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TW200903415A - Device and method for driving light-emitting diodes - Google Patents

Device and method for driving light-emitting diodes Download PDF

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Publication number
TW200903415A
TW200903415A TW096124016A TW96124016A TW200903415A TW 200903415 A TW200903415 A TW 200903415A TW 096124016 A TW096124016 A TW 096124016A TW 96124016 A TW96124016 A TW 96124016A TW 200903415 A TW200903415 A TW 200903415A
Authority
TW
Taiwan
Prior art keywords
data
terminal
state
pixel
register
Prior art date
Application number
TW096124016A
Other languages
Chinese (zh)
Inventor
Guan-Ting Lu
Cheng-Han Hsieh
Original Assignee
Silicon Touch Tech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Silicon Touch Tech Inc filed Critical Silicon Touch Tech Inc
Priority to TW096124016A priority Critical patent/TW200903415A/en
Priority to JP2007276920A priority patent/JP2009015281A/en
Priority to KR1020070107596A priority patent/KR100938620B1/en
Priority to EP08250022A priority patent/EP2012298A3/en
Publication of TW200903415A publication Critical patent/TW200903415A/en

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Classifications

    • 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
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
    • G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
    • G09G3/14—Semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • 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
    • G09G3/2085—Special arrangements for addressing the individual elements of the matrix, other than by driving respective rows and columns in combination
    • 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
    • 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
    • G09G2310/0275—Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
    • 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
    • G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
    • 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
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • 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
    • G09G2330/10—Dealing with defective pixels
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
  • Liquid Crystal (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Led Devices (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The present invention discloses methods and display drivers for pixel status detection of flat panel displays. The method includes the following steps of: providing scan data to the register; using the scan data to drive the pixel; detecting the pixel status to obtain status data; refreshing the register with the status data; and, comparing the scan data with the status data to determine whether the pixel is in abnormal status or not. Based on the aforementioned method, the pixel status could be real-time monitored.

Description

200903415 υουοζζ-υυ^. ^i409twf.doc/n 九、發明說明： 【發明所屬之技術領域】 。更明4地說，本發明 之方法及使用所迷方、去 本發明是關於平板翔 „ 炊頌不态技術 是關於平板顯示器的檢剛像素狀陣、 之顯示驅動器。 ” ^ 【先前技術】 隨著技術的發展’視_品、尤其是數位視乡_200903415 υουοζζ-υυ^. ^i409twf.doc/n IX. Description of the invention: [Technical field to which the invention belongs]. More specifically, the method and the method of the present invention are directed to the present invention. The present invention relates to a display driver for a flat-panel display of a flat panel display. ” ^ [Prior Art] With the development of technology, _ products, especially digital homes _

理產品已k成我們日常生活中不可或缺的物品。在數位視 頻/圖像處理設備巾的_裝置是顯示相關 資訊的重要裝 置之一。用戶可從顯示器讀取資訊以借此進一步操作設 備。以光龟子和半導體技術製造的平板顯示器（例如，發 光二極體（LED)顯示器）在顯示器領域中較為突出。由 於LED顯示器的優點是大尺寸、高顯示品質、高輝度和寬 視角，因此LED顯示器已變為廣泛使用的大尺寸顯示器。 LED顯示器具有以下特性：當LED顯示器的像素被 破壞時’可藉由直接用新的LBD替換被破壞的LED來修 復像素。因此，LED顯示器中開始出現檢測LED狀態的 技術。LED顯示裝置中LED的異常狀態包含開路、短路 和過熱溫度。一般來說，現有技術中4將檢測LED狀態的 方法分類為以下三種技術。 圖1說明現有技術中的LED驅動器，其可說明現有技 術中檢測LED狀態的第一種技術。在第一種技術中，如圖 1所示，連接到多個像素的每一驅動電路103-1到l〇3-m 具有耦合到控制單元101的警示端子。當所述像素中的一 200903415 υουοζζ-υ^ Zi4〇9twf：doc/n 像素處於料絲，且轉電路 異常狀態時，則從連接到所 檢測到所述 路的警示端子將發送警示信號異常像素的驅動電 =電路應]到_的警示端子通常，驅 合到控制單S 1G1，以減少控 在-起以輕 是這樣做，控制單元1〇1難以判定那目。但 在現有技術中的第二種技術中 象吊。 用於檢测像素狀態之檢測電路 f母；'驅動電路添加 兀°每—驅動電路的檢測電路且有並白/、報告給控制單 元的專門電線。因此，第二種技_ ^:3控制單 的複雜性。 s加裝置成本和設計 在現有技術令的第三種技術中 :電路和兩個控制信號來使驅動電路在 換式之間切換。第6,93〇,679 β2號貝^式與非顯不 技術。當驅動電路處於非顯示模時 ^ 了這種 像素狀態資訊。但使用兩個控制列^線可攜帶 :性’且切換到非顯示模式可能中斷：示=計的複 技衡也不能滿足即時監測要求。 、、、圖像。巧種 【發明内容】 因此，本發明揭露平板顯示器 方法和顯示驅動器。藉由本發明，則不需要模測 來進行像素狀態檢測。且因為在像素/刀、電路 ，收集像素狀態資料，:==== 外，藉由將掃描資料與狀態資料進行比較，可心常像^ 200903415 υυν/υ^χ-uu^ A 409twf.d〇〇/n 的位置進行精確定點。 法。本發明的目的是提供平板顯示器的像素狀態制的方 =板顯=器（其包含具有可驅動n個像素〇個暫存 二的^不驅動器）的像素狀態檢测方法包括以下步驟·將 ===:==料驅動像素;^ :資料與狀態資料進行比較，以確定像素是;處於異; 平板顯示器（其包含具有可驅動η 器的顯示驅動器）的像素狀態檢測的另—方法 驟：以驅動器致能η個像素·於、目丨/ ^ 下乂 切—像素處於異常狀態，其 檢測目=用r板顯示器的像素狀態 驅動器包括晰動個像素的所述顯示 料輸純；料輸入端子；資 _電路的資料輪入端的==子=到第 位移暫存器包括輪入端子和輪移:其中每-器的輸出端子輕合到第㈣位移以 200903415 ^ji409twf.doc/n =端子其包=撿;:二然數且―及 測裝置的檢測端子分別二子’其中檢 出端子分_合到位移暫存子’且檢職置的輸 態，並將狀態資料輸出到位^暫存^則所述n個像素的狀 η 子，兮包括接收端子和掃描資料端 子，且接收端子耦合到丄驅動電路的資料輸入端 次接收狀態資料，1中，第叙路的貢料輸出端子以依 =時脈罐㈣ 置進於異常狀態的像素位 ::圖像且咖中斷的情況下實現即時監測和不可 解，上述和其他目的、特徵及優點易於理 下文砰、'，田描述▼有圖式的優選實施例。 應瞭解’以上—般描述和以下詳細描述均是示範性 【二來提供對所主張的本發明的進-步闡釋。 寬# 顯不益具有大尺寸、高顯示品質、高輝度和 寬，角荨優點，故LED顯示器已變為廣泛使用之大尺寸顯 不^下文中’制LED顯示时為實例來描述本發明的 200903415 υουοζζ-υυζ zi409twf.doc/n 實施例。但應注意，儘管以下實施例中顯示器中的像素由 LED實施，但其他實施例中，像素可由薄膜電晶體和液 晶、有機發光二極體（OLED)或其他發光裝置實施。 圖2是根據本發明第一實施例之用於LED狀態檢測之 择頁示驅動裔的示意方塊圖。參看圖2，顯示驅動器包括 制單元201和m個驅動電路203-1到203-m。m個驅動電 路203-1到203_m以級聯方式連接。如果驅動電路 到203-m中的每一者可驅動！^固LED，那麼圖2中的顯示 驅動器可驅動mxn個LED。每—驅動電路具有資料輸入 (DAI)端子和貧料輸出（DA〇)端子。每—驅動電路挪巧 到203-m中的位移暫存器可從資料輸入（DAI)端子 資料輸出（DA0)端子逐位元地將輸人資料移位。