CN102478174A - LED (Light-Emitting Diode) hybrid method of light-emitting diode light bar and light-emitting diode light bar as well as backlight module - Google Patents
LED (Light-Emitting Diode) hybrid method of light-emitting diode light bar and light-emitting diode light bar as well as backlight module Download PDFInfo
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- CN102478174A CN102478174A CN2010105561930A CN201010556193A CN102478174A CN 102478174 A CN102478174 A CN 102478174A CN 2010105561930 A CN2010105561930 A CN 2010105561930A CN 201010556193 A CN201010556193 A CN 201010556193A CN 102478174 A CN102478174 A CN 102478174A
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Abstract
The invention discloses an LED (Light-Emitting Diode) hybrid method of a light-emitting diode light bar and aims at providing the LED (Light-Emitting Diode) hybrid method of the light-emitting diode light bar, which can reduce the cost by fully using the LED output. The LED (Light-Emitting Diode) hybrid method comprises the following steps of: grading LEDs according to the chrominance, luminance and voltage; respectively pairing the two grades of LEDs according to the chrominance, luminance and voltage, and classifying the paired LEDs with the same chrominance as the same category, the paired LEDs with the same luminance as the same category and the paired LEDs with the same voltage as the same category; selecting an appropriate LED category according to the chrominance, luminance and voltage of the LED light bar; and selecting a grade of LEDs and another grade of LEDs which are paired with the grade of LEDs under the category to be arranged on the LED light bar at intervals in a hybrid manner. The invention also provides the LED light bar manufactured according to the method and a backlight module with the LED light bar. The LED hybrid method can be used for manufacturing the LED light bar of the backlight module of a liquid crystal display and the backlight module.
Description
Technical field
The present invention relates to module backlight, especially relate to a kind of LED mixed method and LED lamp bar of LED lamp bar of module backlight, module backlight.
Background technology
Lcd technology is more and more ripe, and display unit such as TV are also from using traditional kinescope liquid crystal display till now.Because LCDs is passive luminous display screen, liquid crystal itself is not luminous, so LCDs needs module backlight that light source is provided, divides from the classification of light source, can be divided into CCFL module backlight, LED-backlit module etc.Along with more and more stronger to the demand of environmental protection and low energy consumption, LED is widely used in the LED-backlit module.
LED (Light Emitting Diode, light emitting diode) is a kind of solid-state semiconductor devices, and it can directly be converted into light to electricity.The heart of LED is a semi-conductive wafer, and an end of wafer is attached on the support, and an end is a negative pole, and the other end connects the positive pole of power supply, makes entire wafer by epoxy encapsulation.Semiconductor wafer is made up of two parts, and a part is a P-type semiconductor, occupies an leading position in its hole, the inside, and the other end is a N-type semiconductor, mainly is electronics here.When these two kinds of semiconductors couple together, just form one " P-N knot " between them.When electric current acted on this wafer through lead, electronics will be pushed to the P district, and electronics will send energy with the form of photon, the luminous principle of LED that Here it is then with hole-recombination in the P district.And the color of light wavelength decision light, it is to be determined by the material that forms the P-N knot.Because the difference of P-N knot material, each led chip is produced all and is had nothing in common with each other, and is packaged into LED at last and has different voltages with different, colourity and brightness.General producer all can be divided into some shelves with LED according to brightness, colourity and voltage according to certain method.
Field of backlights has very high requirement to the colourity of LED, generally all requires chromaticity distortion to be no more than certain scope.So the application of LED all has strict requirement respectively to colourity, brightness and voltage.Present LED-backlit module all adopts the identical LED of brightness, colourity and voltage to be made into a LED lamp bar when using LED, and each TV all uses same LED lamp bar to guarantee the requirement of TV colourity.
Though present lamp bar can guarantee to adopt the LED of the TV that identical LED makes to have identical colourity, brightness and voltage; But when LED brightness, the colourity of the use of different LED lamp bar differ big; The colourity of the different LED lamp bar that it is made into differs also bigger, thereby makes final different TV colourity also differ also bigger.Obviously, prior art not only need be selected the LED of identical colourity when making LED lamp bar, make the utilization rate of LED lower, and make the colourity between the display unit of finally processing such as different TVs differ bigger.
