assembly code for lcd display made in china

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The items are television subassemblies referred to as a Liquid Crystal Display (LCD) Module/Panel and a Box Module. Both are subassemblies for a Sony flat panel television. Your letter states that they will be used for television assembly and repair processes. The LCD Module/Panel will be imported from China and the Box Module will be imported from Malaysia. The products will be imported separately from each other, in different shipments and with separate invoicing.

The LCD Module/Panel is composed of the LCD panel, which is an active matrix type 42.0 inch diagonal color TFT (thin film transistor) LCD with 1920 by 1080 pixels, and the drive electronics circuitry, the backlight unit, and the aluminum bezel and upper plastic rear cover. In its condition as imported, it is called the LCD Module or the LCD Panel Assembly.

The LCD Module will not be capable of receiving or processing a broadcast television signal or other types of video or audio signals because it lacks a tuner. The tuner as well as the video and audio signal receiving and processing boards are in the Box Module.

The LCD Module requires two power inputs, one to power the LCD electronics and to drive the TFT array and liquid crystal in the LCD Panel. The other is to power the back light unit. In its condition as imported, the LCD Module does not contain a power supply.

The Box Module consists of printed circuit boards for the reception and processing of the television, video and data signals; and the main board, which includes the video processing and amplification systems, the tuner, and the audio detection and amplification functions. In addition, it contains the televisions cosmetic lower rear cover, brackets, and the sound speakers. Furthermore, it has a side panel made up of a printed circuit board assembly with control buttons for the power, volume, channels, and input selector. It also includes the connectors that receive analog NTSC, digital ATSC, video NTSC, component, HDMI, and MHL signals. This Box Module does not contain a power supply or a screen.

In your request, you express the opinion that the Box Module is properly classified under the subheading 8529.90.0300, HTSUS, which provides for Parts suitable for use solely or principally with the apparatus of headings 8525 to 8528: Other: Printed circuit assemblies: Of television apparatus: Printed circuit boards and ceramic substrates with components assembled thereon, for color television receivers; subassemblies containing one or more of such boards or substrates, except tuners or convergence assemblies: Entered with components enumerated in additional U.S. note 4 to this chapter. However, the Box Module is beyond the scope of printed circuit boards and ceramic substrates. Therefore, this office believes that this Box Module is more specifically classified as other parts of television receivers consisting of subassemblies for color television receivers, containing two or more printed circuit boards (8529.90.8800, HTSUS).

The applicable subheading for the LCD Module/Panel will be 9013.80.9000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Liquid crystal devices not constituting articles provided for more specifically in other headings; Other. The rate of duty will be 4.5 percent ad valorem.

The applicable subheading for the Box Module will be 8529.90.8800, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Parts suitable for use solely or principally with the apparatus of headings 8525 to 8528: Other: Of television receivers: Subassemblies, for color television receivers, containing two or more printed circuit boards or ceramic substrates with components assembled thereon, except tuners or convergence assemblies: Entered with components enumerated in additional U.S. note 4 to this chapter. The rate of duty will be 4 percent ad valorem.

Duty rates are provided for your convenience and are subject to change. The text of the most recent HTSUS and the accompanying duty rates are provided on World Wide Web at http://www.usitc.gov/tata/hts/.

Important technical improvements of LCD, such as LED backlighting and wide viewing Angle, are directly related to LCD. And account for an LCD display 80% of the cost of the LCD panel, enough to show that the LCD panel is the core part of the entire display, the quality of the LCD panel, can be said to directly determine the quality of an LCD display.

The production of civil LCD displays is just an assembly process. The LCD panel, the main control circuit, shell, and other parts of the main assembly, basically will not have too complex technical problems.

Does this mean that LCDS are low-tech products? In fact, it is not. The production and manufacturing process of the LCD panels is very complicated, requiring at least 300 process processes. The whole process needs to be carried out in a dust-free environment and with precise technology.

The general structure of the LCD panel is not very complex, now the structure of the LCD panel is divided into two parts: the LCD panel and the backlight system.

Due to the LCD does not shine, so you need to use another light source to illuminate, the function of the backlight system is to this, but currently used CCFL lamp or LED backlight, don’t have the characteristics of the surface light source, so you need to guide plate, spreadsheet components, such as linear or point sources of light evenly across the surface, in order to make the entire LCD panel on the differences of luminous intensity is the same, but it is very difficult, to achieve the ideal state can be to try to reduce brightness non-uniformity, the backlight system has a lot to the test of design and workmanship.

