TWI299843B - Display device and gray-scale voltage generating device thereof - Google Patents

Display device and gray-scale voltage generating device thereof Download PDF

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Publication number
TWI299843B
TWI299843B TW094135846A TW94135846A TWI299843B TW I299843 B TWI299843 B TW I299843B TW 094135846 A TW094135846 A TW 094135846A TW 94135846 A TW94135846 A TW 94135846A TW I299843 B TWI299843 B TW I299843B
Authority
TW
Taiwan
Prior art keywords
voltage
gray
gamma
gray scale
display
Prior art date
Application number
TW094135846A
Other languages
English (en)
Other versions
TW200715234A (en
Inventor
Ching Wu Tseng
Original Assignee
Novatek Microelectronics Corp
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 Novatek Microelectronics Corp filed Critical Novatek Microelectronics Corp
Priority to TW094135846A priority Critical patent/TWI299843B/zh
Priority to US11/306,631 priority patent/US20070085792A1/en
Publication of TW200715234A publication Critical patent/TW200715234A/zh
Application granted granted Critical
Publication of TWI299843B publication Critical patent/TWI299843B/zh

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3225Control 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 an active matrix
    • G09G3/3233Control 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 an active matrix with pixel circuitry controlling the current through the light-emitting element
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3275Details of drivers for data electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • G09G2300/0842Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/029Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0673Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02Details of power systems and of start or stop of display operation
    • G09G2330/028Generation of voltages supplied to electrode drivers in a matrix display other than LCD

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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)

