IP Library › Granted Patent US 11,322,574
Granted Patent B2
US 11,322,574 · App. 17/043,945 · Granted May 3, 2022

Display device

Inventors: Takehiko Kawamura (Sakai, JP); Junichi Yamada (Sakai, JP); Makoto Yokoyama (Sakai, JP)
Assignee: SHARP KABUSHIKI KAISHA
H01L27/3276G09G3/3648H01L51/0097H01L2251/5338
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Quick Facts
Patent No.
US 11,322,574
App. No.
17/043,945
Granted
May 3, 2022
Kind
B2
Abstract

A display device including: a driver outside a display area; a special-shape portion on an edge of the display area, the special-shape portion being shaped like a line that is curved or oblique to an extension direction of signal lines in the display area; a plurality of first-type circuit blocks outside the special-shape portion, each of the first-type circuit blocks including a unit circuit for the driver in a rectangular region having a first side parallel to the extension direction and a second side perpendicular to, and shorter than, the first side; and a plurality of second-type circuit blocks outside the special-shape portion, each of the second-type circuit blocks including a unit circuit for the driver in a rectangular region obtained by rotating the previous rectangular region by 90°.

Claims (40)

1. A display device comprising:

a driver outside a display area;

a special-shape portion on an edge of the display area, the special-shape portion being shaped like a line that is curved or oblique to an extension direction of signal lines in the display area;

a plurality of first-type circuit blocks outside the special-shape portion, each of the first-type circuit blocks including a unit circuit in the driver in a rectangular region having a first side parallel to the extension direction and a second side perpendicular to, and shorter than, the first side; and

a plurality of second-type circuit blocks outside the special-shape portion, each of the second-type circuit blocks including a unit circuit for the driver in a rectangular region obtained by rotating the previous rectangular region by 90°.

2. The display device according to claim 1 , wherein

the unit circuits include a plurality of circuit elements, and

the circuit elements in the second-type circuit blocks have a layout obtained by rotating by 90° a layout of the circuit elements in the first-type circuit blocks.

3. The display device according to claim 1 , further comprising, along the special-shape portion:

circuit units each including the first-type circuit blocks arranged next to each other in a direction perpendicular to the extension direction; and

circuit units each including the second-type circuit blocks arranged next to each other in the extension direction.

4. The display device according to claim 3 , wherein

the first-type circuit blocks include either one or both of a clock signal line extending in the direction perpendicular to the extension direction and a power supply line extending in the direction perpendicular to the extension direction, and

the second-type circuit blocks include either one or both of a clock signal line extending in the extension direction and a power supply line extending in the extension direction.

5. The display device according to claim 3 , wherein either the first-type circuit blocks or the second-type circuit blocks are arranged next to each other such that the circuit units have a square periphery.

6. The display device according to claim 3 , wherein those circuit units that are outside an end part of the special-shape portion include a different number of first-type circuit blocks or second-type circuit blocks than does those circuit units that are outside a middle part of the special-shape portion.

7. The display device according to claim 3 , wherein

the special-shape portion is shaped like a curved line,

those circuit units each of which includes N first-type circuit blocks or N second-type circuit blocks are disposed outside a part of the special-shape portion that has a tangent making an acute angle in a prescribed range with respect to the extension direction, and

those circuit units each of which includes M first-type circuit blocks or M second-type circuit blocks are disposed outside a part of the special-shape portion that has a tangent making an acute angle outside the prescribed range with respect to the extension direction, where N and M are integers greater than or equal to 2, and M is greater than N.

8. The display device according to claim 4 , wherein the first-type circuit blocks and the second-type circuit blocks are connected by a connecting line routed like stairs.

9. The display device according to claim 8 , wherein the connecting line transmits a clock signal, a SET signal, a RESET signal, or a power supply voltage.

10. The display device according to claim 4 , further comprising, outside the special-shape portion, a main line shaped like a line that is curved or oblique to the extension direction, wherein the first-type circuit blocks and the second-type circuit blocks are connected to the main line.

11. The display device according to claim 10 , wherein the main line transmits a clock signal or a power supply voltage.

12. The display device according to claim 10 , wherein the first-type circuit blocks and the second-type circuit blocks are connected by a connecting line shaped like a line that is curved or oblique to the extension direction.

13. The display device according to claim 3 , wherein those circuit units each of which includes the first-type circuit blocks and those circuit units each of which includes the second-type circuit blocks are arranged alternately outside a part of the special-shape portion that has a tangent making an acute angle in a prescribed range with respect to the extension direction.

14. The display device according to claim 5 , wherein the circuit units each include six first-type circuit blocks or six second-type circuit blocks arranged next to each other.

15. The display device according to claim 1 , wherein

the unit circuits are for a scan signal line driver, a light-emission signal line driver, or a data signal line driver, and

the signal lines are electrically connected to outputs of the unit circuits.

16. The display device according to claim 15 , wherein the signal lines are scan signal lines electrically connected to outputs of the unit circuits for the scan signal line driver.

17. The display device according to claim 1 , wherein the special-shape portion is shaped like an externally convex, curved line.

18. The display device according to claim 1 , wherein the second-type circuit blocks are obtained by rotating the first-type circuit blocks clockwise or counterclockwise by 90°.

19. The display device according to claim 1 , wherein

the unit circuits each include a flip-flop and an output circuit connected to the flip-flop, and

the rectangular regions each have two parallel sides each specified by a clock signal line or a power supply line and two parallel sides sandwiching the flip-flop and the output circuit.

20. The display device according to claim 1 , further comprising:

light-emitting elements; and

a subpixel circuit connected to the light-emitting elements, wherein

the driver is provided in a same layer as the subpixel circuit.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 30, 2020
From: KAWAMURA, TAKEHIKO; YAMADA, JUNICHI; YOKOYAMA, MAKOTO
To: SHARP KABUSHIKI KAISHA
Reel/Frame 053933/0737 →
Continuity (1)
Related Publication 20210098560A1 · Apr 1, 2021
Cited By (2)
US 12,193,286 US 12,334,006