In addition, there is a driving IC and printed circuit board beside the LCD panel, which is mainly used to control the rotation of LCD molecules in the LCD panel and the transmission of display signals. The LCD plate is thin and translucent without electricity. It is roughly shaped like a sandwich, with an LCD sandwiched between a layer of TFT glass and a layer of colored filters.

LCD with light refraction properties of solid crystals, with fluid flow characteristics at the same time, under the drive of the electrode, can be arranged in a way that, in accordance with the master want to control the strength of the light through, and then on the color filter, through the red, green, blue three colors of each pixel toning, eventually get the full-screen image.

According to the functional division, the LCD panel can be divided into the LCD panel and the backlight system. However, to produce an LCD panel, it needs to go through three complicated processes, namely, the manufacturing process of the front segment Array,the manufacturing process of the middle segment Cell, and the assembly of the rear segment module. Today we will be here, for you in detail to introduce the production of the LCD panel manufacturing process.

The manufacturing process of the LCD panel Array is mainly composed of four parts: film, yellow light, etch and peel film. If we just look at it in this way, many netizens do not understand the specific meaning of these four steps and why they do so.

First of all, the motion and arrangement of LCD molecules need electrons to drive them. Therefore, on the TFT glass, the carrier of LCD, there must be conductive parts to control the motion of LCD. In this case, we use ITO (Indium Tin Oxide) to do this.ITO is transparent and also acts as a thin-film conductive crystal so that it doesn’t block the backlight.

The different arrangement of LCD molecules and the rapid motion change can ensure that each pixel displays the corresponding color accurately and the image changes accurately and quickly, which requires the precision of LCD molecule control.ITO film needs special treatment, just like printing the circuit on the PCB board, drawing the conductive circuit on the whole LCD board.

First, the ITO film layer needs to be deposited on the TFT glass, so that there is a smooth and uniform ITO film on the whole TFT glass. Then, using ionized water, the ITO glass is cleaned and ready for the next step.

Next, a photoresist is applied to the glass on which ITO film is deposited, and a uniform photoresist layer is formed on the ITO glass. After baking for a period of time, the solvent of the photoresist was partially volatilized to increase the adhesion of the photoresist material to the ITO glass.

Stripping: High concentration of alkali solution (NaOH solution) is used as a stripping solution to peel off the remaining photoresist on the glass so that ITO glass can form ITO graphics exactly consistent with the photolithography mask.

Rinse the basic label of glass with an organic solution and remove the photolithographic tape after reaction to keep the glass clean. This completes the first thin-film conductive crystal process, which generally requires at least five identical processes to form a complex and sophisticated pattern of electrodes on the glass.

This completes the previous Array process. It is not difficult to see from the whole process that ITO film is deposited, photoresist coated, exposed, developed, and etched on TFT glass, and finally, ITO electrode pattern designed in the early stage is formed on TFT glass to control the movement of LCD molecules on the glass. The general steps of the whole production process are not complicated, but the technical details and precautions are very complicated, so we will not introduce them here. Interested friends can consult relevant materials by themselves.

The glass that the LCD board uses makes a craft also very exquisite. (The manufacturing process flow of the LCD display screen)At present, the world’s largest LCD panel glass, mainly by the United States Corning, Japan Asahi glass manufacturers, located in the upstream of the production of LCD panel, these manufacturers have mastered the glass production technology patents. A few months ago, the earthquake caused a corning glass furnace shutdown incident, which has caused a certain impact on the LCD panel industry, you can see its position in the industry.

As mentioned earlier, the LCD panel is structured like a sandwich, with an LCD sandwiched between the lower TFT glass and the upper color filter. The terminal Cell process in LCD panel manufacturing involves the TFT glass being glued to the top and bottom of a colored filter, but this is not a simple bonding process that requires a lot of technical detail.

As you can see from the figure above, the glass is divided into 6 pieces of the same size. In other words, the LCD made from this glass is finally cut into 6 pieces, and the size of each piece is the final size. When the glass is cast, the specifications and sizes of each glass have been designed in advance.

Then, the organic polymer directional material is coated on the surface of the glass, that is, a uniform directional layer is applied to the appropriate position of ITO glass by the method of selective coating. Meanwhile, the directional layer is cured.

