digital signage exhibition

digital signage

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LCD touch screen cannot work, touch no response how to deal with

[Fault Phenomenon] One LCD touch screen doesn’t work, and there is no response when touching any part.   [Fault Analysis and Treatment] First check whether the connection interface is loose, and then check whether there is conflict between serial ports and interrupt number. If there is conflict, adjust resources to avoid conflict. Then check whether there are cracks on the surface of the touch screen. If there are cracks, replace them in time, Also need to check whether there is dirt on the touch screen surface, if there is, use a soft cloth to remove it. Observe and check whether the indicator light on the control box works normally. When it works normally, the indicator light is green and flashes.   If the above parts are normal, the touch screen can be checked by replacement method, first replace the control box, then replace the touch screen, and finally replace the host.   If it is a resistive touch screen, it can be overhauled as follows: 1)Check whether the connection of the touch screen is right, and whether one of the connections (taking 5V touch screen working voltage from the keyboard port) is connected. Please check the connection. 2)Observe the light condition of the touch screen control box. If it doesn’t light up or the red light is on, the control box is broken. Please replace it. 3)If not, please delete the touch screen driver and restart the computer, re-install the driver, or replace the driver with a newer version. 4)If

The difference between touch all-in-one and ordinary touchpad

In fact, until now, many people still confuse the touch all-in-one with an ordinary touchpad, and think that as long as the touchable screen is a touch all-in-one, this understanding is wrong. Bank ATM teller machines and traditional supermarket cash registers that we see every day belong to traditional touch panels instead of touch all-in-ones. Traditional touch panels are generally single-point or double-point touch, and touch all-in-ones are actually It can realize infrared or capacitive multi-touch. We will talk about the advantages and disadvantages of infrared touch and capacitive touch and their application fields next. What is the difference between a touch all-in-one machine and an ordinary touchpad, you must know Capacitive touch screens are currently mainly used for the display of high-end devices such as mobile phones, tablets, and computers. The touch function can be realized with the skin of a human finger, multi-point, handwriting, etc. can be realized without any problem. Capacitive touch screens cannot be touched with gloves, and there is no response to touch with gloves, and the larger the size of the product required, the more expensive it is. The capacitive screen all-in-one machine is more beautiful, more beautiful, lighter and thinner, pure flat surface, and easy to realize. With waterproof function, the reaction speed is more sensitive at the same time. Infrared touch screens are currently not used for the display of high-end devices such as mobile phones, tablets, and computers. The infrared touch screen is currently only for the display. The infrared touch

What are the pixels of LCD?

Pixel is a kind of unit. Generally speaking, it is invisible to the naked eye. How can we see the pixels of LCD? That is, if the image of LCD is magnified several times, many small square dots will be found. These small square dots are actually the so-called pixels.   The LCD splicing unit of LCD is a full-color screen, and red, green and blue are the primary colors of colors. Because LCD has many colors to realize, it needs to combine the red, green and blue lights to form pixels.   The pixel of LCD is a unit used to calculate the digital impression. Just like the photo taken, the digital impression also has continuous tone. If you enlarge the impression several times, you will find that these continuous colors are actually composed of many small dots near the color.   In addition, the pixels of LCD include real pixel display and virtual pixel display. The two technologies are different. The virtual display adopts virtual pixel technology, that is, LCD multiplexing technology. The same LCD light-emitting tube can be combined 4 times with adjacent LCD light-emitting tubes (down, down, left, and right combinations). Generally speaking, the pixel is a unit. The pixels of the current LCD display are 1920 * 1080, and the pixels of the Department display can be as high as 3840 * 2160. The higher the pixel, and more clearer the picture will be.

digital signage exhibition

55 inch video wall

55 inch 3.5mm narrow bezel video wall study case in Germany

Product: 55 inch 3.5mm narrow bezel DID video wall
Installation time: 2021
Area: Germany
Key features:
• 55 inch 3.5mm narrow bezel video wall

• Original DID-LCD BOE panel
• Good white balance factory setting
• 4K resolution for the whole video wall screen
• Push out bracket, convenient for maintain service
• Daisy chain and DP loop support

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