: 路203-1的資料輸入端預合到控制單元2〇1的掃二 "!子二且帶ΐ待顯示的圖像資料之掃描資料經由掃描資料 端子隸制單S 201發送到驅動電路挪]到肌功 -驅動電路203-1的資料輸出端補合到第二驅動電路 人^料輸人端子；第二驅動電路2G3·2的資料輪出端 合到I㈣電路（圖2中未圖示 以此類推。最德驕動雪敗„ 細于， 鈿一 _ m的資料輸出端子耦合到控 制早兀201的接收端早。如^在丨_ ^ 卫制早70 201將掃描資料連續發 迗到驅動電路203-1到203 m p w + 〇3_m，母個時脈（CLK)中發送 一個掃描育料位元。 圖2中每-個驅動電路MW到％ 可在LED正顯示圖像(例如，_時檢測這些2 200903415 υουοζζ-υυζ ^1409twf.doc/n 的^I。當已將新圖像（圖像#κ+1) 7G 201發送到驅動電路2〇n 田貝料k控制單 時，控制單元發送閃鎖（L ’中的位移暫存器 加-m中的閃鎖暫存器以閃鎖住掃=至^動電路2〇3-1到 路203-1到2〇3-m中& 貝；斗，且母一驅動電 中_的資料來: = = =軸暫存器 ST:—態的狀態資料== 料的下如-中移暫存器。當將攜帶圖像服+2的資 新的掃描資料發送到驅動電路咖到2〇= 狀_料將經由驅動電路孤1到203仰的 端子與一信號同步地連續: 被._器導通時，所述Lm)的狀態檢測結 T "'a思義。因此，控制單元201僅可確定那些導通的 疋否處於異常狀態。控制單元2〇1可將 LED狀態資 二和相對應的掃描資料保存在記雜裝置巾，並將狀態資 與掃描育料進行比較以對那些異常LED的準確位置進 行精確定點。 。如果必須檢測所有LED的狀態，那麼控制單元2〇1 可將攜帶白色圖像資料的掃描資料發送到驅動電路203-1 到203-m’以導通所有LED。因為LED狀態資料將與時脈 jCLK)信號同步地連續移位至控制單元2〇1，所以控制 單几201可對時脈（CLK)信號進行計數，以對那些異常 200903415 υουοζζ-υυζ ζ i409twf.doc/n LED的準確位置進行精確定點。 圖3是根據本發明第_實施_驅 2中=)的内部連接示意方塊圖(二】 =:LED的艇動電路咖包括η個位： 0 _η、η個_暫存器咖到3〇3-η、驅動 測裝置307、資料輸入(DAI)端子、 二=)端子、時脈（CLK)輸人端子和_αΑΤ) 的次it"個位移暫存器3°Η到3(Π·η，第1位移暫存哭 輕合卿υ位移暫存器的資料輪入； 子’其中1是整數且0<i<=n。 ’ 的輸== 耐子器咖到3〇3_n，第j _暫存器 ，輸出缟子耦&到驅動緩衝器裝置3〇5以驅動第』 存曰器的輸入端子麵合到第j位移暫存器的輪 出鳊子，其中J疋整數且0<j<=n。 ㈣H驅動缓衝器裝置奶，其輸人端子輕合到η 4固問 u子态3〇3-1到3〇3_η的輸出端子，且其輪 到η個LED。 狗σ 對於檢測裝置307，其輸入端子輕合到LED，且 端子耗合到n個位移暫存器301-1到301-n。 别 驅動電路203_1的資料輸入（DAI)端子耗合到第— 位移暫存H 3G1-1的輸人端子。驅動電路加]的資料輪 = (dao)端子_合到第η位移暫存器3G1_n的輸出端子: 日守脈（clk)輪入端子將時脈信號提供到驅動電路 200903415 υουοζζ-υυζ zi409twf.d〇c/n 問鎖（LAT)輸入端子執合到η個問鎖暫存器則 以及檢測裝置307。 4 CLK和LATL就從控制單元發送到驅動電路2的_ι。 圖3中的檢測裝置3〇7可在η個LED 30M到3〇9_n 正顯不圖像（例如，圖像#κ)時檢測這些哪的狀雖。 當已將新圖像（®_K+1)的掃描資料發送到位移暫存器 301-1到301-η時’則發送閂鎖（LAT)信號至閂鎖暫存器 303-1到303-n以閂鎖掃描資料，且驅動缓衝器裝置3的 將根據閃鎖暫抑账1到3〇3-n Μ綱資料來驅動 LED 309-1到309-η。在接收到問鎖信號的同時，檢測裝置 二7將把LED 3G9-1肖3G9-n的狀態資料載人到位移暫存 裔301-1到3{)1_η。當經由資料輸入（DAI)端子移入新圖 像^圖像#K+2)的掃描資料時，這些LED狀態資料將經 由貧料輸出（DAO)端子與時脈（(χκ)信號同步地 移出。 巧 圖4是說明根據本發明第一實施例的LED狀態檢測方 法的流程圖。參看圖4，首先，控制單元將掃描資料提供 到位移暫存器（S4〇1)。接著，驅動缓衝器裝置將根據掃 描貧料驅動LED ( S403 )。檢測裝置可檢測[ED的狀態以 獲得狀態資料（S405)。接著，檢測裝置用狀態資料刷新 ^移暫存器（S4〇7)。最後，狀態資料將被位移元到控制 單凡’且控制單元可將掃描資料與狀態資料進行比較，以 確定那些LED處於異常狀態（S409)。 以下實例用於描述本發明第一實施例的實施方案。假 200903415 υουοζζ-υυζ zi409twf.doc/n 疋控制單元201將作為圖像#]^的資料的η位元掃描資料 (例如，01…1)發送到圖3申的驅動電路2034。也就是 說，邏輯位元0移位到第一位移暫存器30]U1，邏輯位元1 • ，位到第二位移暫存器301-2，…，且邏輯位元1移位到 • 第11位移暫存器301-n。當發送閂鎖（LAT)信號至驅動電 路2〇3-1時，閂鎖暫存器303-1到303-n將閂鎖圖像#κ的 掃描育料。接著，驅動緩衝器裴置將根據閂鎖暫存器 (' 到303_η中閂鎖的資料來驅動LED 309-1到309-η。在此實 例中，掃描資料為η位元（讥…丨），故閂鎖暫存器 到303-η閂鎖掃描資料之後，第一 LED 3094斷路，第二 LED 309-2導通，…’且第nLED 3〇9_n導通。 檢測裝置307可檢測現正顯示圖像的LED 309-1 到309-n的狀態。應注意，僅對於點亮的那些LED來說， 狀態檢測的結果才有意義。假定第二LED 3〇9_2異常。檢 測裝置307將發現第二LED 309-2異常，並在狀態資料的 第二位元中保存異常狀態位元（例如’邏輯位元為了 •ί/ 清楚說明本實施例，此處將對應於顯示圖像時之led 狀態的狀態資料稱為狀態資料#κ。 當下一圖像（圖像#尺+1)的η位元掃描資料已發送到 位移暫存器301-1到301-η時，再次發送閂鎖（lAt)信號 至驅動裝置203-1。當驅動裝置203-1接收到閃鎖（LAT) 信號時’檢測裝置307將把狀態資料#K載入到位移暫存器 301-1到301-η。在此實例中’將狀態資料#κ的第二位元 (其為邏輯0)載入到第二位移暫存器3〇1_2。當圖像#尺+2 12 200903415 uouoj^uuz ^i409twf.doc/n 的下一 n位元掃描資料發送到位移暫存器3〇M到3〇j 的狀態資料™移位 控制單元2(H可將圖像服的掃描資料與狀態資料狀 進行比較以確定那- LED異常。掃描資料中的邏輯 =相應的LED解通，且_ LED陳祕測結 有思義。在此實例中，圖像獲的掃描資料的第二位 n 從上文可知，不茜要模式切換電路和額外控制， =進1 LED狀態檢測。因為在咖正^中斷地顯 :同時收集L ED狀態資料，故可達成所謂的即時臣:Θ =的==狀態資料進行比較，可； 枓刷新暫存器並將掃描資料與狀態資輕=恶貧 在本發明的___。 摘任何發明均落 員可=實實施例’使得所屬領域的技術人 圖5是根據本發明第二實施例㈣智慧檢測功能來檢 13 200903415 υουοζζ-υυζ Zi409twf.doc/n 測LED狀態之顯示驅動器的示意方塊圖。參看圖5，顯示 驅動器包括控制單元5〇1和m個驅動電路5〇3乂 = 503-m。m個驅動電路503-1到503-m以級聯方式連接。 如果驅動電路503-1到503-m中的每一者可驅動n個 LED，那麼圖5中的顯示驅動器可驅動邮到固LED。每一 驅動電路503-1到503-m具有資料輸入（Dai)端子和資 料輸出（DAO)端子。每一驅動電路5034到5〇3_瓜中的 位移暫存器可從資料輸入（DAI)端子朝向資料輸出（da〇 端子逐位兀地將輸入資料移位。第—驅動電路5〇3_1的次 料輸入端子耦合到控制單元5〇1的掃描資料端子。二 動電路503·1的資料輸出端子㉟合到第二驅動電路撕 的資料輸人端子；第二驅動電路5G3_2的資料輸出端 合到第三f動電路（圖3中未圖示）的資料輸人端子；以 此類推。最後驅動電路503-m 6勺資料輸出端付合到 單元501的接收端子。控制單元5〇u♦攜帶待顯= 資料的掃描資料經由其掃描資料端子連續發送到驅動電^ 50W到503-m，每個時脈（CLK)中發送一個掃描資料位 元0 圖曰5,用智慧檢測（SDT)信號。智慧檢測過 起始點疋备驅動電路503-1到5〇3-m接收到由控制、 501發送，智慧檢測（SDT)信號之時，而智慧檢測過= 的結束點疋在當驅動電路503」到鮮瓜接收到追 檢測信號的第-閂鎖（LAT)信號之時。當驅動電路二 到503-m接收到智慧檢測（SDT )信號時，驅動電路刈^ 14 200903415 060622-002 2l409twf.doc/n 到503-m中的驅動緩衝器裝置將驅動並導通所有led，苴 :驅動裝置將紅亮财LED _小财咖的 ^度’因此當智慧檢财進行巾時，人餘域知到顯示 斋裝置中顯示的圖像的任何中斷，且可實現所謂的不可見 檢測L驅動電路503-1到5〇3_m中的檢測裝置將在所有LED 均點亮時檢測LED的狀態，並將攜帶LED狀態的狀態資 料載入到驅動電路503-1到5〇3_m中的位移暫存器。這些 led狀態資料將經由驅動電路5〇3_丨到5〇3_m的資料輸出 (DA〇)端子與智慧檢測（SDT)信號之後的時脈（CLK) 信號同步地連續移出到控制單元5〇1。因為LED的狀態資 料將與時脈（CLK)信號同步地連續移位至控制單元5〇1， 所以控制單元501可對時脈（clK)信號進行計數以對那 些異常LED的準確位置進行精確定點。 圖6是根據本發明第二實施例的具有智慧檢測功能的 驅動電路（例如，圖5中的5〇3_1)的内部連接的示意方 塊圖。參看圖6，用於驅動（例如）n個LED的驅動電路 503-1包括n個位移暫存器60^到601-η、η個閂鎖暫存 器603-1到603-η、驅動緩衝器裝置605、LEr)狀態檢測電 路607、資料輸入（DAI)端子、資料輸出（DA〇)端子、 時脈（CLK)輸入端子、閃鎖（LAT)輸入端子和智慧檢 測（SDT)輸入端子。 對於η個位移暫存器601-1到601-n，第i位移暫存器 的資料輸出端子耦合到第（i+Ι)位移暫存器的資料輸入端 子，其中i是整數且〇<i<n。 15 200903415 υου〇2/-υυζ zi409twf.doc/n 對於⑽問鎖暫存器齡！到6〇3_n，第j問鎖暫存器 的輸出端子箱合到驅動緩衝器裝置6〇5以驅動第』咖， 且第j問鎖暫存器的輸入端子麵合到第j位移暫存哭的輸 出端子，其t j是整數且。』㈣^的輪 =驅動緩衝器裝置6Q5，其輸人端付 鎖暫存器603-1到603_n的耠屮 ，Un 到η個LED。 辦⑹子，且其輸出端子輕合 對於制裝置_ ’其輪人端付合到咖，且 出鳊子耦合到η個位移暫存器到6〇1_n。 1 μΪΪΪ路肌1柯料輸人（DAI)端询合到第-夕暫存态601-1的輸入端子。