What is the power consumption of monochrome LCD?
Time：2023-10-27

The power consumption of monochrome LCD is usually related to 4 elements (without considering the external components).

LCD screen size, LCD screen type, chip type, backlight LED number

 

1. LCD Screen Size

Because the internal LCD is actually a line composition, and the larger the size of the LCD screen, in addition to the content will be more, the key is the distance between the lines will become longer, so the larger the size, the greater the power consumption.

 

2. LCD Screen Type

LCD will also have a classification, usually customers can often hear the LCD low impedance, high impedance, the so-called low impedance and high impedance, refers to the resistance value of the internal lines of the LCD, the lower the resistance value of the natural loss of current is lower, the power consumption is relatively low.

 

3. Chip Type

Here the chip type in fact and LCD power consumption is not directly related to the chip is actually its load capacity, and many people who are not professional enough tend to ignore this - point, which leads to the design of the LCD screen bugs and hidden problems!

When we design the LCD screen is to take into account the chip and glass matching, such as an LCD screen full load drive power consumption needs 100 microamps, while the chip's maximum support only to 80 microamps, the production of the LCD screen - once the need for full-screen display will appear no show, lack of scratch, contrast reduction, etc.

And each chip will be written in the specifications of its maximum support for the operating current. Therefore, if you need to develop a new LCD screen, you must not ignore the matching problem.

 

4. Backlight

In fact, if the light from the power consumption to consider, 99% of the power consumption of the LCD screen is undoubtedly consumed by the backlight.

The power consumption of the backlight is easy to calculate, usually calculated by the number of LED beads in the backlight, a standard 15mA power consumption of a light, 3 lights is 45mA.

In fact, it is easy to conclude that, in general, reflective LCD power consumption is the lowest, followed by semi-transparent LCD, the highest power consumption is definitely all-transparent LCD, because in order to ensure the display effect, all-transparent LCD is usually the most number of lights in the backlight.

So, after learning so much knowledge, I believe that we have made a step forward in the selection of LCDs, and we will share more knowledge about LCDs in the future to help you understand, if you are in need of customization or selection of a suitable LCD, please contact us.

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