IP Library › Granted Patent US 11,635,852
Granted Patent B2
US 11,635,852 · App. 17/684,587 · Granted Apr 25, 2023

Display device and a driving method thereof

Inventor: Soon Gyu Lee (Yongin-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
G06F3/04182G06F3/044G09G3/3225
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Quick Facts
Patent No.
US 11,635,852
App. No.
17/684,587
Granted
Apr 25, 2023
Kind
B2
Abstract

A display device including: a sensor part including sensors; a sensor driver that transmits a sensing signal to p sensors of a first area of the sensor part in a first mode and a sensing signal to q sensors in the first area in a second mode; and a display driver that transmits a light emitting signal to pixels for the pixels to have s non-light emitting periods during one frame period in the first mode, and the light emitting signal to the pixels for the pixels have t non-light emitting periods during the one frame period in the second mode, wherein p is an integer larger than 0, q is an integer larger than p, s and t are integers larger than 1, and a sum of lengths of the t non-light emitting periods is larger than a sum of lengths of the s non-light emitting periods.

Claims (57)

1. A display device, comprising:

a sensor part including sensors;

a sensor driver that transmits a sensing signal to a first area of the sensor part in units of p sensors in a first mode, and transmits a sensing signal to the first area in units of q sensors in a second mode;

a display part overlapping the sensor part and including pixels; and

a display driver that transmits a light emitting signal to the pixels so that the pixels have s non-light emitting periods during one frame period in the first mode, and transmits the light emitting signal to the pixels so that the pixels have t non-light emitting periods during the one frame period in the second mode,

wherein p is an integer larger than 0,

q is an integer larger than p,

s and t are integers larger than 1, and

a sum of lengths of the t non-light emitting periods is larger than a sum of lengths of the s non-light emitting periods.

2. The display device of claim 1 , wherein

t and s are the same.

3. The display device of claim 2 , wherein

each of the t non-light emitting periods is longer than each of the s non-light emitting periods.

4. The display device of claim 2 , wherein

the number of sensing signals transmitted to a first sensor in the first area during the one frame period in the first mode is the same as the number of sensing signals transmitted to the first sensor during the one frame period in the second mode.

5. The display device of claim 4 , wherein

in the second mode, a weight value applied to sampling signals received during the t non-light emitting periods is larger than a weight value applied to sampling signals received during light emitting periods.

6. The display device of claim 2 , wherein

the number of sensing signals transmitted to a first sensor in the first area during the one frame period in the first mode is smaller than the number of sensing signals transmitted to the first sensor during the one frame period in the second mode.

7. The display device of claim 6 , wherein

in the second mode, the number of sensing signals transmitted per unit time in the t non-light emitting periods is larger than the number of sensing signals transmitted per unit time in light emitting periods.

8. The display device of claim 2 , wherein

the sensor driver transmits sensing signals to a first sensor in the first area in the second mode during the t non-light emitting periods, and does not transmit the sensing signals to the first sensor in the first area in the second mode during light emitting periods.

9. The display device of claim 8 , wherein

the number of sensing signals transmitted to a first sensor in the first area during the one frame period in the first mode is larger than the number of sensing signals transmitted to the first sensor during the one frame period in the second mode.

10. The display device of claim 1 , wherein

t is larger than s.

11. The display device of claim 10 , wherein

the number of sensing signals transmitted to a first sensor in the first area during the one frame period in the first mode is the same as the number of sensing signals transmitted to the first sensor during the one frame period in the second mode.

12. The display device of claim 11 , wherein

in the second mode, a weight value applied to sampling signals received during the t non-light emitting periods is larger than a weight value applied to sampling signals received during light emitting periods.

13. The display device of claim 10 , wherein

the number of sensing signals transmitted to a first sensor in the first area during the one frame period in the first mode is smaller than the number of sensing signals transmitted to the first sensor during the one frame period in the second mode.

14. The display device of claim 13 , wherein

in the second mode, the number of sensing signals transmitted per unit time in the t non-light emitting periods is larger than the number of sensing signals transmitted per unit time in light emitting periods.

15. The display device of claim 10 , wherein

the sensor driver transmits sensing signals to a first sensor in the first area in the second mode during the t non-light emitting periods, and does not transmit the sensing signals to the first sensor in the first area in the second mode during light emitting periods.

16. The display device of claim 15 , wherein

the number of sensing signals transmitted to a first sensor in the first area during the one frame period in the first mode is larger than the number of sensing signals transmitted to the first sensor during the one frame period in the second mode.

17. The display device of claim 10 , wherein

a u-th non-light emitting period of the t non-light emitting periods during a first frame period in the second mode is longer than other non-light emitting periods,

a v-th non-light emitting period of the t non-light emitting periods during a second frame period after the first frame period in the second mode is longer than other non-light emitting periods, and

u and the v are larger than 0 and are different integers.

18. A driving method of a display device, comprising:

transmitting a sensing signal to a first area of a sensor part in units of p sensors in a first mode;

transmitting a light emitting signal to pixels so that the pixels have s non-light emitting periods during one frame period in the first mode;

transmitting a sensing signal to the first area in units of q sensors in a second mode; and

transmitting the light emitting signal to the pixels so that the pixels have t non-light emitting periods during the one frame period in the second mode,

wherein p is an integer larger than 0,

q is an integer larger than p,

s and t are integers larger than 1, and

a sum of lengths of the t non-light emitting periods is larger than a sum of lengths of the s non-light emitting periods.

19. The driving method of the display device of claim 18 , wherein

t and s are the same, and

each of the t non-light emitting periods is longer than each of the s non-light emitting periods.

20. The driving method of the display device of claim 18 , wherein

t is larger than s.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 2, 2022
From: LEE, SOON GYU
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 059145/0516 →
Priority Claims (1)
KR 10-2021-0079006 · Jun 17, 2021 · national
Continuity (1)
Related Publication 20220404944A1 · Dec 22, 2022
Cited By (1)
US 12,548,515