Description

1299843 17250twf.doc/g 九、發明說明: 【發明所屬之技術領域】 且特有關於—種顯示器及其灰階電壓產生裝置, =別『有關於一種可平移迦瑪(一 失真之顯示器及其灰階電壓產生裝置。 【先前技術】 、 "近來’傳統陰極射線官顯示器之大部分應用已經被各 ,型平板顯示賴取代。常見的平板顯示器包括液晶顯示 益、有機發光二極體顯示器、電漿顯示器等。各類型平板 顯示器中大多具有·電壓產生震置,以便則共多個不同 準位之灰階電壓。以下將以有機發光二極體顯示器為例。 有機發光二極體顯示器和液晶顯示器皆可以主動矩陣 驅動方式來驅動顯示面板之次像素(sub_pixel)。前者是 f制流過有機發光二極體之電流量以呈現不同的灰階,液 晶顯示器則通常以極性反轉的方式來驅動液晶顯示面板' =電壓差的大小決定灰階。然而,對於非發光源的液晶 曰料來說,需要使用背光源配合液晶兩端壓差所決定之液 晶透光率而呈現不同的灰階。 ’ 在新一代的顯示系統中,有機發光二極體顯示器為自 光源並不需背光板,而是由流過有機發光二極體之電荷 在,以、決定其灰階大小或由導通二極體時間的長短來決定 f亮度。如圖1所示為一般有機發光二極體顯示器之顯示 =元^次像素)電路圖。請參照目1,在此習知的驅動有 光—極體顯示益的方式中,可以藉由使用不同電墨加 1299843 17250twf.doc/g 在驅動電晶體T2之閘極上而控制流過有機發光二極體 OLED之電流大小。當藉由掃描訊號SR使開關電晶體^ 導通時,源極驅動器(未!會示)輸出之灰階電壓傳送到驅 動電晶體丁2之閑極,並且儲存於儲存電容&中。依昭儲 存電容csg所儲存之灰階電壓即能決定驅動電晶體T2=汲 源電流IsD的大小,使得有機發光二極體OLED產生不同 的亮度。 β當(電1卿_灰階電壓)> 驅動電晶體T2之邊界雷 Μ %時,驅動電晶體Τ2導通且二極體發光,也 J = f將獲致不同之驅動電晶體導通阻抗二 f β來控制&度。但問題是在不同顯 ^ 界電壓值並不容易控制在相_大小, 板上之驅動電晶體的邊界電壓必存在-些差ί θ不 的。因此不論源極驅動器輸出 g二免 顯示面板之驅動電晶體之邊界電壓的不同二因: 不面板上亮度的差異,更嚴重 疋成顯 在某些狀況T會有漏電的情形。& °卩分的顯示面板 為解決這種狀況,習知的 輪出之灰階電壓,以補償邊屙極驅動器 繪示習知之有機發本一_§ :土之不冋。5月參考圖2為 含喻電㈣塊圖,其包 圖3繪示為習知之迦瑪ϋ源極驅動器25。 1299843 17250twf.doc/g 性’藉由調整迦瑪調整電路21來調整 影像資料與灰階電壓之對應關係瑪曲線(即 瑪,vG1〜vGn之準位。灰階電壓斤輸出之% 調整電路21所輪出之迦瑪電壓vG1〜>十23即依照迦瑪 同準位之灰階電壓為V v。:來產生更多個不 接收之影像資料而於灰階電器25則依據所 應之灰階,以驅動顯示面板L细中選擇與其相對 對於同一類型之顯示面板而言 ^然而不同顯示面板上各個驅動電晶示特性相 =異,因此必須將已調校完成之必存 千私(在不改變制先鱗的形狀下)“線31做適當 =異。習知作法是再:域由H償其邊界電堡 使其輪出之灰階電壓v 正夕個硪點的電 ^ dv'-vm, =失真。理想上,電位差牝嗜庶之瑪曲線平移而 只際情形是電位差dV!〜dv J1 ^皮此相等。然而, 2、^_紅《驗好之誤差。由 曰使原先調校好之迦瑪曲線失直。 21,因此勢必 【發明内容】 〜 ====,,產生 ;真並可,先調校—二= 1299843 17250twf.doc/g 基於上述及其他目 裝置,其包括參考Κ、、β料明提出一種灰階電壓產生 壓輸出單元。參考:=、、曲線平移控制單元以及灰階電 平移控制單元電性供多個原本參考電壓。曲線 本參考電壓之準位偏丄考電壓源,其可將所接收之原 壓。又灰階電壓輪出電壓而輸出多個平移參考電 元,其可依據該轉接至曲線平移控制單 厂卿_動器 上下平移灰階電壓輪屮|_乃正千私電壓的大小而決定 依照本發二2:^=(G_a)曲線的多少。 上述之曲線平移控制單電驗生裝置, 自將所接收之多個;^本夫/ ^括夕個加法器,用以各 加,以輪出多個平移參考電壓。 〃千私電壓相 依恥本發明的一實施 述之灰階電_出單元包括迦瑪上 器。迦瑪調整電路係電性電屢產生 據多個平移炎老带段 i 、 私4工制單元’且依 哭"n 生並輪出多個迦瑪電壓至灰階電 &產生态。灰階電壓產生哭 电土玍次丨白% 可以包括-㈣自技★翻整電路並且 灰階電m。 ’用以將所接收的迦瑪電壓分麼而產生 =另-觀點來看,本發明提出一 2板、顯示驅動器以及上述之灰 以詈。= 個灰it 好辦齡考電數可難並輸出多 個灰’亚且將灰階錢輸出至顯示驅動器,之^ 1299843 17250twf.c}〇c/g =頁動器驅動顯示面板。其令顯示面板可為一液晶顯 不面,或一有機發光二極體顯示面板。 與習知的顯示驅動器相較,習知技藝須以複雜的調整 奸二、、土另!/周整多個節點)以達成修正迦瑪曲線之效果,如 /可姥會使原本所設定的迦瑪曲線變形(失直)。本 =直接平移參考電愿源所提供之原本獅:而不 j其原先設定,因此可以輕易地依照需要而平移迦瑪 ^ ’部可保持原先調校好之迦瑪曲線而不失真,可達成 補^不r批顯示面板之鶴電晶體之臨界雜差異的目的 亚進而增加量產時之產品良率。 為讓本發明之上述和其他目的、特徵和優點能更明顯 易,,下文特舉較佳實施例,並配合所附圖式,作詳細說 明如下。 【實施方式】 為了實施例錢說明起見,町齡面板將以液晶顯 不反或有機發光二極體顯示面板為例,顯示驅動哭將以 源極驅動器為例,且t、i、n、m皆為大於—的整數。 