ClassID:

196127

G09G2310/0267 - page 4 - CPC Classification

Classification description:

Command of the display device; Addressing, scanning or driving the display screen or processing steps related thereto; Details of driving circuits Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays

Recent Application in this class:
#901
20230129625
2023-04-27

Gate driving circuit, method of driving gate driving circuit, and display panel

#902
20230127696
2023-04-27

Drive control method and related device

#903
20230126321
2023-04-27

Display device and method of fabricating the same

#904
20230125979
2023-04-27

Gate driving structure having overlapped signal wiring and capacitor, array substrate and display device

#905
20230124837
2023-04-20

Scanning driving method, scanning driving device, electronic equipment, and storage medium

#906
20230121015
2023-04-20

GATE DRIVING METHOD, GATE DRIVING CIRCUIT AND DISPLAY DEVICE

#907
20230117873
2023-04-20

Display device and driving method thereof

#908
20230117423
2023-04-20

Display panel and display device including the same

#909
20230116413
2023-04-13

GOA circuit and display panel

#910
20230114518
2023-04-13

Input sensing device and display device including the same

#911
20230109819
2023-04-13

Screen saver controller, display device including the screen saver controller, and method of driving a display device including the screen saver controller

#912
20230108865
2023-04-06

Pixel of display device

#913
20230108334
2023-04-06

Level shifter and gate driver including the level shifter

#914
20230106665
2023-04-06

Level conversion circuit, driving circuit for display panel, and display apparatus

#915
20230105490
2023-04-06

Pixel and display device including the same

#916
20230103641
2023-04-06

GOA circuit and display panel

#917
20230103377
2023-04-06

Display substrate, manufacturing method thereof, and display device

#918
20230100545
2023-03-30

GOA circuit and display panel

#919
20230099387
2023-03-30

Pixel circuit that includes a first leakage compensation switching element and display apparatus having the same

#920
20230099015
2023-03-30

Gate driving unit circuit and method of driving the same, gate driving circuit and display apparatus

#921
20230098375
2023-03-30

Gate driving circuit and driving method thereof, display panel and display device

#922
20230096851
2023-03-30

Pixel driving circuit and driving method thereof, light-emitting panel, and display device

#923
20230093654
2023-03-23

Gate driving unit, gate driving method, gate driving circuit and display device

#924
20230093414
2023-03-23

Electronic book

#925
20230092330
2023-03-23

Display device

#926
20230087472
2023-03-23

Pixel circuit, driving method for pixel circuit, and display panel

#927
20230086999
2023-03-23

Gate driving circuit and manufacturing method therefor, array substrate, and display device

#928
20230085261
2023-03-16

Shift register and drive method thereof, and gate drive circuit

#929
20230075783
2023-03-09

Display device

#930
20230075430
2023-03-09

Electronic device including display having plurality of states and method for controlling same

#931
20230073465
2023-03-09

Pixel circuit, pixel driving method and display device

#932
20230071459
2023-03-09

Pixel circuit and display panel

#933
20230067472
2023-03-02

LED matrix driver to reduce bright coupling

#934
20230066949
2023-03-02

Pixel of a display device, and display device

#935
20230064813
2023-03-02

Logic circuit and semiconductor device

#936
20230061360
2023-03-02

Electroluminescent device, and display device comprising thereof

#937
20230058571
2023-02-23

Power management integrated circuit and its driving method

#938
20230043062
2023-02-09

Gate driver circuit and method for driving the same

#939
20230041772
2023-02-09

Light-emitting diode display panel and light-emitting diode display device

#940
20230040741
2023-02-09

DISPLAY DEVICE

#941
20230040620
2023-02-09

Touch display device

#942
20230034489
2023-02-02

Protection circuit for display device and display device comprising same, and method for protecting display device using protection circuit

#943
20230031812
2023-02-02

Display panel and display device

#944
20230024342
2023-01-26

Source driving circuit and operating method thereof

#945
20230022857
2023-01-26

Scan driver

#946
20230022694
2023-01-26

Display device

#947
20230020872
2023-01-19

Method of controlling the transition between different refresh rates on a display device

