DISPLAY DEVICE

• US 20190326274A1
• Filed: 01/30/2019
• Published: 10/24/2019
• Est. Priority Date: 04/20/2018
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: LEE, Dae Geun, LEE, Kyung Mok, CHOI, Suk Ho
• Granted Patent: US 10,964,680 B2
• Time in Patent Office: Days
• CPC Class Codes: H01L 2224/13013 being rectangular or square
• CPC Class Codes: H01L 2224/13023 the whole bump connector protruding from the surface
• CPC Class Codes: H01L 2224/13099 Material
• CPC Class Codes: H01L 2224/14151 being uniform, i.e. having a uniform pitch across the array
• CPC Class Codes: H01L 2224/14517 including bump connectors providing primarily mechanical bonding
• CPC Class Codes: H01L 2224/16145 the bodies being stacked
• CPC Class Codes: H01L 2224/17152 being non uniform, i.e. having a non uniform pitch across the array
• CPC Class Codes: H01L 2224/17517 including bump connectors providing primarily mechanical support
• CPC Class Codes: H01L 2224/32145 the bodies being stacked
• CPC Class Codes: H01L 2224/73204 the bump connector being embedded into the layer connector
• CPC Class Codes: H01L 2224/81 using a bump connector
• CPC Class Codes: H01L 2224/81203 Thermocompression bonding, e.g. diffusion bonding, pressure joining, thermocompression welding or solid-state welding
• CPC Class Codes: H01L 2224/81903 by means of a layer connector
• CPC Class Codes: H01L 2224/83 using a layer connector
• CPC Class Codes: H01L 2224/83203 Thermocompression bonding, e.g. diffusion bonding, pressure joining, thermocompression welding or solid-state welding
• CPC Class Codes: H01L 2224/83851 being an anisotropic conductive adhesive
• CPC Class Codes: H01L 2224/9211 Parallel connecting processes
• CPC Class Codes: H01L 23/562 Protection against mechanical damage H01L23/02, H01L23/28 take precedence
• CPC Class Codes: H01L 24/14 of a plurality of bump connectors
• CPC Class Codes: H01L 24/16 of an individual bump connector
• CPC Class Codes: H01L 24/17 : of a plurality of bump connectors
• CPC Class Codes: H01L 24/32 : of an individual layer connector
• CPC Class Codes: H01L 24/73 : Means for bonding being of different types provided for in two or more of groups H01L24/10, H01L24/18, H01L24/26, H01L24/34, H01L24/42, H01L24/50, H01L24/63, H01L24/71
• CPC Class Codes: H01L 24/81 : using a bump connector
• CPC Class Codes: H01L 24/83 : using a layer connector
• CPC Class Codes: H01L 24/92 : Specific sequence of method steps
• CPC Class Codes: H01L 25/04 : the devices not having separate containers
• CPC Class Codes: H01L 25/18 : the devices being of types provided for in two or more different subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
• CPC Class Codes: H01L 2924/00 : Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 : the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/1426 : Driver
• CPC Class Codes: H01L 2924/351 : Thermal stress
• CPC Class Codes: H10K 2102/311 : Flexible OLED
• CPC Class Codes: H10K 2102/351 : Thickness
• CPC Class Codes: H10K 59/131 : Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/88 : Dummy elements, i.e. elements having non-functional features
• CPC Class Codes: H10K 77/111 : Flexible substrates
• CPC Class Codes: Y02E 10/549 : Organic PV cells

Abstract

The display device includes a flexible base layer including a first region and a second region located around the first; a display unit on one surface of the first region and including a light emitting element; a driving circuit on the second region and including a plurality of first bumps arranged in a first row and a plurality of second bumps arranged in a second row, the driving circuit includes a third bump in the first row and disposed outward relative to the plurality of first bumps, a first and second reference bump each disposed at a center of the plurality of first and second bumps that are disposed along a reference line defined in a column direction vertically intersecting a row direction, the remaining first and second bumps excluding the first reference bump and the second reference bump arranged to have a preset slope with respect to the reference line.

