LIQUID CRYSTAL DISPLAY DEVICE HAVING TOUCH AND THREE-DIMENSIONAL DISPLAY FUNCTIONS AND METHOD FOR MANUFACTURING THE SAME

• US 20130154977A1
• Filed: 12/14/2012
• Published: 06/20/2013
• Est. Priority Date: 12/15/2011
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Han, Jong-Hyun, Lee, So-Hyung, Kang, Byung-Koo, Kim, Dong-Sup
• Granted Patent: US 9,141,223 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02B 30/00 Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images in microscopes G02B21/22
• CPC Class Codes: G02F 1/133 Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

Disclosed are a liquid crystal display device having touch and three-dimensional display functions and a method for manufacturing the same. The liquid crystal display device includes a touch and three-dimensional image display panel adhered to a liquid crystal panel through an adhesive layer, wherein the touch and three-dimensional image display panel includes a lower substrate provided with first and second electrodes for realizing a three-dimensional image, a upper substrate provided with third and fourth electrodes for sensing touch and a common electrode for realizing the three-dimensional image, and a liquid crystal display filled between the upper and lower substrates.

Claims

1. A liquid crystal display device comprising a touch and three-dimensional image display panel adhered to a liquid crystal panel through an adhesive layer,

wherein the touch and three-dimensional image display panel comprises:

a lower substrate provided with first and second electrodes for realizing a three-dimensional image;

a upper substrate provided with third and fourth electrodes for sensing touch and a common electrode for realizing the three-dimensional image; and

a liquid crystal display filled between the upper and lower substrates.

4. The liquid crystal display device according to claim 1, wherein the upper substrate is formed of a tempered glass substrate.

5. The liquid crystal display device according to claim 1, wherein the upper substrate or the lower substrate further comprises a black matrix layer.

6. The liquid crystal display device according to claim 1, wherein the upper substrate is formed of a polarized glass substrate having a hard-coated surface.

2. A liquid crystal display device comprising a touch and three-dimensional image display panel adhered to a liquid crystal panel through an adhesive layer,

wherein the touch and three-dimensional image display panel comprises:

a upper substrate provided with third and fourth electrodes for sensing touch and first and second electrodes for realizing a three-dimensional image;

a lower substrate provided with a common electrode for realizing the three-dimensional image; and

a liquid crystal display filled between the upper and lower substrates.

3. A liquid crystal display device comprising a touch and three-dimensional image display panel adhered to a liquid crystal panel through an adhesive layer,

wherein the touch and three-dimensional image display panel comprises:

a upper substrate provided with a plurality of routing lines for sensing touch, routing lines for realizing a three-dimensional image, electrodes for sensing touch, and electrodes for realizing the three-dimensional image;

a lower substrate provided with a common electrode to realize the three-dimensional image; and

a liquid crystal display filled between the upper and lower substrates,

wherein the routing lines for realizing a three-dimensional image are disposed on an edge of the upper substrate, the routing lines for sensing touch are disposed in the center thereof, and the electrodes for sensing touch correspond one-to-one to the routing lines for sensing touch.

7. A method for manufacturing a liquid crystal display device comprising a touch and three-dimensional image display panel adhered to a liquid crystal panel through an adhesive layer, the method comprising:

forming first and second routing lines for realizing a three-dimensional image on a lower substrate of the touch and three-dimensional image display panel;

forming a first protective film over the entire surface of the lower substrate including the first and second routing lines and forming a plurality of first contact holes in the first routing line;

forming a plurality of first electrodes on the first protective film such that the first electrodes are electrically connected to the first routing line through the first contact holes;

forming a second protective film over the entire surface of the lower substrate including the first electrodes and forming a plurality of second contact holes in the second routing line;

forming a plurality of second electrodes on the second protective film such that the second electrodes are electrically connected to the second routing line through the second contact holes;

forming third and fourth routing lines for sensing touch on an upper substrate of the touch and three-dimensional image display panel;