#948
20230018464
2023-01-19

Display drive IC and display device including the same

#949
20230018432
2023-01-19

Display device

#950
20230017548
2023-01-19

STAGE AND SCAN DRIVER INCLUDING THE SAME

#951
20230015213
2023-01-19

Light-emitting display device

#952
20230012927
2023-01-19

Display apparatus

#953
20230012771
2023-01-19

Display device

#954
20230005418
2023-01-05

Display device

#955
20230005415
2023-01-05

Shift register circuit including denoising control sub-circuit and method for driving same, and gate driving circuit and display apparatus

#956
20220415276
2022-12-29

Shift register, gate drive circuit and drive method thereof

#957
20220415249
2022-12-29

Electroluminescent display panel having pixel driving circuit

#958
20220415234
2022-12-29

SPATIAL DITHERING TECHNOLOGY THAT SUPPORTS DISPLAY SCAN-OUT

#959
20220415232
2022-12-29

DRIVING METHOD AND DRIVING CIRCUIT OF DISPLAY PANEL, AND DISPLAY APPARATUS

#960
20220406268
2022-12-22

Semiconductor device

#961
20220406244
2022-12-22

Shift register and driving method thereof, gate driver and display device

#962
20220406236
2022-12-22

Pixel having reduced number of contact points, and digital driving method

#963
20220406234
2022-12-22

Shifting register, driving method thereof, driving circuit and display device

#964
20220399399
2022-12-15

Light emitting stacked structure and display device having the same

#965
20220392400
2022-12-08

Display device

#966
20220392397
2022-12-08

DISPLAY DEVICE

#967
20220392389
2022-12-08

Display apparatus and method of driving display panel using the same

#968
20220392387
2022-12-08

Data processing device, data driving device and system for driving display device

#969
20220392383
2022-12-08

Display device including multi-chip film package having plurality of gate integrated circuits mounted thereon

#970
20220392382
2022-12-08

Display apparatus and method of driving the same

#971
20220383803
2022-12-01

DISPLAY PANEL, DISPLAY DEVICE INCLUDING DISPLAY PANEL, AND PERSONAL IMMERSIVE SYSTEM USING DISPLAY DEVICE

#972
20220383787
2022-12-01

Display panel, display device and driving method

#973
20220375402
2022-11-24

Display device

#974
20220375390
2022-11-24

Display device and display device driving method

#975
20220375384
2022-11-24

Electronic device comprising display

#976
20220375383
2022-11-24

Shift register, gate driving circuit, display apparatus and driving method

#977
20220375382
2022-11-24

Display panel and display device

#978
20220375381
2022-11-24

Display panel and display device

#979
20220366872
2022-11-17

Wraparound display device

#980
20220366837
2022-11-17

Display panel, detection method thereof and display device

#981
20220366836
2022-11-17

Scan driver

#982
20220366835
2022-11-17

Pixel and display device having the same

#983
20220366830
2022-11-17

Display panel, driving method for same, and display apparatus

#984
20220358872
2022-11-10

Display device and driving method thereof

#985
20220351703
2022-11-03

GAMMA VOLTAGE GENERATING CIRCUIT, SOURCE DRIVER AND DISPLAY DEVICE INCLUDING THE SAME

#986
20220351659
2022-11-03

Display apparatus and method of driving the same

#987
20220351658
2022-11-03

GOA circuit and display panel

#988
20220343824
2022-10-27

Pixel and display device including the same

#989
20220343821
2022-10-27

Gate driving circuit and display panel that alleviate trailing of a falling edge of a signal output terminal

#990
20220335882
2022-10-20

Small size pixel and display device including the same

#991
20220335881
2022-10-20

Display device and driving method thereof

#992
20220335870
2022-10-20

Shift register, gate driving circuit and display panel

#993
20220327990
2022-10-13

Display apparatus and method of driving atypical display panel using the same

#994
20220327989
2022-10-13

Display device and driving method thereof

#995
20220327975
2022-10-13

Shift register circuit, gate driving circuit and display apparatus

#996
20220327973
2022-10-13

Shift register and driving method thereof, gate driving circuit

#997
20220319401
2022-10-06

Pixel driving circuit and driving method therefor, display panel, and display apparatus

