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LED LCD TV

Dongguan Kaidi Electronic Technology Co., Ltd : Your Professional LED LCD TV Manufacturer

 

Dongguan Kaidi Electronic Technology Co., Ltd is an innovative enterprise dedicated to the agency and sales of liquid crystal displays, supply chain financial management within the LCD sector, and the production and sales of televisions and monitors. Established in 2007, our core partnership factory has grown through years of development and technological advancement, becoming a frontrunner in the manufacture of televisions and monitors. With a youthful and vibrant team, the company has swiftly established a competitive edge in supply chain management, supported by a robust LED/LCD screen supply chain and factory resources. Internationally, Guangzhou Magic is actively expanding its B2B segment, providing high-quality OEM services and delivering comprehensive product support to global customers. Concurrently, the company is venturing into the B2C retail market, aiming to build a global sales network to offer customers a wider variety of choices and more efficient services.

 

Rich Product Variety
Our main products include LED LCD TV, SKD CKD TV, interactive whiteboard, TV opencell, portable monitor and other electronic equipment.

 

Competitive Price
We have a professional purchasing team and costing team, trying to reduce costs and profits, and provide you with a good price.

 

Complete Qualifications
Our products meet and exceed 20 international standards. We cooperate with international certification agencies such as CCC, CE, ROHS, UL, FCC, SAA, BV, etc. to ensure product quality.

 

Global Shipping
We cooperate with professional sea shipping, air and logistics companies to provide you with the best transportation solution.

 

Rich Experience
Our core cooperative factory was established in 2007. After years of development and technological progress, our company has rich production and manufacturing experience and has become a leader in the field of TV and display manufacturing.

 

Leading Service
We have many years of industry experience and a complete production management, quality supervision, sales service operation system. Whether you want to buy interactive whiteboard or portable monitor, just send your requirements by email and we can customize the product for you.

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Characteristics of LED LCD TV

 

1.Clear Picture Quality
LED LCD TVs achieve deeper blacks while emitting brighter images, resulting in better contrast, resolution, brightness, and clear picture quality.

 

2.Thin and Flexible Body
Compared with bulky CRT monitors, LCD monitors only take up one-third of the space.

 
03
 

Low Power Consumption

LED LCD TVs are low-power products. Due to low power consumption and low heat generation during operation, they are not affected by magnetic fields and have no geometric distortion in imaging.

 
04
 

No Radiation

LED does not use mercury like some other backlighting methods. LED LCD TVs are completely radiation-free, which is good news for people who sit in front of the TV all day.

 
05
 

Eye Protection

Unlike CRT technology, LCD screens do not flicker. So using LED LCD TVs can reduce screen damage to the eyes and prevent eye fatigue.

HDR Portable Gaming Monitor 16 Inch

 

Components of LED LCD TV

 

Display Panel
The prominent component of any TV is the display panel. The display panel is the screen of the TV that allows you to watch exciting images and videos. It consists of tiny light-emitting diodes (LEDs). Any kind of disturbance in the panel leads to dead pixels as well as uneven color and brightness.

 

Backlight
What makes the images appear in front of you is the display panel. The display panel is supported by a backlight that lights up and enhances the contrast of the visuals. Usually, two types of backlighting are used: edge-lit and direct-lit technology. The use of both ensures the efficiency and thinness of the TV.

 

Power Supply
The power supply is the real driving force that allows the TV to show what it is supposed to show. The main purpose of the power supply is to convert AC power to DC power to ensure that other LED components work properly. The power supply unit consists of many parts that collectively help to regulate the voltage in the TV. It includes a voltage regulator that ensures that all the parts of the LED receive the required and consistent supply. In addition, there are filter capacitors that filter out the noise that occurs due to the DC voltage. Due to the continuous and long hours of power supply, the power supply system gets heated. For heat dissipation the other part, the heat sink operates to ensure that the supply unit functions properly.

 

Motherboard
Behind every complex and accurate functioning of a TV or computer is the motherboard. It is called the backbone of the LED that allows all components to communicate to display good results. The motherboard controls the all-complex functions of the LED like providing a power supply to the LED. In addition, it provides space for the input and output ports to make connections to the external devices. Moreover, it allows stable and fast data transmission between the different components of the smart LED TV.

