 What's LED backlight?
The backlight has to be installed on the back of LCD panel since LCD is not of characteristic of illuminating, the use of backlight makes LCD display reach full and colorful results, so the backlight has been opt electronic components of LCD display, that is to say, the backlight module is the key part of LCD display, and it is one kind of passive component which adheres to LCD display.
The development of backlight may be traced its source to World War Ⅱ period, the microminiaturize tungsten filament lamp had been used as the backlight of aero plane’s meter at that time, and this became the rudiment of backlight. With the 50 years passing by, the backlight has become the absolute subject in electronics area. And it has been developed into hot product step by step. Now there are some major kinds of backlights: LED (Light Emitting Diode) backlight; halogen tungsten lamp; EL (Electro-luminescent) backlight; CCFL (Cold Cathode Fluorescent Lamps) backlight; CLL (Cathode Launch Lamp) and Metal halide lamp, etc.
Among them, CCFL and LED backlights have been widely applied on TFT-LCD (CCFL), and small area LCD display (LED), since they are of matured artwork and steady performance. The side LED backlight is the major backlight with uniform illuminance and high efficiency.
The application range of LED backlight:
Any products with LCD display, such as:
Mobile Phone, PDA, Game Player, Home electric appliance (refrigerator, air conditioner, water heater, washing machine, oil smoke extractor), oxygen generator, Audio and Video products, apparatus and instrument.
LED backlight supplies light source to LCD panel，it constitutes LED lamp, Light guide, diffuser, silver side sticker, etc. LED backlight is of high illuminance intensity, long lifetime, and uniform illuminance. LED backlight can be divided into side LED backlight and bottom LED backlight according to the different distribution position. With the development tends to more bright, light and thin, Side LED backlight has become the mainstream of present backlight development.
With the rapid advance of international IT industry, LCD industry’ new products will come out constantly; the dimensions of LCD products will trend towards more
diversify and portable, as one of core part of LCD products, LED backlight has to commit itself to the products’ diversification and portability, and certainly will cooperate the trend of development.
LED Backlight CIE Chromaticity Digaram and Electro-optical Characteristic Curve
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Our Typical LED Backlights
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| No. |
Part No. |
Outline Dimension |
No. |
Part No. |
Outline Dimension |
