TWI456550B - 顯示裝置及其電子機器 - Google Patents

顯示裝置及其電子機器 Download PDF

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Publication number
TWI456550B
TWI456550B TW100136714A TW100136714A TWI456550B TW I456550 B TWI456550 B TW I456550B TW 100136714 A TW100136714 A TW 100136714A TW 100136714 A TW100136714 A TW 100136714A TW I456550 B TWI456550 B TW I456550B
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Taiwan
Prior art keywords
electrode
switching element
source line
corresponding source
capacitor
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Application number
TW100136714A
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English (en)
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TW201237834A (en
Inventor
Keitaro Yamashita
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Innolux Corp
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Publication of TW201237834A publication Critical patent/TW201237834A/zh
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Publication of TWI456550B publication Critical patent/TWI456550B/zh

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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
    • G09G3/20—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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • 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
    • 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
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
    • 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
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Claims (10)

  1. 一種顯示裝置，包括：複數畫素，配置為矩陣狀且各畫素具有第1及第2電極、因應該第1電極及該第2電極間的電位差而改變透過光量的光透過元件、記憶該第1電極的電位的記憶體電路；複數源極線，設置於該複數像素的各行，供給每個該複數畫素資料信號；複數閘極線，設置於該複數畫素的各列，供給每個該複數畫素控制信號來控制該資料信號的供給；以及一控制器，週期地刷新該記憶體電路，其中在刷新時間點時該第1電極相對於該第2電極具有正電位的情況下，閘極線供給的控制信號使該源極線的電位不寫入該第1電極，該控制器使該記憶體電路儲存該第1電極的電位，施加第1既定電壓於該第2電極使該第1電極的電位增加該第1既定電壓的量，再對該第1電極放電使該第1電極相對於該第2電極具有負的電位。
  2. 如申請專利範圍第1項所述之顯示裝置，其中在刷新時間點時該第1電極相對於該第2電極具有負電位的情況下，該控制器使該記憶體電路儲存該第1電極的電位，施加比該第1既定電壓低的第2既定電壓於該第2電極並且施加該第1既定電壓於該第1電極以預充該光透過元件，使該第1電極相對於該第2電極具有正的電位。
  3. 如申請專利範圍第1項或第2項所述之顯示裝置，其中該記憶體電路具有DRAM。
  4. 如申請專利範圍第3項所述之顯示裝置，其中各畫素具有一第1開關元件，設置於對應的源極線與該第1電極之間，回應對應的閘極線上的控制信號將該第1電極連接至該對應的源極線，各畫素的記憶體電路包括：一電容，儲存該第1電極的電位；一第2開關元件，配置於該第1電極與該電容之間，被該控制器所控制而將該第1電極連接至該電容；一第3開關元件，配置於該第1電極與該對應的源極線之間，被該控制器所控制而將該第1電極連接至該對應的源極線使該第1電極放電；一第4開關元件，配置於該第1電極與該第3開關元件之間，並具有一連接於該電容與該第2開關元件之間的控制端子，因應透過該第3開關元件而連接的該對應的源極線與該控制端子之間的電位差而導通。
  5. 如申請專利範圍第3項所述之顯示裝置，其中各畫素的記憶體電路包括：一第一開關元件，回應對應的閘極線上的控制信號將該第1電極連接至對應的源極線；一電容，儲存該第1電極的電位；一第2開關元件，配置於該第1電極與該電容之間，被該控制器所控制而將該第1電極連接至該電容；一第3開關元件，配置於該第1電極與該對應的源極線之間，被該控制器所控制而將該第1電極連接至該對應的源極線使該第1電極放電；以及 一第4開關元件，配置於該第1電極與該第3開關元件之間，並具有一連接於該電容與該第2開關元件之間的控制端子，因應透過該第3開關元件而連接的該對應的源極線與該控制端子之間的電位差而導通，其中該第1開關元件與該第4開關元件並聯配置，該第3開關元件被該控制器所控制而透過該第1開關元件將該第1電極連接至該對應的源極線，使得該對應的源極線上的電壓施加於該第1電極。
  6. 如申請專利範圍第3項所述之顯示裝置，其中各畫素的記憶體電路包括：一第一開關元件，回應對應的閘極線上的控制信號將該第1電極連接至對應的源極線；一電容，儲存該第1電極的電位；一第2開關元件，配置於該第1電極與該電容之間，被該控制器所控制而將該第1電極連接至該電容；一第3開關元件，配置於該第1電極與該對應的源極線之間，被該控制器所控制而將該第1電極連接至該對應的源極線使該第1電極放電；以及一第4開關元件，配置於該第3開關元件與該對應的源極線之間，並具有一連接於該電容與該第2開關元件之間的控制端子，因應該對應的源極線與該控制端子之間的電位差而導通，將該第3開關元件連接至該對應的源極線，其中該第1開關元件與該第4開關元件並聯配置，該第3開關元件被該控制器所控制而透過該第1開關元件將該第1電極連接至該對應的源極線，使得該對應的源極線 上的電壓施加於該第1電極。
  7. 如申請專利範圍第4-6項任一項所述之顯示裝置，其中該第1開關元件、該第2開關元件、該第3開關元件及該第4開關元件為薄膜電晶體。
  8. 如申請專利範圍第4-6項任一項所述之顯示裝置，其中該光透過元件為液晶單元。
  9. 如申請專利範圍第8項所述之顯示裝置，其中該液晶單元在該第1電極與該第2電極之間的電位差為零時不使光透過。
  10. 一種電子機器，具備如申請專利範圍第1-6項任一項所述之顯示裝置。
TW100136714A 2010-10-25 2011-10-11 顯示裝置及其電子機器 TWI456550B (zh)

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JP2010238669A JP5268117B2 (ja) 2010-10-25 2010-10-25 ディスプレイ装置及びこれを備える電子機器

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Publication number Publication date
US20120127215A1 (en) 2012-05-24
US8736591B2 (en) 2014-05-27
JP5268117B2 (ja) 2013-08-21
JP2012093436A (ja) 2012-05-17
TW201237834A (en) 2012-09-16
CN102456332A (zh) 2012-05-16
CN102456332B (zh) 2013-10-30

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