Display device with integral touch panel surface
First Claim
1. A flat panel liquid crystal display device comprising:
- a front transparent rigid base;
a rear transparent base;
a liquid crystal fluid layer sandwiched between the front and rear bases;
a rear polarizer layer on the rear transparent base; and
a touch panel integrated into the display device over the front transparent rigid base, the touch panel comprising;
a transparent flexible membrane including a front polarizer layer, afirst transparent conductive layer on a lower surface of the front polarizer layer; and
a second transparent conductive layer on an upper surface of the front transparent rigid base;
wherein the first and second transparent conductive layers are double-index matched;
a plurality of spacer bumps between the lower surface of the transparent flexible membrane and the upper surface of the rigid base,wherein the spacer bumps are sized and positioned such that they do not obstruct an active pixel area; and
bus bars and a tail connected to the conductive layers.
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Accused Products
Abstract
A touch panel is integrated into a flat panel display device having a visual display surface with a front polarizer layer, particularly a liquid crystal display device. The touch panel comprises a flexible transparent membrane containing the front polarizer layer and having a first transparent conductive layer on a lower surface of the flexible transparent membrane and a rigid base comprising the flat panel display device and having a second transparent conductive layer on an upper surface of the rigid base. At least one spacer separates the flexible transparent membrane from the rigid base, keeping the first and second transparent conductive layers in spaced-apart facing relationship. A bus bar and tail communicate a signal from the touch panel to the flat panel display device.
37 Citations
12 Claims
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1. A flat panel liquid crystal display device comprising:
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a front transparent rigid base; a rear transparent base; a liquid crystal fluid layer sandwiched between the front and rear bases; a rear polarizer layer on the rear transparent base; and a touch panel integrated into the display device over the front transparent rigid base, the touch panel comprising; a transparent flexible membrane including a front polarizer layer, a first transparent conductive layer on a lower surface of the front polarizer layer; and a second transparent conductive layer on an upper surface of the front transparent rigid base; wherein the first and second transparent conductive layers are double-index matched; a plurality of spacer bumps between the lower surface of the transparent flexible membrane and the upper surface of the rigid base, wherein the spacer bumps are sized and positioned such that they do not obstruct an active pixel area; and bus bars and a tail connected to the conductive layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification