CN201439906U - Edge-lighting backlight module and liquid crystal display (LCD) - Google Patents
Edge-lighting backlight module and liquid crystal display (LCD) Download PDFInfo
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- CN201439906U CN201439906U CN2009201328997U CN200920132899U CN201439906U CN 201439906 U CN201439906 U CN 201439906U CN 2009201328997 U CN2009201328997 U CN 2009201328997U CN 200920132899 U CN200920132899 U CN 200920132899U CN 201439906 U CN201439906 U CN 201439906U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 15
- 239000003086 colorant Substances 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001795 light effect Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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Abstract
The embodiment of the utility model provides an edge-lighting backlight module, which comprises a light guide plate and LED light bars, wherein the end parts at the two sides of the light guide plate are provided with incidence end surfaces; and the LED light bars are arranged at the two sides of the light guide plate and face to the incidence end surfaces. The edge-lighting backlight module is characterized in that the LED light bar is provided with at least two rows of LEDs, wherein each row of LEDs includes a plurality of groups of LEDs; each group of LEDs is provided with a red LED, a green LED and a blue LED that are arranged in the same order; and the LEDs in at least two colors and the LEDs with the same color in the corresponding group in the adjacent row are arranged on the used line position. The utility model also proposes a liquid crystal display (LCD) correspondingly. For the embodiment of the utility model, when the LEDS in the three primary colors are adopted as the light source, the edge-lighting backlight module can lead light mixing to be more uniform, and the white light after the light mixing can have wider color gamut than a white-light LED.
Description
Technical Field
The utility model belongs to the electron field especially relates to a side light type backlight unit and LCD.
Background
A backlight Module (Back Light Module) is a key component of a liquid crystal display panel, and since liquid crystal itself does not have a Light emitting characteristic, the backlight Module must be installed on the Back of the liquid crystal display panel to illuminate the liquid crystal display panel to display an image. Currently, the types of backlight sources commonly used in liquid crystal displays mainly include three primary color Light Emitting Diodes (LEDs) and Cold Cathode Fluorescent Lamps (CCFLs), where the three primary color LEDs include red LEDs, green LEDs and blue LEDs, and compared with CCFLs, LEDs have advantages of higher color saturation, no mercury, longer lifetime, capability of being driven at lower voltage by a simpler control circuit, nanosecond switching time, good mechanical stability, and the like.
The LED backlight module can be divided into an edge light type and a direct type according to different light source distribution positions, a light guide plate is required to convert a linear light source on the side edge into a surface light source emitting from the front side in the edge light type backlight module, when the tricolor LEDs are adopted as the light source in the edge light type backlight module, the arrangement method of the tricolor LEDs can adopt a single-row tricolor LED periodic interval arrangement method facing a light inlet surface of the light guide plate and a tricolor LED periodic interval arrangement method facing a steering reflective cup additionally arranged on the light inlet surface of the light guide plate, but the light mixing of the light rays emitted by the tricolor LEDs is not uniform in the two methods.
SUMMERY OF THE UTILITY MODEL
The utility model provides a side light type backlight unit and LCD when adopting three primary colors LED as the light source, can make it realize more even mixed light to white light after the mixture has than the wider colour gamut of white light LED.
In view of the above technical problem, the utility model provides a side light type backlight module, include
The light guide plate, the both sides end of the said light guide plate has incident end faces;
the light emitting diode light bars are arranged on two sides of the light guide plate and are opposite to the incident end face; wherein,
the LED light bar is provided with at least two rows of LEDs, each row of LEDs comprises a plurality of groups of LEDs, each group of LEDs is provided with red LEDs, green LEDs and blue LEDs which are arranged in the same order, and at least two colors of LEDs and the LEDs with the same color in the corresponding group of the adjacent row are positioned on different column positions.
The utility model discloses still corresponding proposition a liquid crystal display, including liquid crystal display panel and sidelight type backlight unit, sidelight type backlight unit includes
The light guide plate, the both sides end of the said light guide plate has incident end faces;
the light emitting diode light bars are arranged on two sides of the light guide plate and are opposite to the incident end face; wherein,
the LED light bar is provided with at least two rows of LEDs, each row of LEDs comprises a plurality of groups of LEDs, each group of LEDs is provided with red LEDs, green LEDs and blue LEDs which are arranged in the same order, and at least two colors of LEDs and the LEDs with the same color in the corresponding group of the adjacent row are positioned on different column positions.