請參考圖4綠示為應用本發明之一實施例之示意圖, 其中本發明之顯示器棚包括灰階電壓產生裝置侧、源 極土驅,器450與液晶顯示面板或有機發光二極體顯示面板 、'-繪不)。其中灰階電壓產生裝置41〇包括有春者電壓源 420、曲線平移控制單元430與灰階電壓輸出單元44〇。更 進-步來說’灰階電壓輸出單元44〇包含迦瑪雕電路441 及灰階電壓產生器442。 1299843 17250twf.doc/g 編妾ίϋΖ,—實?例中’其中參考電壓源42G可電性 '· “私控制單元430,迦瑪調整電路441電性叙 平移,單元43()與灰階電壓產生器442之間, 極idt裔442則電性耦接於迦瑪調整電路441與源 干面=r之間,接下來源極驅動器彻將驅動液晶顯 不面板或有機發光二極體顯示面板。 原本之較佳實施例中,參考電壓請提供多個 移控制單元Vst至夕曲線平移控制單元43 〇,又曲線平 移電界v :依據多個原本參考電壓vsi〜Vst與-平 k供多個平移參考電壓vR1〜VRi,接下來迦 多 ==將:據多辦移參考翅一提供 迦瑪1 ^ ^〜VGn,隶後灰階電壓產生器442將依據 ’、、电土 G】Vg«而提供多個灰階電壓νε1〜V 。 參考圖5為灰階電星產生器4d 圖’可看出灰階電壓產生哭44?七人^ η、㈣ 來自迦瑪調整電路441 串’用以將 將會接收多個灰p_v;:vVg=m=源極驅動器· :與之相對輪隱。二 素的㈣階電龜顯示峰上之各個次像 電心m ’亚依此控制次像素中驅動電晶體的沒源 “大小,*達到控制次像素之亮度的目的。〜n原 7 示為本發私另—實麵之示意圖。圖 為本舍明之避瑪曲線調整方式。請同時參考圖6盘 10 1299843 17250twf.doc/g 圖7其中本發明之顯示器600包含有一灰階電壓產生裝 置6K)、源極驅動器65〇及液晶顯示面板或有機發光二極 麵示面板。其巾灰階電壓產生裝置61G包含有參考電壓 源620、曲線平移控制單元63〇及灰階電壓輸出單元64〇。 灰階電>1輪出單it 64G尚包含迦瑪調整電路641及灰階電 壓產生态642。又顯示面板包含多個次像素,每一個次像 素均被源極驅動器650對應地驅動著。 ^中顯不器_、灰階電壓產生裝置61〇、源極驅動器 650及如面板、參考f壓源㈣、曲線平移控制單元㈣、 壓輸出單元64〇、迦瑪調整電路⑷、灰階電壓產生 :拖降^ ^ ^個晝素之間的電_接關係及多個電壓間的 :广與顯示器400中的電性耦接關係及多個電壓間的 Ιτ換清开>相似,故在此不贅述。 ⑶2在^平移控制單元63G中包含有第—加法器 ==二加法器632,其可分別將原本 ,之士準位與平移電麗Vgb之準位相力口(或相減),= 疋同日宁使原本參考電屙v 乃v 住 =接收來自曲線平移靖元6二3:= 。ΓΓ n灰階電壓產生器642。接下來,亦階 電土產生斋642接收多個迦瑪電壓v 電阻串將其分壓,產生多個灰階電 v〜°;亚、、^自身的 雷壓V Λ/七、隹 土 g1 Vgm。因此灰階 gl〜vgm之準位將同時具有平移電壓I的位移,但 1299843 17250twf.doc/g ^會影響迦碼調整電路6 由上述可知此迦碼曲 元°又疋好之迦瑪曲線71。 移電壓乂仙的距離。 不失真的情況下平移一平 電壓vGB‘小^可上移或下移-平移 曲線方式並增加量產時之產品、=樣式。如此可簡化調整 電壓變化(vGB)之平移參考 st以產生多個相同 厂堅vR::VRi輸出至趣瑪調=路==4== 考電 瑪電屢VG1~VGn,再輸入至灰階電壓 ς固迦 經由其作用便能得到灰階電愿ν ,^二=42亚 移的迦瑪_。 W此便可得到平 比較圖7朗3,其巾圖3為_麵整迦瑪曲㈣ ^各點,並且各點的調整幅度可能不一致,此時會導致曲 線的失真而影響到顯示面板的表現特性。反觀本發明之 Ρ皆電虔產生裝置可以藉由控制曲線平移控制單元43〇及 630之平移電壓Vgb的大小,而達到如圖7中調整迦瑪曲 果’如此不但沒有失真的問題並且簡化了調整曲 雖然本發明已以較佳實施例揭露如上,然其並非用以 限定本發明,任何熟習此技藝者,在不脫離本發^之精神 和範圍内,當可作些許之更動與潤飾,因此本發明之保蠖 範圍當視後附之申請專利範圍所界定者為準。 ^ 12 1299843 17250twf.doc/g 【圖式簡單說明】 圖1繪示為習知之有機發光二極體顯示器之顯示單元 , (次像素)電路圖。 圖2繪示為習知之顯示器之電路方塊圖。 ' 圖3繪示為習知之迦瑪曲線調整方式。 . 圖4繪示本發明之一實施例之電路方塊圖。 圖5繪示為本發明一實施例之灰階電壓產生器的詳細 電路圖。 ® 圖6繪示為本發明之另一實施例之電路方塊圖。 圖7繪示為本發明實施例之迦瑪曲線調整方式。 【主要元件符號說明】 T1 :開關電晶體 T2 :驅動電晶體 OLED :有機發光二極體 Csg :儲存電容 IsD ·〉及源電流 • SR:掃描訊號 20 :習知之顯示器 21 :迦瑪調整電路 23 :灰階電壓產生器 25 :源極驅動器 400、600 :顯示器 410、610 :灰階電壓產生裝置 420、620 :參考電壓源 13 1299843 17250twf.doc/g 430、630 :曲線平移控制單元 440、 640 :灰階電壓輸出單元 441、 641 :迦瑪調整電路 442、 642 :灰階電壓產生器 450、650 :源極驅動器 631 :第一加法器 632 :第二加法器 V(3B :平移電壓
31、71 :迦瑪曲線 Vs广Vst :原本參考電壓 Vri〜VRi : 平移參考電壓 VgI〜V(3n ·迦瑪電壓 Vgi〜vgm :灰階電壓 dVfdVm :電壓差
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Claims (1)