驅動 ^謝隱η的輪出^ )輸入鳊子將時脈信號提供到驅 ^(Lat^ cThe product has become an indispensable item in our daily life. The device in the digital video/image processing device is one of the important devices for displaying related information. The user can read information from the display to further operate the device. Flat panel displays made with light turtles and semiconductor technology, such as light-emitting diode (LED) displays, are prominent in the field of displays. Since the advantages of the LED display are large size, high display quality, high luminance, and wide viewing angle, the LED display has become a widely used large-sized display. LED displays have the following characteristics: When the pixels of the LED display are broken, the pixels can be repaired by directly replacing the broken LED with a new LBD. Therefore, technology for detecting the state of LEDs has begun to appear in LED displays. The abnormal state of the LED in the LED display device includes an open circuit, a short circuit, and an overheat temperature. In general, the prior art 4 classifies the method of detecting the state of the LED into the following three techniques. Figure 1 illustrates a prior art LED driver that illustrates the first technique for detecting LED status in the prior art. In the first technique, as shown in FIG. 1, each of the drive circuits 103-1 to 103-m connected to a plurality of pixels has an alert terminal coupled to the control unit 101. When a 200903415 υουοζζ-υ^ Zi4〇9twf:doc/n pixel in the pixel is in the filament and the circuit is in an abnormal state, the warning signal abnormal pixel is sent from the warning terminal connected to the detected path. The drive circuit = circuit should be to the warning terminal of _, usually, drive to the control list S 1G1, to reduce the control - to lightly do so, the control unit 1 〇 1 is difficult to determine the purpose. However, in the second technique of the prior art, it is like a crane. A detection circuit for detecting the state of the pixel f; the 'drive circuit adds 兀° per-drive circuit detection circuit and has a white wire/special wire for reporting to the control unit. Therefore, the second technique _ ^: 3 control the complexity of the single. s plus device cost and design In the third technique of the prior art, the circuit and two control signals are used to switch the drive circuit between the switches. No. 6, 93 〇, 679 β2 No. 2 and non-display technology. This pixel state information is used when the driver circuit is in a non-display mode. However, using two control trains can carry: Sexuality and switching to non-display mode may be interrupted: the technical balance of the display = meter can not meet the requirements of real-time monitoring. ,,,image. SUMMARY OF THE INVENTION Accordingly, the present invention discloses a flat panel display method and display driver. With the present invention, no pixel sensing is required for pixel state detection. And because pixel/knife, circuit, collect pixel state data, :====, by comparing the scanned data with the state data, it can be like ^200903415 υυν/υ^χ-uu^ A 409twf.d The position of 〇〇/n is finely determined. law. An object of the present invention is to provide a pixel state detection method for a pixel state of a flat panel display (which includes a non-driver having n pixels and a temporary memory 2) including the following steps: ==:==material drive pixel; ^: data is compared with status data to determine the pixel is; in a different; flat panel display (which includes a display driver with a driveable n) for pixel state detection - another method: Enable the driver to enable n pixels, and then the target is in an abnormal state. The detection target = the pixel state driver of the r-plate display includes the display material of the pixel. Terminal; data_circuit data input terminal == sub = to the displacement register includes wheel entry terminal and wheel shift: where the output terminal of each device is lightly coupled to the fourth (fourth) displacement to 200903415 ^ji409twf.doc/n = The terminal has its package = 捡;: the number of the two and the detection terminal of the measuring device are respectively two sub-'where the terminal is separated from the displacement temporary storage sub- and the status of the inspection is set, and the status data is output to the position ^ temporarily Storing the n-pixel η兮 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括 包括The above-described and other objects, features and advantages are readily realized by the pixel position::image and the interruption of the coffee. The above and other objects, features and advantages are readily described below. It is to be understood that both the foregoing description宽# has the advantages of large size, high display quality, high brightness and wide, and wide angle, so the LED display has become a widely used large size display. In the following, the LED display is used as an example to describe the present invention. 200903415 υουοζζ-υυζ zi409twf.doc/n Example. It should be noted, however, that although the pixels in the display in the following embodiments are implemented by LEDs, in other embodiments, the pixels may be implemented by thin film transistors and liquid crystals, organic light emitting diodes (OLEDs), or other light emitting devices. Fig. 2 is a schematic block diagram of a display driver for LED state detection in accordance with a first embodiment of the present invention. Referring to Fig. 2, the display driver includes unit 201 and m drive circuits 203-1 to 203-m. The m driving circuits 203-1 to 203_m are connected in a cascade manner. If the drive circuit to each of 203-m can be driven! ^ Solid LED, then the display driver in Figure 2 can drive mxn LEDs. Each drive circuit has a data input (DAI) terminal and a lean output (DA〇) terminal. Each of the drive circuit moves to the displacement register in 203-m to shift the input data bit by bit from the data input (DAI) terminal data output (DA0) terminal. : The data input end of the road 203-1 is pre-assembled to the scan unit of the control unit 2〇1 and the scan data of the image data to be displayed is sent to the drive circuit via the scan data terminal. Move to the