Implement the embodiment of the utility model provides a, through having the emitting diode of two kinds of colours among every group emitting diode at least and correspond the emitting diode that the colour is the same in the group with adjacent row on being located the row position that does not, can make the tricolor LED of different colours mix the light in adjacent two are nearby, mix the light effect more even to white light after mixing has than the wider colour gamut of white light LED.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of a backlight module according to an embodiment of the present invention;
FIG. 2 is a schematic view of the LED light bar of FIG. 1;
fig. 3 is a schematic diagram of an embodiment of the present invention.
Detailed Description
The utility model provides a side light type backlight unit and LCD when adopting three primary colors LED as the light source, can make it realize more even mixed light to white light after the mixture has than the wider colour gamut of white light LED.
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention, which includes a light guide plate 11, a reflective paper 12 and an led light bar 13, wherein,
the end parts of both sides of the light guide plate 11 are provided with incident end surfaces 111;
here, when the implementation is specific, the light guide plate 11 is a monolithic organic glass, and the structure thereof is a cuboid, and white patterns or injection molding micro-structure patterns which are regularly distributed can be printed on the bottom surface of the light guide plate 11 for scattering light rays entering the light guide plate.
The light emitting diode light bars 13 are arranged on two sides of the light guide plate 11 and are opposite to the incident end surface 111;
the led light bar 13 is provided with a circuit board 131 and leds 132 mounted on the circuit board 131, at least two rows of leds are disposed on the circuit board 131, each row of leds includes multiple sets of leds, each set of leds is provided with Red leds (Red, R), Green leds (Green, G) and Blue leds (Blue, B) in the same arrangement order, and at least two colors of leds and leds in the same color in the corresponding sets of adjacent rows are located in different column positions, which can be referred to in the example of fig. 2 in specific implementation.
The reflective paper 12 is disposed between the led light bar 13 and the light guide plate 11, the reflective paper 12 surrounds the incident end surface 111 of the light guide plate 11, a plurality of small holes 122 having the same size as the leds 132 on the led light bar 13 are formed on the surface of the reflective paper 12, and the light-emitting surface of the leds 132 in the led light bar 13 passes through the small holes 122. The reflective paper 12 and the light guide plate 11 form a closed air reflection area to reduce the light overflow of the light emitting diode light bar 13;
here, in specific implementation, the reflective paper 12 may be configured as a hollow rectangular body, the length and height of the rectangular body are slightly greater than the length and height of the incident end surface 111, wherein one side surface of the rectangular body facing the incident end surface 111 is opened, one side surface of the rectangular body facing away from the incident end surface 111 is provided with a plurality of small holes 122 having the same size as the light emitting diodes 132 on the light emitting diode light bar 13, the light emitting surface of the light emitting diodes 132 in the light emitting diode light bar 13 passes through the small holes 122, the rectangular body may be sleeved into the incident end surface 111 and surround the incident end surface 111, and forms a closed air reflective area with the incident end surface 111 of the light guide plate 11, so as to reduce light overflow of the light.
Fig. 2 is a schematic structural diagram of the light emitting diode light bar 13 in fig. 1, the light emitting diode light bar 13 is provided with a circuit board 131 and light emitting diodes 132 mounted on the circuit board 131, at least two rows of light emitting diodes are disposed on the circuit board 131, each row of light emitting diodes includes a plurality of sets of light emitting diodes, each set of light emitting diodes is provided with Red light emitting diodes (Red, R), Green light emitting diodes (Green, G) and Blue light emitting diodes (Blue, B) which are arranged in the same order, and the light emitting diodes with at least two colors and the light emitting diodes with the same color in the corresponding set of the adjacent row are located at different column positions. Here, two rows of the light emitting diodes 133 and 134 are disposed on the light emitting diode light bar 13, each of the light emitting diodes in the first row of the light emitting diodes 133 having the same color as the light emitting diodes in the corresponding group of the second row of the light emitting diodes 134 are disposed at different column positions, in fig. 2, the red light emitting diode is represented by R, the green light emitting diode is represented by G, and the blue light emitting diode is represented by B, the first row of the light emitting diodes 133 is provided with N groups of the light emitting diodes, the three colors of the light emitting diodes in each group of the light emitting diodes are arranged in sequence BGR, the second row of the light emitting diodes 134 is also provided with N groups of the light emitting diodes, the three colors of the light emitting diodes in each group of the light emitting diodes are arranged in sequence RGB, where N is an integer and can be set according to specific conditions such as, here, the color of the leds at the middle column position of each group of leds in the first row 133 is the same as the color of the leds at the middle column position of the corresponding group of leds 134 in the second row, while the color of the leds at the two side column positions is different from the color of the leds at the two side column positions of the corresponding group of leds 134 in the second row, since then for the leds of one color, there are leds of two other colors in the adjacent columns or in the same and adjacent columns, for example, in the above example, for the leds of B color, there are leds of G and R in the same and adjacent columns, and for the leds of G color, there are leds of B and R in the adjacent columns, and the light of three colors can be mixed together in the adjacent two columns, mix the light effect even, and the emitting diode of same colour in two upper and lower lines is located same row among the prior art, and this kind of arrangement makes every emitting diode's colour the same, mixes the light effect and is even inadequately, consequently the embodiment of the utility model provides an in emitting diode arrangement for prior art's arrangement more can evenly mix the light, the white light that forms of mixing has wideer colour gamut moreover.