Directional friction:Flannelette material is used to rub the surface of the layer in a specific direction so that the LCD molecules can be arranged along the friction direction of the aligned layer in the future to ensure the consistency of the arrangement of LCD molecules. After the alignment friction, there will be some contaminants such as flannelette thread, which need to be washed away through a special cleaning process.

After the TFT glass substrate is cleaned, a sealant coating is applied to allow the TFT glass substrate to be bonded to the color filter and to prevent LCD outflow.

Finally, the conductive adhesive is applied to the frame in the bonding direction of the glass of the color filter to ensure that external electrons can flow into the LCD layer. Then, according to the bonding mark on the TFT glass substrate and the color filter, two pieces of glass are bonded together, and the bonding material is solidified at high temperatures to make the upper and lower glasses fit statically.

Color filters are very important components of LCD panels. Manufacturers of color filters, like glass substrate manufacturers, are upstream of LCD panel manufacturers. Their oversupply or undersupply can directly affect the production schedule of LCD panels and indirectly affect the end market.

As can be seen from the above figure, each LCD panel is left with two edges after cutting. What is it used for? You can find the answer in the later module process

Finally, a polarizer is placed on both sides of each LCD substrate, with the horizontal polarizer facing outwards and the vertical polarizer facing inwards.

When making LCD panel, must up and down each use one, and presents the alternating direction, when has the electric field and does not have the electric field, causes the light to produce the phase difference and to present the light and dark state, uses in the display subtitle or the pattern.

The rear Module manufacturing process is mainly the integration of the drive IC pressing of the LCD substrate and the printed circuit board. This part can transmit the display signal received from the main control circuit to the drive IC to drive the LCD molecules to rotate and display the image. In addition, the backlight part will be integrated with the LCD substrate at this stage, and the complete LCD panel is completed.

Firstly, the heteroconductive adhesive is pressed on the two edges, which allows external electrons to enter the LCD substrate layer and acts as a bridge for electronic transmission

Next is the drive IC press. The main function of the drive IC is to output the required voltage to each pixel and control the degree of torsion of the LCD molecules. The drive IC is divided into two types. The source drive IC located in the X-axis is responsible for the input of data. It is characterized by high frequency and has an image function. The gate drive IC located in the Y-axis is responsible for the degree and speed of torsion of LCD molecules, which directly affects the response time of the LCD display. However, there are already many LCD panels that only have driving IC in the X-axis direction, perhaps because the Y-axis drive IC function has been integrated and simplified.

The press of the flexible circuit board can transmit data signals and act as the bridge between the external printed circuit and LCD. It can be bent and thus becomes a flexible or flexible circuit board

The manufacturing process of the LCD substrate still has a lot of details and matters needing attention, for example, rinse with clean, dry, dry, dry, ultrasonic cleaning, exposure, development and so on and so on, all have very strict technical details and requirements, so as to produce qualified eyes panel, interested friends can consult relevant technical information by a search engine.

LCD (LC) is a kind of LCD, which has the properties of light transmission and refraction of solid Crystal, as well as the flow property of Liquid. It is because of this property that it will be applied to the display field.

However, LCD does not emit light autonomously, so the display equipment using LCD as the display medium needs to be equipped with another backlight system.

First, a backplate is needed as the carrier of the light source. The common light source for LCD display equipment is CCFL cold cathode backlight, but it has started to switch to an LED backlight, but either one needs a backplate as the carrier.

CCFL backlight has been with LCD for a long time. Compared with LED backlight, CCFL backlight has many defects. However, it has gradually evolved to save 50% of the lamp and enhance the transmittance of the LCD panel, so as to achieve the purpose of energy-saving.

With the rapid development of LED in the field of lighting, the cost has been greatly reduced.LCD panels have also started to use LED as the backlight on a large scale. Currently, in order to control costs, an LED backlight is placed on the side rather than on the backplate, which can reduce the number of LED grains.

However, no matter CCFL backlight or LED backlight is placed in various ways, the nature of the backlight source cannot be a surface light source, but a linear light source or point light source. Therefore, other components are needed to evenly distribute the light to the whole surface. This task is accomplished by the diffuser plate and diffuser plate.

On the transparent diffuser plate, point-like printing can block part of the light. The LED backlight on the side drives the light from the side of the diffuser plate, and the light reflects and refracts back and forth in the diffuser plate, distributing the light evenly to the whole surface. Point-like printing blocks part of the light, screening the light evenly like a sieve.

