Active device array substrate

• US 9,312,284 B2
• Filed: 06/11/2014
• Issued: 04/12/2016
• Est. Priority Date: 11/12/2013
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: E Ink Holdings Incorporated
• Inventors: Wu, Chi-Ming, Huang, Wei-Te, Hsieh, Chun-Wei, Yan, Shu-Ping
• Primary Examiner(s): HALL, VICTORIA KATHLEEN
• Application Number:
  US14/301,346
• Publication Number:
  US 20150129880A1
• Time in Patent Office: 671 Days
• Field of Search: 257/59, 257/72, 345/103, 345/204, 345/205, 345/84, 345 98-100
• US Class Current: 1/1
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/13456 Cell terminals located on one side of the display only
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2310/0278 Details of driving circuits arranged to drive both scan and data electrodes
• CPC Class Codes: G09G 2310/0281 Arrangement of scan or data electrode driver circuits at the periphery of a panel not inherent to a split matrix structure
• CPC Class Codes: G09G 3/344 based on particles moving in a fluid or in a gas, e.g. electrophoretic devices electrophoretic devices per se G02F1/167
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52

Abstract

An active device array substrate includes a substrate, first signal lines, second signal lines, pixel units, selection units, an insulating layer, and a driving unit. The second signal lines and the selection lines are electrically connected with the driving unit. The insulating layer is disposed among the first signal lines, the second signal lines and the selection lines and has contact holes. The contact holes are disposed corresponding to the first signal lines, and a portion of the selection lines are electrically connected with the first signal lines via the contact holes. The selection line corresponding to the contact hole the farthest from the driving unit and the closest to a reference axis of the substrate and the selection line corresponding to the contact hole the closest to the driving unit and the reference axis respectively receive a start signal and a terminal signal provided by the driving unit.

Claims

1. An active device array substrate, comprising:

a substrate having a reference axis, an active area, and a periphery area located around the active area, wherein the reference axis divides the active area into a first region and a second region;

a plurality of first signal lines disposed in the active area of the substrate;

a plurality of second signal lines disposed on the substrate and interlacing with the first signal lines;

a plurality of pixel units disposed within the active area and electrically connected to the corresponding first signal lines and the corresponding second signal lines;

a plurality of selection lines disposed on the substrate and extending from the active area to the periphery area along with the second signal lines;

an insulating layer disposed among the first signal lines, the second signal lines, and the selection lines and having a plurality of contact holes, the contact holes disposed corresponding to the first signal lines, and a portion of the selection lines electrically connected to the first signal lines respectively via the contact holes, wherein the contact holes are divided into a first plurality of contact holes located within the first region and a second plurality of contact holes located within the second region; and

a driving unit disposed on the substrate and located in the periphery area, wherein the second signal lines and a portion of the selection lines are electrically connected to the driving unit,

orthogonal projections of the first plurality of contact holes form a first line, the first line positioned diagonally with respect to the first signal lines, the second signal lines, and the selection lines, a first end point of the first line corresponding to a first contact hole of the first plurality of contact holes, the first contact hole being positioned closest to the reference axis and farthest from the driving unit of all contact holes of the first plurality of contact holes, and a second end point of the first line corresponding to a second contact hole of the first plurality of contact holes, the second contact hole being positioned farthest from the reference axis of all contact holes of the first plurality of contact holes, and closest to the driving unit of all contact holes of the first plurality of contact holes;

orthogonal projections of the second plurality of contact holes form a second line, the second line positioned diagonally with respect to the first signal lines, the second signal lines, and the selection lines, a first end point of the second line corresponding to a third contact hole of the second plurality of contact holes, the third contact hole being positioned closest to both the reference axis and the driving unit of all contact holes of the second plurality of contact holes, and a second end point of the second line corresponding to a fourth contact hole of the second plurality of contact holes, the fourth contact hole being positioned farthest from the reference axis of all contact holes of the second plurality of contact holes, and farthest from the driving unit of all contact holes of the second plurality of contact holes;

and the selection line corresponding to the first contact hole and the selection line corresponding to the third contact hole are configured, respectively, to receive a start signal and a terminal signal provided by the driving unit.

2. The active device array substrate as recited in claim 1, wherein one of each of the first signal lines and each of the second signal lines is a scan line, and the other one of each of the first signal lines and each of the second signal lines is a data line.

3. The active device array substrate as recited in claim 1, wherein the driving unit comprises at least one first driving unit and a plurality of second driving units, and the first driving unit is located between the second driving units.

4. The active device array substrate as recited in claim 3, wherein either:

(a) the first driving unit is a gate driving unit and each of the second driving units is a source driving unit;

or

(b) the first driving unit is a source driving unit and each of the second driving units is a gate driving unit.

5. The active device array substrate as recited in claim 3, wherein the at least one first driving unit is a plurality of first driving units, and the first driving units and the second driving units are disposed alternately.

6. The active device array substrate as recited in claim 3, wherein the second signal lines are electrically connected to the first driving unit, and the selection lines are electrically connected to the second driving units.

7. The active device array substrate as recited in claim 1, wherein a shape of the active area comprises a circle shape, an oval shape, a regular pentagon shape, or a rectangular shape having rounded corners.

8. The active device array substrate as recited in claim 1, wherein the selection lines and the second signal lines are arranged in parallel in the active area, and the selection lines and the second signal lines connected to the driving unit in the periphery area do not interlace with one another.

9. The active device array substrate as recited in claim 1, wherein each of the selection lines is located between the two adjacent second signal lines, and a number of the pixel units in a longest column of pixel units is equivalent to a number of pixel units in a longest row of pixel units.

10. The active device array substrate as recited in claim 9, wherein the first line and the second line are parallel lines.

11. The active device array substrate as recited in claim 1, wherein the selection lines comprise a plurality of first selection lines and a plurality of second selection lines, each of the first selection lines and each of the second selection lines are located between two adjacent second signal lines, and a number of pixel units in a longest column of pixel units is greater than a number of pixels in a longest row of pixel units.