CN100458528C - Back light module group - Google Patents
Back light module group Download PDFInfo
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- CN100458528C CN100458528C CNB200710140325XA CN200710140325A CN100458528C CN 100458528 C CN100458528 C CN 100458528C CN B200710140325X A CNB200710140325X A CN B200710140325XA CN 200710140325 A CN200710140325 A CN 200710140325A CN 100458528 C CN100458528 C CN 100458528C
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Abstract
The invention relates to a backlight module group which comprises a light guide plate, at least one first light emitting element and at least one second light emitting element; wherein the light guide plate has a first side and a second side opposite to the first side; the first light emitting element is equipped on the first side; furthermore, the first light emitting element has at least three light emitting diodes in different colors; the second light emitting element is equipped on the second side; furthermore, the second light emitting element has at least three light emitting diodes in different colors; wherein the light emitting diodes of the second light emitting element and the first light emitting element have different arrangements.
Description
Technical field
The invention relates to a kind of display device, and particularly relevant for a kind of module backlight that is applied in the display device.
Background technology
With respect to traditionally as cold-cathode tube (the Cold Cathode Fluorescent Lamp of backlight; CCFL), light emitting diode (Light-Emitting Diode; LED) have the higher and not mercurous advantage of low power consumption, color rendering, make LED replace the Backlight For Liquid Crystal Display Panels that CCFL becomes a new generation gradually.
The LED white light backlight that is applied to LCD is to be to utilize multiple coloured light colour mixture to form mostly.More particularly, general common LED white light backlight is that many LED laying arrangements of sending different colours are formed; Yet because the light shape of different colours distributes and be asymmetric, thereby often makes the colour mixture uniformity coefficient not good, and then the white light that causes being sent has the problem of colour cast.
Summary of the invention
The invention provides a kind of module backlight, it is by the arrangement mode of adjusting light emitting diode, reaches the colour mixture effect of uniform.
The object of the present invention is achieved like this, and a kind of module backlight comprises light guide plate, at least one first light-emitting component and at least one second light-emitting component.Light guide plate has first side, and with the first side second side surface opposite.First light-emitting component is arranged at first side, and this first light-emitting component has the light emitting diode of at least three different colours.Second light-emitting component is arranged at second side, and this second light-emitting component has the light emitting diode of at least three different colours.Wherein, the light emitting diode of the second above-mentioned light-emitting component has different arrangement modes with the light emitting diode of first light-emitting component.
In sum, the present invention is exactly a light emitting diode of arranging the light guide plate both sides in a different manner.So, even if the light shape of indivedual light emitting diodes and asymmetric but because the arrangement difference of the light emitting diode of light guide plate both sides, so can compensate the more weak side of energy each other after the colour mixture, and then the white light of avoiding being sent has the problem of colour cast.
Description of drawings
Fig. 1: illustrate a kind of schematic perspective view according to the module backlight of one embodiment of the invention.
Fig. 2: be by first light-emitting component that direction of arrow A, A ' looked of Fig. 1 and the synoptic diagram arranged side by side of second light-emitting component.
Fig. 3: illustrate according to another embodiment of the present invention by first light-emitting component that direction of arrow A, A ' looked of Fig. 1 and the synoptic diagram arranged side by side of second light-emitting component.
Fig. 4: illustrate according to yet another embodiment of the invention by first light-emitting component that direction of arrow A, A ' looked of Fig. 1 and the synoptic diagram arranged side by side of second light-emitting component.
Fig. 5: illustrate according to other embodiment of the present invention by first light-emitting component that direction of arrow A, A ' looked of Fig. 1 and the synoptic diagram arranged side by side of second light-emitting component.
Drawing reference numeral:
110: 112: the first sides of light guide plate
120: the first light-emitting components in 114: the second sides
122a: light emitting diode 122b: light emitting diode
122c: 130: the second light-emitting components of light emitting diode
132a: light emitting diode 132b: light emitting diode
132c: light emitting diode A: direction
A ': direction
Embodiment
With reference to Fig. 1, it illustrates a kind of schematic perspective view according to the module backlight of one embodiment of the invention.As shown in the figure, a kind of module backlight comprises light guide plate 110, at least one first light-emitting component 120 and at least one second light-emitting component 130.Light guide plate 110 has first side 112, and with first side, 112 second side surface opposite 114.First light-emitting component 120 is arranged at first side, 112, the second light-emitting components 130 and then is arranged at second side 114.More particularly, the first above-mentioned light-emitting component 120 and second light-emitting component 130 can be to form lamp bar (Lighting Bar) by plural first light-emitting component 120 respectively with plural second light-emitting component 130 earlier, the lamp bar are placed the two sides of light guide plate 110 again.Should be appreciated that the solid line of Fig. 1 is the direct appreciable line segment of expression, dotted line then represents to be hidden in the invisible line segment in entity back.