At the top of the diffusion plate, there will be 3~4 diffuser pieces, constantly uniform light to the whole surface, improve the uniformity of light, which is directly related to the LCD panel display effect. Professional LCD in order to better control the brightness uniformity of the screen, panel procurement, the later backlight control circuit, will make great efforts to ensure the quality of the panel.

The backlight system also includes a backlight module laminator, located behind the backplane. In the CCFL backlight era, you can often see the long strip laminator like the one above, with each coil responsible for a set of tubes.

Since the LCD substrate and the backlight system are not fixed by bonding, a metal or rubber frame is needed to be added to the outer layer to fix the LCD substrate and the backlight system.

After the period of the Module, the process is completed in LCM (LCDModule) factory, the core of this part of the basic does not involve the use of LCD manufacturing technology, mainly is some assembly work, so some machine panel factories such as chi mei, Korea department such as Samsung panel factory, all set with LCM factories in mainland China, Duan Mo group after the LCD panel assembly, so that we can convenient mainland area each big monitor procurement contract with LCD TV manufacturers, can reduce the human in the whole manufacturing and transportation costs.

However, neither Taiwan nor Korea has any intention to set up factories in mainland China for the LCD panel front and middle manufacturing process involving core technologies. Therefore, there is still a long way to go for China to have its own LCD panel industry.

If your phone has image display issues, an unresponsive touch screen or physical cracks or scratches on the glass, this assembly part is what you need

This is not an easy job for someone who has no technical skills with Disassembling or Assembling cellphones/mobile phones, so only purchase this item if you know how to install it

Highly recommend professional installation. We will not be held responsible for any damages to your cellphone/mobile phone that you may cause during the changing of replacement parts

Important technical improvements of LCD, such as LED backlighting and wide viewing Angle, are directly related to LCD. And account for an LCD display 80% of the cost of the LCD panel, enough to show that the LCD panel is the core part of the entire display, the quality of the LCD panel, can be said to directly determine the quality of an LCD display.

The production of civil LCD displays is just an assembly process. The LCD panel, the main control circuit, shell, and other parts of the main assembly, basically will not have too complex technical problems.

Does this mean that LCDS are low-tech products? In fact, it is not. The production and manufacturing process of the LCD panels is very complicated, requiring at least 300 process processes. The whole process needs to be carried out in a dust-free environment and with precise technology.

The general structure of the LCD panel is not very complex, now the structure of the LCD panel is divided into two parts: the LCD panel and the backlight system.

Due to the LCD does not shine, so you need to use another light source to illuminate, the function of the backlight system is to this, but currently used CCFL lamp or LED backlight, don’t have the characteristics of the surface light source, so you need to guide plate, spreadsheet components, such as linear or point sources of light evenly across the surface, in order to make the entire LCD panel on the differences of luminous intensity is the same, but it is very difficult, to achieve the ideal state can be to try to reduce brightness non-uniformity, the backlight system has a lot to the test of design and workmanship.

In addition, there is a driving IC and printed circuit board beside the LCD panel, which is mainly used to control the rotation of LCD molecules in the LCD panel and the transmission of display signals. The LCD plate is thin and translucent without electricity. It is roughly shaped like a sandwich, with an LCD sandwiched between a layer of TFT glass and a layer of colored filters.

LCD with light refraction properties of solid crystals, with fluid flow characteristics at the same time, under the drive of the electrode, can be arranged in a way that, in accordance with the master want to control the strength of the light through, and then on the color filter, through the red, green, blue three colors of each pixel toning, eventually get the full-screen image.

According to the functional division, the LCD panel can be divided into the LCD panel and the backlight system. However, to produce an LCD panel, it needs to go through three complicated processes, namely, the manufacturing process of the front segment Array,the manufacturing process of the middle segment Cell, and the assembly of the rear segment module. Today we will be here, for you in detail to introduce the production of the LCD panel manufacturing process.

The manufacturing process of the LCD panel Array is mainly composed of four parts: film, yellow light, etch and peel film. If we just look at it in this way, many netizens do not understand the specific meaning of these four steps and why they do so.

