KR20190076155A - 터치 패널 액정 표시 장치 및 그의 구동 방법 - Google Patents
터치 패널 액정 표시 장치 및 그의 구동 방법 Download PDFInfo
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Abstract
Description
도 2는 상기 도 1에 도시한 터치 패널 액정 표시 장치의 구동 파형도
도 3은 종래의 터치 패널 액정 표시 장치의 터치 전극 배치 및 구동 회로 구성도
도 4는 종래의 터치 패널 액정 표시 장치의 터치 센싱 기간에 터치 전극에 인가되는 신호 설명도
도 5는 도 3의 멀티플렉서의 구체적인 구성도
도 6은 본 발명에 따른 터치 패널 액정 표시 장치의 터치 전극 배치 및 구동 회로 구성도
도 7은 본 발명에 따른 멀티플렉서의 구체적인 구성도
도 8은 본 발명의 제 1 실시예에 따른 터치 패널 액정 표시 장치의 터치 센싱 기간에 터치 전극에 인가되는 신호 설명도이다.
도 9는 본 발명의 제 2 실시예에 따른 터치 패널 액정 표시 장치의 터치 센싱 기간에 터치 전극에 인가되는 신호 설명도이다.
도 10은 종래와 본 발명에 따른 터치 패널 액정 표시 장치의 주기성 노이즈 비교 그래프
17: LFD 신호 출력부 18: 접지단
Claims (6)
- 패널 상에 매트릭스 형태로 배열되는 복수개의 터치 전극들; 및
상기 복수개의 터치 전극들을 구동하는 복수개의 멀티플렉서들을 포함하고,
각 멀티플렉서는
복수개의 출력 채널과,
상기 복수개의 출력 채널들 중 하나의 채널에 터치 센싱 신호를 출력하기 위한 제 1 스위칭 블록과,
상기 복수개의 출력 채널들 중 상기 터치 센싱 신호가 출력되는 채널의 양쪽 인접 채널들에 LFD 신호를 출력하기 위한 제 2 스위칭 블록와,
상기 복수개의 출력 채널들 중 상기 터치 센싱 신호 및 상기 LFD 신호가 출력되는 채널을 제외한 나머지 출력 채널들에 접지 신호 및 플로우팅 신호를 출력하기 위한 제 3 스위칭 블록을 구비하는 터치 패널 액정 표시 장치. - 패널 상에 매트릭스 형태로 배열되는 복수개의 터치 전극들; 및
상기 복수개의 터치 전극들을 구동하는 복수개의 멀티플렉서들을 포함하고,
상기 복수개의 멀티플렉서들은
모든 출력 채널들에 터치 센싱 신호를 출력하는 적어도 하나의 멀티플렉서와,
상기 모든 출력 채널들에 터치 센싱 신호를 출력하는 적어도 하나의 멀티플렉서에 상하로 인접하게 배치되어 상기 모든 출력 채널들에 LFD 신호를 출력하는 멀티플렉서들과,
상기 모든 출력 채널에 접지 신호 및 플로우팅 신호를 출력하는 나머지 멀티플렉서를 구비하는 터치 패널 액정 표시 장치. - 패널 상에 매트릭스 형태로 배열되는 복수개의 터치 전극들과 상기 복수개의 터치 전극들을 구동하는 복수개의 멀티플렉서들을 구비한 터치 패널 액정 표시 장치의 구동 방법에 있어서,
적어도 하나의 수직 라인의 복수개의 터치 전극들에 터치 센싱 신호를 인가하고, 상기 터치 센싱 신호를 인가되는 적어도 하나의 수직 라인에 양쪽으로 인접한 수직 라인의 복수개의 터치 전극들에 LFD 신호를 인가하고, 나머지 복수개의 터치 전극들은 접지 또는 플로우팅시키는 터치 패널 액정 표시 장치의 구동 방법. - 제 3 항에 있어서,
각 멀티플렉서는 (n)개의 채널을 구비하고, (k)번째 채널에 터치 센싱 신호를 출력하고, (k-1)번째 및 (k+1) 번째 채널에 LFD 신호를 출력하고, 나머지 채널들을 접지 또는 플로우팅시키는 터치 패널 액정 표시 장치의 구동 방법 (n 및 K는 자연수). - 패널 상에 매트릭스 형태로 배열되는 복수개의 터치 전극들과 상기 복수개의 터치 전극들을 구동하는 복수개의 멀티플렉서들을 구비한 터치 패널 액정 표시 장치의 구동 방법에 있어서,
적어도 하나의 수평 라인의 복수개의 터치 전극들에 터치 센싱 신호를 인가하고, 상기 터치 센싱 신호를 인가되는 적어도 하나의 수평 라인에 상하로 인접한 수평 라인의 복수개의 터치 전극들에 LFD 신호를 인가하고, 나머지 복수개의 터치 전극들은 접지 또는 플로우팅시키는 터치 패널 액정 표시 장치의 구동 방법. - 제 5 항에 있어서,
(k)번째 멀티플렉서는 모든 채널에 터치 센싱 신호를 출력하고, (k-1)번째 및 (k+1) 번째 멀티플렉서들은 모든 채널에 LFD 신호를 출력하고, 나머지 멀티플렉서들은 모든 채널들을 접지 또는 플로우팅시키는 터치 패널 액정 표시 장치의 구동 방법.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020170177727A KR20190076155A (ko) | 2017-12-22 | 2017-12-22 | 터치 패널 액정 표시 장치 및 그의 구동 방법 |
US16/212,131 US10592040B2 (en) | 2017-12-22 | 2018-12-06 | Touch panel liquid crystal display device and method of driving the same |
CN201811555068.0A CN110045857B (zh) | 2017-12-22 | 2018-12-19 | 触摸面板液晶显示器装置及其驱动方法 |
TW107146410A TWI691880B (zh) | 2017-12-22 | 2018-12-21 | 觸控面板液晶顯示裝置以及其驅動方法 |
