TWI299843B - Display device and gray-scale voltage generating device thereof - Google Patents
Display device and gray-scale voltage generating device thereof Download PDFInfo
- 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
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Classifications
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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]
- G09G3/3225—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 an active matrix
- G09G3/3233—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 an active matrix with pixel circuitry controlling the current through the light-emitting element
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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]
- G09G3/3275—Details of drivers for data electrodes
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active 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
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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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
- G09G2320/02—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
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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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
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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
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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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
- 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
- G09G2330/028—Generation 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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TWI299843B true TWI299843B (en) | 2008-08-11 |
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US8803922B2 (en) * | 2007-05-30 | 2014-08-12 | Apple Inc. | Methods and apparatuses for increasing the apparent brightness of a display |
TW200908700A (en) * | 2007-08-10 | 2009-02-16 | Novatek Microelectronics Corp | Gamma reference voltage generate device and method thereof and gray level voltage generate device |
KR101325978B1 (ko) * | 2008-12-16 | 2013-11-07 | 엘지디스플레이 주식회사 | 유기전계 발광 디스플레이 장치용 구동회로 |
TWI603305B (zh) * | 2013-09-27 | 2017-10-21 | 鴻海精密工業股份有限公司 | 顯示裝置、拼接式顯示器及顯示面板 |
TWI517120B (zh) * | 2014-04-24 | 2016-01-11 | 瑞鼎科技股份有限公司 | 源極驅動電路及電阻重整方法 |
CN109830210B (zh) * | 2019-01-25 | 2021-03-12 | 合肥鑫晟光电科技有限公司 | 置位电压生成单元、置位电压生成方法和显示装置 |
CN113506535B (zh) * | 2021-07-28 | 2023-04-11 | 合肥维信诺科技有限公司 | 伽马调试的绑点选取方法、装置、设备及介质 |
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JPH11175027A (ja) * | 1997-12-08 | 1999-07-02 | Hitachi Ltd | 液晶駆動回路および液晶表示装置 |
US6593934B1 (en) * | 2000-11-16 | 2003-07-15 | Industrial Technology Research Institute | Automatic gamma correction system for displays |
US7403181B2 (en) * | 2001-06-02 | 2008-07-22 | Samsung Electronics Co., Ltd. | Liquid crystal display with an adjusting function of a gamma curve |
JP2002366112A (ja) * | 2001-06-07 | 2002-12-20 | Hitachi Ltd | 液晶駆動装置及び液晶表示装置 |
JP4193771B2 (ja) * | 2004-07-27 | 2008-12-10 | セイコーエプソン株式会社 | 階調電圧発生回路及び駆動回路 |
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TW200715234A (en) | 2007-04-16 |
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