data output end of the muscle work-drive circuit 203-1 to the second drive circuit to the input terminal; the data drive output of the second drive circuit 2G3·2 is integrated into the I (four) circuit (not shown in Figure 2) The figure is like this. The most arrogant snow is defeated „ finer, the data output terminal of 钿一_ m is coupled to the receiving end of the control early 201. As in ^ 丨 _ ^ Wei system early 70 201 will scan data continuously A scan is sent to the drive circuits 203-1 to 203 mpw + 〇3_m, and a scan feed bit is transmitted in the parent clock (CLK). Each of the drive circuits MW to % in Fig. 2 can display an image on the LED ( For example, when _ is detected, these 2 200903415 υουοζζ-υυζ ^1409twf.doc/n ^I. When a new image (image #κ+1) 7G 201 has been sent to the drive circuit 2〇n Tianbei k control sheet , the control unit sends a flash lock (the displacement register in L 'plus the flash lock register in the -m to flash lock the scan = to the circuit 2 3-1 to the road 20 3-1 to 2〇3-m &Bei; bucket, and the parent-driver _ data to: = = = axis register ST: - state data = = material under - shift The temporary storage device sends the scanned data carrying the image service +2 to the driving circuit to the drive circuit to the terminal of the driving circuit solitary 1 to 203, and the terminal is continuously synchronized with a signal: When the _ device is turned on, the state of the Lm) detects the junction T " 'a. Therefore, the control unit 201 can only determine whether those turned on are in an abnormal state. The control unit 2 〇 1 can set the LED state and The corresponding scan data is stored in the pick-up device, and the state information is compared with the scanning feed to accurately determine the exact position of those abnormal LEDs. If the state of all LEDs must be detected, the control unit 2〇1 can The scan data carrying the white image data is sent to the drive circuits 203-1 to 203-m' to turn on all the LEDs. Since the LED status data will be continuously shifted to the control unit 2〇1 in synchronization with the clock jCLK) signal, The control unit 201 can count the clock (CLK) signal to those abnormalities 200903415 Υουοζζ-υυζ ζ i409twf.doc/n The exact position of the LED is precisely determined. Figure 3 is a schematic block diagram of the internal connection of the _ implementation_drive 2 in accordance with the present invention (2) =: LED boat circuit includes η bits: 0 _η, n _ register to 3〇3-η, drive measuring device 307, data input (DAI) terminal, two =) terminal, clock (CLK) input terminal and _αΑΤ) The second it" displacement register 3°Η to 3 (Π·η, the first displacement temporarily stores the data of the shift register; the child' where 1 is an integer and 0 <i<= n. ''=========================================================================================================== The shift register of the shift register, where J 疋 integer and 0 < j < = n. (4) The H-drive snubber device milk has its input terminal lightly coupled to the output terminal of the η 4 solid state, the sub-state 3〇3-1 to 3〇3_η, and its turn to n LEDs. Dog σ For the detecting device 307, its input terminal is lightly coupled to the LED, and the terminal is taken up to the n displacement registers 301-1 to 301-n. The data input (DAI) terminal of the drive circuit 203_1 is coupled to the input terminal of the first displacement temporary storage H 3G1-1. The data wheel of the drive circuit plus] = (dao) terminal _ is connected to the output terminal of the n-th shift register 3G1_n: the clock line of the ck wheel is supplied to the drive circuit 200903415 υουοζζ-υυζ zi409twf.d The 〇c/n ask lock (LAT) input terminal is coupled to the n question lock registers and the detecting device 307. 4 CLK and LATL are sent from the control unit to the drive circuit 2. The detecting means 3A in Fig. 3 can detect which of these shapes when the n LEDs 30M to 3〇9_n are displaying an image (for example, image #κ). When the scan data of the new image (®_K+1) has been sent to the shift registers 301-1 to 301-n, then the latch (LAT) signal is sent to the latch registers 303-1 to 303- n scans the data with a latch, and the drive buffer device 3 will drive the LEDs 309-1 to 309-n according to the flash lock temporary settlement 1 to 3〇3-n. While receiving the challenge lock signal, the detecting means 2 will carry the status data of the LED 3G9-1 xiao 3G9-n to the displacement temporary storage 301-1 to 3{) 1_η. When the scan data of the new image ^image #K+2) is moved via the data input (DAI) terminal, these LED status data will be shifted out in synchronization with the clock ((χκ) signal via the lean output (DAO) terminal. Figure 4 is a flow chart illustrating the LED state detecting method according to the first embodiment of the present invention. Referring to Figure 4, first, the control unit supplies the scan data to the shift register (S4〇1). Then, the drive buffer The device will drive the LED according to the scanning poor material (S403). The detecting device can detect the state of [ED to obtain the status data (S405). Then, the detecting device refreshes the temporary register with the status data (S4〇7). Finally, the status The data will be shifted to the control unit and the control unit can compare the scanned data with the status data to determine which LEDs are in an abnormal state (S409). The following examples are used to describe embodiments of the first embodiment of the present invention. 