It should be noted that, in addition to the arrangement described in the above example, other arrangements are possible, such as: RBG/GBR, BRG/GRB, RBG/RGB (first row of leds 133 per group of leds/second row of leds 134 per group of leds), etc., and will not be described in detail herein. Meanwhile, three or more rows of light emitting diodes may be arranged according to the arrangement of the light emitting diodes in each row, as described above, depending on the specific conditions such as the thickness of the incident end surface 111 of the light guide plate 11. The red light-emitting diode, the green light-emitting diode and the blue light-emitting diode can adopt tricolor LEDs, the spectral distribution of the tricolor LEDs has narrower bandwidth in a peak wavelength region, and the combined and lightened red light-emitting diode, the green light-emitting diode and the blue light-emitting diode are matched with a color filter film of a liquid crystal panel, so that the red light-emitting diode, the green light-emitting diode and the blue light-emitting diode can have higher light.
Fig. 3 is a schematic diagram of an embodiment of an lcd device, which includes an lcd panel 31 and an edge-lit backlight module, the edge-lit backlight module includes a light guide plate 11, a reflective paper 12 and an led light bar 13, wherein,
the end parts of both sides of the light guide plate 11 are provided with incident end surfaces 111;
here, in implementation, a regularly distributed white pattern or an injection-molded microstructure pattern may be printed on the bottom surface of the light guide plate 11 for scattering light entering the light guide plate.
The light emitting diode light bars 13 are arranged on two sides of the light guide plate 11 and are opposite to the incident end surface 111; the led light bar 13 is provided with a circuit board 131 and leds 132 mounted on the circuit board 131, the circuit board 131 is provided with at least two rows of leds, each row of leds includes a plurality of sets of leds, each set of leds is provided with Red leds (Red, R), Green leds (Green, G) and Blue leds (Blue, B) in the same arrangement order, and at least two colors of leds and leds in the same color in corresponding sets of adjacent rows are located in different column positions, which can be referred to fig. 2 for specific implementation;
the reflective paper 12 is disposed between the led light bar 13 and the light guide plate 11, the reflective paper 12 surrounds the incident end surface 111 of the light guide plate 11, a plurality of small holes 122 having the same size as the leds 132 on the led light bar 13 are formed on the surface of the reflective paper 12, and the light-emitting surface of the leds 132 in the led light bar 13 passes through the small holes 122. The reflective paper 12 and the light guide plate 11 form a closed air reflection area to reduce the light overflow of the light emitting diode light bar 13;
the red, green and blue light rays emitted by the led light bar 13 enter the light guide plate 11 through the incident end surface 111 of the light guide plate 11, are mixed into white light in the light guide plate 11, and are subjected to a series of scattering and refraction in the light guide plate 11 to become a surface light source, which is emitted from the upper surface of the light guide plate 11 as a light source of the liquid crystal display panel 31.
In summary, implement the embodiment of the present invention, through being provided with two at least rows of light emitting diodes at the light emitting diode lamp strip, every row of light emitting diodes includes multiunit light emitting diode, every group of light emitting diode is provided with red light emitting diode, green light emitting diode and blue light emitting diode that the arrangement order is the same, and the light emitting diode that has two kinds of colours at least corresponds the same light emitting diode of colour in the group with adjacent row and is located not the position of being listed as, can make the light emitting diode of one of them colour all have the light emitting diode of two kinds of other colours in adjacent row or in same row and adjacent row, thereby realize being located this arrangement of same row and can more evenly mix the light for the light emitting diode of the same colour in two upper and lower rows, and the white light that forms of mixing has wider colour.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (4)
1. A side-light type backlight module comprises
The light guide plate, the both sides end of the said light guide plate has incident end faces;
the light emitting diode light bars are arranged on two sides of the light guide plate and are opposite to the incident end face; it is characterized in that the preparation method is characterized in that,
the LED light bar is provided with at least two rows of LEDs, each row of LEDs comprises a plurality of groups of LEDs, each group of LEDs is provided with red LEDs, green LEDs and blue LEDs which are arranged in the same order, and at least two colors of LEDs and the LEDs with the same color in the corresponding group of the adjacent row are positioned on different column positions.
