Why OLED TV Skyworth 55S9300 dismantling evaluation

Evaluation Preface

Skyworth enjoys the OLED organic TV S9300 series, uses 4 color 4K self-illumination as the display core, equipped with JBL full range audio combination, top quality + professional audio for users to bring high-end audio and video experience. At the same time, a 4-core Cortex A17 CPU with a 1.8GHz clock frequency is equipped with a 4-core T760 GPU. The configuration is currently top-level and the functions are complete. Since the release date, this TV has attracted the attention of many consumers, allowing users who have expectations for OLED TVs to be ready.


Our YORK network appliance channel has previously conducted the first test of the 55-inch Skyworth 55S9300, and today we have to do is tear down! Let's take this TV apart and look at its internal detailed structure. Look at what's inside the TV and how it works. Check out the difference between OLED TV and LCD TV in the interior.

Internal Layout The Skyworth 55S9300 is a 55-inch OLED TV. It is very large in size and the screen is very thin. We must be very careful when dismantling it. We must take care to protect the screen.


Dismantling the site

In fact, TV dismantling is not complicated and a screwdriver can be completed. We first remove the screws on the back shell and remove the back shell. This back shell is heavy, weighty, and exquisite workmanship, highlighting the stylish home atmosphere.

Remove the back shell

After removing the back cover, you can see the circuit board inside the Skyworth S9300 TV, as follows:


Remove Skyworth S9300 TV body from back shell

It can be seen that the partition layout of Skyworth S9300 TV's functional circuit boards is very clear, and the power supply, screen driver, main board (movement), and audio are clear, and the wiring is well-ordered. In addition, the fixed wiring is made of flame-retardant adhesive tape, unlike the cheap fiber tape used in general television.


Skyworth S9300 TV internal layout

The overall interior feels neat and meticulous. The fuselage is grounded through the power cord and the internal traces are in accordance with the safety certification requirements, maintaining full distance.


The body is grounded through the power cord

Bluetooth, WIFI

Let's take a look at the components inside the Skyworth S9300 TV. There is a plastic shell on the left and right sides of the TV backshell, in addition to the mounting bracket, there are components inside. As shown below, there is a blue chip inside the power switch. The chip model is CSR8510, this chip supports the latest Bluetooth 4.0 protocol.


Power switch and Bluetooth chip

The breath light effect of the Skyworth S9300 TV screen is dazzling. After dismantling, take out the following picture. We observe that the original light consists of 20 LEDs to realize the lighting effect, and the gesture control switch is realized through the sensor.


Breathing light



Breathing light

Located on the right side of the breathing light is a small circuit board. This is a WIFI chip and the model is NTUD-86. From the configuration data of Skyworth S9300 TV, dual-band and hotspot are supported.


WIFI chip


Model NTUD-86

JBL audio than ordinary TV, Skyworth S9300 TV audio configuration of luxury, there are six JBL speakers on the front, for the high pitch unit, there are bass units on the back, forming a full range of coverage.


JBL "Golden Eye"

In the dismantling process, we removed the woofer unit. Its volume is very large. It is a one-piece package design and cannot be dismantled. The whole is fixed on the camera body by three soft rubber rings. This kind of processing facilitates sound transmission.
Woofer: Original JBL Subwoofer

Since it cannot be dismantled, we use the official data map to understand the structure of the bass unit:


Bass horn's internal structure

The front unit is fitted with a transparent acrylic plate and it has a crystal texture. The tympanic membrane of the unit uses carbon fiber silk film and silk cloth drum paper, and the sound effect is guaranteed.


Front speaker

Moreover, from the dismantling point of view, the quality of the internal audio cable is also quite standard:


High quality connection line

The following is the internal structure diagram of a 55-inch LCD TV. Compared with the structure diagram of Skyworth S9300, we can see that the S9300's audio parts are indeed much larger. Tailored by professional audio designers, Skyworth is really hard at TV audio.


Some 55 people have their own copy.

Power Circuit Next, let's take a look at the power circuit section of the Skyworth S9300 TV. In fact, when we just opened the back shell, we were already shocked: dense heat sinks! The TV's rated power is 450W. It can be imagined that this is a challenge for the power supply, especially in terms of heat, this power supply The dense heat sink on the board can solve this problem.


Full of heat sinks

This power supply circuit board is marked with the power supply model R8F052, and the design time is June 13, 2015. It can output three kinds of voltage and supply other electronic components of the TV. The large black capacitor in the figure above is Aconvuf. This capacitor is usually used to filter out clutter and stabilize the current signal. Acon is a Taiwan brand.

Work on the back of the circuit board

Skyworth S9300 TV's power supply circuit gives people a sense of solid workmanship. The materials used are real. From the back of the power supply board, it can be seen that every solder joint is accurate, accurate and full.

Below the chip mainboard is the movement of the Skyworth S9300 TV. The mainboard of the chip main control TV is similar to our usual computer mainboard and has chips such as CPU and memory.


Smart motherboard

The layout of the motherboard is very close, one side is full of power or data connection, one side is the TV interface, there are two large heat sinks in the middle, the following is the CPU, GPU and other main chip.


Motherboard Model: 5800-A8S870-0P10

This motherboard has Skyworth's LOGO, which should be produced by the company. The motherboard model is 5800-A8S870-0P10. The Skyworth S9300 uses a 1.8GHz 4-core Cortex A17 CPU with a 4-core T760 GPU, but all this is covered under the heat sink and is not easily dismantled. We only use it to imagine.

