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Light sensing circuit, method of manufacturing the same, and optical touch panel including the light sensing circuit
US8928627B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8928627-B2 |
| Application number | US-201113165194-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 21, 2011 |
| Priority date | Dec 6, 2010 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
Official abstract text for this publication.
A light sensing circuit using an oxide semiconductor transistor, a method of manufacturing the light sensing circuit, and an optical touch panel including the light sensing circuit. Because the light sensing circuit includes only one light sensor transistor and one switch transistor formed on the same substrate, a structure of the light sensing circuit is simplified. Furthermore, because the light sensor transistor and the switch transistor have the same structure, a method of manufacturing the light sensing circuit is also simplified. Also, since an optical touch panel or an image acquisition apparatus using the light sensing circuit uses the light sensing circuit having a simple structure and does not use a capacitor, the optical touch panel or the image acquisition apparatus may be made thinner and larger.
First claim
Opening claim text (preview).
What is claimed is: 1. A light sensing circuit comprising: a substrate; a display cell; a first switch transistor for turning on or off the display cell; a light sensor transistor on the substrate, the light sensor transistor being configured to sense light; a second switch transistor on the substrate, the second switch transistor being configured to output data from the light sensor transistor; a light shielding film on a light incident surface of the second switch tran…
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Physics · mapped topic
Physics · mapped topic
- G06F3/0412Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8928627B2 cover?
- A light sensing circuit using an oxide semiconductor transistor, a method of manufacturing the light sensing circuit, and an optical touch panel including the light sensing circuit. Because the light sensing circuit includes only one light sensor transistor and one switch transistor formed on the same substrate, a structure of the light sensing circuit is simplified. Furthermore, because the li…
- Who is the assignee on this patent?
- Jeon Sang-Hun, Song I-Hun, Ahn Seung-Eon, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0412. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 06 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).