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e-learning électronique
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Registrace 16. 02. 2020
Éducation électronique
Signs of LCD TV screen defect Horizontal line, double image and screen breakage
Through this short video, presentation of 3 examples of screen failure in 3 different LCD TVs. The 3 failures presented are a screen breakage, appearance of a double image on the display and the presence of horizontal lines.
zhlédnutí: 13 668
Video
Identification and function of the T Con board in an LCD TV
zhlédnutí 64KPřed 2 lety
This video presents an electronic board called T Con which is an abbreviation of timing control. This board is used in LCD TVs. Its location and its role are explained in a succinct manner without going into too much technical detail.
Internal structure of a liquid crystal or LCD TV screen
zhlédnutí 105KPřed 2 lety
In this episode the internal architecture of a liquid crystal display found in LCD TVs is discussed. The design of this type of screen requires an assembly of different parts such as polarizing filters, liquid crystal, electronic circuits and color filter.
VGH and VGL production mode by the TCON board. The charge pump converter.
zhlédnutí 34KPřed 2 lety
In this episode, the production of the 2 voltages necessary for the proper functioning of a TFT screen of an LCD television is discussed, namely the voltages VGH and VGL. The circuit used by the DC DC converter to obtain these 2 voltages is called a Dickson charge pump. It is also known by the term of voltage doubler or voltage multiplier.
VDD and AVVD voltage production mode by the TCON board . The Buck and boost converters.
zhlédnutí 24KPřed 2 lety
This episode deals with the way in which the Tcon board produces the various voltages for the power supply of the screen. In this video, is detailed the mode of operation of the boost and the buck converter. These 2 circuits are located in the DC-DC converter of the TCON board. The Boost Converter produces the AVDD voltage. The Buck Converter produces the VDD voltage also known as V Logic.
Video signal transmission between motherboard and Tcon via LVDS. VESA and JEIDA standard
zhlédnutí 41KPřed 2 lety
This video discusses several concepts including the VESA and JEIDA standards. The path of the video signal via the LVDS system and its transmission from the motherboard of the TV to the LCD display via the TCON board. The notion of parallel to serial data converter also known as serialzer deserializer IC.
Meaning of the LVDS used between the motherboard of an LCD TV and the TCON board
zhlédnutí 32KPřed 2 lety
The video discusses the operating principle of the LVDS system used as a means of digital data transmission. LVDS is an abbreviation for low voltage differential signaling. This data transmission system has a high immunity to interferences and allows to keep the quality of the signal which passes between the motherboard of an LCD TV and the TCON board. To detail the LVDS, several concepts are d...
The Gamma chip of the TCON board and the role of the opamp configured as a voltage follower
zhlédnutí 46KPřed 2 lety
In this video is exposed the electronics constituting a Gamma chip that we find in the TCON card of a TFT LCD TV as the reference AS15 and AS19. Here is detailed the difference between a classic gamma chip and those which are known as programmable. For the clarity of the presentation are recalled some basic principles in electronics as the voltage divider and operational amplifiers (opamp) espe...
Role of the Gamma chip of the TCON board in an LCD TV
zhlédnutí 26KPřed 2 lety
This video gives an overview of another essential component of the TCON board, the Gamma chip. This is an integrated circuit involved in the display and image quality. Some very basic mathematical notions are discussed to explain the principle of Gamma correction of the image.
Meaning of STH CPH TP POL SOE STB and relationship between TCON Gamma and source driver
zhlédnutí 72KPřed 2 lety
The subject treated in this video concerns the source driver chip and its role in the management of data in an LCD screen. The internal constitution of this chip is developed. Several notions of electronics are approached like the flip-flops, the latch, the digital to analog converter and the way the Gamma voltages are used to restore the colors of the pixels composing an image. The operation o...
Signification de STH CPH TP POL SOE STB et relation entre le Gamma du TCON avec le source driver
zhlédnutí 13KPřed 2 lety
Le sujet traité dans cette vidéo concerne la puce du source driver et son rôle dans la gestion du data dans un écran LCD. La constitution interne de cette puce est développée. Plusieurs notions d’électroniques sont abordées comme les bascules, le latch, le convertisseur numérique à analogique et la manière dont les tensions Gamma sont utilisées pour restituer les couleurs des pixels composant u...