Fig. 2 is by first light-emitting component 120 that direction of arrow A, A ' looked of Fig. 1 and the synoptic diagram arranged side by side of second light-emitting component 130.As shown in the figure, the first above-mentioned light-emitting component 120 has light emitting diode 122a, 122b, the 122c of at least three different colours, do not limit the color of light emitting diode in the present invention, light emitting diode in the present embodiment for example is the light emitting diode that comprises three different colours of redness, green, blueness. Light emitting diode 132a, 132b, 132c that second light-emitting component 130 has at least three different colours do not limit the color of light emitting diode at this yet, and light emitting diode in the present embodiment for example is the light emitting diode that comprises three different colours of redness, green, blueness.Wherein, light emitting diode 122a, the 122b of the first above-mentioned light-emitting component 120,122c have different arrangement modes with light emitting diode 132a, 132b, the 132c of second light-emitting component 130.
More particularly, light emitting diode 132a, the 132b of the second above-mentioned light-emitting component 130, the color arrangement mode of 132c are the flip horizontal setting of color arrangement mode of light emitting diode 122a, 122b, the 122c of first light-emitting component 120, hereat the color of light emitting diode 122a, the 122b of light emitting diode 132a, the 132b of second light-emitting component 130,132c and first light-emitting component 120,122c arrange be with about corresponding setting.Thus, even if the light shape of indivedual light emitting diodes is asymmetric, but since the color arrangement of light emitting diode 132a, the 132b of light emitting diode 122a, the 122b of first light-emitting component 120,122c and second light-emitting component 130,132c be with about corresponding setting, therefore after colour mixture, can compensate the more weak side of energy each other, and then reduce the value of chromatism of the white light that is sent.
With reference to Fig. 3, it illustrates according to another embodiment of the present invention by as first light-emitting component 120 that direction of arrow A, A ' looked of Fig. 1 and the synoptic diagram arranged side by side of second light-emitting component 130.In the present embodiment, light emitting diode 132a, the 132b of second light-emitting component 130, the color arrangement mode of 132c are the flip vertical setting of color arrangement mode of light emitting diode 122a, 122b, the 122c of first light-emitting component 120, and hereat to arrange be with corresponding setting up and down to the color of light emitting diode 122a, the 122b of light emitting diode 132a, the 132b of second light-emitting component 130,132c and first light-emitting component 120,122c.
With reference to Fig. 4, it illustrates according to yet another embodiment of the invention by as first light-emitting component 120 that direction of arrow A, A ' looked of Fig. 1 and the synoptic diagram arranged side by side of second light-emitting component 130.In the present embodiment, level and flip vertical setting when light emitting diode 132a, the 132b of second light-emitting component 130, the color arrangement mode of 132c are the color arrangement mode of light emitting diode 122a, 122b, 122c of first light-emitting component 120, hereat the color of light emitting diode 122a, the 122b of light emitting diode 132a, the 132b of second light-emitting component 130,132c and first light-emitting component 120,122c arrange be with about, about corresponding setting.
Though in more preceding embodiment, light emitting diode 132a, 132b, the 132c of light emitting diode 122a, the 122b of first light-emitting component 120,122c and second light-emitting component 130 all are triangularly arranged, right this does not limit the present invention, and light emitting diode 132a, the 132b of light emitting diode 122a, the 122b of first light-emitting component 120,122c and second light-emitting component 130,132c also can be other shape and arrange.For instance, light emitting diode 132a, 132b, the 132c of light emitting diode 122a, the 122b of first light-emitting component 120 of Fig. 5,122c and second light-emitting component 130 promptly are the oblique angle linear array.
Following table 1 is listed the value of chromatism of several laboratory samples, with the generation of explanation color offset phenomenon and the relation between the light emitting diode arrangement.Wherein, the light emitting diode of the light-emitting component of the light guide plate both sides of laboratory sample one all is triangularly arranged, and the light-emitting component of both sides is arranged identical; The light emitting diode of the light-emitting component of the light guide plate both sides of laboratory sample two all is linear array, and the light-emitting component of both sides is arranged identical; Laboratory sample three is the module backlight that Fig. 2 illustrates; The laboratory sample four fundamental rules are the module backlight that Fig. 5 illustrated.