#998
20220319386
2022-10-06

Displaying base plate and displaying device

#999
20220319371
2022-10-06

Display device

#1000
20220319370
2022-10-06

GOA circuit and display panel

#1001
20220311397
2022-09-29

Amplifier circuit and display apparatus including the same

#1002
20220310895
2022-09-29

Display device

#1003
20220310662
2022-09-29

Display device and tiled display device including the same

#1004
20220309998
2022-09-29

Display device

#1005
20220309995
2022-09-29

BACKLIGHT CONSTANT CURRENT CONTROL CIRCUIT AND BACKLIGHT STRUCTURE

#1006
20220309989
2022-09-29

GATE DRIVER ON ARRAY DEVICE AND DISPLAY PANEL

#1007
20220309978
2022-09-29

Display apparatuses, gate drive circuits, shift register units and driving methods thereof

#1008
20220309976
2022-09-29

GOA circuit

#1009
20220309975
2022-09-29

Driving circuit and display panel

#1010
20220302175
2022-09-22

DISPLAY DEVICE AND TILED DISPLAY DEVICE INCLUDING THE SAME

#1011
20220301497
2022-09-22

Display panel having narrow bezel and display apparatus thereof

#1012
20220301493
2022-09-22

Display device and tiled display including the same

#1013
20220301484
2022-09-22

Display device

#1014
20220301483
2022-09-22

GOA CIRCUIT AND DISPLAY PANEL

#1015
20220301481
2022-09-22

Display device having compensator that sets grayscale values

#1016
20220301479
2022-09-22

Display device

#1017
20220301474
2022-09-22

Demultiplexer gate driver circuit and display panel

#1018
20220296186
2022-09-22

Flat panel detector, driving method thereof and detection device

#1019
20220293695
2022-09-15

Repair circuit for a display device

#1020
20220293027
2022-09-15

Display system and display device

#1021
20220285433
2022-09-08

Light emitting stacked structure and display device having the same

#1022
20220285332
2022-09-08

Display device

#1023
20220284869
2022-09-08

Display device and electronic device

#1024
20220284850
2022-09-08

Pixel and display apparatus having the same

#1025
20220284849
2022-09-08

Display device and tiled display device including the same

#1026
20220284848
2022-09-08

Display device

#1027
20220284843
2022-09-08

Shift register unit, shift register, display panel and driving method thereof

#1028
20220284842
2022-09-08

Display panel and display device having gate drive circuit

#1029
20220277709
2022-09-01

Display device and image display system having the same

#1030
20220277707
2022-09-01

Display device and method of driving the same

#1031
20220277690
2022-09-01

Display device

#1032
20220277688
2022-09-01

Stage and display device including the same

#1033
20220271083
2022-08-25

Light-emitting device

#1034
20220270542
2022-08-25

Display apparatus

#1035
20220270532
2022-08-25

Shift register in display, gate drive circuit, display device, and driving method for same

#1036
20220270531
2022-08-25

Display driving module, display driving method and display device

#1037
20220262831
2022-08-18

Display panel and display device

#1038
20220262327
2022-08-18

Display device having uniform luminance, and driving method thereof

#1039
20220262299
2022-08-18

Optical compensation system and optical compensation method of display device

#1040
20220262296
2022-08-18

Display device and driving method thereof

#1041
20220262295
2022-08-18

Display device using rewrite image data dependent on an initialization voltage during a vertical blank period

#1042
20220254318
2022-08-11

Screen saver controller, display device including the screen saver controller, and method of driving a display device including the screen saver controller

#1043
20220254310
2022-08-11

Gate driving circuit and display device having the same

#1044
20220254291
2022-08-11

Display panel and display device

#1045
20220246104
2022-08-04

Bidirectional shift register performing shift action based on clock signals and display device provided with same

#1046
20220246087
2022-08-04

Pixel and display apparatus having the same

#1047
20220246086
2022-08-04

Display device

#1048
20220246074
2022-08-04

Driving backplane, display panel and display device

#1049
20220238054
2022-07-28

Driving system for driving a scan-type display

#1050
20220223103
2022-07-14

METHODS, APPARATUS, AND ARTICLES OF MANUFACTURE TO CONTROL A MICRO-LED DISPLAY

#1051
20220223099
2022-07-14

Light emitting device array circuit capable of reducing ghost image and driver circuit and control method thereof

#1052
20220223082
2022-07-14

Display driving circuit, display device including the same, and method of driving display device

