ACTIVE MATRIX CIRCUIT SUBSTRATE AND DISPLAY DEVICE

• US 20080224990A1
• Filed: 02/22/2008
• Published: 09/18/2008
• Est. Priority Date: 03/08/2007
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: SHIMODAIRA, Yasuhiro
• Application Number:
  US12/035,728
• Publication Number:
  US 20080224990A1
• Time in Patent Office: Days
• US Class Current: 345/107
• CPC Class Codes: G02F 1/133388 with constructional differences between the display region and the peripheral region
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer
• CPC Class Codes: G02F 1/167 by electrophoresis
• CPC Class Codes: G02F 1/16757 Microcapsules
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/08 Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
• CPC Class Codes: G09G 2310/0232 Special driving of display border areas
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• 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

Abstract

Provided is an active matrix circuit substrate including: a substrate on which a plurality of pixels are formed in a predetermined region; a plurality of pixel electrodes which are respectively provided in the pixels formed on the substrate and include peripheral pixel electrodes which protrude from the predetermined region to an outer region of the predetermined region; and pixel driving circuits which are provided in the predetermined region of the substrate in correspondence with the pixel electrodes and supply driving signals to the pixel electrodes.

Claims

1. An active matrix circuit substrate comprising:

a substrate on which a plurality of pixels are formed in a predetermined region;

a plurality of pixel electrodes which are respectively provided in the pixels formed on the substrate and include peripheral pixel electrodes which protrude from the predetermined region to an outer region of the predetermined region; and

pixel driving circuits which are provided in the predetermined region of the substrate in correspondence with the pixel electrodes and supply driving signals to the pixel electrodes.

2. The active matrix circuit substrate according to claim 1, further comprising a driver circuit which is provided in the outer region of the predetermined region of the substrate and supplies electrical signals to the pixel driving circuits,

wherein portions of the peripheral pixel electrodes overlap the driver circuit in plan view.

3. The active matrix circuit substrate according to claim 1, wherein the area of each of the peripheral pixel electrodes is larger than that of each of the pixel electrodes provided in the predetermined region.

4. The active matrix circuit substrate according to claim 3, wherein the pixel driving circuits supply the driving signals each having an intensity according to the area of each of the pixel electrodes.

5. The active matrix circuit substrate according to claim 1, wherein the plurality of pixel driving circuits are provided in each of the peripheral pixel electrodes.

6. The active matrix circuit substrate according to claim 1, wherein the plurality of peripheral pixel electrodes are provided and some of the plurality of peripheral pixel electrodes are ground electrodes.

7. The active matrix circuit substrate according to claim 1, wherein the plurality of peripheral pixel electrodes are provided and some of the plurality of peripheral pixel electrodes are segment driving electrodes.

8. The active matrix circuit substrate according to claim 7, wherein a driving circuit for independently driving the segment driving electrodes is provided.

9. A display device comprising:

first and second substrates which face each other with an electrophoretic material layer interposed therebetween;

pixel electrodes which are formed on a surface of the first substrate opposite to the second substrate; and

opposing electrodes which are formed on a surface of the second substrate opposite to the first substrate,

wherein the first substrate is the active matrix circuit substrate according to claim 1.

10. The display device according to claim 9, wherein the electrophoretic material is an electrophoretic dispersion which is composed of electrophoretic particles and a liquid phase dispersion medium which disperses the electrophoretic particles.