Table 1
| Laboratory sample | One | Two | Three | Four |
| The light emitting diode spread geometry | Rounded projections arranged | Linear array | Rounded projections arranged | Linear array |
| Light-emitting component is arranged | Identical | Identical | Different | Different |
| Value of chromatism | ～0.010 | ～0.017 | ～0.006 | ～0.008 |
As shown in Table 1, compare with laboratory sample two with laboratory sample one, the laboratory sample three and the laboratory sample four of the above embodiment of the present invention according to the arrangement difference of its light emitting diode, can reduce value of chromatism respectively about 0.004 and 0.009.
Though the present invention discloses with specific embodiment; but it is not in order to limit the present invention; any those skilled in the art; the displacement of the equivalent assemblies of under the prerequisite that does not break away from design of the present invention and scope, having done; or, all should still belong to the category that this patent is contained according to equivalent variations and modification that scope of patent protection of the present invention is done.
Claims (3)
1. module backlight is characterized in that this module backlight comprises at least:
One light guide plate has one first side and one second side, and wherein this first side is relative with this second side;
At least one first light-emitting component is arranged at this first side, and this first light-emitting component has the light emitting diode of at least three different colours;
At least one second light-emitting component, be arranged at this second side, and this second light-emitting component has the light emitting diode of at least three different colours, and wherein those light emitting diodes of this second light-emitting component have different arrangement modes with those light emitting diodes of this first light-emitting component;
The color arrangement mode of those light emitting diodes of this second light-emitting component is flip horizontal, flip vertical or the level and the flip vertical setting simultaneously of color arrangement mode of those light emitting diodes of this first light-emitting component.
2. module backlight as claimed in claim 1 is characterized in that: those light emitting diodes of this first light-emitting component and those light emitting diodes of this second light-emitting component are to be oblique angle linear array or rounded projections arranged.
3. module backlight as claimed in claim 1 is characterized in that: the color of those light emitting diodes of this first light-emitting component and those light emitting diodes of this second light-emitting component comprises redness, green and blue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710140325XA CN100458528C (en) | 2007-08-09 | 2007-08-09 | Back light module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710140325XA CN100458528C (en) | 2007-08-09 | 2007-08-09 | Back light module group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101105606A CN101105606A (en) | 2008-01-16 |
| CN100458528C true CN100458528C (en) | 2009-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710140325XA Active CN100458528C (en) | 2007-08-09 | 2007-08-09 | Back light module group |
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| Country | Link |
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| CN (1) | CN100458528C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI408460B (en) * | 2010-02-24 | 2013-09-11 | Au Optronics Corp | Optoelectronic device, display and back light module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110140009B (en) * | 2016-12-29 | 2022-02-25 | 康宁股份有限公司 | Microstructured and patterned light guide plates and devices incorporating same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002157909A (en) * | 2000-11-17 | 2002-05-31 | Stanley Electric Co Ltd | Led surface light source device |
| CN1558284A (en) * | 2004-02-02 | 2004-12-29 | 友达光电股份有限公司 | Backlight assembly |
| CN1301433C (en) * | 2004-04-07 | 2007-02-21 | 友达光电股份有限公司 | Backlight modular |
| WO2007032116A1 (en) * | 2005-09-14 | 2007-03-22 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN101000125A (en) * | 2006-01-10 | 2007-07-18 | 三星电机株式会社 | Surface light source using light emitting diode and liquid crystal display backlight unit employing the same |
-
2007
- 2007-08-09 CN CNB200710140325XA patent/CN100458528C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002157909A (en) * | 2000-11-17 | 2002-05-31 | Stanley Electric Co Ltd | Led surface light source device |
| CN1558284A (en) * | 2004-02-02 | 2004-12-29 | 友达光电股份有限公司 | Backlight assembly |
| CN1301433C (en) * | 2004-04-07 | 2007-02-21 | 友达光电股份有限公司 | Backlight modular |
| WO2007032116A1 (en) * | 2005-09-14 | 2007-03-22 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN101000125A (en) * | 2006-01-10 | 2007-07-18 | 三星电机株式会社 | Surface light source using light emitting diode and liquid crystal display backlight unit employing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI408460B (en) * | 2010-02-24 | 2013-09-11 | Au Optronics Corp | Optoelectronic device, display and back light module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101105606A (en) | 2008-01-16 |
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