Semiconductor Energy Laboratory Co., Ltd. (Kanagawa-ken, JP)

Provided is a semiconductor device that can operate stably. The transistors that comprise the semiconductor device are transistors each of which contains an oxide semiconductor within the channel formation region. The transistor is equipped with two gates: a front gate and an back gate. The back gate can be equipped with a potential applied to it. This permits the threshold voltage to be altered in either the negative or positive direction. In order to convert the transistor to conductor state, change the threshold voltage to the negative direction. This will increase the amount of current flowing through the transistor. To change the threshold voltage in the direction of positive, decrease the flow of current. The circuit in the semiconductor device takes advantage of this effect and includes transistors all having the same polarity.

1. Field of the Invention

One example of this invention is the signal processing device as well as a semiconductor device that includes the signal processing system.

The present invention does not limit itself to the technical field. The technical area of the invention as described in this specification as well as the like pertains to an object a method, or a manufacturing method. The invention concerns the process, manufacturing device, machine, or a composition of material. This specification reveals specific examples of the fields of technology of one specific embodiment. These include a display device and liquid crystal devices.

2. Description of the Related Art

Recent years have seen the use of semiconductor devices such as central processing units (CPUs), memory or display devices in a variety of electronic devices, including personal computers, mobile phones and vehicles-mounted devices.

In circuits that are part of thesemiconductor devices It has been suggested to utilize a transistor having channels that are formed using an oxide semiconductor. Patent Document 1 describes a memory with a memory cell capable of storing data without the requirement for a power source. This is due to the OS transistor functioning as writing transistor. This implies that a memory containing an OS transistorcan be used as a nonvolatile memory.

Patent Document

[Patent Document 1] Japanese Published Patent Application No. 2011-187950

Click here to view the patent on USPTO website.


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What is a patent?

A patent is granted by the government to safeguard an invention a patent provides the inventor with exclusive rights to use, create, sell and promote the invention?society benefits when a new technology is brought into the marketplace. The benefits may be direct terms, as it can allow individuals to achieve previously impossible things. Or indirectly, by the economic benefits (business expansion and job creation) that innovation provides.

A lot of pharmaceutical companies and university researchers seek patent protection to protect their research and development. Patents can be granted to an abstract or physical product or process, or even a method or formulation of material that are new to the area. To be granted patent protection the invention must be useful, new and not be obvious to other people within the same area.

Patents reward inventors who have commercially successful inventions. They act as an incentive for inventors to come up with new ideas. Patents allow entrepreneurs and inventors to know that there’s a good chance they will get a profit for their time, effort and money spent on technological development. They can earn money by their work.

Patents play a vital role in firms and can be used to:

Protect your innovative products and services

Your products will be more prominent, valuable, and attractive to customers.

Differentiate your business and products from others;

Access business and technical expertise and data;

Beware of accidentally downloading third-party content or losing valuable information, original outputs, or any other outputs that are creative.

Patents transform inventors’ knowledge into a marketable asset, which creates new opportunities for job creation and business growth through licensing or joint ventures.

Small-scale businesses with patent protection are more attractive to investors involved in the development and commercialization of technology.

Patents can lead to the development of new ideas and new inventions. This information could be protected by patents.

Patents are a way to stop untrustworthy third-party companies from earning from the invention’s efforts.

Revenues from patent-protected technology that are commercially successful can be used to finance research and development (R&D), which will increase the chance of better technology in the coming years.

It is possible to use intellectual property ownership to convince investors and lenders that your product has commercial value. A single patent could open the door for numerous financing options. Patents can be used along with other IP assets as collateral or security financing. Investors can also see the patents you own to increase their company valuation. Forbes and other publications have reported that each patent can increase between $500,000 and a million dollars in company valuation.

A solid business plan is essential for start-ups. It should be built on IP and show how your product/service stands out. In addition, investors will be impressed when you show that your IP rights are secure or are in progress of being secure, and they can support your business plan.

