CN2588408Y - Double-side lighting back light source - Google Patents
Double-side lighting back light source Download PDFInfo
- Publication number
- CN2588408Y CN2588408Y CN 02289928 CN02289928U CN2588408Y CN 2588408 Y CN2588408 Y CN 2588408Y CN 02289928 CN02289928 CN 02289928 CN 02289928 U CN02289928 U CN 02289928U CN 2588408 Y CN2588408 Y CN 2588408Y
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- China
- Prior art keywords
- guide plate
- light guide
- light source
- light
- double
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- Expired - Lifetime
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Abstract
The utility model relates to a double-side lighting back light source, which is composed of a light guide board, a light source and a diffusion film, wherein, the diffusion film and a light adding film are arranged on the outer surface of the light guide board which is a single light guide plate; the upper and the lower surfaces of the light guide plate are regularly provided with patterns formed by concave and convexity; the light source is arranged at the side face of the light guide plate. When the light source shoots from the side of the light guide plate, strong light rays emit from the upper and the lower surfaces of the light guide plate after reflected and refracted by the concave and the convexity on the upper and the lower surfaces; simultaneously, the utility model provides a background light source for two liquid crystal LCD display screens to cause the thickness dimension of a display to achieve minimum and provide wide space for the structure and the appearance design of the display. The diffusion film and the light adding film of different light transmittance can be selected according to brightness requirements. The lighting brightness of a main display screen and an auxiliary display screen can be selected within 1: 1 to 5: 1, and the decrease rate of raw materials and energy sources can reach 50 percents. The utility model can also be used for monochromatic light, polychromatic light even seven-color light fields.
Description
Technical field
The utility model relates to a kind of backlight, is specifically related to a kind of two-sided backlight that all can uniformly light-emitting, and it can be simultaneously provides ambient light illumination for two liquid crystal LCD display or other display.
Background technology
Existing backlight can only provide ambient light illumination for a slice liquid crystal LCD display.To must install two backlights forming by by two light guide plate for two LCD in front and back are that double screen provides ambient light illumination.Because the develop rapidly of display technique, double screen technique have obtained using widely,, press for all that power consumption is little, volume is little, simple in structure and luminous uniform double-side backlight such as the mobile phone X multimedia audio receiver of mobile communication and toy etc.
The utility model content
The technical problems to be solved in the utility model is, a kind of energy-efficient double-side backlight of saving material simultaneously is provided, and the two sides bias light intensity of this double-side backlight can be regulated as required.
The utility model provides following technical scheme, a kind of double-side backlight, form by light guide plate, light source and diffusion barrier, diffusion barrier is arranged on the outside surface of light guide plate, this light guide plate is single light guide plate, in the upper and lower surface of light guide plate, rule is provided with by depression or the decorative pattern that convexes to form, and light source is arranged on the direction perpendicular to the light guide plate plane.
Described by the decorative pattern that caves in or convex to form, the point-like that forms in the time of can be by hot pressing, laser engraving, mechanical engraving or injection mo(u)lding or the depression of other shape or projection is regularly arranged by size forms, and be array-like, apart from the near depression of light source or projection is more little or spacing is big more, apart from light source depression far away or projection is big more or spacing is more little.
Described light source can be the LED luminophor.
Described light source can be a cold cathode fluorescent tube luminophor.
On the diffusion barrier of described light guide plate outside surface bright enhancement film can be set.
Described bright enhancement film can be one deck.
Described bright enhancement film can be two-layer.
Described light source can be arranged on a side of light guide plate, two sides or three sides.
Described light source can be arranged on a side angle of light guide plate, two side angles or three side angles.
The areal extent of described backlight can be from several square centimeters to several thousand square centimeters of zero points, and the gauge scope is from 0.4mm to 30mm.
Because the utility model has used single light guide plate, the upper and lower surface of light guide plate all has depression or projection, when light source when the side of light guide plate is injected, depression and protruding reflection and refraction by upper and lower surface, make on the light guide plate, lower surface all has very strong light to appear, thereby realization lighting at two sides, thereby can provide background light source for two liquid crystal LCD display simultaneously, can utilize a light source to produce the effect of two backlights, can make the gauge of ultrathin double screen liquid crystal LCD display reach minimum, be the structural design of double screen liquid crystal LCD display, appearance design provides more wide space.Owing to the diffusion barrier and the bright enhancement film that are provided with on its light guide plate, can select the material of different transmittances according to the brightness needs, the luminosity of main display and secondary display screen was selected between 1: 1 to 5: 1.The minimizing starting material that can be at double and the consumption of the energy, its slip can reach 50% at most, compact conformation, and can realize wide brightness range, can also be used in monochromatic light, polychromatic light even seven-colour-light field.
Description of drawings
Fig. 1 is an embodiment of the present utility model, and its light source is the LED display lamp.
Fig. 2 is another embodiment of the present utility model, and its light source is a cold cathode fluorescent tube luminophor.
Fig. 3 is a user mode synoptic diagram of the present utility model.
Fig. 3 a is a front view; Fig. 3 b is a right view; Fig. 3 c be among Fig. 3 a A-A to cut-open view;
Fig. 3 d is a rear view; Fig. 3 e is a upward view.
