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TWI328790B - Data driver chip and liquid crystal display device using the same - Google Patents

Data driver chip and liquid crystal display device using the same Download PDF

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Publication number
TWI328790B
TWI328790B TW095112480A TW95112480A TWI328790B TW I328790 B TWI328790 B TW I328790B TW 095112480 A TW095112480 A TW 095112480A TW 95112480 A TW95112480 A TW 95112480A TW I328790 B TWI328790 B TW I328790B
Authority
TW
Taiwan
Prior art keywords
digital
signal
analog converter
interface
digital analog
Prior art date
Application number
TW095112480A
Other languages
English (en)
Other versions
TW200739484A (en
Inventor
Cheng Hsiu Lee
Ti Kai Chao
Original Assignee
Chimei Innolux 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 Chimei Innolux Corp filed Critical Chimei Innolux Corp
Priority to TW095112480A priority Critical patent/TWI328790B/zh
Priority to US11/784,673 priority patent/US7436335B2/en
Publication of TW200739484A publication Critical patent/TW200739484A/zh
Application granted granted Critical
Publication of TWI328790B publication Critical patent/TWI328790B/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
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • 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
    • G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/662—Multiplexed conversion systems

Landscapes

  • 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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Description

1328790 九、發明說明： 【發明所屬之技術領域】 . 本發明係關於一種資料驅動晶片及採用該資料驅動晶片之液 ； 晶顯示器。 【先前技術】 * 目前，液晶顯示器逐漸取代了用於計算機之傳統陰極射線管 (Cathode Ray Tube, CRT)顯示器，而且’由於液晶顯示器具輕、薄、 ^ 小等特點，使其非常適合應用於桌上型電腦、個人數位助理 (Personal Digital Assistant, PDA)、便攜式電話、電視及多種辦公自 動化與視聽設備。 一種先前技術揭露之液晶顯示器10如圖1所示，其包括一主 控電路板11、一閘極驅動晶片12、一資料驅動晶片13、一液晶顯 示面板 14 及一軟性印刷電路板(Flexible Printed Circuit，FPC)15。 該主控電路板11為該閘極驅動晶片12及該資料驅動晶片13提供 訊號。該閘極驅動晶片12及該資料驅動晶片13設置於該液晶顯 • 示面板14上，其採用玻璃覆晶封裝技術(ChipOnGlass，COG)，通 過異方性導電膜（Anisotropic Conductive Film，ACF)連接到液晶 顯示面板14 ’以提供顯示訊號給該液晶顯示面板14。該主控電路 板11與該閘極驅動晶片12及該資料驅動晶片13通過該軟性印刷 電路板15連接。 請參閱圖2，係該資料驅動晶片13之示意圖。該資料驅動晶 片13包括一數位類比轉換器（D/A c〇nverter) 131。該數位類比 轉換器131用於將該RGB數位圖像訊號轉化為類比訊號並輸出至 該液晶顯示面板14。該數位類比轉換器131包括一數位輸入接口 6

Claims (1)

