TOUCH SCREEN LIQUID CRYSTAL DISPLAY
First Claim
1. An integrated liquid crystal display touch screen comprising:
- a first polarizer;
a second polarizer;
a first substrate having display control circuitry formed thereon, the first substrate being disposed between the first polarizer and the second polarizer;
a second substrate disposed between the first polarizer and the second polarizer and adjacent the first substrate; and
at least one touch sensing element disposed between the first and second substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane-switching (IPS) LCDs. In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed.
581 Citations
74 Claims
-
1. An integrated liquid crystal display touch screen comprising:
-
a first polarizer;
a second polarizer;
a first substrate having display control circuitry formed thereon, the first substrate being disposed between the first polarizer and the second polarizer;
a second substrate disposed between the first polarizer and the second polarizer and adjacent the first substrate; and
at least one touch sensing element disposed between the first and second substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. An electronic device incorporating an integrated liquid crystal display touch screen, the touch screen comprising:
-
a first polarizer;
a second polarizer;
a first substrate having display control circuitry formed thereon, the first substrate being disposed between the first polarizer and the second polarizer;
a second substrate disposed between the first polarizer and the second polarizer and adjacent the first substrate; and
at least one touch sensing element disposed between the first and second substrate. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
-
-
53. A mobile telephone incorporating an integrated liquid crystal display touch screen, the touch screen comprising:
-
a first polarizer;
a second polarizer;
a first substrate having display control circuitry formed thereon, the first substrate being disposed between the first polarizer and the second polarizer;
a second substrate disposed between the first polarizer and the second polarizer and adjacent the first substrate; and
at least one touch sensing element disposed between the first and second substrate. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61)
-
-
62. A method of operating an integrated liquid crystal display touch screen whereby updating of the display can be done concurrently with touch scanning, the method comprising:
-
dividing touch-sensing circuitry of the touch screen into a plurality of drive segments, each drive segment overlapping one or more display rows;
updating the display at a predetermined refresh rate;
stimulating the plurality of drive segments at a predetermined scan rate; and
changing the sequence of stimulating the plurality of drive segments as required to prevent simultaneously stimulating a drive segment that overlaps a display row currently being updated. - View Dependent Claims (63, 64, 65, 66)
-
-
67. A method of manufacturing an integrated liquid crystal display touch screen, the method comprising:
-
processing a first substrate, wherein processing the first substrate comprises;
applying a first ITO layer to the first substrate;
etching the first ITO layer;
applying a second ITO layer;
processing a second substrate, wherein processing the second substrate comprises;
forming one or more touch-sensing structures on the second substrate affixing the first substrate to the second substrate to form an LCD assembly; and
affixing one or more touch-sensing elements to the LCD assembly. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74)
-
Specification