No. |
Part No. |
Outline Dimension |
| 1 |
LE04011N-23 |
42.0X13.0X1.2mm |
31 |
LE03001-06A |
30.5X15X1.4mm |
61 |
LE04021A-09 |
33X75X3.8mm |
| 2 |
LE04161A-09 |
126.0X105.0X2.2mm |
32 |
LE03001-06B |
42.9X12.4X1.5mm |
62 |
LE04021B-06 |
28X87X3.2mm |
| 3 |
LE04061E-09 |
96.5X49.5X3.5mm |
33 |
LE03001-06C |
73.5X18X3.2mm |
63 |
LE04021B-09 |
28X87X3.2mm |
| 4 |
LE04021G-06 |
35.1X14.0X3.0mm |
34 |
LE03001-06G |
34.8X33.2X2mm |
64 |
LE04021H-04 |
53.5X24.0X3.0mm |
| 5 |
LE04041C-09 |
107.0X25.0X3.7mm |
35 |
LE03001-09F |
88X25X3.2mm |
65 |
LE04021H-04 |
53.5X24.0X3.0mm |
| 6 |
LE04012C-09 |
84.0×14.0×3.0mm |
36 |
LE03001-56F |
88X25X3.2mm |
66 |
LE04021L-09 |
66.1X41.2X3.3mm |
| 7 |
LE04031C-06 |
56.0×36.0×3.5mm |
37 |
LE03002-09A |
114.2X12X3.5mm |
67 |
LE04022D-06 |
142.5×23.4×3.3mm |
| 8 |
LE04022G-06 |
186.2×69.5×3.2mm |
38 |
LE03002-09C |
65X21X3.3mm |
68 |
LE04031U-04 |
37.6×44.0×3.0mm |
| 9 |
LE03001-09H |
67.5X16.4X3mm |
39 |
LE03021-04 |
103X46X2.8mm |
69 |
LE04051A-26 |
65X101.5X3.2mm |
| 10 |
LE03001-09K |
56X10X3.5mm |
40 |
LE03021-05A |
29X23.3X2.0mm |
70 |
LE04011L-06 |
107.5X17.0X4.0mm |
| 11 |
LE03002-09E |
101X9.5X3.2mm |
41 |
LE03021-06D |
95X50X3mm |
71 |
LE04011M-06 |
94.2X23.5X4.9mm |
| 12 |
LE04011N-23 |
42.0X13.0X1.2mm |
42 |
LE03021-09C |
99X29X3.2mm |
72 |
LE04021F-09 |
104.0X24.0X3.3mm |
| 13 |
LE04011T-06 |
103.7X47.1X2.2mm |
43 |
LE03031-05 |
44X37.5X2.0mm |
73 |
LE04031B-06 |
77.5X14.6X3.5mm |
| 14 |
LE04021C-09 |
16X97.5X3.5mm |
44 |
LE03041-06A |
110.5X39X3.2mm |
74 |
LE04012B-09 |
109.6×23.0×3.2mm |
| 15 |
LE04021E-09 |
14X101X3.5mm |
45 |
LE03041-06C |
93X39X3.5mm |
75 |
LE04022C-04 |
44.0×15.4×3.2mm |
| 16 |
LE04021G-06 |
35.1X14.0X3.0mm |
46 |
LE03011L-06 |
27.46X28.96X0.9mm |
76 |
LE04031D-00 |
44.5×13.0×1.7mm |
| 17 |
LE04021K-06 |
86.5X15.0X4.2mm |
47 |
LE03011N-26 |
17.0X39.0X1.3mm |
77 |
LE04031E-09 |
99.2×29.5×3.4mm |
| 18 |
LE04031A-09 |
87X96X3.5mm |
48 |
LE03031C-00 |
17.0X45.0X3.4mm |
78 |
LE0201A-09 |
95X25X3.0mm |
| 19 |
LE04031C-06 |
56.0X36.0X3.5mm |
49 |
LE03042A-09 |
96X31X3.2mm |
79 |
LE0201B-09 |
57.2X23X3.2mm |
| 20 |
LE04031F-00 |
69.5X38.0X3.8mm |
50 |
LE04011A-09 |
17.0X60.0X2.3mm |
80 |
LE0201C-05 |
72X20.5X3.2mm |
| 21 |
LE04041A-06 |
25X105.5X3.7mm |
51 |
LE04011E-09 |
22.5X94X3.2mm |
81 |
LE0202A-05 |
114X17X4.0mm |
| 22 |
LE04041C-09 |
107.0X25.0X3.7mm |
52 |
LE04011F-06 |
20X94X3.5mm |
82 |
LE0202B-09 |
109.6X20.5X3.2mm |
| 23 |
LE04061E-09 |
96.5X49.5X3.5mm |
53 |
LE04011F-09 |
20X94X3.5mm |
83 |
LE0202C-09 |
93X22.6X3.2mm |
| 24 |
LE04121A-09 |
118.0X50.7X4.0mm |
54 |
LE04011Q-06 |
76.0X25.0X3.0mm |
84 |
LE0202D-06 |
115.2X34X3.0mm |
| 25 |
LE04161A-09 |
105X126X2.2mm |
55 |
LE04011Q-09 |