#1053
20220216265
2022-07-07

LIGHT-EMITTING MODULE AND DISPLAY APPARATUS

#1054
20220216242
2022-07-07

SHIFT REGISTER AND DISPLAY DEVICE AND DRIVING METHOD THEREOF

#1055
20220215789
2022-07-07

Display device and method of driving the same

#1056
20220208079
2022-06-30

Gate driver including dummy output buffer and display device including same

#1057
20220208075
2022-06-30

Gate driving circuit and electroluminescent display device using the same

#1058
20220208074
2022-06-30

Gate driving circuit and electroluminescent display device using the same

#1059
20220208072
2022-06-30

Shift register circuit, display panel and display device

#1060
20220208062
2022-06-30

GATE DRIVER AND DISPLAY PANEL HAVING THE SAME

#1061
20220208059
2022-06-30

Gate driving circuit and display device including the gate driving circuit

#1062
20220208029
2022-06-30

Flexible display device having a flexible display panel which is deformed based on display data stored before deformation occurs

#1063
20220206664
2022-06-30

Gate driver having a plurality of start circuits and display device including the same

#1064
20220206614
2022-06-30

Touch display device

#1065
20220206608
2022-06-30

Display panel, display device and touch display panel

#1066
20220199001
2022-06-23

LED driving circuit, display panel, and pixel driving device

#1067
20220199000
2022-06-23

PIXEL CIRCUIT SHARING DRIVING TRANSISTOR

#1068
20220198995
2022-06-23

Driving circuit for power efficient LED display

#1069
20220198976
2022-06-23

Pixel structure, driving method and display device

#1070
20220198975
2022-06-23

Gate driving circuit and display device

#1071
20220189385
2022-06-16

Display device

#1072
20220189380
2022-06-16

Light-emitting diode (LED) display driver with programmable scan line sequence

#1073
20220189375
2022-06-16

Display device and driving method thereof

#1074
20220189371
2022-06-16

Display screen, drive control method and drive-control apparatus thereof

#1075
20220189368
2022-06-16

Gate driving circuit, display device and method for driving display device

#1076
20220189361
2022-06-16

Display module, driving method thereof and display device

#1077
20220189360
2022-06-16

Display device

#1078
20220189359
2022-06-16

SHIFT REGISTER UNIT, GATE DRIVING CIRCUIT, AND DISPLAY PANEL

#1079
20220189358
2022-06-16

Display device

#1080
20220180802
2022-06-09

Pixel circuit, array substrate comprising the same and display panel

#1081
20220172658
2022-06-02

Gate circuit and display device

#1082
20220171487
2022-06-02

Method of driving touch panel and touch with display driver system using the same

#1083
20220165200
2022-05-26

Display apparatus and method of driving display panel using the same

#1084
20220165195
2022-05-26

Scan driver circuitry and operating method thereof

#1085
20220157251
2022-05-19

Display apparatus

#1086
20220157223
2022-05-19

PIXEL CIRCUIT AND DRIVING METHOD THEREOF, AND DISPLAY DEVICE

#1087
20220157216
2022-05-19

Data processing device and display device

#1088
20220157215
2022-05-19

Light emitting display device including a sensing circuit and method of driving the same

#1089
20220156477
2022-05-19

Display device having an initialization line

#1090
20220148498
2022-05-12

Display device and method of driving the same

#1091
20220148494
2022-05-12

Light emitting display panel and light emitting display apparatus including the same

#1092
20220148482
2022-05-12

Electronic device and scan driving circuit

#1093
20220148480
2022-05-12

Display assembly, display apparatus, and display method and transmission method of data signal

#1094
20220139304
2022-05-05

LIGHT EMITTING DEVICE AND LIGHT EMITTING UNIT

#1095
20220139301
2022-05-05

Display device

#1096
20220139300
2022-05-05

Light emitter board, display device, and method for repairing display device

#1097
20220139293
2022-05-05

Display device

#1098
20220139283
2022-05-05

Splicing display device

#1099
20220131030
2022-04-28

Method of manufacturing display apparatus and the display apparatus

#1100
20220130313
2022-04-28

Stage circuit and a scan driver including the same

#1101
20220130309
2022-04-28

Gate driving unit, gate driving circuit, gate driving method and display device

#1102
20220130308
2022-04-28

Method for controlling display and electronic device supporting the same

#1103
20220130307
2022-04-28

Gate electrode driving circuit and display panel

#1104
20220130306
2022-04-28

GOA driving circuit, display panel and display device

#1105
20220123045
2022-04-21

Display device

#1106
20220122562
2022-04-21

Semiconductor Device, and Display Device and Electronic Device Utilizing the Same