Movement board back: you can see very high integration

The screen drive circuit Skyworth S9300 is an OLED TV. The logic board that drives the OLED screen is the same as the LCD TV. First of all, what we have noticed is still a large area of ​​heat sink - this heat sink is only a fan less than computer graphics.


Screen driver circuit board, covered with a large aluminum plate for heat dissipation


The heat sink is in contact with the main chip through the black adhesive sheet above

With the heat sink removed, we can see the logic board that drives the OLED panel below. This board is also an LG product and can output 4 color 4K screens with the panel.

Removing the heat sink's screen driver logic board

The LG's logic board model is LC55OLQD-GHP5, and the design date is April 13, 2015. We can see that the chip used above is LG Display, the model is LG5322A2, and the memory chip is 5tq2g63ffr of Skhynix (Hynix).


LG Display's chip: Model LG5322A2

Skyworth S9300 TV uses LG's OLED screen to control the self-illumination of each pixel, and uses WRGB color 4K technology to add white sub-pixels on the basis of traditional RGB three-color to improve the screen display effect. These are basically all It is done through this logic board.

The same work on the back

The OLED screen has been demolished here, basically nothing left. Skyworth S9300 TV has only screen and body frames.


Remove all parts, leaving only the screen

We can see the label attached to the screen metal substrate, model LC550AQD, Made in KOREA, origin in Korea.


LG logo on the screen

We can't dismantle the screen, but we can introduce the physical structure of the OLED screen:


The basic structure of OLED, LCD

OLED (Organic Light-Emitting Diode), which is called Organic Light-Emitting Diode in Chinese, has a microscopic structure consisting of a thin, transparent, indium tin oxide (ITO) with a semi-conductor characteristic, which is connected to the positive electrode of the electric power. A metal cathode that wraps into a sandwich structure. The structural layer of the OLED includes a hole transport layer (HTL), a light emitting layer (EL) and an electron transport layer (ETL). When the power is supplied to an appropriate voltage, positive hole and cathode charges are combined in the light-emitting layer, and their energy is emitted as photons or thermal energy respectively. The photon part can be used as a display function to generate light.

At the macroscopic level, the basic structure of the OLED screen is usually a substrate+OLED self-emission+glass substrate. The substrate is mainly used for carrying, the OLED emits light from the light emitting body, and the glass substrate is used to protect the package. The screen structure of Skyworth OLED TV is also as follows:


Skyworth OLED TV screen structure

The following figure shows the screen structure comparison between LCD (liquid crystal) television and OLED (organic) TV. It can be seen that the latter greatly simplifies the structure compared to the former, and thus has excellent performance such as thinner screen body.


LCD/OLED characteristics comparison

Skyworth OLED TVs use self-illumination screens, and thus have the most significant advantage of black field control. When displaying black scenes, all self-emitting sub-pixels display a non-light-emitting state, allowing the screen to be completely resold without any light leakage.


OLED screen black performance

The contrast of the auto-illuminator is very high, and it can even be said to be infinity, which can make the TV screen highly hierarchical.


OLED screen with high contrast

The response time of the OLED self-illuminator is within 0.001 ms, which is 4000 times faster than the LCD screen of the LCD TV. Even when watching a high-speed motion picture such as racing, the OLED self-illuminator is still smooth and clear, solving the problem of smearing and afterimage.


OLED TV dynamic display better than LCD TV

In addition, traditional LCD TVs have a 60-degree luminance viewing angle of 40 degrees and a self-illuminating body can achieve a 160-degree luminance viewing angle and a 120-degree colorimetric viewing angle with a wider viewing angle.


Viewing angle

The OLED self-luminous body not only has good color performance, but it is worth mentioning that compared to the quantum dot technology, it does not contain heavy metals such as cadmium, indium, and the like, and is not toxic to the human body.


radiation-free

After the dismantling was concluded here, the dismantling of the Skyworth S9300's TV was largely completed. The internal structure of the OLED TV, as well as its workmanship and materials, were presented to everyone. I believe that all the netizens have their own opinions after reading. Skyworth S9300's component materials are mainly well-known brand products, in addition to the workmanship is also worth noting, the layout of the circuit board specifications, workmanship is also worthy of domestic manufacturers to produce, make people convinced.


Skyworth OLED TV S9300

Skyworth S9300 as a top flagship TV, not only beautifully designed, excellent picture quality, powerful, internal workmanship and materials are also guaranteed, consumers can rest assured when buying.

PS, we also made a 3D model for Skyworth S9300 TV, you can rotate freely to watch, you can also use the explosion map to watch the internal dismantling, will soon be on the line, interested friends, please stay tuned ~~


Specifications:


Mechanical life: More than 50.000 cycles

Electrical life: More than 100,000 cycles

Environment temperature Range: - 25 degrees ~ 85 degrees

Operating Relative Humidity Range: ≦96% RH, +40°C



Features


WIDE APPLICATION 

Widely used for various kinds of electrical products, instrument, car, boat, household appliances such as lights, water dispenser, treadmill, coffee pot, speaker, electric car, motorcycle, TV, massage machine etc.


EASY TO INSTALL AND USE

2 PIN on-off Rocker Switch with SPST design, simple installation, freely turn on or off the load which you want to control.


HIGH OPERATING LIFE

Made of high quality polyamide eP(Nylon PA66) material, this sturdy mini boat rocker switch is born for anti-corrosion,anti-acid and high resistant with silver terminals.100,000 times of ON/OFF operating life span.

Single Pole Rocker Switch

Small Rocker Switch,Micro Rocker Switch,Single Pole Rocker Switch,Single Rocker Switch

Ningbo Jialin Electronics Co.,Ltd , https://www.donghai-switch.com