First of all, the motion and arrangement of LCD molecules need electrons to drive them. Therefore, on the TFT glass, the carrier of LCD, there must be conductive parts to control the motion of LCD. In this case, we use ITO (Indium Tin Oxide) to do this.ITO is transparent and also acts as a thin-film conductive crystal so that it doesn’t block the backlight.

The different arrangement of LCD molecules and the rapid motion change can ensure that each pixel displays the corresponding color accurately and the image changes accurately and quickly, which requires the precision of LCD molecule control.ITO film needs special treatment, just like printing the circuit on the PCB board, drawing the conductive circuit on the whole LCD board.

First, the ITO film layer needs to be deposited on the TFT glass, so that there is a smooth and uniform ITO film on the whole TFT glass. Then, using ionized water, the ITO glass is cleaned and ready for the next step.

Next, a photoresist is applied to the glass on which ITO film is deposited, and a uniform photoresist layer is formed on the ITO glass. After baking for a period of time, the solvent of the photoresist was partially volatilized to increase the adhesion of the photoresist material to the ITO glass.

Stripping: High concentration of alkali solution (NaOH solution) is used as a stripping solution to peel off the remaining photoresist on the glass so that ITO glass can form ITO graphics exactly consistent with the photolithography mask.

Rinse the basic label of glass with an organic solution and remove the photolithographic tape after reaction to keep the glass clean. This completes the first thin-film conductive crystal process, which generally requires at least five identical processes to form a complex and sophisticated pattern of electrodes on the glass.

This completes the previous Array process. It is not difficult to see from the whole process that ITO film is deposited, photoresist coated, exposed, developed, and etched on TFT glass, and finally, ITO electrode pattern designed in the early stage is formed on TFT glass to control the movement of LCD molecules on the glass. The general steps of the whole production process are not complicated, but the technical details and precautions are very complicated, so we will not introduce them here. Interested friends can consult relevant materials by themselves.

The glass that the LCD board uses makes a craft also very exquisite. (The manufacturing process flow of the LCD display screen)At present, the world’s largest LCD panel glass, mainly by the United States Corning, Japan Asahi glass manufacturers, located in the upstream of the production of LCD panel, these manufacturers have mastered the glass production technology patents. A few months ago, the earthquake caused a corning glass furnace shutdown incident, which has caused a certain impact on the LCD panel industry, you can see its position in the industry.

As mentioned earlier, the LCD panel is structured like a sandwich, with an LCD sandwiched between the lower TFT glass and the upper color filter. The terminal Cell process in LCD panel manufacturing involves the TFT glass being glued to the top and bottom of a colored filter, but this is not a simple bonding process that requires a lot of technical detail.

As you can see from the figure above, the glass is divided into 6 pieces of the same size. In other words, the LCD made from this glass is finally cut into 6 pieces, and the size of each piece is the final size. When the glass is cast, the specifications and sizes of each glass have been designed in advance.

Then, the organic polymer directional material is coated on the surface of the glass, that is, a uniform directional layer is applied to the appropriate position of ITO glass by the method of selective coating. Meanwhile, the directional layer is cured.

Directional friction:Flannelette material is used to rub the surface of the layer in a specific direction so that the LCD molecules can be arranged along the friction direction of the aligned layer in the future to ensure the consistency of the arrangement of LCD molecules. After the alignment friction, there will be some contaminants such as flannelette thread, which need to be washed away through a special cleaning process.

After the TFT glass substrate is cleaned, a sealant coating is applied to allow the TFT glass substrate to be bonded to the color filter and to prevent LCD outflow.

Finally, the conductive adhesive is applied to the frame in the bonding direction of the glass of the color filter to ensure that external electrons can flow into the LCD layer. Then, according to the bonding mark on the TFT glass substrate and the color filter, two pieces of glass are bonded together, and the bonding material is solidified at high temperatures to make the upper and lower glasses fit statically.

Color filters are very important components of LCD panels. Manufacturers of color filters, like glass substrate manufacturers, are upstream of LCD panel manufacturers. Their oversupply or undersupply can directly affect the production schedule of LCD panels and indirectly affect the end market.

As can be seen from the above figure, each LCD panel is left with two edges after cutting. What is it used for? You can find the answer in the later module process

Finally, a polarizer is placed on both sides of each LCD substrate, with the horizontal polarizer facing outwards and the vertical polarizer facing inwards.

When making LCD panel, must up and down each use one, and presents the alternating direction, when has the electric field and does not have the electric field, causes the light to produce the phase difference and to present the light and dark state, uses in the display subtitle or the pattern.

