DISPLAY DEVICE USING SEMICONDUCTOR LIGHT EMITTING DIODE

• US 20160342233A1
• Filed: 05/09/2016
• Published: 11/24/2016
• Est. Priority Date: 05/21/2015
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Soobeom, LEE, Yonghan
• Application Number:
  US15/149,516
• Publication Number:
  US 20160342233A1
• Time in Patent Office: 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 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04109 FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location
• CPC Class Codes: G06F 3/04184 Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G09G 3/3622 using a passive matrix G09G3/3674 - G09G3/3696 take precedence
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A display device including a display unit including a plurality of semiconductor light emitting diodes electrically-connected to a plurality of scan lines; a touch sensor including a plurality of sensing regions, and overlapping the plurality of semiconductor light emitting diodes; and a controller configured to sequentially supply a current to a predetermined number of scan lines among the plurality of scan lines, and turn on predetermined semiconductor light emitting diodes electrically-connected to the predetermined number of scan lines, sense a touch input on a second sensing region not overlapped with the turned-on predetermined semiconductor light emitting diodes, and not sense the touch input on a first sensing region overlapped with the turned-on predetermined semiconductor light emitting diodes.

Claims

1. A display device, comprising:

a display unit including a plurality of semiconductor light emitting diodes electrically-connected to a plurality of scan lines;

a touch sensor including a plurality of sensing regions, and overlapping the plurality of semiconductor light emitting diodes; and

a controller configured to;

sequentially supply a current to a predetermined number of scan lines among the plurality of scan lines, and turn on predetermined semiconductor light emitting diodes electrically-connected to the predetermined number of scan lines,

sense a touch input on a second sensing region not overlapped with the turned-on predetermined semiconductor light emitting diodes, and

not sense the touch input on a first sensing region overlapped with the turned-on predetermined semiconductor light emitting diodes.

2. The display device of claim 1, wherein the controller is further configured to turn off the touch sensor included in the first sensing region.

3. The display device of claim 2, wherein the controller is further configured to turn on the touch sensor included in the first sensing region when the predetermined semiconductor light emitting diodes are turned off.

4. The display device of claim 1, wherein the touch input is applied to at least one sensing region different from the first sensing region.

5. The display device of claim 4, wherein the controller is further configured not to process the touch input by a touch object onto the first sensing region, while the predetermined semiconductor light emitting diodes are turned on.

6. The display device of claim 1, wherein the first sensing region overlaps first and second scan lines, the second sensing region overlaps third and fourth scan lines, a third sensing region overlaps fifth and sixth scan lines, and a fourth sensing region overlaps seventh and eight scan lines.

7. The display device of claim 6, wherein the controller is further configured to sense the touch input on the second sensing region when the current is applied to the first or second scan lines.

8. The display device of claim 6, wherein the controller is further configured to sense the touch input on the fourth sensing region when the current is applied to the third or fourth scan lines.

9. The display device of claim 6, wherein the controller is further configured to sense the touch input on the first sensing region when the current is applied to the fifth or sixth scan lines.

10. The display device of claim 6, wherein the controller is further configured to sense the touch input on the second sensing region when the current is applied to the seventh or eighth scan lines.

11. The display device of claim 1, further comprising:

data lines crossing the plurality of scan lines.

12. The display device of claim 6, wherein the controller is further configured to turn off the first sensing region, the second sensing region, and the fourth sensing region and turn on the third sensing region while the current is supplied to the first and second scan lines.

13. The display device of claim 12, wherein the controller is further configured to turn off the first sensing region, the second sensing region, and the third sensing region and turn on the fourth sensing region while the current is supplied to the third and fourth scan lines.

14. The display device of claim 13, wherein the controller is further configured to turn off the second sensing region, the third sensing region, and the fourth sensing region and turn on the first sensing region while the current is supplied to the fifth and sixth scan lines.

15. The display device of claim 14, wherein the controller is further configured to turn off the first sensing region, the third sensing region, and the fourth sensing region and turn on the second sensing region while the current is supplied to the seventh and eight scan lines.

16. The display device of claim 1, wherein the plurality of scan lines are spaced apart from each other by a predetermined distance.

17. The display device of claim 1, wherein the display device comprises a flexible display.

18. The display device of claim 1, wherein the controller is further configured to sequentially supply the current to the plurality of scan lines in unit of each frame.

19. The display device of claim 6, wherein touch sensors included in the sensing regions are sequentially turned on in unit of each sensing region.

20. The display device of claim 6, wherein the second sensing region is adjacent to the first sensing region, the third sensing region is adjacent to the second sensing region, and the fourth sensing region is adjacent to the third sensing region.