Summary of the invention
The utilization rate lower technical problem of the present invention in order to solve prior art LED provides a kind of LED mixed method and LED lamp bar of LED lamp bar, module backlight.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts comprises the following steps: for the LED mixed method of a kind of LED lamp bar of design
With LED according to colourity, brightness and voltage stepping;
According to colourity, brightness and voltage two grades of LED are matched respectively, and the identical LED of colourity is classified as same classification after will matching, the identical LED of pairing back brightness is classified as same classification, and the identical LED of pairing back voltage is classified as same classification;
Colourity, brightness and voltage according to LED lamp bar are selected suitable LED classification;
Be arranged on the LED lamp bar selecting one grade of LED to mix at interval under this classification with another grade LED that matches with it.
The principle that said colourity pairing adopts head and the tail to match is matched.
Said brightness pairing adopts close principle to match.
Said voltage pairing adopts close principle to match.
Said brightness and voltage all only are divided into one type.
Said LED lamp bar is the lamp bar of module backlight.
The present invention also provides a kind of LED lamp bar of processing according to said method.
The present invention also provides a kind of module backlight, comprises the LED lamp bar of processing according to said method.
The present invention passes through LED according to colourity, brightness and voltage stepping; And the LED behind the stepping matched in twos; The pairing back identical LED of colourity is classified as same classification, the identical LED of brightness are classified as same classification, LED that voltage is identical is classified as same classification, then according to colourity, brightness and the voltage request of LED lamp bar select under a certain classification one grade of LED and with it another grade LED of pairing mix at interval and be arranged on the LED lamp bar.Thereby the mode through mixing all uses all LED to greatest extent, has improved the utilization rate of LED, has reduced cost.Simultaneously,, the colourity difference between the displays such as different TVs that the LED by different colourities makes is obviously reduced, be not easy to differentiate because the light of LED of pairing mixes each other.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the present invention is elaborated, wherein:
Fig. 1 is the sketch map one of embodiment of the invention LED colourity pairing;
Fig. 2 is the sketch map two of embodiment of the invention LED colourity pairing;
Fig. 3 is the sketch map three of embodiment of the invention LED colourity pairing;
Fig. 4 is the sketch map four of embodiment of the invention LED colourity pairing;
Fig. 5 is the sketch map five of embodiment of the invention LED colourity pairing;
Fig. 6 is that embodiment of the invention LED is according to pairing, the subject diagram of Fig. 1 to method shown in Figure 5
Fig. 7 is embodiment of the invention LED brightness pairing, subject diagram;
Fig. 8 is the pairing of embodiment of the invention LED voltage, subject diagram.
The specific embodiment
The LED mixed method of LED lamp bar of the present invention comprises the following steps:
1, with LED according to colourity, brightness and voltage stepping
1.1 colourity stepping
The LED that production firm produces can be divided into eight grades of A1, A2, A3, A4, B1, B2, B3, B4 according to colourity, and wherein the colourity of A1, B1 is adjacent, and the colourity of A2, B2 is adjacent, and the colourity of A3, B3 is adjacent, and the colourity of A4, B4 is adjacent.
1.2 brightness stepping
The brightness main product of the LED of production firm is gone out to be divided into five grades of LA, LB, LC, LD, LE.
1.3 voltage stepping
The voltage of the LED of production firm is divided into VA, VB, VC third gear.
2, to two grades of LED pairings, and the identical LED of colourity is classified as same classification after will matching
In the present embodiment, the principle that matches according to head and the tail is matched to two grades of LED.
In the present invention, for convenience, definition head and the tail match for: suppose LED is divided into the N shelves, then be paired into (1, N), (2, N-1) ... (M, N-M-1).
2.1 colourity pairing, classification
See also Fig. 1, according to the principle that head and the tail match A1, A2, A3, A4, B1, B2, B3, eight grades of LED of B4 are matched, wherein, A1B4, A2B3, A3B2, A4B1 are paired into 4 pairs, and the colourity of two grades of LED that constitute respectively is identical, can be classified as the first kind.
