Display device integrated with touch screen panel

• US 9,600,127 B2
• Filed: 11/06/2014
• Issued: 03/21/2017
• Est. Priority Date: 11/19/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Hong, Sang-Min
• Primary Examiner(s): Moon, Seokyun
• Assistant Examiner(s): Shen, Peijie
• Application Number:
  US14/535,190
• Publication Number:
  US 20150138146A1
• Time in Patent Office: 866 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• 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

A display device with an integrated touch screen panel is disclosed. In one aspect, the display device includes an upper substrate and a lower substrate each including a display region and a non-display region. A sealing member is formed between the non-display regions of the upper and lower substrates and the sealing member includes a first region and a second region, wherein the second region is located adjacent to the corners of the substrates. An electrode is formed over substantially the entire display region of the lower substrate. A power line is formed in the non-display region of the lower substrate and a first connection electrode is formed electrically connecting the power line to an end portion of the electrode. Each of the power line, the end portion of the electrode, and the first connection electrode at least partially overlaps the first region and does not overlap the second region.

Claims

1. A touch screen display, comprising:

an upper substrate and a lower substrate each comprising a display region and a non-display region surrounding the display region, wherein each of the substrates includes a plurality of corners;

a sealing member formed between the non-display regions of the upper and lower substrates, wherein the sealing member comprises a first region and a second region and wherein the second region is located adjacent to the corners of the substrates;

a plurality of sensing patterns formed in the display region of the upper substrate;

a plurality of sensing lines formed in the non-display region of the upper substrate and respectively electrically connected to the sensing patterns, wherein the sensing lines at least partially overlap the sealing member adjacent to a plurality of sides of the substrates;

a plurality of pixels formed in the display region of the lower substrate;

an electrode formed over substantially the entire display region of the lower substrate and electrically connected to each of the pixels;

at least one power line formed in the non-display region of the lower substrate; and

a first connection electrode electrically connecting the power line to an end portion of the electrode,

wherein each of i) the power line, ii) the end portion of the electrode, and iii) the first connection electrode at least partially overlaps the first region and does not overlap the second region,

wherein the end portion of the electrode extends to the non-display regions of the upper and lower substrates, and

wherein a corner portion of the end portion of the electrode has a concave shape formed towards the display region so as to not overlap the second region of the sealing member.

2. The touch screen display as claimed in claim 1, wherein the first region has a substantially linear shape and wherein the second region has a substantially L or reverse L-shape.

3. The touch screen display as claimed in claim 1, further comprising a second connection electrode electrically connecting the power line to the end portion of the electrode, wherein the second connection electrode has a concave shape formed towards the display region so as to not overlap the second region of the sealing member.

4. The touch screen display as claimed in claim 1, wherein each pixel comprises an organic light-emitting diode (OLED) and wherein the electrode is a cathode electrode of each OLED.

5. The touch screen display as claimed in claim 4, wherein the power line is configured to apply a low potential voltage to each of the OLEDs.

6. The touch screen display as claimed in claim 1, wherein the sensing patterns comprise:

a plurality of first sensing cells electrically connected to each other to form a plurality of rows in a first direction;

a plurality of first connection lines electrically connecting the first sensing cells in the first direction;

a plurality of second sensing cells electrically connected to each other to form a plurality of columns in a second direction crossing the first direction; and

a plurality of second connection lines electrically connecting the second sensing cells in the second direction.

7. The touch screen display as claimed in claim 6, wherein the first and second sensing patterns are formed on the same layer.

8. The touch screen display as claimed in claim 7, wherein the second sensing cells are integrally formed with the second connection lines.

9. The touch screen display as claimed in claim 8, further comprising an insulating layer interposed between the first and second connection lines.

10. The touch screen display as claimed in claim 6, wherein the sensing patterns are formed on an outer surface of the upper substrate.

11. The touch screen display as claimed in claim 4, wherein the upper substrate comprises an encapsulation substrate substantially sealing the OLEDs.

12. A display device, comprising:

a substrate comprising a display region and a non-display region surrounding the display region, wherein the substrate has a plurality of corners;

a sealing member formed in the non-display region, wherein the sealing member comprises a first region and a second region and wherein the second region is located adjacent to the corners;

a plurality of pixels formed in the display region;

a plurality of sensing patterns formed over the pixels in the display region;

a plurality of sensing lines formed in the non-display region and respectively electrically connected to the sensing patterns, wherein the sensing lines at least partially overlap the sealing member adjacent to a plurality of sides of the substrate;

an electrode interposed between the pixels and the sensing patterns,

wherein the electrode has a plurality of corners respectively corresponding to the corners of the substrate, and

wherein each of the corners of the electrode has a concave shape formed towards the display region so as to not overlap the second region of the sealing member;

a power line formed in the non-display area and electrically connected to the electrode,

wherein the electrode and the power line each at least partially overlap the first region and do not overlap the second region;

a power source; and

a connection power line formed in the non-display region and electrically connected to the power source and the power line,

wherein the connection power line as a concave shape formed towards the display region so as to not overlap the second region of the sealing member.

13. The display device of claim 12, further comprising a first connection electrode formed in the non-display area and electrically connected to the power line and the electrode, wherein the first connection electrode at least partially overlaps the first region and does not overlap the second region.

14. The display device of claim 13, further comprising a second connection electrode electrically connecting the power line to the electrode, wherein the second connection electrode has a concave shape formed towards the display region so as to not overlap the second region of the sealing member.