200903415 υουοζζ-υυζ zi409twf.doc/n The control unit 201 transmits the n-bit scan data (for example, 01...1) of the data as the image #^^ to the drive circuit 2034 of Fig. 3. That is, the logic Bit 0 Shifted to the first shift register 30] U1, the logical bit 1 • , the bit to the second shift register 301-2, ..., and the logical bit 1 is shifted to the 11th shift register 301- When a latch (LAT) signal is sent to the drive circuit 2〇3-1, the latch registers 303-1 to 303-n will scan the latch image #κ. Next, the buffer 裴The LED 309-1 to 309-η will be driven according to the latched register ('to the 303_n latched data. In this example, the scan data is η bits (讥...丨), so the latch is temporarily stored. After the 303-n latch scan data, the first LED 3094 is turned off, the second LED 309-2 is turned on, and the nth LED 3〇9_n is turned on. The detecting device 307 can detect the LED 309-1 which is currently displaying an image. To the state of 309-n. It should be noted that the result of the state detection is meaningful only for those LEDs that are lit. It is assumed that the second LED 3〇9_2 is abnormal. The detecting device 307 will find that the second LED 309-2 is abnormal, and Save the exception status bit in the second bit of the status data (for example, 'Logical bit for • ί/ clearly illustrates this embodiment, here will correspond to the LED when displaying the image The status data of the status is called status data #κ. When the n-th scan data of the next image (image #尺+1) has been sent to the shift registers 301-1 to 301-η, the latch is transmitted again ( The signal is to the drive unit 203-1. When the drive unit 203-1 receives the flash lock (LAT) signal, the detection unit 307 loads the status data #K into the shift registers 301-1 to 301-n. In this example, the second bit of state data #κ (which is a logic 0) is loaded into the second shift register 3〇1_2. When the image #尺+2 12 200903415 uouoj^uuz ^i409twf.doc/n the next n-bit scan data is sent to the displacement register 3〇M to 3〇j of the state data TM shift control unit 2 (H The scan data of the image service can be compared with the state data to determine which - LED is abnormal. The logic in the scan data = the corresponding LED is unblocked, and the _ LED secret test has a meaning. In this example, the figure Like the second bit of the scanned data obtained, it can be seen from the above that it is not necessary to switch the circuit and additional control, = into the LED status detection. Because the coffee is interrupted: the L ED status data is collected at the same time. Achieve the so-called instant minister: Θ = = = status data for comparison, can be; 枓 refresh the scratchpad and scan data and state light = bad poverty in the invention ___. Embodiment 'Lower a person skilled in the art FIG. 5 is a schematic block diagram of a display driver for detecting LED status according to the second embodiment (four) smart detection function of the present invention. Referring to FIG. 5, The display driver includes a control unit 5〇1 and m driving circuits 5 〇3乂= 503-m. m drive circuits 503-1 to 503-m are connected in cascade. If each of the drive circuits 503-1 to 503-m can drive n LEDs, then in FIG. The display driver can drive the mail to the solid LED. Each of the driving circuits 503-1 to 503-m has a data input (Dai) terminal and a data output (DAO) terminal. The displacement of each of the driving circuits 5034 to 5〇3_ melon The register can be shifted from the data input (DAI) terminal to the data output (the da 〇 terminal shifts the input data bit by bit. The first input terminal of the drive circuit 5 〇 3_1 is coupled to the scan data of the control unit 5 〇 1 The data output terminal 35 of the second moving circuit 503·1 is connected to the data input terminal of the second driving circuit; the data output end of the second driving circuit 5G3_2 is connected to the third f dynamic circuit (not shown in FIG. 3). The data input terminal; and so on. The final drive circuit 503-m 6 scoop data output is coupled to the receiving terminal of the unit 501. The control unit 5〇u♦ carries the scanned data of the data to be displayed continuously through its scanning data terminal Send to drive power ^ 50W to 503-m, send one in each clock (CLK) Trace data bit 0 Figure 5, with smart detection (SDT) signal. Wisdom detection of the starting point backup drive circuit 503-1 to 5〇3-m received by the control, 501 transmission, smart detection (SDT) signal At this time, the end point of the wisdom detection = is when the drive circuit 503" to the fresh-collar receives the first-latch (LAT) signal of the tracking detection signal. When the drive circuit receives the smart detection from 503-m (SDT) signal, the drive circuit 刈 ^ 14 200903415 060622-002 2l409twf.doc / n to 503-m drive buffer device will drive and turn on all led, 苴: drive device will be red bright LED _ small wealth coffee Therefore, when the wisdom check is carried out, the human remaining area knows any interruption of the image displayed in the display device, and can realize the so-called invisible detection L drive circuits 503-1 to 5〇3_m. The detecting device will detect the state of the LED when all the LEDs are lit, and load the state data carrying the LED state into the shift register in the drive circuits 503-1 to 5〇3_m. These LED status data are continuously shifted out to the control unit 5〇1 via the data output (DA〇) terminal of the drive circuit 5〇3_丨 to 5〇3_m in