#1107
20220122523
2022-04-21

Display panel including chip on film, method for driving the same and display device

#1108
20220122521
2022-04-21

Driving device and driving method of display panel to detect whether sub-pixel circuit is in abnormal open state

#1109
20220122512
2022-04-21

Display device, drive circuit, and driving method

#1110
20220122509
2022-04-21

DRIVING CONNECTOR AND DISPLAY DEVICE INCLUDING THE SAME

#1111
20220122506
2022-04-21

DISPLAY DEVICE AND TERMINAL

#1112
20220122503
2022-04-21

Display panel

#1113
20220122502
2022-04-21

Gate driving unit circuit and method of driving the same, gate driving circuit and display apparatus

#1114
20220116520
2022-04-14

IMAGE CAPTURE BY IMAGE-CAPTURE DEVICE POSITIONED BEHIND DISPLAY DEVICE

#1115
20220115408
2022-04-14

Display device including two kinds of pixel arrangements

#1116
20220114956
2022-04-14

Method of controlling the transition between different refresh rates on a display device

#1117
20220114950
2022-04-14

Pixel circuit and display device

#1118
20220114941
2022-04-14

Display panel and electronic device

#1119
20220114936
2022-04-14

Display apparatus and display system having the same

#1120
20220114934
2022-04-14

Display panel and electronic device

#1121
20220114933
2022-04-14

Gate-driver-on-array type display panel

#1122
20220108666
2022-04-07

Display apparatus and electronic device

#1123
20220108647
2022-04-07

Display device with system-on-chip including optical performance adjustment IP core

#1124
20220108645
2022-04-07

Display panel containing GOA circuits arranged between adjacent rows of pixel units

#1125
20220108644
2022-04-07

DISPLAY PANEL

#1126
20220101796
2022-03-31

Shift register, gate driving circuit, display device and gate driving method

#1127
20220101783
2022-03-31

Pixel driving structure and display panel

#1128
20220101782
2022-03-31

SHIFT REGISTER AND DRIVING METHOD THEREOF, GATE DRIVING CIRCUIT AND DISPLAY APPARATUS

#1129
20220101778
2022-03-31

Electroluminescent display panel having pixel driving circuit

#1130
20220101777
2022-03-31

Display device with internal compensation

#1131
20220101774
2022-03-31

Scan driver

#1132
20220101769
2022-03-31

Gate driving circuit and driving method thereof and display panel

#1133
20220093032
2022-03-24

Display device integrating display function and fingerprint scanning function

#1134
20220093024
2022-03-24

Shift register unit and driving method thereof, gate driving circuit and display device

#1135
20220085072
2022-03-17

Liquid crystal display device and electronic device

#1136
20220084460
2022-03-17

Pixel driving chip and driving method therefor, and display apparatus

#1137
20220084459
2022-03-17

Method of generating compensation data of display device and apparatus for generating compensation data of display device

#1138
20220084449
2022-03-17

Tiling display device

#1139
20220083193
2022-03-17

Electronic device and method for testing the same

#1140
20220076617
2022-03-10

Pixel and display device including the same

#1141
20220068197
2022-03-03

DISPLAY APPARATUS AND CONTROL METHOD THEREOF

#1142
20220068192
2022-03-03

Display system including sub display apparatuses and method of driving the same

#1143
20220068190
2022-03-03

Gate driving circuit, display device and repair method

#1144
20220068183
2022-03-03

Driving circuit with multiple stage registers performing voltage regulation

#1145
20220059041
2022-02-24

Spatial light modulator system, spatial light modulator device, and display apparatus for preventing influences of mechanical operations of a light modulation unit

#1146
20220059024
2022-02-24

Display apparatus

#1147
20220059019
2022-02-24

Repairable GOA drive system, driving method for GOA circuit, and display panel

#1148
20220059014
2022-02-24

Light-emitting diode display device and light-emission control method thereof

#1149
20220059001
2022-02-24

Display panel and display device

#1150
20220058368
2022-02-24

Fingerprint Identification Method by Using Electronic Device and the Electronic Device Thereof

