Samsung Display Co., Ltd. (N/A)
This disclosure relates to a mask and, more specifically to a mask which can emit light coating and to a method for manufacturing the mask.
Organic light emitting devices, which is one of the various kinds of display devices that are that are available, is sought after as a next-generation display device. This is due to its high contrast and broad viewing angle.
An organic light emitting display device may emit visible rays as electrons and holes that are injected into the cathode as well as the anode mix in organic light emitting layer and emit light. There are many ways to form electrodes, organic lights emitting layers and various other layers within an organic light emitting device. For example, in a deposition method one uses a fine-metal mask (FMM) having a predetermined pattern is closely adhered to a surface of the substrate and a material that forms a thin film is deposited onto the substrate by the FMM to form the thin film having the predetermined pattern. That is, to form the desired pattern of a thin film using a deposition technique, a mask having the same size as an organic light emittingdisplay device is utilized.
In recent times, as a display device’s size increases, a large mask with a precise pattern has been designed and is being used. Lasers can be utilized to create a pattern on a mask. It is also able to take off a portion of the mask. Lasers can cause damage to masks that aren’t removed.
The present disclosure discloses an apparatus and method of making the mask capable of preventing scratch to the mask during the time the mask is removed by the laser.
One version of the inventive concept provides an approach to creating an emollient. This involves providing a mask mother substrat with a first section and a plurality second portions that are adjacent to it, forming reflection plates on the mask mothersubstrat, and forming an image resist layer over the reflector plate, then removing a third part of the photoresist layers that overlaps the second portion of the plurality with an additional mask, and then removing the fourth portion of reflecting plate that overlaps the various second portions using laser.
A particular embodiment of the masque auxiliary may include a multiple openings that are overlapping the plurality second portions. The third portion of the photoresist layer that overlaps the plurality second portions can be removed by using an exposure procedure using the auxiliary masque.
A method of removal may be used to remove the third portion that is not covered by the plurality of second parts, and the fourth portion that is covered by the reflecting plate.
In one embodiment, the reflecting plate may reflect light corresponding to the frequency range that is within the wavelength of the laser.
In an embodiment, the reflecting plate may be supplied as a metallic film.
In an embodiment, removing the fourth section of the reflecting plate that overlaps the plurality of second portions and also removing other parts of the photoresist layers that overlap the first portion could be added.
Invar may be used as a mask mother substrate in one way.
A particular embodiment could have a mask mother substrate which is thicker than the reflective plate’s second thickness.
In a particular embodiment, the process of manufacturing a mask may further include the detection of laser reflections by the reflecting plate by an inspection device.
In an embodiment of the inventive concept, a method of manufacturing a mask includes providing a conductive substrate on which a photoresist layer including a plurality of openings is formed, forming a reflective metal layer by performingelectroplating on the conductive substrate overlapping the plurality of openings, forming a mask mother substrate on the reflective metal layer, separating the conductive substrate from the reflective metal layer and the mask mother substrate, andremoving portions of the mask mother substrate that do not overlap the reflective metal layer using a laser.
An embodiment may include a mother substrate which is thicker than the reflecting plate’s second thickness.
A particular embodiment could have reflective metal layers that reflects light within the range of wavelengths for the laser.
A mask is a manifestation of the original idea. It includes an original substrate that has plurality openings that are separated in a plan view , and an absorbing plate that is placed on the mother substrate.
In one form the reflecting plate could be made of a metal film.
In a particular embodiment, a initial thickness of the substrate may be greater than a second thickness of the reflecting plate.Click here to view the patent on USPTO website.
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Many drug firms and university researchers are seeking protection under patents for their research and developments. Patents can be granted to the physical or abstract nature of a product or process or method or composition of materials unique to the field. To be granted patent protection an invention has to be innovative, novel and not be obvious to anyone else within the same area.
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Patents effectively transform the inventor’s knowledge into a marketable asset that opens up new possibilities for employment creation and expansion of businesses by licensing or joint ventures.
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Patents can be used to stop untrustworthy third-party companies from earning through the work of inventions.
Revenues from patent-protected technology that are commercially successful could be used to finance technological research and development (R&D) that will improve the chances of developing better technology in the future.
Intellectual ownership of property can be used to convince investors and lenders that there are genuine chances to commercialize your product. Sometimes, one patent could open the door to multiple financing opportunities. Patents and other IP assets can be utilized as collateral or security for financing debt. You can also show investors the patents you own to increase the value of your company. Forbes and other publications have reported that each patent can increase between $500,000 and a million dollars in company valuation.
A well-constructed business plan is essential for new businesses. It should be based on IP and demonstrate how your product/service is distinctive. Investors will also be amazed if you have IP rights are secured or are on the verge of becoming secure, and if they are in line with your business strategy.
It is essential to keep an invention secret until you submit to protect it with patents. Public disclosure of an invention before filing it can often destroy its novelty and render it unpatentable. Therefore, prior filing disclosures (e.g., for test-marketing investors, test-marketing, or any other business partners) must only be done after signing a confidentiality agreement.