synchronization with the clock (CLK) signal after the smart detection (SDT) signal. . Since the status data of the LEDs will be continuously shifted to the control unit 5〇1 in synchronization with the clock (CLK) signal, the control unit 501 can count the clock (clK) signals to finely determine the exact positions of those abnormal LEDs. . Fig. 6 is a schematic block diagram showing the internal connection of a drive circuit (e.g., 5〇3_1 in Fig. 5) having a smart detection function according to a second embodiment of the present invention. Referring to FIG. 6, a driving circuit 503-1 for driving, for example, n LEDs includes n shift registers 60^ to 601-n, n latch registers 603-1 to 603-n, and driving buffers. Device 605, LEr) state detection circuit 607, data input (DAI) terminal, data output (DA〇) terminal, clock (CLK) input terminal, flash lock (LAT) input terminal, and smart detection (SDT) input terminal. For n shift registers 601-1 to 601-n, the data output terminal of the i-th shift register is coupled to the data input terminal of the (i+th) shift register, where i is an integer and 〇<i<n. 15 200903415 υου〇2/-υυζ zi409twf.doc/n For (10) ask the lock register age! Up to 6〇3_n, the output terminal box of the jth lock register is connected to the drive buffer device 6〇5 to drive the first coffee, and the input terminal of the jth lock register is combined to the jth displacement temporary storage. The output terminal of crying, whose tj is an integer and. The wheel of the (4)^ drive buffer device 6Q5, the input terminal of which locks the lock registers 603-1 to 603_n, and the Un to the n LEDs. (6), and its output terminal is lightly coupled to the device _ 'the wheel end of the hand to the coffee, and the scorpion is coupled to the n displacement register to 6 〇 1_n. The 1 μΪΪΪ Road Muscle 1 Keai Input (DAI) terminal is connected to the input terminal of the first-night temporary storage state 601-1. Drive ^Xie Yin η's turn ^ ^ input input dice to provide clock signal to drive ^ (Lat^ c

Ilk日(SDT)輸人端子耗合到檢測裝置607。 503]。 * SDT信號從控制單元發送到驅動電路 同财圖6中，智慧檢測過程是在當 接收__ (剛錢之_，料=動= 孤1接收到追隨智慧檢測信號後的第-_ (1=2 之時結束。當智慧檢測（SDT)信號由驅動電路5 1 =到時’驅動緩衝器裝£ 6G5將驅動並導通 _丨到=。檢測裝置6〇7可直接控制驅 = _以驅動並導通所有渐一到6。^ 16 200903415 z, 1409twf.doc/n 裝置6〇7可將（例如）所有的i载入到n個位移暫存哭6〇η 到601-η，以控制驅動缓衝器裝置6〇5來驅動並導通所有η 個LED 609-1到609-η。當驅動缓衝器裝置6〇5正在知慧 ‘ 檢測下點亮η個咖609]到609_η時，驅動緩衝哭裝^ 605將減小所有η個LED 到6〇9 η的亮度因此當 智慧檢測在進行中時，人眼無法感知到顯示器裝置中圖^ 的任何中斷。檢測裝置6〇7將在所有η個LED均點亮時檢 測n個LED 到6〇9-n的狀態，並將n個咖的狀離 資料載入到η個位移暫存器6〇M到6〇1_n。這些led狀 態資料將經由資料輸出（DA〇)端子與智慧檢測（sdt) 信號之後的時脈（CLK)信號同步地連續移出。 △圖7是說明根據本發明第二實施例的具有智慧檢測功 ，的LED狀態檢測方法的流程圖。參看圖7，首先，控制 單兀將智慧檢測信號發送到檢測裝置（S7〇1)。接著，檢 測裝置將控制驅動緩衝器裝置驅動並導通所有 jS703)。檢測裝置可檢測所有LED的狀態以獲得狀態資 C 料（S7〇5):接著’檢測裝置用狀態資料刷新位移暫^器 jS707)。最後，狀態資料將被移位至控制單元，且控制 單兀可根據狀態資料確定那些LED處於異常狀態⑻)。 圖8是根據本發明第二實施例的智慧檢測過程之時序 圖。在時序圖中緣示時脈（CLK)、資料輸入（Dai)、問 鎖（LAT)、智慧檢測（SDT)和資料輸出（DAO)信號。 參看圖8，其是使用可驅動八個LED的驅動電路作為實 例。智慧檢測過程是在當驅動電路接收到智慧檢測 17 200903415 υουοζζ-υυζ zi409twf.doc/n 信號之時開始’且在當驅動電路接收到追隨智慧檢測 (SDT)信號後的第一閂鎖（LAT)信號之時結束。 當驅動電路接收到SDT信號時，將導通所有八個 LED ’且將檢測所有八個LED的狀態。接著，八個L]ED 的狀態資料將載入到八個位移暫存器，以經由DA〇信號 移出到下一裝置，所述下一裝置可以是控制單元或另一驅 動電路。DAO彳§號將與時脈（CLK)信號的上升邊緣同步， 如圖8所示。如果邏輯“1”表示正常LED狀態且邏輯“〇，，表 示異常LED狀態，那麼圖8中的DA〇信號表明第2led 和第5 LED異常，其巾八個LED的:請是峨驅動電路 的資料輸入（DAI)端子到資料輸出（DA〇)端子的次序。 儘管本發明的以上實施例使用LED顯示器作為實 例，但應注意，本發明中揭示的方法和顯示驅動器可適用 於任何種類的平板顯示器。 所屬領域的技術人員將瞭解，可在不脫離本發明的範 ，或精神的情況下對本發日㈣結構作丨各雖改和變化。 鐾於，上内容’輕本發明涵蓋歸屬於所㈣請專利範圍 及其等效物的範圍⑽對本發賴作的修改和變化。 【圖式簡單說明】 圖1疋用於像素狀態檢測的傳統顯示驅動器的示音 塊圖。 一 圖2是根據本發料—實施例的驗led狀態檢測之 顯不驅動器的示意方塊圖。 圖3是根據本發明第—實施例的LED驅動電路之内部 18 200903415 υουοζζ-υυζ ^i409twf.doc/n 連接的示意方塊圖。 法的說明根據本發明第—實施例之啦狀態檢測方 LED I ^^ ^ ^ % ^ ED狀,之,、„員不驅動器的示意方塊圖。 圖6是根據本發明第二實施例之具有 LED驅動電路之内部連接示意方塊圖。 以心的 圖7是說明根據本發明第二實施例之具 能的LED狀態檢測方糾流程圖。 測功 圖8是根據本發明第二實施例的智慧檢測過程 圖。 、时序 【主要元件符號說明】 101 :控制單元 103-1, l〇3-2，..i〇3-m :驅動電路 201 :控制單元 2〇3-l，2〇3-2...2〇3-m :驅動電路 301-1，301-2...3〇ι_η:位移暫存器 303-1，303-2...303_n:閱暫存器 305.驅動緩衝楚置 307:驅動裝置 501 :控制單元 601 1,601-2...6〇ι_η:位移暫存 閃鎖暫存器 605·驅動緩衝裝置 607:檢測裝置 19The Ilk Day (SDT) input terminal is consumed by the detection device 607. 503]. * The SDT signal is sent from the control unit to the driver circuit in Figure 6. The smart detection process is when receiving __ (just money_, material=moving = lone 1 after receiving the follow-up wisdom detection signal -_ (1 When the value of =2 is over, when the smart detection (SDT) signal is driven by the drive circuit 5 1 =, the drive buffer is charged and 6G5 will be driven and turned on _丨 to =. The detection device 6〇7 can directly control the drive = _ to drive And turn on all the fades to 6. ^ 16 200903415 z, 1409twf.doc / n The device 6〇7 can load (for example) all i into n displacements, temporarily crying 6〇η to 601-η, to control the drive The buffer device 6〇5 drives and turns on all of the n LEDs 609-1 to 609-n. When the driving buffer device 6〇5 is lighting the n coffee 609] to 609_η Buffering the crying ^ 605 will reduce the brightness of all n LEDs to 6〇9 η so when the smart detection is in progress, the human eye cannot perceive any interruption in the display device. The detection device 6〇7 will be at all Detecting the status of n LEDs to 6〇9-n when n LEDs are lit, and loading the data of n coffees into n displacement registers 6〇M to 6〇1_n These led state data will be continuously shifted out in synchronization with the clock (CLK) signal after the smart detection (sdt) signal via the data output (DA〇) terminal. Δ FIG. 7 is a diagram illustrating smart detection according to the second embodiment of the present invention. Flowchart of the LED state