KR1020230076050A KR20230092851A (ko) | 2017-12-22 | 2023-06-14 | 터치 패널 액정 표시 장치 및 그의 구동 방법 |
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KR1020170177727A KR20190076155A (ko) | 2017-12-22 | 2017-12-22 | 터치 패널 액정 표시 장치 및 그의 구동 방법 |
KR1020230076050A Pending KR20230092851A (ko) | 2017-12-22 | 2023-06-14 | 터치 패널 액정 표시 장치 및 그의 구동 방법 |
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US (1) | US10592040B2 (ko) |
KR (2) | KR20190076155A (ko) |
CN (1) | CN110045857B (ko) |
TW (1) | TWI691880B (ko) |
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KR102601818B1 (ko) * | 2018-07-19 | 2023-11-14 | 엘지디스플레이 주식회사 | 터치 센서를 구비하는 표시장치 |
KR20230076005A (ko) * | 2021-11-23 | 2023-05-31 | 엘지디스플레이 주식회사 | 터치 구동 회로 및 터치 디스플레이 장치 |
CN115294899B (zh) * | 2022-07-21 | 2024-12-27 | 武汉华星光电半导体显示技术有限公司 | 显示面板 |
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US20110156839A1 (en) * | 2009-12-31 | 2011-06-30 | Silicon Laboratories Inc. | Capacitive sensor with variable corner frequency filter |
US20110157068A1 (en) * | 2009-12-31 | 2011-06-30 | Silicon Laboratories Inc. | Touch screen power-saving screen scanning algorithm |
US8780074B2 (en) * | 2011-07-06 | 2014-07-15 | Sharp Kabushiki Kaisha | Dual-function transducer for a touch panel |
KR101648571B1 (ko) | 2014-07-16 | 2016-08-18 | 엘지디스플레이 주식회사 | 인 셀 터치 타입의 표시장치 |
KR102270988B1 (ko) * | 2014-12-26 | 2021-06-30 | 엘지디스플레이 주식회사 | 터치표시장치 및 그 구동방법 |
US10809855B2 (en) | 2015-08-19 | 2020-10-20 | Novatek Microelectronics Corp. | Driving circuit and a method for driving a display panel having a touch panel |
KR102342357B1 (ko) * | 2015-09-30 | 2021-12-24 | 엘지디스플레이 주식회사 | 표시장치와 그 구동방법 |
EP3156885B1 (en) | 2015-10-13 | 2020-06-03 | LG Display Co., Ltd. | Signal control circuit, power control circuit, drive circuit, timing controller, touch system, and touch display device and driving method thereof |
KR101809917B1 (ko) * | 2016-01-29 | 2017-12-21 | 엘지디스플레이 주식회사 | 구동 회로, 터치 디스플레이 장치 및 그 구동방법 |
KR102556965B1 (ko) * | 2016-05-30 | 2023-07-19 | 엘지디스플레이 주식회사 | 미러 디스플레이 |
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- 2018-12-19 CN CN201811555068.0A patent/CN110045857B/zh active Active
- 2018-12-21 TW TW107146410A patent/TWI691880B/zh active
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2023
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US20190196643A1 (en) | 2019-06-27 |
US10592040B2 (en) | 2020-03-17 |
KR20230092851A (ko) | 2023-06-26 |
CN110045857A (zh) | 2019-07-23 |
TWI691880B (zh) | 2020-04-21 |
CN110045857B (zh) | 2022-07-19 |
TW201928638A (zh) | 2019-07-16 |
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