The rear Module manufacturing process is mainly the integration of the drive IC pressing of the LCD substrate and the printed circuit board. This part can transmit the display signal received from the main control circuit to the drive IC to drive the LCD molecules to rotate and display the image. In addition, the backlight part will be integrated with the LCD substrate at this stage, and the complete LCD panel is completed.

Firstly, the heteroconductive adhesive is pressed on the two edges, which allows external electrons to enter the LCD substrate layer and acts as a bridge for electronic transmission

Next is the drive IC press. The main function of the drive IC is to output the required voltage to each pixel and control the degree of torsion of the LCD molecules. The drive IC is divided into two types. The source drive IC located in the X-axis is responsible for the input of data. It is characterized by high frequency and has an image function. The gate drive IC located in the Y-axis is responsible for the degree and speed of torsion of LCD molecules, which directly affects the response time of the LCD display. However, there are already many LCD panels that only have driving IC in the X-axis direction, perhaps because the Y-axis drive IC function has been integrated and simplified.

The press of the flexible circuit board can transmit data signals and act as the bridge between the external printed circuit and LCD. It can be bent and thus becomes a flexible or flexible circuit board

The manufacturing process of the LCD substrate still has a lot of details and matters needing attention, for example, rinse with clean, dry, dry, dry, ultrasonic cleaning, exposure, development and so on and so on, all have very strict technical details and requirements, so as to produce qualified eyes panel, interested friends can consult relevant technical information by a search engine.

LCD (LC) is a kind of LCD, which has the properties of light transmission and refraction of solid Crystal, as well as the flow property of Liquid. It is because of this property that it will be applied to the display field.

However, LCD does not emit light autonomously, so the display equipment using LCD as the display medium needs to be equipped with another backlight system.

First, a backplate is needed as the carrier of the light source. The common light source for LCD display equipment is CCFL cold cathode backlight, but it has started to switch to an LED backlight, but either one needs a backplate as the carrier.

CCFL backlight has been with LCD for a long time. Compared with LED backlight, CCFL backlight has many defects. However, it has gradually evolved to save 50% of the lamp and enhance the transmittance of the LCD panel, so as to achieve the purpose of energy-saving.

With the rapid development of LED in the field of lighting, the cost has been greatly reduced.LCD panels have also started to use LED as the backlight on a large scale. Currently, in order to control costs, an LED backlight is placed on the side rather than on the backplate, which can reduce the number of LED grains.

However, no matter CCFL backlight or LED backlight is placed in various ways, the nature of the backlight source cannot be a surface light source, but a linear light source or point light source. Therefore, other components are needed to evenly distribute the light to the whole surface. This task is accomplished by the diffuser plate and diffuser plate.

On the transparent diffuser plate, point-like printing can block part of the light. The LED backlight on the side drives the light from the side of the diffuser plate, and the light reflects and refracts back and forth in the diffuser plate, distributing the light evenly to the whole surface. Point-like printing blocks part of the light, screening the light evenly like a sieve.

At the top of the diffusion plate, there will be 3~4 diffuser pieces, constantly uniform light to the whole surface, improve the uniformity of light, which is directly related to the LCD panel display effect. Professional LCD in order to better control the brightness uniformity of the screen, panel procurement, the later backlight control circuit, will make great efforts to ensure the quality of the panel.

The backlight system also includes a backlight module laminator, located behind the backplane. In the CCFL backlight era, you can often see the long strip laminator like the one above, with each coil responsible for a set of tubes.

Since the LCD substrate and the backlight system are not fixed by bonding, a metal or rubber frame is needed to be added to the outer layer to fix the LCD substrate and the backlight system.

After the period of the Module, the process is completed in LCM (LCDModule) factory, the core of this part of the basic does not involve the use of LCD manufacturing technology, mainly is some assembly work, so some machine panel factories such as chi mei, Korea department such as Samsung panel factory, all set with LCM factories in mainland China, Duan Mo group after the LCD panel assembly, so that we can convenient mainland area each big monitor procurement contract with LCD TV manufacturers, can reduce the human in the whole manufacturing and transportation costs.

However, neither Taiwan nor Korea has any intention to set up factories in mainland China for the LCD panel front and middle manufacturing process involving core technologies. Therefore, there is still a long way to go for China to have its own LCD panel industry.