Fig. 4 is another user mode synoptic diagram of the present utility model.
Fig. 4 a is a front view; Fig. 4 b be among Fig. 4 a B-B to cut-open view; Fig. 4 c is a rear view;
Fig. 4 d is a vertical view.
Fig. 5 is principle of luminosity figure of the present utility model.
Embodiment
A kind of double-side backlight, form by light guide plate, light source and diffusion barrier, diffusion barrier is arranged on the outside surface of light guide plate, this light guide plate is single light guide plate, upper and lower surface in light guide plate, rule is provided with by depression or the decorative pattern that convexes to form, and light source is arranged on the direction perpendicular to the light guide plate plane.
By the decorative pattern that caves in or convex to form, the point-like that forms in the time of can be by hot pressing, laser engraving, mechanical engraving or injection mo(u)lding or the depression of other shape or projection is regularly arranged by size forms, and be array-like, apart from the near depression of light source or projection is more little or spacing is big more, apart from light source depression far away or projection is big more or spacing is more little.
Light source can be the LED luminophor, also can be cold cathode fluorescent tube luminophor.
One deck or two-layer bright enhancement film can be set on the diffusion barrier of light guide plate outside surface.
Light source can be arranged on a side of light guide plate, two sides or three sides, or is arranged on a side angle of light guide plate, two side angles or three side angles.
The areal extent of backlight is from several square centimeters to several thousand square centimeters of zero points, and the gauge scope is from 0.4mm to 30mm.
Referring to Fig. 1, shown in Figure 5, this double-side backlight is made up of light guide plate 1, led light source 2 and diffusion barrier, diffusion barrier is arranged on the outside surface of light guide plate, this light guide plate is single light guide plate, upper and lower surface in light guide plate, rule is provided with by depression or the decorative pattern 6 that convexes to form, and light source is arranged on the direction perpendicular to the light guide plate plane.The light-conductive rate of its light guide plate＞80%, and can be embedded in the high reflectance white frame.
By the decorative pattern 6 that caves in or convex to form, the point-like that forms in the time of can be by hot pressing, laser engraving, mechanical engraving or injection mo(u)lding or the depression of other shape or projection is regularly arranged by size forms, and be array-like, apart from the near depression of light source or projection is more little or spacing is big more, apart from light source depression far away or projection is big more or spacing is more little.
As shown in Figure 2, luminophor can be the cold cathode fluorescent tube.
One deck or two-layer bright enhancement film can be set on the diffusion barrier of light guide plate outside surface.
Light source can be arranged on a side of light guide plate, two sides or three sides, or is arranged on by up and down a side angle, two side angles or three side angles of light guide plate, and LED quantity can be that simple grain also can be many.
The areal extent of backlight is from several square centimeters to several thousand square centimeters of zero points, and the gauge scope is from 0.4mm to 30mm.
Principle of luminosity is seen accompanying drawing 5.
When light source 2 when the side of light guide plate is injected, the reflection and the refraction of depression and projection by inside surface make the upper and lower surface of light guide plate all have very strong light to appear, thereby realize lighting at two sides,
The diffusion barrier of the upper surface of light guide plate, diffusion barrier 3 on the abbreviation, are the main screens of double-screen LCD because of what be provided with on it, because main screen needs brightness higher, can adopt light transmission diffusion barrier preferably, and also can increase by one to two layer of bright enhancement film with spotlight effect increases brightness in addition.
The diffusion barrier at light guide plate lower surface place, be called for short diffusion barrier 4 down, because of what be provided with on it is the pair screen of double-screen LCD, can shield the required background luminance requirement of LCD according to pair, adopt the diffusion barrier of different transmittances, when LCD requires background luminance low, can adopt the low diffusion barrier of transmittance, can adopt the high diffusion barrier of transmittance on the contrary, also can increase one or more layers bright enhancement film with spotlight effect or light enhancing effect on this diffusion barrier improves brightness in addition.
Light intensity can ratio on demand be adjusted, and the design people is that the luminosity that positive and negative liquid crystal LCD shows distributes from I: 1 to 5: 1 ratio is done to select arbitrarily, thereby has widened its usable range greatly.
Claims (10)
1. double-side backlight, form by light guide plate, light source and diffusion barrier, diffusion barrier is arranged on the outside surface of light guide plate, it is characterized in that: this light guide plate is single light guide plate, upper and lower surface in light guide plate, rule is provided with by depression or the decorative pattern that convexes to form, and light source is arranged on the direction perpendicular to the light guide plate plane.
2. double-side backlight according to claim 1, it is characterized in that: described by the decorative pattern that caves in or convex to form, the point-like that forms during by hot pressing, laser engraving, mechanical engraving or injection mo(u)lding or the depression of other shape or projection is regularly arranged by size forms, and be array-like, apart from the near depression of light source or projection is more little or spacing is big more, apart from light source depression far away or projection is big more or spacing is more little.
3. double-side backlight according to claim 1 is characterized in that: described light source is the LED luminophor.
