Sell EDS139 5V 6 Digit 7 Segment LCD Display Screen Static Driving TN Positive Display With White/Non Bac best price

Specifications: Model:EDS139 Appearance Size:137.16x46.38x2.8mm Visual Area Size:130.56x31.5mm Display Mode:TN,positive display Polaroid Type:full transparent Visual Angle:6 O'CLOCK Connection Type:metal pin Driving Way:static Driving Voltage:5.0V Operation Temperature:-302103~802103 Storage Temperature:-402103~902103 Common Problem: 1. The LCD screen has a reflective mode, a semi-transparent mode, and a full transparent mode, do not know what is the difference, how to choose? - Reflection mode: The lower polarizer is opaque, so it cannot be used in backlight. It is suitable for occasions with daytime or external light source. The advantage is that the contrast is higher; - Full transmission mode: the transmission rate is about 40%, it must be used with the backlight (otherwise, the component or PCB under the screen will be seen), the advantage is that the backlight brightness is high; - Semi-transparent mode: Between reflection and full-transmission mode, the transmission rate is about 30%. It can be used if it is connected to the backlight. It is more flexible. 2. LCD segment code screen has static drive and dynamic drive, how to distinguish? - Static drive: There is only one common COM, and each pixel is a separate electrode. The advantage is that the display effect is better than that of the dynamic drive, and the disadvantage is that there are many pins; - Dynamic drive: More than 2 common COMs, each electrode controls at least 2 or more pixels, and requires time division scan mode drive. 3. Can the LCD segment code screen be DC driven? What is the difference between driving with LED digital tube? - LED digital tube: DC drive, connected by a common terminal at the anode or cathode, with the difference of common or common; - LCD screen: AC drive, common side and driver side need to add AC square wave signal, relying on changing the phase of the two to control whether the corresponding pixel is displayed, this is the difference between the essence of LED digital tube, so there is no common yin or The saying of Gongyang. Never connect the common terminal COM directly to the ground, and display it by controlling the drive terminal to a high level. This will damage the LCD screen for a long time. 4. LCD segment code screen can be used without driver chip, direct MCU driver? - Statically driven segment code screen, if the number of IO ports of the microcontroller is enough, it can be directly driven; Package Included: 1 x Non/ White EDS139 LCD Display Screen