Dual display technologies display

Patent metadata

Field	Value
Publication number	US-2016351648-A1
Application number	US-201514722528-A
Country	US
Kind code	A1
Filing date	May 27, 2015
Priority date	May 27, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A display device comprising an organic light emitting diode (OLED) display; and an electrophoretic display (EPD). The OLED display and the EPD share a common backplane, the common backplane comprising thin-film transistors (TFTs) of the OLED display and TFTs of the EPD thereon.

First claim

1 . A display device comprising:
an organic light emitting diode (OLED) display; an electrophoretic display (EPD), wherein the OLED display and the EPD share a common substrate, the common substrate comprising:
thin-film transistors (TFTs) of the OLED display and TFTs of the EPD thereon; and
a driver system that drives the OLED display and the EPD; wherein the OLED display is adjacent the EPD, and the EPD is interposed between the OLED display and the EPD; wherein OLED wires connecting the driver system and the OLED display pass through an area of the substrate dedicated to the EPD; wherein the area of the substrate dedicated to the EPD comprises the TFTs of the EPD and a passive border having a first portion extending along a length of an edge of the EPD adjacent the OLED display, the first portion of the passive border interposed between the TFTs of the EPD and the TFTs of the OLED display; and wherein the passive border switchable as a whole between colors available in the EPD and the passive border not showing graphical content.

2 . The display device of claim 1 , wherein an encapsulation layer of the OLED display is formed on both an electrode layer of the OLED display and an electrophoretic imaging layer of the EPD.

3 . The display device of claim 2 , wherein the encapsulation layer is between a reference layer of the EPD and the electrophoretic imaging layer of the EPD.

4 . The display device of claim 3 , wherein the OLED display comprises an on-cell sensor layer.

5 . The display device of claim 4 , wherein the on-cell sensor layer and the reference layer comprise indium tin oxide (ITO), and are co-planar.

6 . The display device of claim 1 , comprising:
a touch panel, wherein the touch panel extends over the EPD and the OLED display.

7 . (canceled)

8 . A user device comprising:
the display device of claim 1 ; and a housing, wherein the housing supports the display.

9 - 11 . (canceled)

12 . The user device of claim 8 , comprising:
a touch panel, wherein the touch panel extends over the EPD and the OLED display; and one of a chip-on-glass, a chip-on-foil, a chip-on-flex, or a flexible printed circuit, wherein the chip-on-glass, the chip-on-foil, the chip-on-flex, or the flexible printed circuit comprises the driver system of the display, and wherein EPD wiring from the driver system to the TFTs of the EPD and the OLED wiring from the driver system to the TFTs of the OLED display do not comprise a wiring crossing.

13 - 14 . (canceled)

15 . The user device of claim 8 , wherein the user device is a wearable device or a mobile device, and the user device further comprising:
a power source; a communication interface; a memory, wherein the memory stores instructions; and a processor, wherein the processor is configured to execute the instructions.

16 - 19 . (canceled)

20 . The display device of claim 1 , wherein a color of the passive border matches a background of the EPD.

21 . The display device of claim 1 , wherein the passive border has a second portion extending along a length of an edge of the EPD opposite the OLED display.

22 . The display device of claim 21 , wherein the passive border has a third portion between the first and second portions and separating areas of the TFTs of the EPD.

23 . The display device of claim 22 , wherein the wires connecting the driver system and the OLED display traverse slits in the third portion of the passive border.

24 . The display device of claim 1 , wherein the wires connecting the driver system and the OLED display traverse areas of the TFTs of the EPD.

25 . The display device of claim 24 , wherein the wires connecting the driver system and the OLED display traverse areas of the TFTs of the EPD in a space between an EPD foil and the TFTs of the EPD, the EPD foil overlies the TFTs of the EPD and the passive border.

26 . The display device of claim 1 , wherein the lack of graphical content shown on the passive border and the passive border switchable as a whole causing the display device to appear borderless.

Assignees

• Sony Mobile Communications Inc

Inventors

• Ek Martin
• Grip Martin
• Hunt Alexander

Classifications

• G09G2300/046

  with an emissive area and a light-modulating area combined in one pixel · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title

• G02F2201/44

  Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers · CPC title

• G09G2330/021

  Power management, e.g. power saving · CPC title

• G09G2300/0408

  Integration of the drivers onto the display substrate · CPC title