast mounting hole of direct type light guide plate relies on the direction of first exiting surface and second exiting surface is provided with the sphere projection.
2. the direct type light guide plate structure of a kind of double side liquid crystal display according to claim 1 is characterized in that: be respectively equipped with the optically focused salient point on first exiting surface of described direct type light guide plate and second exiting surface.
3. the direct type light guide plate structure of a kind of double side liquid crystal display according to claim 2 is characterized in that: do not have the setting of optically focused salient point near the position at strip source center on first exiting surface and second exiting surface; From near strip source center to two a strip source position intermediate, the setting of optically focused salient point is intensive gradually, and near two strip source position intermediate, the setting of optically focused salient point is the most intensive.
4. according to the direct type light guide plate structure of claim 2 or 3 described a kind of double side liquid crystal displays, it is characterized in that: described optically focused salient point is protruding spherical.
5. according to the direct type light guide plate structure of claim 1,2 or 3 described a kind of double side liquid crystal displays, it is characterized in that: the end of strip source is provided with plug shape head, and this plug shape head matches with the port of cast mounting hole.
6. the direct type light guide plate structure of a kind of double side liquid crystal display according to claim 5, it is characterized in that: the plug shape head surface that cooperates with the cast mounting hole on the described plug shape head is pasted with reflectorized material.
7. according to the direct type light guide plate structure of claim 1,2 or 3 described a kind of double side liquid crystal displays, it is characterized in that: described strip source is a CCFL.
8. the direct type light guide plate structure of a kind of double side liquid crystal display according to claim 7 is characterized in that: be arranged with at least one transparent fixedly snap ring between described cast mounting hole and the CCFL.
9. according to the direct type light guide plate structure of claim 1,2 or 3 described a kind of double side liquid crystal displays, it is characterized in that: described strip source is a LED optical strip.
10. the direct type light guide plate structure of a kind of double side liquid crystal display according to claim 9; It is characterized in that: the inboard of cast mounting hole offers locating groove; This locating groove matches with the stripe shape circuit board of LED optical strip, and two light-emitting areas of LED optical strip correspond respectively to first exiting surface and second exiting surface of direct type light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101378917A CN101813295B (en) | 2010-04-01 | 2010-04-01 | Direct type light guide plate structure of double-sided liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101378917A CN101813295B (en) | 2010-04-01 | 2010-04-01 | Direct type light guide plate structure of double-sided liquid crystal display |
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| Publication Number | Publication Date |
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| CN101813295A CN101813295A (en) | 2010-08-25 |
| CN101813295B true CN101813295B (en) | 2012-01-11 |
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| CN2010101378917A Expired - Fee Related CN101813295B (en) | 2010-04-01 | 2010-04-01 | Direct type light guide plate structure of double-sided liquid crystal display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015161532A1 (en) * | 2014-04-25 | 2015-10-29 | 深圳市华星光电技术有限公司 | Curved double-face liquid crystal display |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183810B (en) * | 2011-04-26 | 2013-10-09 | 深圳市华星光电技术有限公司 | Light guide plate and backlight module thereof |
| CN105487274B (en) * | 2016-01-18 | 2019-03-01 | 深圳市华星光电技术有限公司 | Display with double faces frame and display with double faces |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003287748A (en) * | 2002-01-22 | 2003-10-10 | Sharp Corp | Liquid crystal display device |
| CN1510487A (en) * | 2002-12-20 | 2004-07-07 | 西铁城电子股份有限公司 | Light conducting board and supporter for it |
| CN2722289Y (en) * | 2004-03-18 | 2005-08-31 | 力捷电脑股份有限公司 | Back light mould set |
| CN1955806A (en) * | 2005-10-28 | 2007-05-02 | 鸿富锦精密工业（深圳）有限公司 | Backlight module set and its light guide plate |
| CN201654391U (en) * | 2010-04-01 | 2010-11-24 | 福建捷联电子有限公司 | Double-side liquid crystal display with straight downward light guide plate |
-
2010
- 2010-04-01 CN CN2010101378917A patent/CN101813295B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003287748A (en) * | 2002-01-22 | 2003-10-10 | Sharp Corp | Liquid crystal display device |
| CN1510487A (en) * | 2002-12-20 | 2004-07-07 | 西铁城电子股份有限公司 | Light conducting board and supporter for it |
| CN2722289Y (en) * | 2004-03-18 | 2005-08-31 | 力捷电脑股份有限公司 | Back light mould set |
| CN1955806A (en) * | 2005-10-28 | 2007-05-02 | 鸿富锦精密工业（深圳）有限公司 | Backlight module set and its light guide plate |
| CN201654391U (en) * | 2010-04-01 | 2010-11-24 | 福建捷联电子有限公司 | Double-side liquid crystal display with straight downward light guide plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015161532A1 (en) * | 2014-04-25 | 2015-10-29 | 深圳市华星光电技术有限公司 | Curved double-face liquid crystal display |
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| CN101813295A (en) | 2010-08-25 |
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Granted publication date: 20120111 Termination date: 20140401 |