Royal Display Co.,Limited
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Custom LED Display Seven Segment Display Multi-Color Alphanumeric 7 Segment Led For Household
Quick Detail of 7 segment LED display
7-segment (or “seven-segment) LED displays are commonly used to display digital information. Each segment consists of one or more LEDs and can be lit independently of all the others to form the digits 0 to 9. A limited range of alphabetic characters can also be formed but these are of mixed case and can be difficult to read.
The standard segment identification is shown in Figure 1 and segments are named A to G starting at the top and going clockwise with G being the centre segment.
Typically the displays have a common pin for all the LED anodes or cathodes. Eight pins will suffice for a true seven-segment display whereas nine are required for one with a decimal point.
Specification of 4 Digit 7 segment LED Display
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=20mA | 2.8 | 3.3 | V | |
| Reverse Voltage | Vr | Ir=10uA | 30 | V | ||
| Luminous Intensty | Iv | If=20mA | 30 | mcd | ||
| Spectrum With Of Half Value | △λ | If=20mA | 30 | nm | ||
| Wavelength | Dλ | If=20mA | 473 |
| Parameter | Symbol | Ratings | Unit |
| Forward Current(per dice) | Ipm | 20 | mA |
| Reverse Voltage(per dice) | Vr | 5 | V |
| Power Dissipation(per dice) | Pm | 80 | mW |
| Operating Temperature Range | Topr | -40~+120 | ºC |
| Storage Temperature Range | Tstg | -40~+120 | ºC |
| Solder Temperature(3 sec) | Th | 260 | ºC |
Application About Digit Number LED Display
-- Audio Equipment or instrument panels;
-- General using for digital indicators;
-- Multimedia products;
-- Bank exchange rate display;
-- LED clock display;
-- Display for gas station and other various display areas of equipment/machine.
Advantages of seven segment LED display
1. Emitte lights under the condition of low voltage and small current drive; can be compatible with CMOS, ITL circuit;
2. Short response time when emitt lights (<0.1uS), excellent monochromaticity and high-frequency, big viewing angle, standard brightness, low power consumption, stable performance;
3. Prompt reply your inquiry within 24 Hrs;
4. Professional first class staffs answering your demands very smoothly;
5. Whatever big or small order, we will serve you with our best quality and superior service;
6. 100% QC inspection before shipping;
7. TUV listed meterials, Competitive price;
FAQ About Digital Number LED Display
Q1. Can I have a sample order for your products?
A: For standard type,Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2. What about the lead time?
A:Sample needs 3-7 days, mass production time needs 1-3 weeks.
Q3. Do you have any MOQ limit for the order?
A: Low MOQ, 1pc for sample checking is available for most types.
Q4. How to proceed an order?
A: Firstly let us know your requirements or application. Secondly We quote according to your requirements or our suggestions. Thirdly customer confirms the samples and places deposit for formal order. Fourthly We arrange the production.
Q5. Is it OK to print my logo on the product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.
Q6: How to deal with the faulty?
A: Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.2%. Secondly, during the guarantee period, we will send new lights with new order for small quantity.
For defective batch products, we will resend them to you or we can discuss the solution including re-call according to real situation.