 

Processor
The processor is meant to be the brain of the LED. It manages and controls the OS and all tv applications. The efficient processor determines the quality and efficiency of the television. Along with processing all instructions and data, it also plays its role in decoding audio and video signals. In addition, it displays quality images. Furthermore, it responds to user input to display the data on the screen after processing. The high-resolution and quality TV features a standardized motherboard and processor because both are the basic driving unit of any TV.

 

Remote Control
To communicate with the TV, the remote utilizes radio frequency or infrared technology. Turning on/off the TV, shifting channels, adjusting the volume, changing the brightness, and finding the content you want to watch are all made easy for you via the remote control. In addition, you have the option to select and play media files to see on a big display. Smart TV also works via voice. You can either do both app control or voice search in that case.

 

Connection Components
With advancements in technology, you can see the media of any device on a bigger screen with convenience. The prominent connectivity ports are HDMI and USB ports. HDMI (high-definition multimedia interface) is commonly used to transmit audio and video signals via a single cable. It is used to connect devices to LED, multimedia, or computer. Via this connectivity, you can watch high-quality videos and audio on the big screen. USB is the standardized interface that is used to transfer data from a variety of devices. You can play the media on a flash drive through a USB port.

 

Audio Output
How superior the display is, if the TV has a poor audio system then all crisp the display is meaningless. The LED LCD TV comes with superb audio output that allows the connection with sound bars or speakers. By using the audio output, you can enjoy the mesmerizing and high bass sound along with quality visuals. Via the external sound system, you can enjoy clearer sound than the built-in LED speakers can.

 

How Is a LED LCD TV Made
 

Raw Material Preparation

First, the company needs to purchase and prepare raw materials such as LCD panels, shell plastic parts, circuit boards, and protective films. Raw material preparation requires the inspection of various purchased raw materials and their classification for subsequent assembly line calls to ensure assembly quality.

LCD Panel Assembly

Secondly, we need to assemble the LCD panel into the back shell, connect the cable, backlight, etc. After the assembly is completed, a visual inspection is performed to ensure that the panel has no displacement, the wiring is neat, and there is no looseness.

Motherboard Assembly

Then, we install various electronic components on the circuit board, such as the main control chip, power board, etc. The motherboard assembly requires precise control of each step, because the performance of the motherboard directly affects the picture quality and sound effects of the LCD TV.

Functional Test

Next, we need to perform functional tests on the assembled circuit boards to detect images, sounds, etc. Functional testing ensures that the performance of the TV meets the design specifications and user requirements. Unqualified products will be reworked, repaired, and adjusted before testing.

Shell Assembly

Then, we install the tested circuit board into the front shell and connect the components and interfaces. The quality of shell assembly directly affects the appearance and service life of the product, and careful assembly is required to ensure the reliability of the interface connection.

Packaging and Shipping

Finally, the qualified products are cleaned, packaged, and labeled before being shipped to the shipping area. The packaging and shipping stage completes the packaging and transportation of finished products, which is an important link between manufacturing and sales.

 

Maintenance of LED LCD TV

 

 

Dusting and Cleaning
Regular dusting and cleaning are essential for LED LCD TV maintaining the optimal performance of your LED TV. Dust accumulation can affect the image quality and overall functionality of the TV. Use a soft, lint-free cloth to gently wipe the screen, bezel, and other external surfaces of the TV. Avoid using harsh chemicals or abrasive materials that may damage the screen or leave scratches.

 

Proper Ventilation
LED LCD TVs generate heat during operation, and it is crucial to ensure proper ventilation to prevent overheating. Make sure that the vents on the back of the TV are not blocked by objects or walls. Allow sufficient space around the TV for proper airflow. This will help in dissipating heat and prevent potential damage to internal components.

 

Adjusting Brightness and Contrast
Excessive brightness and contrast levels can lead to accelerated wear and tear of the LED panel. Adjust the brightness and contrast settings to optimal levels based on the lighting conditions in your viewing environment. By avoiding extreme settings, you can reduce the strain on the LED panel and prolong its lifespan.

 

Avoiding Image Retention
Image retention, also known as screen burn-in, occurs when a static image is displayed on the screen for an extended period, leading to a permanent residual image. To prevent image retention, avoid keeping static images on the screen for long durations. If you need to pause the TV or leave it on a particular screen, activate the screen saver or turn off the TV when not in use.

 

Safe Transportation and Handling
If you need to move or transport your LED LCD TVS ensure that it is handled with care. Use the original packaging or a sturdy box to protect the TV during transit. Avoid placing heavy objects on top of the TV or applying excessive pressure on the screen, as this can cause irreversible damage.