detection method of the power. Referring to Fig. 7, first, the control unit transmits the smart detection signal to the detecting device (S7〇1). Then, the detecting device will drive the driving buffer device to drive and turn on all the jS703) The detecting device can detect the state of all the LEDs to obtain the state information (S7〇5): then the 'detecting device refreshes the displacement device jS707 with the state data. Finally, the status data will be shifted to the control unit and the control unit will determine which LEDs are in an abnormal state (8) based on the status data. Figure 8 is a timing diagram of a smart detection process in accordance with a second embodiment of the present invention. The clock (CLK), data input (Dai), challenge lock (LAT), smart detection (SDT), and data output (DAO) signals are shown in the timing diagram. Referring to Figure 8, a drive circuit that can drive eight LEDs is used as an example. The smart detection process begins when the driver circuit receives the smart detection 17 200903415 υουοζζ-υυζ zi409twf.doc/n signal and the first latch (LAT) after the drive circuit receives the follow-up smart detection (SDT) signal. The signal ends. When the driver circuit receives the SDT signal, all eight LEDs will be turned on and the status of all eight LEDs will be detected. Next, the status data for the eight L]EDs will be loaded into the eight shift registers for movement to the next device via the DA〇 signal, which may be the control unit or another drive circuit. The DAO 彳§ number will be synchronized with the rising edge of the clock (CLK) signal, as shown in Figure 8. If the logic "1" indicates the normal LED state and the logic "〇" indicates the abnormal LED state, then the DA〇 signal in Figure 8 indicates that the 2nd and 5th LEDs are abnormal, and the towel is eight LEDs: please be the driver circuit Order of data input (DAI) terminal to data output (DA〇) terminal. Although the above embodiment of the present invention uses an LED display as an example, it should be noted that the method and display driver disclosed in the present invention can be applied to any kind of tablet. A person skilled in the art will appreciate that the structure of the present invention may be modified and changed without departing from the scope of the invention, or the spirit of the present invention. (4) The scope of the patent and the scope of its equivalents (10) Modifications and changes to the present application. [Simplified illustration of the drawings] Figure 1 shows a block diagram of a conventional display driver for pixel state detection. Figure 2 is based on BRIEF DESCRIPTION OF THE DRAWINGS - Figure 3 is a schematic block diagram of a LED driver circuit in accordance with a first embodiment of the present invention. 200903415 υουοζζ -υυζ ^i409twf.doc/n Schematic block diagram of the connection. Description of the method According to the first embodiment of the present invention, the state detecting side LED I ^^ ^ ^ % ^ ED is in the form of a schematic block of the driver. Figure. Figure 6 is a schematic block diagram showing the internal connection of an LED driving circuit in accordance with a second embodiment of the present invention. Figure 7 is a flowchart illustrating the LED state detection method according to the second embodiment of the present invention. Drilling Figure 8 is a diagram of a smart detection process in accordance with a second embodiment of the present invention. , Timing [Major component symbol description] 101: Control unit 103-1, l〇3-2, ..i〇3-m: Drive circuit 201: Control unit 2〇3-l, 2〇3-2... 2〇3-m: drive circuit 301-1, 301-2...3〇ι_η: shift register 303-1, 303-2...303_n: read register 305. drive buffer 307: Drive device 501: control unit 601 1, 601-2 ... 6〇ι_η: displacement temporary flash lock register 605 · drive buffer device 607: detection device 19

Claims (1)

200903415 υουοζζ-υυζ z^Ogtwf.do^ 十、申請專利範固： h顯===;之像素狀態的方法，所述平板 . /、有暫存益並用於驅動所述平板顯示器 、象素的顯示驅動器，所述方法 將掃描資料提供到所述暫存器；I括 使用所述掃描資料驅動所述像素； 檢測所述像素狀態以獲得狀態資料； 用所述狀態資料刷新所述暫存器；以及 掃描：糾與所述狀態資料進行比較，以確定 斤处像素疋否處於異常狀態。 勺，t晴專利範圍第1項所述的方法，其中所述暫存 =。:η固位移暫存益以驅動n個像素，所述位移暫存哭 輪^子、：#料輪出舒和時脈; 'L 倾輸人端子’所述暫存⑽時脈端子接收時脈J #u’弟1位移暫存器的資料輸入端子接收所述掃描資料。 你主3.·如申請專利範圍第2項所述的方法，其中檢測所述 像素狀態以獲得所述狀態資料包括： 檢測所有所述像素中的有效像素狀態；以及 當第k像素處於異常狀態且被檢測到時，在所述狀 態資料的第k位元保存異常狀態位元，其中自然數 且 0<=k<=n ° 4.如申請專利範圍第3項所述的方法，其巾用所述狀 態資料刷新所述暫存器包括： 20 200903415 r409twf.doc/n 刷新第'位移暫存器。 是發光二極體。41項所达的方法’其中所述像素 6，-種檢解板顯抑之像素狀態的 像素的所述平板顯亓·哭^^ 包含η個 具有η麻移暫所物轉動器 料，所述方法i 儲存麟轉n個像素的掃描資 C 藉由所述驅動益以致能所述η個像素； 檢測所述η個像素狀態以獲得η狀態資料； 用所述η狀怨資料刷新所述“固位移 、 根據所述η狀態資料確定所述n 處於異常狀態， t中那-像素 其中η是自然數。 2申請專利範圍第6項所述的方法，其中每 子裔包含資料輸入端子、資料輸出端子和時脈端子， 哭二=存器的資料輪出端子耦合到第(i+1)位移暫存 二，枓輸人端子’所述暫存器的時脈端子接收時脈信 ^技弟、1位移暫存$的資料輸人端子根據所述時脈信號 知週期中依次接收η位元掃描資料。 德香8、ΐΪ申料利範圍第6柄述的方法，其巾檢測所述 像素以獲得11位元狀態資料包括： 虽第k像錢於異常狀態且被撿測到時，在所述狀 =料的第k位元保存異常狀態位元，其中^自然數 且 0<=k<=n 〇 9’如申5月專利範圍第8項所述的方法，其巾用所述狀 21 200903415 -1409twf.doc/n 態資料刷新所述暫存器包括. 態資料的第k位元刷 是發=專利範圍第6項所述的方法，其中所述像素 合到-顯示器的多個像素’ m個驅動電路，所述驅# + @ & 資料輸入端子；動电路中的每—者包括： 資料輸出端子，並中筮· 耦合到第㈣驅動電路的資料輪人=的資料輸出端子 素；η個·_端子，其分_合_述像料的個像 第_暫存器 m、n和i是自然數且〇<i<=n;弟驅料子，其中 其中=裝==測端子和，出端子， 破；η < 、 、斤I檢測端子分別輕合到所述驅動 位移暫存‘述所述輪出端子分W到所述 料輸出“述:=:素的狀態，並將狀態資 控制單元，其包括接收端子 ς斤述掃描資料端付合到第i驅動 子，且所述接收端子耦合到第 、貝科輸入舳 子以依次接收所述狀態資料的資料輸出端 寸具史所述第1驅動電路的 22 200903415 --409twf.doc/n 資料輸入端子根據時脈信號從所述控制單 貧料端子依次接收所述掃描資料。 、R扣插 專概園第〃項所述的顯示㈣器，其進 所述嶋存器中的每—者⑹ 問鎖輸出端子；以及 到所=二其接::：暫，^ 動端子，所述第j 的門鎖輸出端子輕合到第j驅 位移暫存器^端— -步包括:合二顯示驅動器，其進 之間的驅動緩衝器。 暫存°。與所述第j驅動端子 所述檢測顯示驅動器，其中 2檢測信號以智慧檢測端子接收 別輪出到所述η個位移暫存器，、置將η位元特定資料分 像素，所述檢測裝資料來致能所述 貧料輪出到所述位移暫存器。