What does it mean on a TCON board CPV CKV CKVB STV STVP OE XAO RL UD VGH VGL
zhlédnutí 434KPřed 2 lety
In this presentation several electronic concepts are developed in connection with the TCON board in a TFT LCD TV and the operation of the gate driver. The electronic content of this chip is detailed. Thus we find a bi-directional shift register, a level shifter, a voltage follower and logic gates including NAND. The operation of this assembly requires various voltages either in logic form such ...
Que signifie sur une carte TCON les termes CPV CKV CKVB STV STVP OE XAO RL UD VGH VGL
zhlédnutí 33KPřed 2 lety
Dans cette présentation est développée plusieurs concepts d’électronique en rapport avec la carte TCON dans un téléviseur LCD TFT et le fonctionnement du pilote de commande de grille des TFT plus connu sous son nom anglais de Gate driver. Le contenu électronique de cette puce est détaillé. Ainsi on trouve un registre à décalage bi directionnel, un décaleur de niveau, un suiveur de tension et de...
Geometry of pixels in an LCD screen and their control by the Gate driver
zhlédnutí 33KPřed 2 lety
This video deals with the geometry of pixels in an LCD screen, i.e. their spatial organization. Some examples of configuration are explained such as RGB pixels in vertical or horizontal Stripe. A brief reminder is given on the perception of colors by the human eye and its practical translation by the invention of Pen Tile screens to get closer to human vision. In the last part, the different wa...
Géométrie des Pixels dans un écran LCD et modalité de leur contrôle par le pilote de grille
zhlédnutí 3,8KPřed 2 lety
Cette vidéo aborde la géométrie des pixels dans un écran LCD, c’est-à-dire leur organisation spatiale. Quelques exemples de configuration sont expliqués comme les pixels en bande verticale ou horizontale. Un bref rappel est donné sur la perception des couleurs par l’œil humain et sa traduction pratique par l’invention des écrans Pen Tile pour se rapprocher de la vision humaine. En dernière part...
Organization of the pixels in LCD screen and the different circuits of their control from the TCON
zhlédnutí 88KPřed 3 lety
Organization of the pixels in LCD screen and the different circuits of their control from the TCON
Organisation des pixels dans un écran LCD et les différents circuits de leur commande depuis le TCON
zhlédnutí 14KPřed 3 lety
Organisation des pixels dans un écran LCD et les différents circuits de leur commande depuis le TCON
Transmission video signal between the motherboard and the Tcon via LVDS. The VESA and JEIDA standard
zhlédnutí 18KPřed 3 lety
Transmission video signal between the motherboard and the Tcon via LVDS. The VESA and JEIDA standard
Meaning of the LVDS used between the motherboard of an LCD TV and the TCON card
zhlédnutí 14KPřed 3 lety
Meaning of the LVDS used between the motherboard of an LCD TV and the TCON card
The Gamma chip of the T CON board role of the op amp voltage follower
zhlédnutí 17KPřed 3 lety
The Gamma chip of the T CON board role of the op amp voltage follower
Role of the Gamma chip of the TCON board in an LCD television
zhlédnutí 8KPřed 3 lety
Role of the Gamma chip of the TCON board in an LCD television
Modality of production of VGH and VGL by the TCON board by means of the charge pump converter.
zhlédnutí 12KPřed 3 lety
Modality of production of VGH and VGL by the TCON board by means of the charge pump converter.
Mode of production of VDD and AVVD by the TCON card. The Boost and Buck Converter.
zhlédnutí 10KPřed 3 lety
Mode of production of VDD and AVVD by the TCON card. The Boost and Buck Converter.