2. The backlight module of claim 1, further comprising:
the reflection paper is arranged between the light-emitting diode light bar and the light guide plate, the reflection paper surrounds the incident end face, a plurality of small holes with the same size as the light-emitting diodes on the light-emitting diode light bar are formed in the surface of the reflection paper, and the light-emitting face of each light-emitting diode penetrates through the small holes.
3. A liquid crystal display comprises a liquid crystal display panel and a side-light type backlight module, wherein the side-light type backlight module comprises
The light guide plate, the both sides end of the said light guide plate has incident end faces;
the light emitting diode light bars are arranged on two sides of the light guide plate and are opposite to the incident end face; it is characterized in that the preparation method is characterized in that,
the LED light bar is provided with at least two rows of LEDs, each row of LEDs comprises a plurality of groups of LEDs, each group of LEDs is provided with red LEDs, green LEDs and blue LEDs which are arranged in the same order, and at least two colors of LEDs and the LEDs with the same color in the corresponding group of the adjacent row are positioned on different column positions.
4. The liquid crystal display of claim 3, further comprising:
the reflection paper is arranged between the light-emitting diode light bar and the light guide plate, the reflection paper surrounds the incident end face, a plurality of small holes with the same size as the light-emitting diodes on the light-emitting diode light bar are formed in the surface of the reflection paper, and the light-emitting face of each light-emitting diode penetrates through the small holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201328997U CN201439906U (en) | 2009-06-18 | 2009-06-18 | Edge-lighting backlight module and liquid crystal display (LCD) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201328997U CN201439906U (en) | 2009-06-18 | 2009-06-18 | Edge-lighting backlight module and liquid crystal display (LCD) |
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| Publication Number | Publication Date |
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| CN201439906U true CN201439906U (en) | 2010-04-21 |
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| CN2009201328997U Expired - Fee Related CN201439906U (en) | 2009-06-18 | 2009-06-18 | Edge-lighting backlight module and liquid crystal display (LCD) |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846255A (en) * | 2010-05-12 | 2010-09-29 | 威海华菱光电有限公司 | Light source of illumination device |
| WO2013143158A1 (en) * | 2012-03-30 | 2013-10-03 | 深圳市华星光电技术有限公司 | Light-emitting diode light strip structure |
| CN105485573A (en) * | 2015-12-31 | 2016-04-13 | 广东晶科电子股份有限公司 | High-colour-gamut direct-type LED backlight module |
| CN105629577A (en) * | 2016-03-31 | 2016-06-01 | 上海天马微电子有限公司 | Backlight unit, display screen and display device |
| CN105717697A (en) * | 2014-12-04 | 2016-06-29 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN107991808A (en) * | 2017-12-22 | 2018-05-04 | 深圳市华星光电技术有限公司 | A kind of side entering type field sequence displayer and its backing structure |
| CN119335780A (en) * | 2024-11-13 | 2025-01-21 | 武汉华星光电技术有限公司 | Backlight module |
-
2009
- 2009-06-18 CN CN2009201328997U patent/CN201439906U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846255A (en) * | 2010-05-12 | 2010-09-29 | 威海华菱光电有限公司 | Light source of illumination device |
| WO2013143158A1 (en) * | 2012-03-30 | 2013-10-03 | 深圳市华星光电技术有限公司 | Light-emitting diode light strip structure |
| CN105717697A (en) * | 2014-12-04 | 2016-06-29 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN105485573A (en) * | 2015-12-31 | 2016-04-13 | 广东晶科电子股份有限公司 | High-colour-gamut direct-type LED backlight module |
| CN105629577A (en) * | 2016-03-31 | 2016-06-01 | 上海天马微电子有限公司 | Backlight unit, display screen and display device |
| CN105629577B (en) * | 2016-03-31 | 2019-10-01 | 上海天马微电子有限公司 | Backlight unit, display screen and display device |
| CN107991808A (en) * | 2017-12-22 | 2018-05-04 | 深圳市华星光电技术有限公司 | A kind of side entering type field sequence displayer and its backing structure |
| CN119335780A (en) * | 2024-11-13 | 2025-01-21 | 武汉华星光电技术有限公司 | Backlight module |
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| Date | Code | Title | Description |
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| 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: 20100421 Termination date: 20120618 |