Claims

1. A display device, comprising:

a flexible base layer including a first region and a second region located around the first region;

a display unit disposed on one surface of the first region and including a light emitting element; and

a driving circuit disposed on the second region and including a plurality of first bumps arranged in a first row and a plurality of second bumps arranged in a second row,

wherein the driving circuit includes a third bump disposed in the first row and disposed outward relative to the plurality of first bumps,

a first reference bump and a second reference bump each disposed at a center of the plurality of first and second bumps are disposed along a reference line defined in a column direction vertically intersecting a row direction, and

the remaining first and second bumps excluding the first reference bump and the second reference bump are arranged to have a preset slope with respect to the reference line.

2. The display device of claim 1,

wherein the plurality of first bumps includes a plurality of eleventh bumps arranged at a left side of the first reference bump and a plurality of twelfth bumps arranged at a right side of the first reference bump, and

the plurality of eleventh bumps are arranged to form an acute angle in a clockwise direction with respect to the reference line, and the plurality of twelfth bumps are arranged to form an acute angle in a counterclockwise direction with respect to the reference line.

3. The display device of claim 2,

wherein a shortest distance from an end of the flexible base layer to the first bump is greater than a shortest distance from the end of the flexible base layer to the second bump.

4. The display device of claim 3,

wherein the third bump is disposed between the end of the flexible base layer and the first bump.

5. The display device of claim 2,

wherein a shortest distance from an end of the flexible base layer to the third bump is equal to a shortest distance from the end of the flexible base layer to the second bump.

6. The display device of claim 2,

wherein a difference between a shortest distance from an end of the flexible base layer to the third bump and a shortest distance from the end of the flexible base layer to the second bump is about 30 μ

m or less.

7. The display device of claim 2,

wherein a thickness of the first bump is equal to a thickness of the third bump.

8. The display device of claim 7,

wherein the thickness of the first bump is greater than the thickness of the third bump.

9. The display device of claim 2,

wherein the plurality of first bumps and the plurality of second bumps are output bumps configured to output a driving signal for driving the display unit.

10. The display device of claim 9,

wherein the third bump is an output bump configured to output a driving signal for driving the display unit.

11. The display device of claim 9,

wherein the third bump is a dummy bump.

12. The display device of claim 1,

wherein the driving circuit includes a plurality of third bumps and a fourth bump arranged in a third row, and the fourth bump is disposed between an end of the flexible base layer and the plurality of third bumps.

13. The display device of claim 12,

wherein the third bump is an input bump configured to receive a signal from the outside.

14. A display device, comprising:

a flexible base layer including a first region and a second region located around the first region;

a display unit disposed on one surface of the first region and including a light emitting element; and

a driving circuit disposed on the second region and including a plurality of first bumps arranged in a first row and a plurality of second bumps arranged in a second row,

wherein the number of the plurality of first bumps is greater than the number of the plurality of second bumps,

a first reference bump and a second reference bump each disposed at a center of the plurality of first and second bumps are disposed along a reference line defined in a column direction vertically intersecting a row direction, and

the remaining first and second bumps excluding the first reference bump and the second reference bump are arranged to have a preset slope with respect to the reference line.

15. The display device of claim 14,

wherein the plurality of first bumps are disposed adjacent to the display unit relative to the plurality of second bumps.

16. The display device of claim 15,

wherein the plurality of first bumps includes a plurality of eleventh bumps arranged at a left side of the first reference bump and a plurality of twelfth bumps arranged at a right side of the first reference bump, and

the plurality of eleventh bumps are arranged to form an acute angle in a clockwise direction with respect to the reference line, and the plurality of twelfth bumps are arranged to form an acute angle in a counterclockwise direction with respect to the reference line.

17. The display device of claim 16,

wherein a shortest distance from an end of the flexible base layer to the first bump is equal to a shortest distance from the end of the flexible base layer to the second bump.

18. The display device of claim 16,

wherein a difference between a shortest distance from an end of the flexible base layer to the third bump and a shortest distance from the end of the flexible base layer to the second bump is about 30 μ

m or less.

19. The display device of claim 14,

wherein the plurality of second bumps is disposed adjacent to the display unit relative to the plurality of first bumps.

20. The display device of claim 19,

wherein the plurality of first bumps includes a plurality of eleventh bumps arranged at a left side of the first reference bump and a plurality of twelfth bumps arranged at a right side of the first reference bump, and

the plurality of eleventh bumps are arranged to form an obtuse angle in a clockwise direction with respect to the reference line, and the plurality of twelfth bumps are arranged to form an obtuse angle in a counterclockwise direction with respect to the reference line.