IP Library › Granted Patent US 8,237,677
Granted Patent B2
US 8,237,677 · App. 12/459,566 · Granted Aug 7, 2012

Liquid crystal display screen

Assignees: Tsinghua University; Hon Hai Precision Industry Co., Ltd.
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Quick Facts
Patent No.
US 8,237,677
App. No.
12/459,566
Granted
Aug 7, 2012
Kind
B2
Abstract

A liquid crystal display screen includes an upper component, a bottom component and a liquid crystal layer. The upper component includes a touch panel. The touch panel includes a first conductive layer. The conductive layer includes a transparent carbon nanotube structure, and the transparent carbon nanotube structure includes a plurality of metallic carbon nanotubes. The bottom component includes a thin film transistor panel. The liquid crystal layer is located between the upper component and the lower component.

Claims (47)

1. An apparatus, the apparatus comprising:

an upper component comprising a touch panel;

the touch panel comprises:

a first conductive layer;

wherein the first conductive layer comprises a stand-alone, self-adhesive first carbon nanotube film the first carbon nanotube film comprises a plurality of first carbon nanotube segments joined end-to-end by van der Waals attractive force therebetween; each of the plurality of first carbon nanotube segments comprises a plurality of first carbon nanotubes parallel to each other and joined by van der Waals attractive force therebetween; the plurality of first carbon nanotube segments are successively oriented and integrated together by van der Waals attractive force therebetween to form the first carbon nanotube film;

a bottom component comprising a thin film transistor panel; and

a liquid crystal layer located between the upper component and the lower component.

2. The apparatus of claim 1 , wherein the touch panel comprises:

a first electrode plate comprising:

a first substrate,

the first conductive layer located on a surface of the first substrate, and

two first electrodes that are connected to the first conductive layer; and

a second electrode plate separated from the first electrode plate, and comprising:

a second substrate;

a second conductive layer located on the second substrate; the second conductive layer comprises a stand-alone, self-adhesive second carbon nanotube film the second carbon nanotube film comprises a plurality of second carbon nanotube segments joined end-to-end by van der Waals attractive force therebetween; each of the plurality of second carbon nanotube segments comprises a plurality of second carbon nanotubes parallel to each other and joined by van der Waals attractive force therebetween; the plurality of second carbon nanotube segments are successively oriented and integrated together by van der Waals attractive force therebetween to form the second carbon nanotube film; and

two second electrodes, the two second electrodes are electrically connected to the second conductive layer;

an insulative layer located between the first and second electrode plates, the insulative layer insulates the first electrode plate from the second electrode plate;

one or more of dot spacers, the one or more of dot spacers are located between the first conductive layer and the second conductive layer.

3. The apparatus of claim 2 , wherein the first conductive layer comprise two first carbon nanotube films and the second conductive layer comprise two second carbon nanotube films.

4. The apparatus of claim 3 , wherein the first carbon nanotube film and the second carbon nanotube film have a thickness in a range from about 0.5 nanometers to about 1 millimeter.

5. The liquid crystal display screen of claim 3 , wherein the two first carbon nanotube films are stacked on each other, and the two second carbon nanotube films are stacked on each other.

6. The apparatus of claim 3 , wherein the two first carbon nanotube films are stacked on each other, and the two second carbon nanotube films are stacked on each other.

7. The apparatus of claim 1 , wherein the first conductive layer further comprise polymer infiltrated in the first carbon nanotube film and the second conductive layer further comprise polymer infiltrated in the second carbon nanotube film.

8. The apparatus of claim 7 , wherein the polymer comprises a material that is selected from the group consisting of polystyrene, polyethylene, polycarbonate, polymethyl methacrylate, polyethylene terephthalate, Benzo Cyclo Butene, and polyalkenamer.

9. The apparatus of claim 1 , wherein the plurality of first carbon nanotubes in the first conductive layer are arranged along a first direction, and the plurality of second carbon nanotubes in the second conductive layer are arranged along a second direction.

