Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and information about some of the electronic, electrical and electrotechnical Obsolete technology relics that the Frank Sharp Private museum has accumulated over the years .
Premise: There are lots of vintage electrical and electronic items that have not survived well or even completely disappeared and forgotten.

Or are not being collected nowadays in proportion to their significance or prevalence in their heyday, this is bad and the main part of the death land. The heavy, ugly sarcophagus; models with few endearing qualities, devices that have some over-riding disadvantage to ownership such as heavy weight,toxicity or inflated value when dismantled, tend to be under-represented by all but the most comprehensive collections and museums. They get relegated to the bottom of the wants list, derided as 'more trouble than they are worth', or just forgotten entirely. As a result, I started to notice gaps in the current representation of the history of electronic and electrical technology to the interested member of the public.

Following this idea around a bit, convinced me that a collection of the peculiar alone could not hope to survive on its own merits, but a museum that gave equal display space to the popular and the unpopular, would bring things to the attention of the average person that he has previously passed by or been shielded from. It's a matter of culture. From this, the Obsolete Technology Tellye Web Museum concept developed and all my other things too. It's an open platform for all electrical Electronic TV technology to have its few, but NOT last, moments of fame in a working, hand-on environment. We'll never own Colossus or Faraday's first transformer, but I can show things that you can't see at the Science Museum, and let you play with things that the Smithsonian can't allow people to touch, because my remit is different.

There was a society once that was the polar opposite of our disposable, junk society. A whole nation was built on the idea of placing quality before quantity in all things. The goal was not “more and newer,” but “better and higher" .This attitude was reflected not only in the manufacturing of material goods, but also in the realms of art and architecture, as well as in the social fabric of everyday life. The goal was for each new cohort of children to stand on a higher level than the preceding cohort: they were to be healthier, stronger, more intelligent, and more vibrant in every way.

The society that prioritized human, social and material quality is a Winner. Truly, it is the high point of all Western civilization. Consequently, its defeat meant the defeat of civilization itself.

Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

OLD, but ORIGINAL, Well made, Funny, Not remotely controlled............. and not Made in CHINA.

How to use the site:
- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

Every CRT Television saved let revive knowledge, thoughts, moments of the past life which will never return again.........

Many contemporary "televisions" (more correctly named as displays) would not have this level of staying power, many would ware out or require major services within just five years or less and of course, there is that perennial bug bear of planned obsolescence where components are deliberately designed to fail and, or manufactured with limited edition specificities..... and without considering........picture......sound........quality........
..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

Have big FUN ! !
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©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All sets and apparates appearing here are property of Engineer Frank Sharp. NOTHING HERE IS FOR SALE !
All posts are presented here for informative, historical and educative purposes as applicable within Fair Use.


Thursday, December 16, 2010

INNO-HIT mod. TVC 614 CRT TUBE SAMSUNG 3701B22


Black matrix composition for use in color cathode ray tube: 

In a conventional shadow-mask-type CRT, graphic images are reproduced by red, green, and blue electron beams emitted from means for producing them which pass through a hole of a shadow mask, converge into a point, and collide with red, green, and blue phosphors formed on a phosphor screen of an inner surface of a panel.
The phosphor screen comprises red, green, and blue phosphors which have a pattern and black matrix which is formed on the same surface and between the phosphors. Generally, the black matrix is a photo-absorptive layer produced by using photoresisting effect of a photoresist.
The black matrix for a color CRT is produced by packing illuminescent absorptive materials between phosphors. The black matrix prevents the contrast of the CRT from decreasing, which is caused by luminescence of aluminium layer occurring when the electrons scattered around the inner panel of the CRT and the hole of a shadow mask collide with the phosphor screen. The black matrix also prevents the chromaticity from decreasing, which is caused by luminescence of dots and stripes of the phosphors when the neighboring dots and stripes are radiated by the electron beams.

The present invention provides a black matrix composition that improves the contrast and the color purity at the same time. The black matrix composition comprising colloidal graphite as a major component, and ferric oxide (Fe2 O3), cobalt aluminate(CoOxAl2 O3), or mixture thereof, at a certain ratio as a pigment. The iron and surfactant are added as a cohesive. The above mixed pigment absorbs the red and blue light so as to improve the contrast and the color purity. The iron partial having magnetism can strengthen the cohesion so as to form the preferable deposited thickness of the black matrix composition. 

1. A black matrix composition for use in a color cathode ray tube comprising a colloidal graphite as a major component, which comprises 0.8-5 weight percentage of graphite, 0.1-1 weight percentage of iron, 1.7-4.2 weight percentage of pigment, 0.1-0.5 weight percentage of surfactant and remaining water.

2. The black matrix composition as claimed in claim 1, wherein the pigment comprises at least one of ferric oxide, cobalt aluminate, and mixtures thereof.

3. The black matrix composition as claimed in claim 1, wherein the particle size of graphite is up to 1 μm.

4. The black matrix composition as claimed in claim 1, wherein the particle size of iron is up to 1 μm.

5. A black matrix composition for use in a color cathode ray tube comprising a colloidal graphite as a major component, which comprises 0.8-5 weight percentage of graphite, 0.1-1 weight percentage of iron, 1.7-4.2 weight percentage of ferric oxide (Fe2 O3) and 1.7-4.2 weight percentage of cobalt aluminate (CoOX Al2 O3) as mixed pigment, 0.1-0.5 weight percentage of surfactant and remaining water.

6. The black matrix composition as claimed in claim 5, wherein the particle size of graphite is up to 1 μm.

7. The black matrix composition as claimed in claim 5, wherein the particle size of Fe is up to 1 μm.

Description:
FIELD OF THE INVENTION
The present invention relates to a black matrix composition which can be used as a black matrix deposited among phosphors, and specially to a black matrix composition comprising graphite and pigment(s that improves the contrast and the color purity of a screen of a color picture tube. 

BACKGROUND OF THE INVENTION
A color picture is formed such that electron beams emitted from an electron gun strike phosphors deposited as stripes or dots on the fluorescent layer of a color picture tube. In this process, the conventional method provides that a black matrix is deposited among a color pattern in order to minimize reduction in color purity caused by electron beams' mislanding on corresponding phosphors.
Conventionally, a composition has been used as a composition for use in the black matrix, comprising graphite, surfactant, water and the other additives.
However, the black matrix maded of the above composition does not have the advantage of improving the contrast of the picture, since it cannot filter the internal light, especially a blue light with wave length of 450 nm and a red light with wave length of 620 nm occurring inside when the electron beams strike the phosphors and lowers the contrast.
In order to solve this problem, Japanese specification No. 84-215635 proposes that a blue refractive layer be deposited on blue phosphors and that this layer plays a part in a filter absorbing the internal light of the phosphors. However, this method lowers the color purity, and the complex fabricating process required results in bad productivity. 

SUMMARY OF THE INVENTION
According to the present invention, there is provided a black matrix with a material absorbing a major peak wave length of a phosphor added to the graphite composition, whereby the contrast and the color purity are improved at the same time.
To achieve this feature, the present invention proposes a black matrix composition comprising colloidal graphite, ferric oxide (Fe2 O3), cobalt aluminate (CoOxAl2 O3), or mixture thereof as a pigment which can absorb an internal and external light of a major peak wave length of the phosphor, wherein iron particles and a surfactant may be added as a cohesive.

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