4. double-side backlight according to claim 1 is characterized in that: described light source is a cold cathode fluorescent tube luminophor.
5. double-side backlight according to claim 1 is characterized in that: the diffusion barrier of described light guide plate outside surface is provided with bright enhancement film.
6. double-side backlight according to claim 5 is characterized in that: described bright enhancement film is one deck.
7. double-side backlight according to claim 5 is characterized in that: described bright enhancement film is two-layer.
8. according to claim 1,2,3,4,5,6 or 7 described double-side backlights, it is characterized in that: described light source is arranged on a side of light guide plate, two sides or three sides.
9. according to claim 1,2,3,4,5,6 or 7 described double-side backlights, it is characterized in that: described light source is arranged on a side angle of light guide plate, two side angles or three side angles.
10. double-side backlight according to claim 1 is characterized in that: the areal extent of described backlight is from several square centimeters to several thousand square centimeters of zero points, and the gauge scope is from 0.4mm to 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289928 CN2588408Y (en) | 2002-12-04 | 2002-12-04 | Double-side lighting back light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02289928 CN2588408Y (en) | 2002-12-04 | 2002-12-04 | Double-side lighting back light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588408Y true CN2588408Y (en) | 2003-11-26 |
Family
ID=33749343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02289928 Expired - Lifetime CN2588408Y (en) | 2002-12-04 | 2002-12-04 | Double-side lighting back light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588408Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394227C (en) * | 2003-12-15 | 2008-06-11 | 统宝香港控股有限公司 | Backlight device |
| CN100395620C (en) * | 2004-12-30 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Plate for guiding light, and backlight module of using the plate |
| CN101725915B (en) * | 2008-10-21 | 2012-03-28 | 鸿富锦精密工业（深圳）有限公司 | Back light module |
| CN102523646A (en) * | 2007-07-17 | 2012-06-27 | 上海科锐光电发展有限公司 | Method and LED (Light Emitting Diode) area light source for illuminating for enabling both sides of building decoration materials to glare |
| CN101167119B (en) * | 2005-04-30 | 2012-11-14 | 奥斯兰姆奥普托半导体有限责任公司 | Light source arrangement for backlighting display apparatuses and display apparatus |
| CN103197370A (en) * | 2013-04-07 | 2013-07-10 | 京东方科技集团股份有限公司 | Light guide plate manufacturing method |
| CN107527566A (en) * | 2016-07-26 | 2017-12-29 | 安科瑞电气股份有限公司 | A kind of fire-fighting evacuation indicating lamp |
-
2002
- 2002-12-04 CN CN 02289928 patent/CN2588408Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394227C (en) * | 2003-12-15 | 2008-06-11 | 统宝香港控股有限公司 | Backlight device |
| CN100395620C (en) * | 2004-12-30 | 2008-06-18 | 鸿富锦精密工业（深圳）有限公司 | Plate for guiding light, and backlight module of using the plate |
| CN101167119B (en) * | 2005-04-30 | 2012-11-14 | 奥斯兰姆奥普托半导体有限责任公司 | Light source arrangement for backlighting display apparatuses and display apparatus |
| CN102523646A (en) * | 2007-07-17 | 2012-06-27 | 上海科锐光电发展有限公司 | Method and LED (Light Emitting Diode) area light source for illuminating for enabling both sides of building decoration materials to glare |
| CN101725915B (en) * | 2008-10-21 | 2012-03-28 | 鸿富锦精密工业（深圳）有限公司 | Back light module |
| CN103197370A (en) * | 2013-04-07 | 2013-07-10 | 京东方科技集团股份有限公司 | Light guide plate manufacturing method |
| CN103197370B (en) * | 2013-04-07 | 2015-05-13 | 京东方科技集团股份有限公司 | Light guide plate manufacturing method |
| CN107527566A (en) * | 2016-07-26 | 2017-12-29 | 安科瑞电气股份有限公司 | A kind of fire-fighting evacuation indicating lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WEIZHI INTELLIGENT LTD. Free format text: FORMER OWNER: YAO ZHITU Effective date: 20070615 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070615 Address after: The British Virgin Islands of Tortola Luther Wenham town 1 De Castro Road No. 24 building Accra Island Patentee after: Wezhi Intelligent Ltd Address before: 518000 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee before: Yao Zhitu |
|
| ASS | Succession or assignment of patent right |
Owner name: WAI CHI OPTOELECTRONIC (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: WAI CHI INTELLIGENT CO., LTD. Effective date: 20120214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: 518126 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120214 Address after: 518126 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee after: Waichi Opto Technology (Shenzhen) Ltd. Address before: The British Virgin Islands, Tortola, Luther Wenham Town, 1 islands, 24 De Castro Road, building Accra Patentee before: Wezhi Intelligent Ltd |
|
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN WAI CHI OPTO TECHNOLOGY LTD. Free format text: FORMER NAME: WAI CHI OPTO TECHNOLOGY (SHENZHEN) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518126 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee after: Shenzhen Waichi Photoelectric Co., Ltd. Address before: 518126 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee before: Waichi Opto Technology (Shenzhen) Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121204 Granted publication date: 20031126 |