It is vital to keep an invention secret before applying for patent protection. The public disclosure of an invention prior to filing is often detrimental to its novelty and make it ineligible for patent protection. Thus, disclosures that are filed prior to filing (e.g., for test-marketing investors, investors, or for other business partners) must only be done following the signing of a confidentiality agreement.

There are a variety of patents. Knowing them is essential to protect your invention. Utility patents cover new processes and machine creations. Design patents cover ornamental designs. Patents for utility are the best option to protect the proprietor from copycats and other competitors. Patents for utility are usually issued to improve or modify existing inventions. Utility patents also cover improvements and changes to existing inventions. A process patent would describe the methods or actions of performing a specific act. But, a chemical composition would include the combination of components.

What is the typical length of patents? While utility patents are valid for 20 years from the date of their earliest filing, they may be extended through delays at the Patent Office.

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Patent searches are an essential step when you’re working on an application for patent. This will enable you to look at different ideas and give you an insight into their inventions. You’ll be able to limit the scope of your idea. Additionally, you’ll be able to discover the latest art in your area of invention. You’ll be able to get a better idea of what your idea should be and will be more prepared to submit your patent application.

How to Search for Patents

The first step in getting the patent you want is to do the patent search. You can do a google patent search or do a USPTO search. After the patent application has been filed, the item subject to the patent can be described as patent-pending. you can locate the patent application online on the public pair. Once the patent office has approved your application, you will be able to conduct search for a patent number and locate the patent issued. The product you are selling will be patentable. In addition to the USPTO search engine, you may also use other search engines such as espacenet as described below. It is possible to seek help from an attorney for patents. In the US patents are issued through the US patent and trademark office or the United States patent and trademark office, which also reviews trademark applications.

Are you looking for similar patents? These are the steps to follow:

1. Think of terms that describe your invention, based on its purpose, composition, or use.

Begin by writing down a brief detailed description of your idea. Be sure to avoid using terms that are generic such as “device,” “process,” and “system.” Consider synonyms for the terms you picked initially. Then, take note of important technical terms and keywords.

Use the questions below to help you determine key words or concepts.

  • What’s the purpose of the invention? Is it a utilitarian device or an ornamental design?
  • Invention is a method to make something or carry out an action? Is it a product or process?
  • What is the composition and function of the invention? What is the physical composition of the invention?
  • What is the goal of this invention?
  • What are the terms in the technical field and keywords that describe an invention’s nature? To help you find the right terms, refer to a technical dictionary.

2. These terms allow you to search for pertinent Cooperative Patent Classifications at Classification Search Tool. To find the most appropriate classification for your invention, scan the classification’s class Schemes (class schedules). If you don’t see any results using the Classification Text Search, you might consider substituting your words for describing your invention using synonyms.

3. Check 3. Check the CPC Classification Definition for confirmation of the CPC classification you found. The link to a CPC classification definition is provided when the classification you have selected contains a blue box with “D” to the left. CPC classification definitions will aid you in determining the classification’s scope so that you can pick the one that is the one that is most appropriate. In addition they can provide research tips and other suggestions that may be useful to further study.

4. Get patent documents using the CPC classification from the Patents Full-Text and Image Database. You can review and find the most relevant patent documents by focusing first on the abstract and representative drawings.

5. This collection of patent publications is the most appropriate to check for connections with your invention. Pay close attention to the claims and specifications. It is possible to find additional patents by consulting the patent examiner and applicant.

6. You can retrieve patent applications published in the past that match the CPC classification you selected in Step 3. It is possible to use the same method of search in Step 4 to narrow your search results to the most relevant patent applications by looking at the abstract and representative drawings on each page. After that, you must review every patent application that has been published with care with particular attention paid to the claims and other drawings.

7. Find additional US patent publications by keyword searches in PatFT and AppFT databases, classification search of non-U.S. patents per below, and searching for non-patent patent disclosures in the literature of inventions using internet search engines. Here are a few 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:
  • 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.