Internal structure of the liquid crystal display or LCD screen
zhlédnutí 19KPřed 3 lety
Internal structure of the liquid crystal display or LCD screen
Identification and function of the T Con card in an LCD TV
zhlédnutí 39KPřed 3 lety
Identification and function of the T Con card in an LCD TV
Nice video
très bonne explication basé sur la science des circuit numérique. svp : j'ai changé la carte mère d'un t samsung mais j ai pas trouvé sa qualité en full hd.sachant qu'elle est en fhd
It is good information, actually nowadays the Gate Driver not used anymore, the Panel Maker only use Source Driver and the data running to the each pixel parallely
Can i know you in real life bro? I respected your knowledge and also sharing ability too... Thank you to share all this info clearly with us.
Merci bcq.
Hii guys. I recently discovered this informativo you uploaded down here in CZcams and must say it is the only one complete enough un order to build a Real base on this topic. I have developed severa questions that get me confused indeed, one is ¿ When gamma voltages are bellow v-com how the Flow of current take places if this transistor is biased in reverse Mode at that moment?
Nice
Hello, hope you are fine. Can you plz make a video about xao vltage and what the difference between xao and 3.3 volt as both have same voltage
😅
DO ALL SUBPIXEL ( TRANSISTOR ) MOVE CORESPOND WITH ICON MOVEMENT...?🫣😎🤔
Bonjour ! J'ai un souci avec un Samsung 55" qui présente quelques bandes noires après qu'on ait démonté l'écran pour changer les LEDs.
Merci beaucoup pour ces informations
Wow perfect !
very good explanations
very Good explanation
great and beutiful explaination thanks a billion, God Bless
Très bonsoir, les vidéos sont très bonnes et très importantes pour ceux d'entre nous qui se consacrent à la réparation de téléviseurs en Amérique latine, pourriez-vous les sous-titrer en espagnol ? S'il vous plait
If screen is gray, it means, we have no VGH but VGL is present. So mosfets are opened by themselves?
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this is very intersting in my view. please lets you provide about backlight driver and releted video
Hi sir , can you please suggest any book where all these information available in brief
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Excuse moi je voulais savoir comment régler un problème de image qui balance
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Hi! This video series are great! I have grapped so much thanks to you! Only thing that is not clear to me is that, where does the CLK input for shift registers come from? I designed tcon boards but only clock we provide to the cell is coming from Level shifters CLK_OUT1 to 10. And their frequency is not that high. They probably only activated the gates so they are for gate driver. But for source driver, I do not provide any clock in UHD resolution, the cells I desined for utilizes ISP and CEDS signals. No clocks. So I wonder where the clock that is for storing the data in DAC regs is coming from?
Nicely explained
Very nice thank u
Kindly translate English lanuage
czcams.com/video/O5XH5-w3Y8s/video.html&ab_channel=e-learning%C3%A9lectronique
Hi. If one single color vertical line is visible on the display all the time, (rest of the image is normal) at maximum brightness, what exactly is the problem? In my case, rouhly in the middly of the screen, there is a 1 pixel wide blue very bright vertical line. Thanks.
Otimo video
Slow the hell down pal! That’s a lot of information in a video that’s 8 minutes long and I barely understood a word because of how fast you go through things!
The best vidio thanks alot
Super sir If able please speak English language. Thanks I am Tamil language tamilnadu, India
I need this datasheet please. S6C2T94A01-60U
It was a very good explanation with animations. 🙏🙏
THE BEST EXPLANATION I HAVE EVER SEEN; THANKS A LOT!
Excuse me, what happen if I cut the ckv signals?
Great great video, full of information never seen, thanks a lot to share it with us
Thank you Sir..... vary vary important and rather understanding all the techniques.❤❤ Please sir can U make a descriptive video for the bonding process.
THANK YOU SO MUCH
if theres a vertical and a horizontal polarizing filter, what else passes through that makes the screen not black? if they block everything?
same question
👍👍👍🙂
El mejor canal d la red 🙂👍👍👍. Súper agradecido con sus súper videos profesor.Saludos desde Cuba
Thanks you for this video
Cómo ya dije. Este es el mejor canal de toda la red, saludos y dios lo bendiga profesor.🙂
Muy buena su paguina . En ningun lado de youtube explica esta informacion solo usted. Mil gracias.
Exelente video
Hi sasiru
These videos are insanely well made. Concise, to the point. Great visualisations.
In hindi