76.0X25.0X3.0mm |
85 |
LE0202D-09 |
115.2X34X3.0mm |
| 26 |
LEA02001-06S |
50X16.6X2.4mm |
56 |
LE04011Q-09 |
76.0X25.0X3.2mm |
86 |
LE02001-09 |
88.5X22.6X3.2mm |
| 27 |
LE02022-06Z |
121X37X3.2mm |
57 |
LE04011R-06 |
73.5×8.0×2.8mm |
87 |
LE02001-25 |
88.5X22.6X3.2mm |
| 28 |
LE02031-00D |
84.4X14.2X3.8mm |
58 |
LE04011R-06 |
73.5X8.0X8.5mm |
88 |
LE02001-09A |
87.8X15.3X3.2mm |
| 29 |
LE02071-45 |
75.5X48.5X3.2mm |
59 |
LE04012A-26 |
10X160X3.2mm |
89 |
LE02001-06A |
87.8X15.3X3.2mm |
| 30 |
LE03001-06 |
46.9X12.6X1.2mm |
60 |
LE04012A-45 |
10X160X3.0mm |
90 |
LE02001-09B |
90.3X19.7X3.2mm |
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| No. |
Part No. |
Outline Dimension |
No. |
Part No. |
Outline Dimension |
No. |
Part No. |
Outline Dimension |
| 91 |
LE02002-05 |
112X23.3X3.2mm |
121 |
LE04011K-09 |
18.7X91.3X3.2mm |
151 |
LE04031F-00 |
69.5×38.0×3.8mm |
| 92 |
LE02021-09 |
88.4X22.5X3.2mm |
122 |
LE04011L-06 |
108.5X17.0X4.0mm |
152 |
LE04011V-09 |
102.4×21.7×3.5mm |
| 93 |
LE02021-09A |
103X29X3.2mm |
123 |
LE04011M-06 |
23.5X94.2X4.8mm |
153 |
N/A |
N/A |
| 94 |
LE02021-09B |
98.2X23.5X3.2mm |
124 |
LE04012B-05 |
109.6X23.0X3.2mm |
154 |
LE04031J-00 |
42.3×23.1×3.0mm |
| 95 |
LE02022-09 |
112X24X3.2mm |
125 |
LE04021F-09 |
24.0X104X3.2mm |
155 |
LE04031K-06 |
38.8×13×0.95mm |
| 96 |
LE02031-00 |
89.4X22.6X3.2mm |
126 |
LE04022A-09 |
30X114X3.2mm |
156 |
LE04031L-00 |
31×13×0.95mm |
| 97 |
LE02031-00A |
41.5X34.1X3.2mm |
127 |
LE04022C-04 |
44.0X15.4X3.2mm |
157 |
LE04031G-06 |
113.8×38×2.2mm |
| 98 |
LE02032-00 |
112X23.3X3.2mm |
128 |
LE04031B-06 |
77.5X14.6X3.5mm |
158 |
LE04031H-06 |
90×41×3.2mm |
| 99 |
LE02041-09 |
110.7X32.8X3.2mm |
129 |
LE04041B-09 |
45X57X3.0mm |
159 |
LE04021K-06 |
86.5X15.0X4.2mm |
| 100 |
LE02042-09 |
96X31X3.3mm |
130 |
LE04061A-06 |
66X70X2.8mm |
160 |
LE04011W-05 |
66.6×16.6×5.0mm |
| 101 |
LE02051-09 |
131X38X3.8mm |
131 |
LE04061B-06 |
42X91X2.8mm |
161 |
LE04021L-00 |
53.6×32.0×2.8mm |
| 102 |
LE03001-09D |
88.1X23.5X3.2mm |
132 |
LE04061C-06 |
63X64X3.0mm |
162 |
LE04021M-06 |
60.0×27.0×3.2mm |
| 103 |
LE03001-09E |
92.8X13.1X3.2mm |
133 |
LE04061D-06 |
55X76X3.2mm |
163 |
LE04031M-00 |
28.4×20.4×2.0mm |
| 104 |
LE03002-09 |
108.2X13.5X3.2mm |
134 |
LE04071A-45 |
48X58X3.2mm |
164 |
LE04031N-00 |
36.0×13.0×0.95mm |
| 105 |
LE03002-09B |
98.3X17X3.5mm |
135 |
LEF04004A-09 |
60X95X2.8mm |
165 |
LE04021N-09 |
66.1×41.2×3.3mm |
| 106 |
LE03002-09D |
98X21X3.2mm |
136 |
LEF04007A-09 |
98.9X164.6X6.4mm |
166 |
LE04011X-06 |
50×24.0×2.2mm |
| 107 |
LE03011M-06 |
72.5x19.2x2.2mm |
137 |
LE05021C-09 |
80×27×3.2mm |
167 |
LE04031L-00 |
31.0×13×0.95mm |
| 108 |
LE03012F-09 |
27.2X102X2.7mm |
138 |
LE04011P-05 |
94.0X40.0X2.2mm |
168 |