The items are television subassemblies referred to as a Liquid Crystal Display (LCD) Module/Panel and a Box Module. Both are subassemblies for a Sony flat panel television. Your letter states that they will be used for television assembly and repair processes. The LCD Module/Panel will be imported from China and the Box Module will be imported from Malaysia. The products will be imported separately from each other, in different shipments and with separate invoicing.

The LCD Module/Panel is composed of the LCD panel, which is an active matrix type 42.0 inch diagonal color TFT (thin film transistor) LCD with 1920 by 1080 pixels, and the drive electronics circuitry, the backlight unit, and the aluminum bezel and upper plastic rear cover. In its condition as imported, it is called the LCD Module or the LCD Panel Assembly.

The LCD Module will not be capable of receiving or processing a broadcast television signal or other types of video or audio signals because it lacks a tuner. The tuner as well as the video and audio signal receiving and processing boards are in the Box Module.

The LCD Module requires two power inputs, one to power the LCD electronics and to drive the TFT array and liquid crystal in the LCD Panel. The other is to power the back light unit. In its condition as imported, the LCD Module does not contain a power supply.

The Box Module consists of printed circuit boards for the reception and processing of the television, video and data signals; and the main board, which includes the video processing and amplification systems, the tuner, and the audio detection and amplification functions. In addition, it contains the televisions cosmetic lower rear cover, brackets, and the sound speakers. Furthermore, it has a side panel made up of a printed circuit board assembly with control buttons for the power, volume, channels, and input selector. It also includes the connectors that receive analog NTSC, digital ATSC, video NTSC, component, HDMI, and MHL signals. This Box Module does not contain a power supply or a screen.

In your request, you express the opinion that the Box Module is properly classified under the subheading 8529.90.0300, HTSUS, which provides for Parts suitable for use solely or principally with the apparatus of headings 8525 to 8528: Other: Printed circuit assemblies: Of television apparatus: Printed circuit boards and ceramic substrates with components assembled thereon, for color television receivers; subassemblies containing one or more of such boards or substrates, except tuners or convergence assemblies: Entered with components enumerated in additional U.S. note 4 to this chapter. However, the Box Module is beyond the scope of printed circuit boards and ceramic substrates. Therefore, this office believes that this Box Module is more specifically classified as other parts of television receivers consisting of subassemblies for color television receivers, containing two or more printed circuit boards (8529.90.8800, HTSUS).

The applicable subheading for the LCD Module/Panel will be 9013.80.9000, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Liquid crystal devices not constituting articles provided for more specifically in other headings; Other. The rate of duty will be 4.5 percent ad valorem.

The applicable subheading for the Box Module will be 8529.90.8800, Harmonized Tariff Schedule of the United States (HTSUS), which provides for Parts suitable for use solely or principally with the apparatus of headings 8525 to 8528: Other: Of television receivers: Subassemblies, for color television receivers, containing two or more printed circuit boards or ceramic substrates with components assembled thereon, except tuners or convergence assemblies: Entered with components enumerated in additional U.S. note 4 to this chapter. The rate of duty will be 4 percent ad valorem.

Duty rates are provided for your convenience and are subject to change. The text of the most recent HTSUS and the accompanying duty rates are provided on World Wide Web at http://www.usitc.gov/tata/hts/.

4.The price of products changes frequently, if you need to quote price, please inform the model which you need,we will give you the reasonable price as the standard quoted price in the same day

The excellent after-sale service team provide broader service platform for you.If you have any question about product,pls feel free to contact us, we"ll reply you within 12 hours.

EO here, and this week, I’m here to give you an in depth look into how our MD Select series is created, all the way from a RAW LCD to a finished product that ends up on your workbench.

We have our own factory in Shenzhen with about 60 employees where we produce our LCD screens, add small parts like camera brackets and proximity sensor brackets, and even create our packaging and boxing materials. On an average day, we’re producing 2,000-3,000 LCD screens. Having everything under one roof proves to be extremely advantageous in reducing defects at the source.

Getting into the production floor of the factory is no easy task for someone that’s six foot three. We are required to wear anti-static suits that cover us from head to toe. After I squeezed into my ESD-Onesie, I stepped into a decontamination chamber before a parallel door opened on the other side. Through the other side is where our story really begins.

All production starts with a team member running the raw LCDs through an electron microscope. They do this to check the sub-pixels throughout each LCD for consistency and accuracy before they’re cleared to enter the main production line.