1299843 17250twf.doc/£ 十、申請專利範圍: 1. 一種灰階電壓產生 -顯示驅動器,該灰階電壓產生=多個灰階電髮給 —2:壓源,用以提供多個原:參考電麗; 所接收之該些原本參考電麗之準位“ 用以將 出多個平移參考電壓;以及 夕I以輸 一灰階電_出單元,輕接至 用以依據該些平移夹者带颅;立1 i十移&制早兀, 該顯示驅動器%產亚輸出該些灰階電麗給 其中藉由調整該平移電屡而平 之迦瑪(Gamma)㈣。 ^輪出早tl 2. 如+料·目帛〗項料之 ===:多個r法器,用二 各自輪出該些平移“其ΐ之ί奸移電*相加,以 3. 如申請專利朗第〗項所述之灰階 其中該灰階電壓輪出單元包括: 玍表置 -迦瑪調整電路’搞接至該曲線平移控制單元,用以 =该些平移參考電壓而產生並輸出多個迦瑪電壓,並且 調整該些迦瑪電壓之準位;以及 -灰階電壓產生器,接至該迦瑪調整電路,用以依 6亥些迦瑪電壓而產生並輸出該些灰階電壓。 15 1299843 17250twf.doc/g · %專利範圍第3項所述之灰階電壓產生梦晉, 壓產生器包括一電阻串,用以將該些迦瑪電 壓刀壓而產生該些灰階電壓。 5.—種顯示器,包括: 一顯示面板; 粟,壓產生裝置’用以調整並輪出多個灰階電 _壓產生裝置更接收一平移電壓,用以依 據μ千私電屋而偏移該些灰階 該平移電壓而平移該灰階心二進而精由调整 曲線;以及 亥灰1產生&置之迦瑪(Gamma) 裝置妾=該;:面板㈣^ 應之灰階電二Si:::選擇該些灰階謝對 電厂 ==圍第5項所述之顯示器,其蝴階 共多個原本參考㈣; 據該平移電壓二:心本耦至該參考電壓源,用以依 平移參考電考電屋之準位,以輸出多個 一灰階電壓輸出單元,耦接 用以依據該些平移參㈣m °、A m平移控制單元’ 該顯示驅動器。 ^I土,Ί一並輪出該些灰階電壓給 7.如申請專利範圍第6項 平移控制單元包括多個加 ^不益’其中該曲線 σ用以各自將所接收之該些 16 1299843 17250twf.doc/g 原本參考電壓其中之一與該平移電壓相加,以各自輸出該 些平移參考電壓其中之一。 8. 如申請專利範圍第6項所述之顯示器,其中該灰階 電壓輸出單元包括: 一迦瑪調整電路,耦接至該曲線平移控制單元,用以 依據該些平移參考電壓而產生並輸出多個迦瑪電壓,並且 調整該些迦瑪電壓之準位;以及 一灰階電壓產生器,耦接至該迦瑪調整電路,用以依 據該些迦瑪電壓而產生並輸出該些灰階電壓。 9. 如申請專利範圍第8項所述之顯示器,其中該灰階 電壓產生器包括一電阻串,用以將該些迦瑪電壓分壓而產 生該些灰階電壓。 10. 如申請專利範圍第5項所述之顯示器,其中該顯示 面板包括一液晶顯不面板。 11. 如申請專利範圍第5項所述之顯示器,其中該顯示 面板包括一有機發光二極體顯示面板。 17
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