10. The apparatus of claim 9 , wherein the first direction is perpendicular to the second direction.

11. The apparatus of claim 1 , wherein the upper component further comprises a first polarizer and a first alignment layer, the first polarizer is located between the touch panel and the first alignment layer, and the first alignment layer is adjacent to the liquid crystal layer.

12. The apparatus of claim 11 , wherein the first polarizer comprises a plurality of carbon nanotubes arranged along the same direction.

13. The apparatus of claim 12 , wherein a thickness of the first polarizer ranges from about 1 micrometer to about 0.5 millimeters.

14. The apparatus of claim 1 , wherein the thin film transistor panel further comprises:

a third substrate;

a display driving circuit;

a plurality of thin film transistors located on the third substrate and electrically connected to the display driving circuit; and

a pixel electrode connected to each of the thin film transistors.

15. The apparatus of claim 1 , wherein the bottom component further comprises a second alignment layer and a second polarizer, the thin film transistor panel is located between the second alignment layer and the second polarizer, and the second alignment layer is adjacent to the liquid crystal layer.

16. The apparatus of claim 1 , wherein the bottom component further comprises a carbon nanotube layer configured for both polarizing light and aligning liquid crystals, wherein the carbon nanotube layer comprises a plurality of carbon nanotubes substantially arranged along a primary direction.

17. An apparatus, the apparatus comprising:

an upper component comprising a touch panel;

the touch panel comprises:

a first electrode plate comprising: a first substrate and a first transparent carbon nanotube structure located on a surface of the first substrate and comprising a stand-alone, self-adhesive first carbon nanotube film the first carbon nanotube film comprises a plurality of first carbon nanotube segments joined end-to-end by van der Waals attractive force therebetween; each of the plurality of first carbon nanotube segments comprises a plurality of first carbon nanotubes parallel to each other and joined by van der Waals attractive force therebetween; the plurality of first carbon nanotube segments are successively oriented and integrated together by van der Waals attractive force therebetween to form the first carbon nanotube film, wherein the plurality of first carbon nanotubes are arranged along a first direction; and

a second electrode plate separated from the first electrode plate, and comprising: a second substrate and a second transparent carbon nanotube structure located on a surface of the second substrate and comprising a stand-alone, self-adhesive second carbon nanotube film; the second carbon nanotube film comprises a plurality of second carbon nanotube segments joined end-to-end by van der Waals attractive force therebetween; each of the plurality of second carbon nanotube segments comprises a plurality of second carbon nanotubes parallel to each other and joined by van der Waals attractive force therebetween; the plurality of second carbon nanotube segments are successively oriented and integrated together by van der Waals attractive force therebetween to form the second carbon nanotube film, and wherein the plurality of second carbon nanotubes are arranged along a second direction, the first direction being perpendicular to the second direction;

two first electrodes that are connected to the first transparent carbon nanotube structure;

two second electrodes that are electrically connected to the second transparent carbon nanotube structure;

an insulative layer located between the first and second electrode plates to insulates the first electrode plate from the second electrode plate; and

one or more of dot spacers located between the first transparent carbon nanotube structure and the second transparent carbon nanotube structure;

a bottom component comprising a thin film transistor panel; and

a liquid crystal layer located between the upper component and the lower component.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 2, 2009
From: JIANG, KAI-LI; LIU, LIANG; FAN, SHOU-SHAN; CHEN, GA-LANE; CHENG, JIA-SHYONG; WU, JEAH-SHENG
To: TSINGHUA UNIVERSITY; HON HAI PRECISION INDUSTRY CO., LTD
Reel/Frame 022963/0966 →
Priority Claims (7)
CN 2008 1 0068315 · Jul 4, 2008 · national
CN 2008 1 0068316 · Jul 4, 2008 · national
CN 2008 1 0068317 · Jul 4, 2008 · national
CN 2008 1 0068318 · Jul 4, 2008 · national
CN 2008 1 0068319 · Jul 4, 2008 · national
CN 2008 1 0068371 · Jul 9, 2008 · national
CN 2009 1 0004619 · Feb 20, 2009 · national
Continuity (1)
Related Publication 20100001976A1 · Jan 7, 2010