#1151
20220057684
2022-02-24

Liquid crystal display device

#1152
20220051609
2022-02-17

Input sensing device and display device including the same

#1153
20220051607
2022-02-17

Source driving circuit and operating method thereof

#1154
20220051606
2022-02-17

Display device with adjustable slew rate and output timing of a data signal according to a position of a signal line

#1155
20220051598
2022-02-17

Gate on array circuit

#1156
20220046212
2022-02-10

Scan needle and scan display system including same

#1157
20220044619
2022-02-10

Display device and method of driving the same

#1158
20220044613
2022-02-10

Scan needle and scan display system including same

#1159
20220044609
2022-02-10

Data transmission circuit and display apparatus including the same

#1160
20220037302
2022-02-03

Display device

#1161
20220036816
2022-02-03

SCAN DRIVER

#1162
20220036813
2022-02-03

Electroluminescence display apparatus reducing number of gate lines in double rate driving

#1163
20220036812
2022-02-03

Electroluminescence display apparatus

#1164
20220036810
2022-02-03

Display device having an enlarged display area

#1165
20220036802
2022-02-03

Scan driver and display device

#1166
20220036800
2022-02-03

Gate driver circuit of display panel, driving method therefor and display device

#1167
20220036797
2022-02-03

Display device including first dots connected to first stages and second dots connected to second stages

#1168
20220036796
2022-02-03

Circuit, method of driving panel, and display device

#1169
20220036790
2022-02-03

Scanning circuit, display panel and display device

#1170
20220036788
2022-02-03

SHIFT REGISTER AND METHOD FOR DRIVING THE SAME, GATE DRIVING CIRCUIT, AND DISPLAY APPARATUS

#1171
20220036786
2022-02-03

Timing control board, drive device and display device

#1172
20220028319
2022-01-27

Display device performing image sticking compensation based on accumulated degradation amount, and method of compensating image sticking in a display device

#1173
20220028317
2022-01-27

Display device

#1174
20220028308
2022-01-27

Display device

#1175
20220020313
2022-01-20

DRIVING METHOD OF A DISPLAY PANEL

#1176
20220020311
2022-01-20

Display device including first stages connected to first scan lines and second stages connected to second scan lines

#1177
20220020306
2022-01-20

Image data corrector and display device having the same

#1178
20220013736
2022-01-13

Light-emitting element, display device, electronic device, and lighting device

#1179
20220013575
2022-01-13

Display device

#1180
20220005405
2022-01-06

Display device having a reset line for supplying a reset signal

#1181
20220005403
2022-01-06

Pixel circuit, driving method thereof, and display panel

#1182
20220005402
2022-01-06

Scan driver and display device having the same

#1183
20210408074
2021-12-30

Array substrate, method for manufacturing the same, and display device

#1184
20210408072
2021-12-30

Display panel, gate electrode driving circuit, and electronic device

#1185
20210407382
2021-12-30

Circuit device, electro-optical element, and electronic apparatus

#1186
20210407381
2021-12-30

Stage and display device including the same

#1187
20210407376
2021-12-30

Pixel circuit, driving method, and display apparatus

#1188
20210407373
2021-12-30

Display driving method, display panel and display device

#1189
20210407357
2021-12-30

GOA circuit and display panel

#1190
20210407356
2021-12-30

GOA circuit and display device

#1191
20210407351
2021-12-30

Display panel and display drive method thereof, and display device

#1192
20210399043
2021-12-23

Display device and method of manufacturing the same

#1193
20210398508
2021-12-23

Display device and image display system having the same

#1194
20210398501
2021-12-23

LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME

#1195
20210398462
2021-12-23

Apparatus for testing display device and display device for performing mura compensation and mura compensation method

#1196
20210383769
2021-12-09

Display panel having a gate driver integrated therein

#1197
20210383760
2021-12-09

Gate driver and display device including the same

#1198
20210383741
2021-12-09

Pulse width modulation for driving pixel using comparator

#1199
20210377717
2021-12-02

Gate driving unit, gate driving method, gate driving circuit and display device

#1200
20210375197
2021-12-02

Light-emitting diode display panel and light-emitting diode display device