Enhanced capacitance touch screen display and methods for use therewith
US-2024411406-A1 · Dec 12, 2024 · US
Touch panel, display device, and electronic device
US9035908B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9035908-B2 |
| Application number | US-63962409-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 16, 2009 |
| Priority date | Dec 24, 2008 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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Abstract
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It is an object to provide a touch panel with high precision, high-speed operation, and low power consumption, which is caused by reduction of power consumption in an A/D converter circuit is reduced. In the touch panel in which a photo sensor is included in a pixel and an A/D converter circuit is provided every one column or a plurality of columns of the pixels, a control signal of the A/D converter circuit is sequentially supplied by a shift register included in an ADC (A/D converter circuit) control circuit, and respective periods when the plurality of A/D converter circuits operates are not overlap with each other. Accordingly, the number of A/D converter circuits which operate at the same time is decreased, and instantaneous power consumption in the A/D converter circuit is decreased.
First claim
Opening claim text (preview).
What is claimed is: 1. A touch panel comprising: a pixel circuit including a plurality of pixels, each pixel including a photo sensor; and a photo sensor signal line reading circuit for taking an output signal of the photo sensor, the photo sensor signal line reading circuit including a plurality of A/D converter circuits and an ADC control circuit, wherein the plurality of A/D converter circuits are provided at every one column or at every plurality of columns of the pluralit…
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Physics · mapped topic
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 US9035908B2 cover?
- It is an object to provide a touch panel with high precision, high-speed operation, and low power consumption, which is caused by reduction of power consumption in an A/D converter circuit is reduced. In the touch panel in which a photo sensor is included in a pixel and an A/D converter circuit is provided every one column or a plurality of columns of the pixels, a control signal of the A/D con…
- Who is the assignee on this patent?
- Kurokawa Yoshiyuki, Semiconductor Energy Lab
- 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 May 19 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).