 

 
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Frequently Asked Questions
 

Q: What is LED LCD TV?

A: LED LCD TV is a type of LCD television that uses light-emitting diodes (LEDs) to backlight the display instead of the cold cathode fluorescent lights (CCFLs) used in standard LCD televisions.

Q: What is the manufacturing process of LED LCD TV?

A: The LED LCD TV production line is a complex assembly process involving precision assembly in multiple links. In the raw material preparation stage, the factory needs to purchase core components such as LCD panels, casings, and circuit boards, and conduct warehousing inspections. The assembly of the LCD panel is a key step. It requires first installing the backlight, accurately assembling the panel and connecting the cables. Motherboard assembly requires the installation of various electronic components on the circuit board, such as signal processing chips, power supplies, etc. After assembly, the LCD TV also needs to undergo comprehensive functional testing to check image, sound and other effects. After passing the test, it enters the packaging and shipping process. Unqualified products need to be reworked and repaired. Every step of the entire production line must be strictly controlled to ensure the speed and efficiency of the assembly line and the high reliability of the product.

Q: What should be paid attention to when purchasing raw materials for LED LCD TVs?

A: The LCD panel is the core component of LCD TVs. Factories will purchase LCD panels of different sizes and resolutions according to the model. It is necessary to check whether the panel is damaged and whether the pixels are bright. The TV shell is generally made of plastic injection molding, including the front shell and the back shell. It is necessary to check whether the plastic shell has cracks, missing corners, and spray color problems. The main control circuit board has signal processing chips, power management chips, etc. It is necessary to check whether the circuit board has short circuits, welding leaks, missing parts, etc. Packaging materials such as fluffy cotton, environmentally friendly packaging bags, cartons, etc. need to be checked to see if they meet the size and are not damaged.

Q: How to assemble the LCD panel of LED LCD TV?

A: The assembly of LCD panel includes the following steps. First, the backlight needs to be installed. The LED light bar is installed in the appropriate position inside the back shell and fixed. Secondly, optical films such as diffusion film and brightness enhancement film are attached to the backlight to make the light uniform and improve the display effect. After that, the tested LCD panel is carefully placed in the back shell and accurately aligned with the backlight position. The assembly is usually completed using a robotic arm. Next, the flat cable connection uses a flat cable to connect the connection terminals on the LCD panel to the backlight and circuit board. The cables should be arranged neatly and the connection should be firm. Finally, the LCD panel is fixed to the back shell with special screws, which should not be too loose or too tight.

Q: What steps are involved in the mainboard assembly of LED LCD TVs?

A: The first step is SMT assembly. We use surface mount technology to install various electronic components such as resistors, capacitors, chips, etc. on the main control circuit board. The second step is plug-in assembly. We use plug-in technology to install some larger components such as power interfaces, switches, connectors, etc. The third step is dispensing. We need to dispense glue at certain locations on the circuit board to fix specific components. The fourth step is component assembly. We need to manually assemble some components such as power management chips, audio processing chips, etc. to designated locations. The fifth step is to use a soldering station to solder the chip to the gold fingers on the circuit board and connect the wires. Finally, we conduct inspection and testing, mainly optical inspection and electrical performance testing of the assembled motherboard.

Q: What specific tests are required for functional testing of LED LCD TV?

A: Power-on test: Connect the power supply and check whether the LCD TV can be turned on normally. Image test: Check whether the display screen has debris, dirty spots, scratches and other problems, and whether the display color, contrast, brightness, resolution and other parameters are up to standard. Sound test: Use the audio signal source to check the volume, sound quality, left and right channel balance, etc. Key test: Check whether each key function is normal, such as channel, volume, menu keys, etc. Interface test: Check the connection and signal transmission function of USB, HD, earphone, and other interfaces.

Q: Is the shell assembly process of LED LCD TV complicated?

A: The shell assembly process of LED LCD TV is relatively complicated. First, we need to carefully place the assembled main control circuit board into the back shell of the LCD TV. Secondly, we align the assembled LCD panel components and place them into the back shell to connect them firmly. Next, we need to place the front shell on the back shell, integrate the component positions, and tighten the front and back shells with screws. In addition, we also need to connect the speakers, control buttons and other components to the corresponding interfaces on the front shell, and use connecting wires to connect the interfaces on the mainboard to the speakers, control board, power board, etc.

