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US 8,179,381 B2Granted
Touch screen sensor
Assignee3M Innovative Properties Company
InventorsMatthew H. Frey, Lijun Zu, Edward S. Hagermoser
Life of this patent
Estimating the term…
Abstract
A touch screen sensor includes a visible light transparent substrate and an electrically conductive micropattern disposed on or in the visible light transparent substrate. The micropattern includes a first region micropattern within a touch sensing area and a second region micropattern. The first region micropattern has a first sheet resistance value in a first direction, is visible light transparent, and has at least 90% open area. The second region micropattern has a second sheet resistance value in the first direction. The first sheet resistance value is different from the second sheet resistance value.
Claims30
A touch screen sensor, comprising:
- a visible light transparent substrate;
- an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern having:
- a conductor trace width of about X+0.5 in units of micrometers;
- and
- an open area fraction between about [98.5−(2.5X÷3.5)]% and [99.5−(X÷3.5)]% wherein 0≦X≦3.5.
2 more elements
A touch screen sensor, comprising:
- a visible light transparent substrate;
- and
- an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising a first region micropattern within a touch sensing area;
- wherein the first region micropattern includes metallic linear electrically conductive features having a width between about 0.5 and 5 micrometers;
- wherein the first region micropattern is visible light transparent and having between about 95% and 99.5% open area;
- and
- wherein for the first region micropattern of the sensor having 1 millimeter by 1 millimeter square regions, none of the square regions have a shadowed area fraction that differs by greater than about 75% from the average for all of the square regions.
4 more elements
A touch screen sensor, comprising:
- a visible light transparent substrate;
- and
- an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising a first region micropattern within a touch sensing area;
- wherein the first region micropattern includes metallic linear electrically conductive features have a width between about 0.5 and 5 micrometers;
- wherein the first region micropattern is visible light transparent and having between about 95% and 99.5% open area;
- and
- wherein for the first region micropattern of the sensor having 5 millimeter by 5 millimeter square regions, none of the square regions have a shadowed area fraction that differs by greater than 50% from the average for all of the square regions.
4 more elements
A touch screen sensor, comprising:
- a visible light transparent substrate;
- and
- an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising a first region micropattern within a touch sensing area;
- wherein the first region micropattern includes conductive traces with width between about 0.5 and 10 micrometers;
- wherein the first region micropattern is visible light transparent and having between 90% and 99.9% open area;
- and
- wherein for the first region micropattern having 5 millimeter by 5 millimeter square regions, none of the square regions have a shadowed area fraction that differs by greater than about 75% from the average for all of the square regions.
4 more elements
A touch screen sensor, comprising:
- a visible light transparent substrate;
- and
- an electrically conductive micropattern disposed on or in the visible light transparent substrate, the micropattern comprising a first region micropattern within a touch sensing area;
- wherein the first region micropattern includes a metallic linear electrically conductive features have a width between about 1 and 10 micrometers;
- wherein first region micropattern is visible light transparent and having between about 90% and 99.5% open area and
- wherein the first region micropattern including selective breaks in conductive traces within an otherwise continuous and uniform mesh, wherein the first region micropattern can be subdivided into 5 millimeter by 5 millimeter square regions and wherein none of the square regions have a shadowed area fraction that differs by greater than about 75% from the average for all of the square regions.
3 more elements
A touch screen sensor, comprising:
- a visible light transparent substrate;
- and,
- a touch-sensitive electrically conductive micropattern disposed on or in the visible light transparent substrate;
- wherein the micropattern includes conductive traces with width between about 1 and 2 micrometers, wherein for the first region micropattern having 5 millimeter by 5 millimeter square regions, none of the square regions have a shadowed area fraction that differs by greater than about 75% from the average for all of the square regions.
1 more element
Dependencies are inferred from the claim text.