Liquid crystal panel

• US 9,146,436 B2
• Filed: 01/07/2014
• Issued: 09/29/2015
• Est. Priority Date: 12/27/2013
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Han, Bing, Wang, Jin Jie
• Primary Examiner(s): DUONG, THOI V
• Application Number:
  US14/234,394
• Publication Number:
  US 20150185572A1
• Time in Patent Office: 630 Days
• Field of Search: 257/72, 257/59, 257/E29.273, 349/43, 349/46, 349/106, 349/42, 349/138, 349/110, 349/139, 349/108, 349/143, 349/158, 438/158, 345/92, 345/214, 345/88
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/13629 Multilayer wirings
• CPC Class Codes: G02F 1/136295 Materials; Compositions; Manufacture processes
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence

Abstract

The present invention provides a liquid crystal panel which has a plurality of data lines, a plurality of scan lines and a plurality of display units. Each of the scan lines has a second metal wiring layer, a third metal wiring layer located above the second metal wiring layer, and two transparent conductive lines. The transparent conductive lines are spaced apart from each other and located between the second and third metal wiring layers. The second and third metal wiring layers can form a parallel connection by electrically connecting the second metal wiring layer with the third metal wiring layer, so that the impedance of the scan lines can be reduced.

Claims

1. A liquid crystal panel, comprising an array substrate of thin film transistor, a color filter substrate, and a layer of liquid crystal material between the thin film transistor array substrate and the color filter substrate, wherein a surface of the array substrate close to the layer of liquid crystal material comprises:

a plurality of data lines, each of which has a first metal wiring layer;

a plurality of scan lines vertically interlaced with the data lines, each of the scan lines having;

a second metal wiring layer interlaced with the first metal wiring layer, a third metal wiring layer located above the second metal wiring layer, and two transparent conductive lines spaced apart from each other and located between the second metal wiring layer and the third metal wiring layer, wherein one of the transparent conductive lines electrically connects the second metal wiring layer to a front end of the third metal wiring layer, and the other thereof electrically connects the second metal wiring layer to a rear end of the third metal wiring layer; and

a plurality of display units, each of which electrically connects to the corresponding data line and the corresponding scan line;

wherein the first metal wiring layer and the third metal wiring layer are made of the same metal, and the second metal wiring layer is made of a metal different therefrom.

2. The liquid crystal panel according to claim 1, wherein each of the transparent conductive lines comprises:

an inner portion away from the corresponding data line, and an outer portion close to the corresponding data line.

3. The liquid crystal panel according to claim 2, wherein the liquid crystal panel further comprises:

a first insulating layer formed on the second metal wiring layer, a lower through hole formed in the first insulating layer and connected the second metal wiring layer to the outer portion of the transparent conductive line, a second insulating layer formed on the first insulating layer and covered on the transparent conductive lines, and an upper through hole formed in the second insulating layer and connected the inner portion of the transparent conductive line to the third metal wiring layer.

4. The liquid crystal panel according to claim 1, wherein the first, second, and third metal wiring layers are selected respectively from chromium (Cr), molybdenum (Mo) or Cr—

Mo alloys.

5. A liquid crystal panel, comprising:

a plurality of data lines, each of which has a first metal wiring layer;

a plurality of scan lines vertically interlaced with the data lines, each of the scan lines having;

a second metal wiring layer interlaced with the first metal wiring layer, a third metal wiring layer located above the second metal wiring layer, and two transparent conductive lines spaced apart from each other and located between the second metal wiring layer and the third metal wiring layer, wherein one of the transparent conductive lines electrically connects the second metal wiring layer to a front end of the third metal wiring layer, and the other thereof electrically connects the second metal wiring layer to a rear end of the third metal wiring layer; and

a plurality of display units, each of which electrically connects to the corresponding data line and the corresponding scan line.

6. The liquid crystal panel according to claim 5, wherein each of the transparent conductive lines comprises:

an inner portion away from the corresponding data line, and an outer portion close to the corresponding data line.

7. The liquid crystal panel according to claim 6, wherein the liquid crystal panel further comprises:

a first insulating layer formed on the second metal wiring layer, a lower through hole formed in the first insulating layer and connected the second metal wiring layer to the outer portion of the transparent conductive line, a second insulating layer formed on the first insulating layer and covered on the transparent conductive lines, and an upper through hole formed in the second insulating layer and connected the inner portion of the transparent conductive line to the third metal wiring layer.

8. The liquid crystal panel according to claim 5, wherein the first and third metal wiring layers are made of the same metal, and the second metal wiring layer is made of a metal different therefrom.

9. The liquid crystal panel according to claim 8, wherein the first, second, and third metal wiring layers are selected respectively from chromium (Cr), molybdenum (Mo) or Cr—

Mo alloys.

10. A liquid crystal panel, comprising:

a plurality of data lines, each of which has a first metal wiring layer;

a plurality of scan lines vertically interlaced with the data lines, each of the scan lines comprising;

a second metal wiring layer interlaced with the first metal wiring layer, a third metal wiring layer located above the second metal wiring layer, and a single transparent conductive line located between the second metal wiring layer and the third metal wiring layer, wherein an end of the transparent conductive line electrically connects the second metal wiring layer to a front end of the third metal wiring layer, and the other end of the transparent conductive line electrically connects the second metal wiring layer to a rear end of the third metal wiring layer; and

a plurality of display units, each of which electrically connects to the corresponding data line and the corresponding scan line.

11. The liquid crystal panel according to claim 10, wherein a length of the transparent conductive line is greater than that of the third metal wiring layer.

12. The liquid crystal panel according to claim 10, wherein the transparent conductive line has a front portion and a rear portion, the front portion and the rear portion are close to two of the adjacent data lines, respectively, each of the front portion and the rear portion forms an upper through hole and a lower through hole, respectively, the upper through hole electrically connects to the third metal wiring layer, and the lower through hole electrically connects to the second metal wiring layer.

13. The liquid crystal panel according to claim 12, wherein the liquid crystal panel further comprises:

a first insulating layer formed on the second metal wiring layer;

a pair of lower through holes formed in the first insulating layer and connected the second metal wiring layer to the front portion and the rear portion of the transparent conductive line, respectively;

a second insulating layer formed on the first insulating layer and covered on the transparent conductive lines; and

a pair of upper through holes formed in the second insulating layer and connected the front portion and the rear portion of the transparent conductive line to the third metal wiring layer, respectively.

14. The liquid crystal panel according to claim 10, wherein the first and third metal wiring layers are made of the same metal, and the second metal wiring layer is made of a metal different therefrom.