Display Apparatus

• US 20190131360A1
• Filed: 10/19/2018
• Published: 05/02/2019
• Est. Priority Date: 10/30/2017
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: LEE, Taewon, PARK, Jongchan, UM, Hyunchul, LEE, Jung-Min, KIM, Jiyun
• Granted Patent: US 10,964,761 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2300/0413 Details of dummy pixels or dummy lines in flat panels
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2310/0286 Details of a shift registers arranged for use in a driving circuit
• CPC Class Codes: G09G 2310/0289 Details of voltage level shifters arranged for use in a driving circuit
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 2320/0223 Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 3/3225 using an active matrix
• CPC Class Codes: G09G 3/3233 with pixel circuitry controlling the current through the light-emitting element
• CPC Class Codes: G09G 3/3266 Details of drivers for scan electrodes
• CPC Class Codes: G09G 3/3275 Details of drivers for data electrodes
• 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

Abstract

A display device may include an active area including a first area having a special-form portion and a second area not having a special-form portion and a bezel area including a third area close to the first area and having a special-form portion and a fourth area close to the second area and not having a special-form portion. Furthermore, the display device may include a first power supply electrode positioned in the third area of the bezel area, a semiconductor pattern positioned in the third area of the bezel area and overlapping the first power supply electrode, and a plurality of dummy gate lines positioned between the semiconductor pattern and the first power supply electrode and overlapping the semiconductor pattern to form a first compensation capacitance and overlapping the first power supply electrode to form a second compensation capacitance.

Claims

1. A display device comprising an active area comprising a first area having a special-form portion and a second area not having a special-form portion and a bezel area comprising a third area close to the first area and having a special-form portion and a fourth area close to the second area and not having a special-form portion, the display device comprising:

a first power supply electrode positioned in the third area of the bezel area;

a semiconductor pattern positioned in the third area of the bezel area and overlapping the first power supply electrode; and

a plurality of dummy gate lines positioned between the semiconductor pattern and the first power supply electrode and overlapping the semiconductor pattern to form a first compensation capacitance and overlapping the first power supply electrode to form a second compensation capacitance.

2. The display device of claim 1, wherein:

the semiconductor pattern is connected to the first power supply electrode, and

the plurality of dummy gate lines are connected to a plurality of gate lines of the active area, respectively.

3. The display device of claim 1, wherein the semiconductor pattern comprises a conductive semiconductor pattern.

4. The display device of claim 2, wherein:

the first area of the active area comprises a first sub-area having a round portion and a notch portion formed by removing one side of the active area and a second sub-area having only a round portion, and

the third area of the bezel area comprises a first sub area close to the first sub-area of the first area, and a second sub-area close to the second sub-area of the first area.

5. The display device of claim 4, wherein the first sub-area of the first area having the notch portion comprises first and second sub-active areas split in left and right by the notch portion.

6. The display device of claim 5, wherein the plurality of gate lines comprises:

a first and a second gate line disposed in an area close to the first sub-area of the third area of the bezel area in the first sub-active area and the second sub-active area; and

a third and a fourth gate line disposed in an area close to the second area of the active area in the first sub-active area and the second sub-active area.

7. The display device of claim 6, wherein the first, second, third, and fourth gate lines comprise:

a first, a second, a third, and a fourth gate line disposed in the first sub-active area; and

a first, a second, a third, and a fourth gate line disposed in the second sub-active area.

8. The display device of claim 7, wherein the plurality of dummy gate lines comprises:

a first and a second dummy gate line disposed in the first sub-area of the third area of the bezel area adjacent to the first sub-active area; and

a first and a second dummy gate line disposed in the first sub-area of the third area of the bezel area adjacent to the second sub-active area,

wherein the first and second dummy gate line are connected to the first and second gate line of the first sub-active area, respectively, and the first and second dummy gate line are connected to the first and second gate lines of the second sub-active area, respectively.

9. The display device of claim 8, wherein:

the plurality of dummy gate lines further comprises a third and a fourth dummy gate lines disposed in the first sub-area of the third area of the bezel area and positioned between the first sub-active area and the second sub-active area,

the third gate line positioned in the first sub-active area and the third gate line positioned in the second sub-active area are connected by the third dummy gate line, and

the fourth gate line positioned in the first sub-active area and the fourth gate line positioned in the second sub-active area are connected by the fourth dummy gate line.

10. The display device of claim 1, further comprising a first opening part formed by removing a portion of the semiconductor pattern overlapping the plurality of dummy gate lines.

11. The display device of claim 10, further comprising a second opening part formed by removing a portion of the first power supply electrode overlapping the plurality of dummy gate lines, wherein the second opening part does not overlap the first opening part.

12. The display device of claim 2, wherein:

the semiconductor pattern is positioned on a substrate,

the plurality of gate lines is positioned on a gate insulating film positioned to cover the semiconductor pattern,

the plurality of dummy gate lines is positioned on a first interlayer dielectric layer covering the plurality of gate lines, and

the first power supply electrode is positioned on a second interlayer dielectric layer covering the plurality of dummy gate lines.

13. The display device of claim 12, wherein:

the plurality of dummy gate lines are connected to the plurality of gate lines, respectively, through a contact hole formed in the first interlayer dielectric layer, and

the first power supply electrode is connected to the semiconductor pattern through a contact hole penetrating the second interlayer dielectric layer, the first interlayer dielectric layer, and the gate insulating film.

14. A display device comprising an active area including a first area having a special-form portion and a second area not having a special-form portion and a bezel area including a third area corresponding to the first area and a fourth area corresponding to the second area and positioned to neighbor the active area, the display device comprising;

a first pixel formed in accordance with a first gate line positioned in the first area;

second pixels formed in accordance with a second gate line positioned in the second area and having a number greater than the number of first pixels;

a power supply electrode positioned in the bezel area and supplying power to the first pixels and the second pixels; and

at least one compensation portion for compensating for a load occurring due to a difference in the number of pixels between the first pixels and the second pixels by forming a compensation capacitance through a first compensation pattern connected to the first gate line of the first area in the third area of the bezel area to overlap the power supply electrode with an insulating layer interposed therebetween.

15. The display device of claim 14, wherein the compensation capacitance includes a first compensation capacitance formed through a first compensation pattern connected to the first gate line of the first area in the third area of the bezel area to overlap the power supply electrode with an insulating layer interposed therebetween.

16. The display device of claim 15, wherein the at least one compensation portion includes a second compensation pattern connected to the power supply electrode and overlapping the first compensation pattern, and wherein the compensation capacitance further includes a second compensation capacitance formed between the second compensation pattern and the first compensation pattern.

17. The display device of claim 16, wherein the first compensation pattern is positioned between the power supply electrode and the second compensation pattern to form the first compensation capacitance along with the power supply electrode and to form the second compensation capacitance along with the second compensation pattern.

18. The display device of claim 16, further comprising a first opening part formed by removing a portion of the second compensation pattern overlapping the first compensation pattern.

19. The display device of claim 18, further comprising a second opening part formed by removing a portion of the power supply electrode overlapping the first compensation pattern, and wherein the second opening part does not overlap the first opening part.