See also Fig. 2, the principle that matches according to head and the tail is equally matched to A1, A2, A3, B1, B2, six grades of LED of B3, and wherein, A1B3, A2B2, A3B1 are paired into 3 pairs, and the colourity of two grades of LED that constitute respectively is identical, can be classified as second type.
See also Fig. 3, the principle that matches according to head and the tail is equally matched to A2, A3, A4, B2, B3, six grades of LED of B4, and wherein, A2B4, A3B3, A4B2 are paired into 3 pairs, and the colourity of two grades of LED that constitute respectively is identical, can be classified as the 3rd type.
See also Fig. 4, the principle that matches according to head and the tail is equally matched to B1, B2, B3, B4 fourth gear LED, and wherein, B1B4, B2B3 are paired into 2 pairs, and the colourity of two grades of LED that constitute respectively is identical, can be classified as the 4th type.
See also Fig. 5, the principle that matches according to head and the tail is equally matched to A1, A2, A3, A4 fourth gear LED, and wherein, B1B4, B2B3 are paired into 2 pairs, and the colourity of two grades of LED that constitute respectively is identical, can be classified as the 5th type.
Pairing, classification chart according to after Fig. 1 method pairing extremely shown in Figure 5 are as shown in Figure 6.
2.2 brightness pairing, classification
Principle according to brightness is close is matched to it, two grades of LED pairings that brightness is close.Because human eye does not have colourity responsive to brightness, so, can only be classified as one type.Its pairing, classification chart are as shown in Figure 7.
2.3 voltage pairing, classification
Principle according to voltage is close is matched to it, two grades of LED pairings that voltage is close.Equally, voltage can only be classified as one type.Its pairing, classification chart are as shown in Figure 8.
3, select suitable LED classification according to colourity, brightness and the voltage of LED lamp bar
From colourity classification chart, brightness classification chart and voltage classification chart, select respectively and a classification that only adapts to according to colourity, brightness and the voltage of the LED lamp bar that designs.When brightness and voltage only are divided into a time-like, can only select according to colourity.When consistent, then select the LED under the first kind LED like the colourity of colourity and the first kind of the LED lamp bar of design.
4, select under this classification one grade of LED and with it another grade LED of pairing mix at interval and be arranged on the LED lamp bar
As, when colourity, brightness, the voltmeter of a LEDs is shown A3LCVB, we just can come to match with it according to colourity, brightness and voltage when mixing mounts.As H, find out matched L ED I with it, adopt the spaced mode of HIHI that LED is mounted on the LED lamp bar to this LEDs.
Because human eye is relatively more responsive to colourity, thus in an embodiment it is classified as 5 types, and brightness, voltage are classified as one type, so mainly be pairing, The classification basis with colourity.The LED of five types of colourities of embodiment one is contained on same the TV and can differentiates easily, but is contained in different TVs, and is then not obvious.
Certainly, the principle that pairing can also not use head and the tail to match is matched, and adopts alternate manner to match, and what the back colourity of will matching again was identical is classified as one type.Because the principle that head and the tail match pairing is simple, easy operating, the principle that the preferred head and the tail of the present invention match is matched.
The present invention matches LED, classify through the mode of pairing, classification; And then select the LED classification that adapts to it according to the designing requirement of the LED lamp bar of module backlight, being arranged on the LED lamp bar selecting one grade of LED to mix at interval under this classification again with another grade LED that matches with it.Mount the LED mode through this mixing, all outputs with LED that can maximum magnitude all use, and improve the LED utility ratio, reduce cost.The LED lamp bar that the LED mixing method of attaching of LED lamp bar is made according to the present invention is mainly used in the module backlight of liquid crystal indicator.
Claims (8)
1. the LED mixed method of a LED lamp bar is characterized in that comprising the following steps:
With LED according to colourity, brightness and voltage stepping;
According to colourity, brightness and voltage two grades of LED are matched respectively, and the identical LED of colourity is classified as same classification after will matching, the identical LED of pairing back brightness is classified as same classification, and the identical LED of pairing back voltage is classified as same classification;
Colourity, brightness and voltage according to LED lamp bar are selected suitable LED classification;
Be arranged on the LED lamp bar selecting one grade of LED to mix at interval under this classification with another grade LED that matches with it.
