JP7344387B2 - Led表示装置及びその駆動方法並びにチップ - Google Patents
Led表示装置及びその駆動方法並びにチップ Download PDFInfo
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- JP7344387B2 JP7344387B2 JP2022529751A JP2022529751A JP7344387B2 JP 7344387 B2 JP7344387 B2 JP 7344387B2 JP 2022529751 A JP2022529751 A JP 2022529751A JP 2022529751 A JP2022529751 A JP 2022529751A JP 7344387 B2 JP7344387 B2 JP 7344387B2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3216—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3275—Details of drivers for data electrodes
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2230/00—Details of flat display driving waveforms
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Led Devices (AREA)
Description
本発明は、表示技術分野に属し、さらに具体的には、LED表示装置及びその駆動方法並びにチップに関する。
Claims (10)
- LED表示装置であって、
複数本の行線、複数本の列線及び複数の画素ユニットを含み、前記複数の画素ユニットのうちの各画素ユニットは、前記複数本の行線の1つ及び前記複数本の列線の1つに接続されるLEDを含む、表示アレイと、
前記複数本の行線に接続され、選択信号を提供するための行駆動モジュールと、
前記複数本の列線に接続され、パルス幅変調信号に基づいて、階調データに対応する駆動信号を提供するための列駆動モジュールと、
前記複数本の列線に接続されるチャンネル制御モジュールとを含み、
前記チャンネル制御モジュールは、前記パルス幅変調信号が有効である第1の期間に、対応する列線の列線電圧を目標電圧に調節するために用いられる、LED表示装置。 - 前記列駆動モジュールは、前記第1の期間の後の第2の期間に、定電流源が駆動電流を提供するように制御することによって、対応する列線の複数のLEDを点灯させて、階調に対応する輝度を発生させるために用いられる、ことを特徴とする請求項1に記載のLED表示装置。
- 前記チャンネル制御モジュールは、
正相入力端、逆相入力端、イネーブル端及び出力端をそれぞれ含む複数のバッファ増幅器を含み、
前記正相入力端は、前記目標電圧を受信するために用いられ、前記逆相入力端及び前記出力端は、対応する列線に接続され、前記イネーブル端は、イネーブル信号を受信するために用いられる、ことを特徴とする請求項2に記載のLED表示装置。 - 前記チャンネル制御モジュールは、予め設定された数値に基づいて、前記複数本の列線の目標電圧を設定するための目標電圧発生ユニットをさらに含む、ことを特徴とする請求項3に記載のLED表示装置。
- 前記チャンネル制御モジュールは、
前記複数本の列線に接続され、前記複数本の列線の最小オン電圧を取得するための電圧検出ユニットと、
前記複数本の列線の最小オン電圧に基づいて、前記複数本の列線のそれぞれの目標電圧を設定するための目標電圧発生ユニットとをさらに含む、ことを特徴とする請求項3に記載のLED表示装置。 - 前記チャンネル制御モジュールは、前記各列線のパルス幅変調信号と同期した前記イネーブル信号を生成するためのタイミングジェネレータをさらに含む、ことを特徴とする請求項3~5のいずれか1項に記載のLED表示装置。
- 前記表示アレイは、LED表示アレイ、AMOLED表示アレイ、MicroLED又はMiniLED表示アレイを含む、ことを特徴とする請求項1に記載のLED表示装置。
- LED表示装置用の駆動方法であって、
前記LED表示装置は、複数本の行線、列線及び複数の画素ユニットを含み、各画素ユニットは、前記複数本の行線の1つ及び前記複数本の列線の1つに接続されるLEDを含み、
表示画像に基づいて階調データを生成するステップと、
前記階調データに基づいてパルス幅変調信号を生成するステップと、
前記パルス幅変調信号が有効である第1の期間に、対応する列線の列線電圧を目標電圧に調節するステップとを含む、LED表示装置用の駆動方法。 - 前記第1の期間の後の第2の期間に、前記パルス幅変調信号に基づいて、定電流源が駆動電流を提供するように制御することで、対応する列線の複数のLEDを点灯させて、階調に対応する輝度を発生させるステップをさらに含む、ことを特徴とする請求項8に記載の駆動方法。
- LED表示装置用のチップであって、
請求項1~7のいずれか1項に記載の行駆動モジュール、列駆動モジュール及びチャンネル制御モジュールのうちの少なくとも1つを含む、ことを特徴とするLED表示装置用のチップ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN201911141020.XA CN110853570B (zh) | 2019-11-20 | 2019-11-20 | Led显示装置及其驱动方法和芯片 |
CN201911141020.X | 2019-11-20 | ||
PCT/CN2020/076105 WO2021098068A1 (zh) | 2019-11-20 | 2020-02-21 | Led显示装置及其驱动方法和芯片 |
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JP2023503917A JP2023503917A (ja) | 2023-02-01 |
JP7344387B2 true JP7344387B2 (ja) | 2023-09-13 |
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US (1) | US11741888B2 (ja) |
JP (1) | JP7344387B2 (ja) |
KR (1) | KR102645255B1 (ja) |
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WO (1) | WO2021098068A1 (ja) |
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CN111627392B (zh) * | 2020-05-20 | 2021-11-02 | 昇显微电子(苏州)有限公司 | 一种降低amoled显示驱动芯片列驱动电路功耗的方法 |
TWI746153B (zh) * | 2020-06-18 | 2021-11-11 | 聯詠科技股份有限公司 | 發光二極體驅動器及其預充電方法 |
CN114067724B (zh) * | 2020-07-29 | 2023-05-09 | 西安钛铂锶电子科技有限公司 | 灰度数据处理方法、装置及***和显示装置 |
CN112071274B (zh) | 2020-09-15 | 2023-04-07 | 北京集创北方科技股份有限公司 | 亮度调节方法、装置及显示设备 |
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2019
- 2019-11-20 CN CN201911141020.XA patent/CN110853570B/zh active Active
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2020
- 2020-02-21 JP JP2022529751A patent/JP7344387B2/ja active Active
- 2020-02-21 US US17/778,795 patent/US11741888B2/en active Active
- 2020-02-21 KR KR1020227020945A patent/KR102645255B1/ko active IP Right Grant
- 2020-02-21 WO PCT/CN2020/076105 patent/WO2021098068A1/zh active Application Filing
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JP2001085984A (ja) | 1999-07-21 | 2001-03-30 | Infineon Technol North America Corp | 発光素子アレイのための制御回路 |
JP2004341516A (ja) | 2003-04-25 | 2004-12-02 | Barco Nv | 共通アノード受動マトリクス有機発光ダイオード(oled)ディスプレイ、そのための駆動回路、その有機発光ダイオードをプリチャージするための方法、および配置 |
JP2005300990A (ja) | 2004-04-13 | 2005-10-27 | Fuji Electric Holdings Co Ltd | データ線駆動回路およびデータ線駆動方法 |
JP2007003954A (ja) | 2005-06-24 | 2007-01-11 | Rohm Co Ltd | 表示制御回路、表示装置および半導体集積回路 |
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US20180090048A1 (en) | 2016-09-29 | 2018-03-29 | Chipone Technology (Beijing) Co. | Led Display Device and Method For Driving The Same |
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US20220415246A1 (en) | 2022-12-29 |
KR20220101183A (ko) | 2022-07-19 |
KR102645255B1 (ko) | 2024-03-08 |
CN110853570A (zh) | 2020-02-28 |
WO2021098068A1 (zh) | 2021-05-27 |
US11741888B2 (en) | 2023-08-29 |
CN110853570B (zh) | 2021-11-02 |
JP2023503917A (ja) | 2023-02-01 |
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