個像素並將η特定詰果 15.如申請專利範圍第u 斤述多個像素是多個發光二極體/喝顯示驅動器，其中 23200903415 υουοζζ-υυζ z^Ogtwf.do^ X. Patent application: h ==== The method of pixel state, the tablet. /, has temporary storage and is used to drive the flat panel display, pixel a display driver, the method providing scan data to the register; wherein: driving the pixel using the scan data; detecting the pixel state to obtain status data; and refreshing the register with the status data And scanning: correcting the state data to compare to determine whether the pixel is in an abnormal state. The method of claim 1, wherein the temporary storage =. : η solid displacement temporary storage to drive n pixels, the displacement temporarily stores the crying wheel ^,: #料轮出舒和脉脉; 'L 倾人 terminal' the temporary storage (10) clock terminal receiving The data input terminal of the pulse J #u'di 1 shift register receives the scanned data. The method of claim 2, wherein detecting the pixel state to obtain the state data comprises: detecting an effective pixel state in all of the pixels; and when the kth pixel is in an abnormal state And when detected, the abnormal state bit is saved in the kth bit of the state data, wherein the natural number is 0 <=k<=n ° 4. The method as described in claim 3, the towel Refreshing the register with the status data includes: 20 200903415 r409twf.doc/n Refreshing the 'displacement register. It is a light-emitting diode. The method of 41 items, wherein the pixel 6 and the pixel of the pixel state of the detection board are displayed in the pixel state, and the crying ^^ includes n η 麻 shift temporary rotator materials, The method i stores a scan resource C of n pixels, and the n pixels are enabled by the driving; detecting the n pixel states to obtain η state data; refreshing the data with the η 怨 资料"Solid displacement, determining, according to the η state data, that the n is in an abnormal state, and wherein n is a natural number in the t. The method of claim 6 wherein each of the children includes a data input terminal, Data output terminal and clock terminal, crying = data storage terminal of the memory is coupled to the (i+1)th shift temporary memory 2, and the input terminal of the register is received by the clock terminal of the register The data input terminal of the 1st shift temporary storage $ receives the η-bit scan data sequentially according to the clock signal. The method of the sixth-hand method of the Dexiang 8, the application of the scope of the application, the towel detection institute The pixel is obtained to obtain the 11-bit status data including: In the normal state and detected, the abnormal state bit is saved in the k-th bit of the state, where ^ natural number and 0 <=k<=n 〇9', such as the fifth patent scope of the May patent In the method, the towel refreshes the register with the state 21 200903415 -1409 twf.doc/n data, and the k-th bit brush of the state data is the method described in item 6 of the patent scope, Wherein the pixel is coupled to a plurality of pixels of the display', and the drive input terminal is included in the dynamic circuit. Each of the dynamic circuits includes: a data output terminal, and is coupled to the first (4) The data output terminal of the drive circuit = the data output terminal element; the η·· terminal, the image of the _ _ _ the image of the image _ register m, n and i are natural numbers and 〇 < i <=n; brother drive material, where ================================================================================================== To the material output "description: =: the state of the prime, and the state control unit, which includes the receiving terminal, the scanning data end The i-th driver, and the receiving terminal is coupled to the first and the Bec input dice to sequentially receive the data of the status data. The first driving circuit of the first driving circuit 22 200903415 --409twf.doc/n The input terminal sequentially receives the scan data from the control unit lean terminal according to a clock signal. , R buckle inserted in the special equipment (4) display, the four (4) into the buffer, (6) ask the lock output terminal; and to the = two connected::: temporary, ^ terminal The jth door lock output terminal is lightly coupled to the jth drive displacement register terminal. The step includes: combining the display driver and driving the buffer between the two. Temporary storage °. And the detection display driver of the jth driving terminal, wherein the detection signal is received by the smart detection terminal to the n displacement register, and the n-bit specific data is divided into pixels, and the detection device is mounted Information to enable the lean material to exit to the displacement register. Pixels and η specific results 15. As claimed in the patent scope, the plurality of pixels are a plurality of LED/drink display drivers, 23 of which
TW096124016A 2007-07-02 2007-07-02 Device and method for driving light-emitting diodes TW200903415A (en)

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JP2007276920A JP2009015281A (en) 2007-07-02 2007-10-24 Method for detecting pixel status of flat panel display and display driver thereof
KR1020070107596A KR100938620B1 (en) 2007-07-02 2007-10-25 Method and method for detecting pixel status of flat panel display
EP08250022A EP2012298A3 (en) 2007-07-02 2008-01-03 Method for detecting pixel status of flat panel display and display driver thereof

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