# US 9,437,830 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,437,830 B2 - Document ID: US9437830B2 - Status: Granted - Kind: B2 - Application number: 14/158,565 - Filed: 2014-01-17 - Published: 2015-02-12 - Granted: 2016-09-06 - Earliest claimed: 2013-08-12 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Tae Woong Kim; Hyun Woo Koo; Young Gug Seol - Web page: https://patentgrep.com/patent/US9437830B2 ## CPC - H10K 77/111: {Flexible substrates} - H10D 86/443: {adapted for preventing breakage, peeling or short circuiting} - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/124: Insulating layers formed between TFT elements and OLED elements - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H05K 1/0277: {Bendability or stretchability details (H05K1/038, H05K3/4691 take precedence)} - H10K 2102/311: {Flexible OLED} - Y02E 10/549: Organic PV cells - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A display device is disclosed. In one aspect, the display device includes a flexible substrate capable of being bent in a first direction and an insulating layer including a first opening pattern positioned on the flexible substrate and extending in a second direction crossing the first direction. ## Claims ### Claim 1 A display device, comprising: a flexible substrate configured to be bent in a first direction; and an insulating layer formed over the flexible substrate, wherein the insulating layer includes a first opening pattern extending in a second direction crossing the first direction, and wherein the first opening pattern comprises a plurality of first sub-opening patterns. ### Claim 2 (depends on 1) The display device of claim 1, wherein the plurality of first sub-opening patterns are spaced apart from each other in the first direction. ### Claim 3 (depends on 2) The display device of claim 2, further comprising a plurality of pixels formed over the flexible substrate, wherein the first sub-opening patterns are formed between adjacent pixels. ### Claim 4 (depends on 3) The display device of claim 3, wherein each pixel comprises: an organic light-emitting diode (OLED) formed over the flexible substrate; a first thin film transistor electrically connected to the OLED; and at least one second thin film transistor electrically connected to the first thin film transistor. ### Claim 5 (depends on 4) The display device of claim 4, wherein the OLED comprises: a first electrode electrically connected to the first thin film transistor; an organic light emission layer formed over the first electrode; and a second electrode formed over the organic light emission layer. ### Claim 6 (depends on 4) The display device of claim 4, wherein the first thin film transistor comprises: a first active layer formed over the flexible substrate; a first gate electrode formed over the first active layer; and a first source electrode and a first drain electrode, each electrically connected to the first active layer. ### Claim 7 (depends on 6) The display device of claim 6, further comprising: a first scan line formed over the flexible substrate and extending in the second direction; a second scan line formed over the flexible substrate and extending in the second direction, wherein the second scan line is spaced apart from the first scan line; an initialization power line formed over the flexible substrate and extending in the second direction, wherein the initialization power line is spaced apart from the first and second scan lines; a light emission control line formed over the flexible substrate and extending in the second direction, wherein the light emission control line is spaced apart from the initialization power line; a data line formed over the flexible substrate and extending in the first direction; and a driving power line formed over the flexible substrate and extending in the first direction, wherein the driving power line is spaced apart from the data line. ### Claim 8 (depends on 7) The display device of claim 7, wherein the second thin film transistor comprises: a second thin film transistor including a second gate electrode electrically connected to the first scan line and configured to electrically connect the data line to the first thin film transistor; a third thin film transistor including a third gate electrode electrically connected to the first scan line and configured to electrically connect the first drain electrode to the first gate electrode; a fourth thin film transistor including a fourth gate electrode electrically connected to the second scan line and configured to electrically connect the initialization power line to the first gate electrode; a fifth thin film transistor including a fifth gate electrode electrically connected to the light emission control line and configured to electrically connect the driving power line to the first thin film transistor; and a sixth thin film transistor including a sixth gate electrode electrically connected to the light emission control line and configured to electrically connect the first thin film transistor to the OLED. ### Claim 9 (depends on 6) The display device of claim 6, wherein the insulating layer further includes a first sub-insulating layer formed between the flexible substrate and the first active layer. ### Claim 10 (depends on 9) The display device of claim 9, wherein the first opening pattern is formed in the first sub-insulating layer. ### Claim 11 (depends on 9) The display device of claim 9, wherein the insulating layer further includes a second sub-insulating layer covering the first active layer. ### Claim 12 (depends on 11) The display device of claim 11, wherein the first opening pattern is formed in the second sub-insulating layer. ### Claim 13 (depends on 11) The display device of claim 11, wherein the first opening pattern is formed in the first and second sub-insulating layers. ### Claim 14 (depends on 11) The display device of claim 11, wherein the insulating layer further includes a third sub-insulating layer covering the first gate electrode. ### Claim 15 (depends on 14) The display device of claim 14, wherein the first opening pattern is formed in the third sub-insulating layer. ### Claim 16 (depends on 14) The display device of claim 14, wherein the first opening pattern is formed in the second and third sub-insulating layers. ### Claim 17 (depends on 14) The display device of claim 14, wherein the first opening pattern is formed in the first, second, and third sub-insulating layers. ### Claim 18 (depends on 3) The display device of claim 3, wherein the pixel has a substantially rectangular shape and wherein the second direction is substantially parallel to a long side of the pixel. ### Claim 19 (depends on 3) The display device of claim 3, wherein the pixel has a substantially rectangular shape and wherein the second direction is substantially parallel to a short side of the pixel. ### Claim 20 (depends on 1) The display device of claim 1, wherein the insulating layer further includes a second opening pattern extending in the first direction and crossing the first opening pattern and wherein the flexible substrate is configured to be bent in the second direction. ### Claim 21 (depends on 20) The display device of claim 20, wherein the first opening pattern comprises a plurality of first sub-opening patterns, wherein the second opening pattern comprises a plurality of second sub-opening patterns, wherein the first sub-opening patterns are spaced apart from each other in the first direction, and wherein the second sub-opening patterns are spaced apart from each other in the second direction. ### Claim 22 (depends on 21) The display device of claim 21, wherein the first and second sub-opening patterns form a substantially mesh shape. ### Claim 23 (depends on 21) The display device of claim 21, further comprising a plurality of pixels formed over the flexible substrate, wherein each of the pixels is surrounded by intersections between the first and second opening patterns. ### Claim 24 (depends on 1) The display device of claim 1, wherein the flexible substrate has a substantially rectangular shape and wherein the first direction is substantially parallel to a long side or a short side of the flexible substrate. ### Claim 25 (depends on 1) The display device of claim 1, wherein the insulating layer is formed of an inorganic material. ### Claim 26 (depends on 25) The display device of claim 25, wherein the inorganic material comprises a nitride or an oxide. ### Claim 27 (depends on 1) The display device of claim 1, wherein the insulating layer is formed of an organic material. ### Claim 28 (depends on 27) The display device of claim 27, wherein the organic material comprises phenylene or siloxane. ### Claim 29 (depends on 1) The display device of claim 1, wherein the display device is an organic light-emitting diode (OLED) display. ### Claim 30 A display device, comprising: a flexible substrate configured to be bent in a first direction; an insulating layer formed over the flexible substrate, wherein the insulating layer includes an opening pattern extending in a second direction crossing the first direction; and a plurality of pixels formed over the insulating layer, wherein the opening pattern is formed between adjacent pixels. ### Claim 31 (depends on 30) The display device of claim 30, wherein the insulating layer further includes a plurality of sub-insulating layers and wherein the opening pattern is formed in at least one sub-insulating layer.