LE04031P-00 |
29.0×19.5×1.1mm |
| 109 |
LE03021-09B |
92.7X24X3.6mm |
139 |
LE04041D-06 |
71.0×52.0×2.6mm |
169 |
N/A |
N/A |
| 110 |
LE03021F-09 |
24X93.5X3.4mm |
140 |
LE04041D-06 |
71.0X52.0X2.6mm |
170 |
LE04031Q-00 |
39.14×21.76×1.0mm |
| 111 |
LE03022-09 |
103.5X26X3.0mm |
141 |
LE04011P-05 |
94.0X40.0X2.2mm |
171 |
LE04011Y-09 |
66.0×15.0×3.7mm |
| 112 |
LE03022A-09 |
30.7X138.1X3.2mm |
142 |
LE03101A-09 |
126.5X118.0X2.8mm |
172 |
LE04021P-09 |
43.0×25.0×2.2mm |
| 113 |
LE03031-09A |
93.2X25.5X3.2mm |
143 |
LE04011D-09 |
38.2X12.2X1.2mm |
173 |
LE04022E-09 |
127×29.4×3.2mm |
| 114 |
LE03031B-09 |
29.5X102.2X3.4mm |
144 |
LE04021D-06 |
20X39.0X1.9mm |
174 |
LE04031R-06 |
39.3×51.6×1.2mm |
| 115 |
LE03041-09 |
67.6X33X3.8mm |
145 |
LE04022B-06 |
|
175 |
LE04041F-09 |
95.0×25.0×3.2mm |
| 116 |
LE04011B-06 |
17.0X61.7X3.2mm |
146 |
LE04031D-00 |
44.5X13.0X1.7mm |
176 |
LE04031S-00 |
88.8×44.8×3.7mm |
| 117 |
LE04011B-09 |
17.0X61.7X3.2mm |
147 |
LE05011E-09 |
86.4×17.1×3.2mm |
177 |
LE04011J-09 |
84.5×19.0×3.2mm |
| 118 |
LE04011C-05 |
17X99.5X2.6mm |
148 |
LE04012C-09 |
84.0X14.0X3.0mm |
178 |
LE04011Z-05 |
34.0×25.0×2.0mm |
| 119 |
LE04011G-09 |
20X81.5X5.0mm |
149 |
LE04031E-09 |
99.2X29.5X3.4mm |
179 |
LE04011S-09 |
106×11.5×3.5mm |
| 120 |
LE04011H-09 |
20X94.5X3.7mm |
150 |
LE04011T-06 |
103.7×47.1×2.2mm |
180 |
LE04041E-45 |
58.0×23.5×3.0mm |
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| No. |
Part No. |
Outline Dimension |
No. |
Part No. |
Outline Dimension |
| 181 |
LE04011I-09 |
36.4×16.0×1.0mm |
209 |
LE05011L-00 |
32.4×19.4×1.9mm |
| 182 |
LE05011A-06 |
81.4×36.9×3.0mm |
210 |
LE200 |
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| 183 |
LE04012D-09 |
146×39×3.3mm |
211 |
LE05022D-06 |
162×42×3.2mm |
| 184 |
LE04031V-06 |
67.92×63×3.2mm |
212 |
LE05012C-06 |
99×13.1×2.2mm |
| 185 |
LE05011B-06 |
27.9×17×2.0mm |
213 |
LE05011M-09(A)(B) |
40.7*30.9*1.05mm |
| 186 |
LE04021Q-06 |
38.5×28.5×1.0mm |
214 |
LE05011N-09 |
40.9*18.4*1.05mm |
| 187 |
LE04022F-05 |
146.0×30.0×3.0mm |
215 |
LE05011P-06 |
24.8*15*2.5mm |
| 189 |
LE05011D-06 |
37.8×69.5×1.0mm |
216 |
LE05011Q-09 |
108*29.6*7.6mm |
| 190 |
LE05031A-06 |
55.5×35.5×2.5mm |
217 |
LE05041B-09 |
84*42*3.0mm |
| 191 |
LE05031B-06 |
75×37×3.5mm |
218 |
LE04111A-09 |
136*67*3.2mm |
| 192 |
LE05021A-06 |
34.5×22.0×1.4mm |
219 |
LE05012D-04 |
96*18.7*3mm |
| 193 |
LE05042A-04 |
165.7×39.0×3.2mm |
220 |
LE201 |
37*34*3.6mm |
| 194 |
LE05011F-06 |
42.3×23.0×1.0mm |
221 |
LE05012E-09 |
95*23*2.85mm |
| 195 |
LE05041A-06 |
103×14.2×3.7mm |
222 |
LE05011R-05 |
76.1*34.5*9.77mm |
| 196 |
LE05011G-06 |
44.9×26.6×2.0mm |
223 |
LE05051A-05 |
95*57*3.0mm |
| 197 |
LE05011H-06 |
32.1×25.8×2.0mm |
224 |
