Enhanced capacitance touch screen display and methods for use therewith
US-2024411406-A1 · Dec 12, 2024 · US
Touch sensor using capacitance detection and liquid crystal display having the same
US8928599B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8928599-B2 |
| Application number | US-81481810-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 14, 2010 |
| Priority date | Sep 10, 2009 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
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A liquid crystal display panel includes a touch sensor and the touch sensor includes a plurality of x-axis read-out lines, a plurality of y-axis read-out lines crossing the x-axis read-out lines, a plurality of sensor units provided in a plurality of regions defined by the x-axis read-out lines and the y-axis read-out lines. Each sensor unit comprises a reset unit that outputs a sampling voltage based on a reset voltage, a capacitance detector that generates a modified sampling voltage from the sampling voltage based on a variation of a cell gap of the display panel caused by a touch of the display panel, a first output unit that changes an electric potential of a corresponding x-axis read-out line in response to the modified sampling voltage and a second output unit that changes an electric potential of a corresponding y-axis read-out line in response to the modified sampling voltage.
First claim
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What is claimed is: 1. A liquid crystal display panel comprising a touch sensor, the touch sensor comprising: a plurality of x-axis read-out lines; a plurality of y-axis read-out lines crossing the x-axis read-out lines; and a plurality of sensor units provided in a plurality of regions defined by the x-axis read-out lines and the y-axis read-out lines, wherein each sensor unit comprises: a first transistor comprising a control terminal receiving a reset voltage and an inpu…
Assignees
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- G06F3/0412Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G02F1/133Primary
Physics · mapped topic
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- What does patent US8928599B2 cover?
- A liquid crystal display panel includes a touch sensor and the touch sensor includes a plurality of x-axis read-out lines, a plurality of y-axis read-out lines crossing the x-axis read-out lines, a plurality of sensor units provided in a plurality of regions defined by the x-axis read-out lines and the y-axis read-out lines. Each sensor unit comprises a reset unit that outputs a sampling voltag…
- Who is the assignee on this patent?
- Lee Byoung-Jun, Han Min-Koo, Park Hyun-Sang, and 3 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).