2. the LED mixed method of LED lamp bar according to claim 1 is characterized in that: the principle that said colourity pairing adopts head and the tail to match is matched.
3. the LED mixed method of LED lamp bar according to claim 1 is characterized in that: said brightness pairing adopts close principle to match.
4. the LED mixed method of LED lamp bar according to claim 1 is characterized in that: said voltage pairing adopts close principle to match.
5. the LED mixed method of LED lamp bar according to claim 1 is characterized in that: said brightness and voltage all only are divided into one type.
6. the LED mixed method of LED lamp bar according to claim 1 is characterized in that: said LED lamp bar is the lamp bar of module backlight.
7. LED lamp bar of processing according to each said method of claim 1 to 6.
8. a module backlight comprises the LED lamp bar of processing according to each said method of claim 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105561930A CN102478174A (en) | 2010-11-24 | 2010-11-24 | LED (Light-Emitting Diode) hybrid method of light-emitting diode light bar and light-emitting diode light bar as well as backlight module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105561930A CN102478174A (en) | 2010-11-24 | 2010-11-24 | LED (Light-Emitting Diode) hybrid method of light-emitting diode light bar and light-emitting diode light bar as well as backlight module |
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| CN102478174A true CN102478174A (en) | 2012-05-30 |
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| CN2010105561930A Pending CN102478174A (en) | 2010-11-24 | 2010-11-24 | LED (Light-Emitting Diode) hybrid method of light-emitting diode light bar and light-emitting diode light bar as well as backlight module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282178A (en) * | 2018-08-24 | 2019-01-29 | 京东方科技集团股份有限公司 | Lamp bar and preparation method thereof, display device |
| CN111999938A (en) * | 2020-09-14 | 2020-11-27 | 业成科技（成都）有限公司 | Backlight module and liquid crystal display thereof |
| CN112396075A (en) * | 2019-08-15 | 2021-02-23 | 西安诺瓦星云科技股份有限公司 | Lamp panel classification method, device and system and computer readable storage medium |
Citations (3)
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| CN101625478A (en) * | 2008-07-09 | 2010-01-13 | 乐金显示有限公司 | Led organization method for liquid crystal display module |
| JP2010020097A (en) * | 2008-07-10 | 2010-01-28 | Hitachi Ltd | Liquid crystal display device |
| CN101806415A (en) * | 2010-03-08 | 2010-08-18 | 友达光电股份有限公司 | Photoelectric device, display and backlight module |
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2010
- 2010-11-24 CN CN2010105561930A patent/CN102478174A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625478A (en) * | 2008-07-09 | 2010-01-13 | 乐金显示有限公司 | Led organization method for liquid crystal display module |
| JP2010020097A (en) * | 2008-07-10 | 2010-01-28 | Hitachi Ltd | Liquid crystal display device |
| CN101806415A (en) * | 2010-03-08 | 2010-08-18 | 友达光电股份有限公司 | Photoelectric device, display and backlight module |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282178A (en) * | 2018-08-24 | 2019-01-29 | 京东方科技集团股份有限公司 | Lamp bar and preparation method thereof, display device |
| CN109282178B (en) * | 2018-08-24 | 2022-02-08 | 京东方科技集团股份有限公司 | Light bar, preparation method thereof and display device |
| US11598498B2 (en) | 2018-08-24 | 2023-03-07 | Beijing Boe Optoelectronics Technology Co., Ltd | Light bar, method for fabricating same, and display apparatus |
| CN112396075A (en) * | 2019-08-15 | 2021-02-23 | 西安诺瓦星云科技股份有限公司 | Lamp panel classification method, device and system and computer readable storage medium |
| CN111999938A (en) * | 2020-09-14 | 2020-11-27 | 业成科技（成都）有限公司 | Backlight module and liquid crystal display thereof |
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Application publication date: 20120530 |