forming a plurality of bridges on the upper substrate to connect electrodes arrayed in an X-axis direction;

forming a third protective film over the entire surface of the substrate and forming a plurality of third contact holes in the third and fourth routing lines and the bridges;

forming X- and Y-axial electrodes on the third protective film such that the X- and Y-axial electrodes are connected to the third and fourth routing lines and the bridges through the third contact holes;

forming a fourth protective film over the entire surface of the substrate;

forming a common electrode for realizing the three-dimensional image on the fourth protective film; and

joining the upper substrate and the lower substrate such that the upper substrate faces the lower substrate, and forming a liquid crystal layer between the upper substrate and the lower substrate.

10. The method according to claims 7, further comprising forming a column spacer on the upper substrate or the lower substrate.

11. The method according to claim 7, further comprising forming a black matrix layer on the upper substrate or the lower substrate.

12. The method according to claim 7, wherein a tempered glass substrate is used as the upper substrate.

13. The method according to claim 7, wherein a hard-coated polarized glass substrate is used as the upper substrate.

8. A method for manufacturing a liquid crystal display device comprising a touch and three-dimensional image display panel adhered to a liquid crystal panel through an adhesive layer, the method comprising:

forming first and second routing lines for sensing touch and third and fourth routing lines for realizing a three-dimensional image on an upper substrate of the touch and three-dimensional image display panel;

forming a first protective film over the entire surface of the substrate including the first to fourth routing lines and forming a plurality of first contact holes in the first routing lines for sensing touch;

forming a plurality of first electrodes on the first protective film such that the first electrodes are electrically connected to the first routing lines through the first contact holes;

forming a second protective film over the entire surface of the substrate and forming a plurality of second contact holes in the second routing lines;

forming a plurality of second electrodes on the second protective film such that the second electrodes are electrically connected to the second routing lines through the second contact holes;

forming a third protective film over the entire surface of the substrate and forming a plurality of third contact holes in the third routing line for displaying a three-dimensional image;

forming a plurality of third electrodes on the third protective film such that the third electrodes are electrically connected to the third routing line through third contact holes;

forming a fourth protective film over the entire surface of the substrate including the third electrodes and forming a plurality of fourth contact holes in the fourth routing line;

forming a plurality of fourth electrodes on the fourth protective film such that the fourth electrodes are electrically connected through the fourth contact holes to the fourth routing line;

forming a common electrode for realizing the three-dimensional image on a lower substrate of the touch and three-dimensional image display panel; and

joining the upper substrate to the lower substrate such that the upper substrate faces the lower substrate, and forming a liquid crystal layer between the upper substrate and the lower substrate.

9. A method for manufacturing a liquid crystal display device comprising a touch and three-dimensional image display panel adhered to a liquid crystal panel through an adhesive layer, the method comprising:

forming first and second routing lines for realizing a three-dimensional image on an edge of a upper substrate of the touch and three-dimensional image display panel and forming a plurality of third routing lines for sensing touch in a central portion of the upper substrate, corresponding to a display region;

forming a first protective film over the entire surface of the upper substrate and forming a plurality of first contact holes in the third routing lines for sensing touch, respectively;

forming a plurality of first electrodes on the first protective film such that the first electrodes are electrically connected through the first contact holes to the third routing lines, respectively;

forming a second protective film over the entire surface of the substrate and forming a plurality of second contact holes in the first routing line for displaying a three-dimensional image;

forming a plurality of second electrodes on the second protective film such that the second electrodes are electrically connected to the first routing line through the second contact holes;

forming a third protective film over the entire surface of the substrate and forming a plurality of third contact holes in the second routing line;

forming a plurality of third electrodes on the third protective film such that the third electrodes are electrically connected to the second routing line through the third contact holes;

forming a common electrode for realizing the three-dimensional image on a lower substrate of the touch and three-dimensional image display panel; and

joining the upper substrate to the lower substrate such that the upper substrate faces the lower substrate, and forming a liquid crystal layer between the upper substrate and the lower substrate.