LE05021D-06 |
103*50*14mm |
| 198 |
LE05011I-06 |
35.6×25×2.0mm |
225 |
LE05011S-09 |
39.5*20.5*1.2mm |
| 199 |
LE05021B-04 |
121.5*39*3.0 |
226 |
LE05021E-06 |
55.7*23.2*3.2mm |
| 200 |
LE05012A-09 |
106×20×3.0mm |
227 |
LE05012F-09 |
112.4*27.2*3.2mm |
| 201 |
LE05012B-05 |
98.4×12.7×3.5mm |
228 |
LE05031E-00/05/06 |
43.6*17.1*1.0mm |
| 202 |
LE05031D-06 |
112×28×3.0mm |
229 |
LE02021-09B |
98.2×23.5×3.2mm |
| 203 |
LE05031C-06 |
58×45×3.0mm |
230 |
LE04022A-05 |
117*32*3.2mm |
| 204 |
LE05022A-09 |
104.7×26.5×3.5mm |
231 |
LE2000 |
82*75*4.3mm |
| 205 |
LE05022C-09 |
97.9×24×3.5mm |
232 |
LE2001 |
96.6*74*3.5mm |
| 206 |
LE05022B-06 |
51×23×3.2mm |
233 |
LE2002 |
82.2*16*4.8mm |
| 207 |
LE05011J-06 |
42.7×14.9×1.0mm |
234 |
LE2003 |
116.4*27.2*3.2mm |
| 208 |
LE05011K-06 |
36×25×1.9mm |
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 QUALITY CONTROAL AND ASSURANCE
1. Sampling plan-U.S. Ministry of defense MIL-STD 105E level Ⅱ (single sampling plans) for IQC/QA;
2. Inspection Items and Criterions For Judgements: "Measuring Methods for light Emitting Diodes (No.11830)Ⅰ" and "Ⅱ Light Emitting Diodes (No.11829)" Stipulateed by ministry of economical affairs of R.O.C and by reference to Q.C standards prevailing in prominent LED plants worldwide;
3. Reliability Tests: general provisions for Environmental Tests of CNS-Cetegorized Electronic Parts:, 3623, 3634, 5637, 11233-11238, and U.S. Ministry of National Defense MIL-STD-750, etc. Specifications.
Test Items:
1. Thermal Shock Test
Operating Method:
LED products were placed in a chamber (-30℃±5℃) for 20±3 minutes, the temperature increased instantaneously to +80℃±5℃ for 20±3 minutes, the duration of the test shall be for 5 complete circles.
2. Humidity Test
Operating Method:
LED products were placed in a humidity chamber which is maintained at 40℃, 95% R.H. The duration of testing is for 96 hours at 20mA.
3. Life Test
Operating Method:
LED products were connected to a source of power and charged with 10mA at room temperature (25℃) for 1000 hours.
4. Solderability Test:
Operating Method:
The pins of LED products (1.60mm from body) dipped into tin which is maintained at 235℃±5℃, the duration of the test is for 5 seconds.
5. Vibration Test
Operating Method:
LED products were placed on a vibrator which is maintained at 10-55-10Hz per minute, 0.82mm amplitude. The duration of the test is for 5 minutes.
6. LED products were packed in corrugated carton box and fallen freely on 6 faces (3 sides + 3 surface) at diagnoal angle to the ground. The altitude of the fall will be in the range of 229~609mm considering of the pracked product.
Examples of Our LED backlight Specification: |
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