These are put into a machine where the first IC get installed. This IC is the driver for the sub-pixels on the LCD which obtains information from the logic board on what to display. Each device model uses a different drive IC even though the LCD glass may be the same. The driver IC is bonded to the LCD glass with a special conductive adhesive called ACF. After this, the LCD flex cable is installed with another ACF machine. The assembled LCDs are then tested prior to proceeding in the production process.

After this we enter the first pressure room. These rooms are designed so that air can only enter through a system of filters and maintains a higher pressure than the surrounding areas. This prevents dust, debris, hair, etc, from contaminating the area of production. Here, there is a process of inspecting digitizer films and outer glass lenses. The digitizer film is responsible for touch sensitivity while the outer glass lens is the piece of glass that you actually use with your hands. Both pieces must be completely free of dust or contaminants. After a thorough inspecting and cleaning, the digitizer is bonded to the glass lens with optically clear adhesive.

The next step in the production process involves marrying the digitizer and outer glass assembly that was just created with the LCD assembly that was created earlier.

Coming into the other end of the line, the assemblies start to become more familiar. Here, depending on the model, the digitizer may need to be bonded to the LCD flex. Then the display assembly is tested again to ensure proper function. The final step in completing the display assembly involves adding the backlight. For models with 3D-Touch, the backlight assembly includes the 3D-Touch sensor and home button connection.

The last step of the assembly process in the factory line involves the frame installation. Years ago there were industry-wide issues involving frame separation in iPhone screens, but we’re happy to say that it’s just a piece of history now. You’ll find an automated torch making its way around a raw frame. The flame passes over the surface extremely quickly, but this process leaves just the top layer of the plastic chemically altered to help it bond with the adhesive that is installed in the next step.

After the adhesive is applied this frame goes into a guide for the previously assembled screen to be bonded to it. These frames are put into stacks that are then put into a machine commonly called a “cold press.” This applies pressure in a constant process for a specific amount of time before being sent to another part of the factory for the addition of proximity bracket, camera brackets, and standardized packaging.

Our addition of these small parts involves different individual stations for almost every piece, and every part is added by hand before being hand tested. This stage involves adding the front camera bracket, the proximity sensor bracket, ear speaker grille and any identifiers required for receiving back here in our US warehouse

LG Display (Korean: LG 디스플레이) is one of the world"s largest manufacturers and supplier of thin-film transistor liquid crystal display (TFT-LCD) panels, OLEDs and flexible displays. LG Display is headquartered in Seoul, South Korea, and currently operates nine fabrication facilities and seven back-end assembly facilities in Korea, China, Poland and Mexico.

LG Display was originally formed as a joint venture by the Korean electronics company LG Electronics and the Dutch company Philips in 1999 to manufacture active matrix liquid crystal displays (LCDs) and was formerly known as LG.Philips LCD, but Philips sold off all its shares in late 2008.joint venture, called LG.Philips Displays, dedicated to manufacturing cathode ray tubes, deflection yokes, and related materials such as glass and phosphors.

On 12 December 2008, LG.Philips LCD announced its plan to change its corporate name to LG Display upon receiving approval at the company"s annual general meeting of shareholders on 29 February. The company claimed the name change reflects the company"s business scope expansion and business model diversification, the change in corporate governance following the reduction of Philips" equity stake, and LG"s commitment to enhanced responsible management.

The company has eight manufacturing plants in Gumi and Paju, South Korea. It also has a module assembly plant in Nanjing and Guangzhou in China and Wroclaw in Poland.

LG Display became an independent company in July 2004 when it was concurrently listed on the New York Stock Exchange (NYSE: LPL) and the South Korean Stock Exchange (KRX: 034220).

In December 2010, the EU fined LG Display €215 million for its part in an LCD price fixing scheme.Chimei Innolux, AU Optronics, Chunghwa Picture Tubes Ltd., and HannStar Display Corp.

This followed the 2008 case in the US, when LG Display Co., Chunghwa Picture Tubes and Sharp Corp., agreed to plead guilty and pay $585 million in criminal finesliquid crystal display panels.

LG Display would pay $400 million, the second-highest criminal fine that the US Justice Department antitrust division had ever imposed. Chunghwa would pay $65 million for conspiring with LG Display and other unnamed companies and Sharp would pay $120 million, according to the department.