Q: What preparations should be made before LED LCD TV is packaged and shipped?

A: Cleaning the TV: Use special tools and materials to clean the outer shell of the assembled LCD TV to remove fingerprints, dust, etc. Film and labeling: Put a protective film on the TV and label it with name, specifications, barcode and other labels. Packing boxes: Put the qualified LCD TVs into pre-packed cartons or plastic packaging boxes. Marking on the box: Put a mark on the box to indicate the brand, model, quantity and other information. Warehousing and loading: Put the packaged products into containers in the designated warehouse area for temporary storage.

Q: Why do LCD TVs use LEDs as backlight sources instead of CCFL technology (cold cathode fluorescent lamps)?

A: All LCD TVs are backlit because LCDs are a transmissive type of display technology, which means they don't produce their own light. For an LCD television to produce an image on the flat panel display, its pixels have to be backlit by a separate lighting source. Currently, most LCD TVs used CCFL technology (cold cathode fluorescent lamps) as their backlight source. They deliver good colors and brightness, and decent contrast, but not great blacks. But TVs utilizing brighter LED backlighting can achieve much better blacks, as well as brighter colors and even greater contrast ratios.

Q: What are the characteristics of LED LCD TVs?

A: First, LED LCD TVs can produce deeper blacks and brighter images, resulting in better contrast. Second, they offer better viewing angles than other LCD TVs and have a long lifespan. Finally, LEDs are more energy-efficient than CCFL TVs.

Q: What is the life of LED LCD TV?

A: LED LCD TVs have the longest life span (11-16 years) with low brightness settings applied. Plasma TVs last only 5-7 years, while LCD screens last 5-10 years. Keep your new TV longer using its Energy Saving mode and a surge protector.

Q: How does a LED LCD TV work?

A: An LED LCD TV works by using a backlight to illuminate an LCD panel, which creates the image. LED TVs, or Light Emitting Diode TVs, are a type of LCD TV that use LED backlighting to create the image.

Q: What are the advantages of LED LCD TV?

A: The main advantages of LED LCD TV are low cost, energy saving and extremely low power consumption. It is lighter, thinner and more flexible. LCD TV offers excellent resolution, brightness and contrast, so the picture quality is clear. LCD monitors also emit much less radiation than CRT monitors. Due to the low power consumption of LCD TV, it generates less heat when it is running.

Q: What are the basics of LED TV?

A: LED TV is a type of LCD television that uses light-emitting diodes (LEDs) to backlight the display instead of the cold cathode fluorescent lights (CCFLs) used in standard LCD televisions. LED TVs are more formally known as LED-backlight LCD television.

Q: Can a TV have both LED and LCD?

A: All LED TVs have an LCD panel, and technically, LED TVs can be called “LED-lit LCD TVs,” but they are not commonly referred to as such. Even though LED TVs are a subset of LCD TVs, the distinction between both is still noted in electronics catalogs today.

Q: How long can a LED LCD TV be left on?

A: For instance, some TVs are built to last for around 60,000 hours of total watch time. The longer you leave the TV on, the quicker this total lifespan will count down! If you're still watching the TV while it's on, then it's generally not too much of a problem to leave it on.

Q: What precautions should be taken when using LED LCD TV?

A: LED LCD TVs, smartphones and computers all increase the risk of digital eye strain if we don't take proper precautions. Try to look away from the screen and gaze out the window for a few minutes during commercial breaks. This lets your eyes relax from the fixed screen stare and recover.

Q: What is the most common problem with an LED LCD TV?

A: You are most likely dealing with a power supply failure inside the TV, assuming there are no signal problems with the devices connected to your TV. Power surges that impact your TV and harm components like capacitors are the main cause of power supply problems.

Q: What can damage an LED LCD TV?

A: Some common things can cause physical damage to an LED LCD TV. For example, pressing with your fingers when trying to move or turn the TV. Or spraying liquid cleaner on the screen, which may seep between the layers of the screen.

Q: How do I protect my LED LCD TV from moisture?

A: The first tip on how to protect your LED display from humidity is to install air conditioning units and dehumidifiers. During moist and rainy seasons, air conditioning and reliable dehumidifiers are used to dehumidify the indoor and the LED display area.

As one of the leading led lcd tv manufacturers and suppliers in China, we warmly welcome you to wholesale led lcd tv for sale here from our factory. All customized products are with high quality and competitive price. Contact us for pricelist.

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