  1. , 々.年’ j 4.¾'正本 十、申請專利範圍： --— l —種資料驅動晶片，其包括一多工器、一第一數位類比轉換器 及第一數位類比轉換器，該多工器可接收外部時分複用訊號 並將該時分複用訊號分解為第一訊號及第二訊號，並分別傳送 - 至該第一數位類比轉換器與該第二數位類比轉換器，該第一數 位類比轉換器將該第一訊號轉換為該第二數位類比轉換器所需 之伽瑪類比電壓，該第二數位類比轉換器根據該伽瑪類比電壓 將該第二訊號轉換為類比圖像訊號輸出，其中，該時分複用訊 •號麵關-總線分時制之數位格式之圖像色彩訊號及數位 格式之伽瑪訊號，該第一訊號為該數位格式之伽瑪訊號，該第 二訊號為該圖像色彩訊號。 2. 如申請專利範圍第1項所述之資料驅動晶片，該多工器分別與 該第—數位類比轉換器及該第二數位類比轉換器相連，該第二 數位類比轉換器連接至該第二數位類比轉換器。 3. 如申請專利範圍第2項所述之資料驅動晶片，其中，該多工器 φ 包括一資料總線訊號接口、一第一輸出接口及—第二輸出接 口，該第一數位類比轉換器包括一第一數位輸入接口及一第— 類比輸入接口，該第二數位類比轉換器進一步包括一第二數位 接〇、-第二類比輸入接口及一第二類比輸出接口，該多 器之第一輸出接口與該第一數位類比轉換器之第一數位輪入 。。相連接’該多工$之第二輸出接口與該第二數位類比轉換 益之第二數位輸出接口相連接，該第一數位類比轉換器之第一、 =比輪出接口與該第二數位類比轉換器之第二類比輸^接口相 ^ 邛 790 '、 I 4·如申請專利範圍第3項所述之資料驅動晶片，其中，該多工器、 該第一數位類比轉換器及該第二數位類比轉換器皆封^於該資 - 料驅動晶片内，該多工器之資料訊號總線接口及該第I數^類 . 比轉換器之第二類比輸出接口以接腳方式設置於該資料驅動晶 片。 5. 一種液晶顯示器，其包括： 一液晶顯示面板； 一主控電路板； ® 一掃描驅動晶片，其分別與該液晶顯示面板及該主控電路板相 連接； 一膏料驅動晶片’其包括一多工器、一第一數位類比轉換器及 一第二數位類比轉換器，該多工器分別與該主控電路板、第 —數位類比轉換器及該第二數位類比轉換器相連，該第一數 位類比轉換器連接至該第二數位類比轉換器，該第二數位類 比轉換器連接至該液晶顯示面板， φ 其中’該時分複用訊號為利用同一總線分時複用之數位格式之 圖像色彩訊號及數位格式之伽瑪訊號，該第一訊號為該數位 格式之伽瑪訊號，該第二訊號為該圖像色彩訊號。 6. 如申請專利範圍第5項所述之液晶顯示器，其中，該多工器可 ，收外部時分複用訊號並將該時分複用訊號分解為第 一訊號及 $二訊號’並分別傳送至該第—數鋪比轉換雜該第二數位 類比轉換器，該第-數位類比轉換器將該第一訊號轉換為該第 二數位類比轉換器所需之伽瑪類比電壓該第二數位類比轉換 器根據該伽瑪類比電壓將該第二訊換為類比圖像訊號輸出 i S.1 13 1328790 至該液晶顯示面板。 7. 如申清專利範圍第5項所述之液晶顯示器，其中，該夕 括一資料總線訊號接口、-第一輸出接口及1 =多工器包 該第-數鋪比轉換H包括—第―數讀入接接口， 輸入接口，該第二數位類比轉換器進一步包括 1—類比 接口、一第二類比輸入接口及一第二類比輪出接口了=輸) 之第輸出接口與該第_數位類比轉換器二夕工盗 相連接，鮮工器之第二輸出接口與該第二==位輪入接口 第二數位輸出接口相連接，該第一數類比轉換器之 輸出接口與該第二數位類比轉換器之第 輪2 —類比 接。 頰比翰入接口相連 8. 如申請專利範圍第7項所述之液晶顯示器，㈠，^ =數娜雜細㈣她咖刚裝於該資 =動晶片内，該資料訊號總線接D、該第二類比輸出接口以 接腳方式設置於該資料驅動晶片。 ^申請專利範圍第5項所述之液㈣示器，其中，該閘極驅動 广及該貢料驅動晶片係採用麵覆晶封裝技術設置於該液晶 顯示面板上。
TW095112480A 2006-04-07 2006-04-07 Data driver chip and liquid crystal display device using the same TWI328790B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW095112480A TWI328790B (en) 2006-04-07 2006-04-07 Data driver chip and liquid crystal display device using the same
US11/784,673 US7436335B2 (en) 2006-04-07 2007-04-09 Data driver and liquid crystal display having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW095112480A TWI328790B (en) 2006-04-07 2006-04-07 Data driver chip and liquid crystal display device using the same

Publications (2)

Publication Number Publication Date
TW200739484A TW200739484A (en) 2007-10-16
TWI328790B true TWI328790B (en) 2010-08-11

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Publication number Priority date Publication date Assignee Title
WO2008114101A2 (en) * 2007-03-21 2008-09-25 Freescale Semiconductor, Inc. Method and apparatus for converting signals
TWI502571B (zh) 2012-11-20 2015-10-01 Novatek Microelectronics Corp 面板驅動晶片及其降溫方法
CN103854584B (zh) * 2012-11-30 2016-07-20 联咏科技股份有限公司 面板驱动芯片
KR102119092B1 (ko) * 2013-11-25 2020-06-26 엘지디스플레이 주식회사 표시장치

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US4591822A (en) * 1984-11-30 1986-05-27 Therm-O-Disc, Incorporated Bimetal thermostat with head collector
US5182768A (en) * 1991-10-21 1993-01-26 Nitsuko Corporation Digital telephone set capable of being simultaneously used by a plurality of persons by using one transmission line
JP4201070B2 (ja) * 2000-06-28 2008-12-24 エルジー ディスプレイ カンパニー リミテッド 液晶表示装置のガンマ電圧の修正装置および方法
KR100864917B1 (ko) * 2001-11-03 2008-10-22 엘지디스플레이 주식회사 액정표시장치의 데이터 구동 장치 및 방법
KR100884993B1 (ko) * 2002-04-20 2009-02-20 엘지디스플레이 주식회사 액정표시장치 및 그 구동방법
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TW200739484A (en) 2007-10-16
US20070236379A1 (en) 2007-10-11
US7436335B2 (en) 2008-10-14

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