There are many types of patents. Knowing the different types of patents is vital to protect your invention. Utility patents are for inventions and processes that are new. Design patents cover ornamental designs. Utility patents are the most effective and protect the owner against copies and competitors. Utility patents are often issued to improve or alter existing inventions. Utility patents also cover improvements and changes to existing inventions. For example, a process patent covers acts or methods for performing a specific act, whereas a chemical composition will include the combination of ingredients.
How long will a patent last? Patents for utility last for 20 years after the earliest filing dates, but their expiration dates can be extended due to patent office delays such as.
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How to Search for Patents
A patent search is the first step towards obtaining your patent. You can do a google patent search or do a USPTO search. After the patent application is submitted, the product that is subject to the application may be described as patent-pending. you will be able to locate the patent application online on the public pair. Once the patent office has approved your application, you will be able to do a patent number search to find the patent that was issued. Your product will now become patented. Alongside the USPTO search engine, you can also utilize other search engines, such as espacenet, as detailed below. You can get help from a patent lawyer. In the US patents are issued by the US trademark and patent office or the United States patent and trademark office, which also reviews trademark applications.
Are you looking for similar patents? Here are the steps to follow:
1. Brainstorm terms to describe your invention, based on its purpose, composition, or use.
Write down a concise, precise description of your invention. Do not use generic terms such as “device,” “process,” and “system.” Instead, look for synonyms to the terms you selected initially. Next, note important technical terms and keywords.
Use the questions below to help you determine the keywords or concepts.
- What is the purpose of the invention? Is it a utilitarian device or an ornamental design?
- Is invention a way to come up with something or to perform a function? Does it constitute a product?
- What is the composition and function of the invention? What is the physical composition of the invention?
- What’s the purpose of the invention
- What are the technical terms and terms used to define the nature of an invention? To help you find the correct terms, consult a technical dictionary.
2. These terms allow you to look up relevant Cooperative Patent Classifications at Classification Search Tool. If you’re not able to determine the correct classification for your invention, look through the classification’s class Schemas (class schedules). Think about substituting the words you use to describe your invention if you fail to find any results in the Classification Text Search with synonyms such as the terms you used in Step 1.
3. Review the CPC Classification Definition to confirm the accuracy of the CPC classification that you have located. If the selected classification title has a blue box with the letter “D” on its left, clicking on the link will lead you to a CPC classification description. CPC classification definitions can help determine the relevant classification’s scope, so you are certain to choose the one that is relevant. These definitions may also include research tips or other suggestions that could be helpful for further study.
4. The Patents Full-Text Database and the Image Database allow you to search for patent documents that have the CPC classification. By focusing on the abstracts and drawings that are representative you can narrow your search for the relevant patent documents.
5. This collection of patent publications is the best to look at for any similarity to your idea. Be sure to read the specification and claims. Contact the applicant as well as the patent examiner to obtain additional patents.
6. Find patent applications published in the public domain using the CPC classification you chose in Step 3 from the Applications Full-Text and Image Database. The same method of searching can be employed as step 4. You can narrow your search results in order to locate the most pertinent patent applications by reading the abstracts and representative drawings on each page. Next, examine the patent applications that have been published carefully, paying special attention to the claims, and other drawings.
7. Locate additional US patent publications using keyword searches in PatFT and AppFT databases, searching for classification of non-U.S. patents as per below, and searching non-patent literature disclosures of inventions using internet search engines. Here are some examples:
- Add keywords to your search. Keyword searches may turn up documents that are not well-categorized or have missed classifications during Step 2. For example, US patent examiners often supplement their classification searches with keyword searches. Think about the use of technical engineering terminology rather than everyday words.
- Search for foreign patents using the CPC classification. Then, re-run the search using international patent office search engines such as Espacenet, the European Patent Office’s worldwide patent publication database of over 130 million patent publications. Other national databases include:
- European Patent Office (EPO) provides esp@cenet to access a network of Europe’s patent databases with access to machine translation of European patents.
- Japan Patent Office (JPO) – with access to machine translations of Japanese patents.
- World Intellectual Property Organization (WIPO) offers PATENTSCOPE with a full-text search of published international patent applications and machine translations for some documents, as well as a list of international patent databases.
- Korean Intellectual Property Rights Information Service (KIPRIS)
- State Intellectual Property Office (SIPO) with machine translation of Chinese patents.
- Other International Intellectual Property Offices with online patent databases include Australia, Canada, Denmark, Finland, France, Germany, Great Britain, India, Israel, Netherlands, Norway, Sweden, Switzerland, and Taiwan.
- Search non-patent literature. Inventions can be made public in many non-patent publications. It is recommended that you search journals, books, websites, technical catalogs, conference proceedings, and other print and electronic publications.
To review your search, you can hire a registered patent attorney to assist. A preliminary search will help one better prepare to talk about their invention and other related inventions with a professional patent attorney. In addition, the attorney will not spend too much time or money on patenting basics.