JP6518786B2 - 輝点修復後の液晶パネル及びその輝点修復方法 - Google Patents
輝点修復後の液晶パネル及びその輝点修復方法 Download PDFInfo
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Description
となり、そのうち、Vghは第1薄膜トランジスタT1のオン電圧であり、Vglは第1薄膜トランジスタT1のオフ電圧である。図4は画素ユニットの受信する電圧信号の波形図であり、図中、Vdはデータ信号駆動電圧の波形を表し、Vgは走査信号駆動電圧の波形を表し、Vpは画素電極の受信する実際電圧信号の波形を表し、Vcomは共通電圧信号である。図4に示すように、フィードスルー電圧△Vが存在するため、データ信号駆動電圧Vdの正半周期であってもよく負半周期であってもよく、画素電極の充電完了後の電圧Vpはいずれも駆動電圧Vdより小さく、その差はちょうど△Vであり、且つ、正半周期内のVp及びVcomの差と負半周期内のVp及びVcomの差との絶対値が等しい。そのため、主画素ユニットにとって、蓄電容量Cst1が増加する時、前記△Vの計算式から△Vが小さくなると分かり、共通電圧Vcomが変化しない場合では、データ信号駆動電圧Vdの正半周期において、VpとVcomとの差が増加し(表示画面が暗いが、周波数が速いため、暗い状態は知覚されにくい)、データ信号駆動電圧Vdの負半周期において、VpとVcomとの差が減少する(表示画面が明るい)。最終的には、表示全体において微細な輝点と感じられる。そのため、副画素ユニットを修復した後、主画素ユニットの蓄電容量Cst1に対する影響をできる限り回避するべきである。
データケーブルと、
第1走査線及び第2走査線と、
共通電極配線と、
前記第1走査線の走査信号の駆動においてそれぞれデータケーブルにおけるデータ信号を受信して同じ電圧を有するように配置された主画素ユニット及び副画素ユニットと、
前記第2走査線の走査信号の駆動において前記副画素ユニットの電圧を変更し、前記主画素ユニットの電圧と差異を発生させるように配置された電荷シェアユニットと、を含み、
前記主画素ユニットは少なくとも主画素電極を含み、前記副画素ユニットは少なくとも副画素電極と第2薄膜トランジスタを含み、前記第2薄膜トランジスタのドレイン電極はアンテナを介して前記副画素電極に接続され、前記アンテナは前記主画素電極を跨り、
前記副画素ユニットは輝点欠陥を有するため、黒点に修復された画素ユニットであり、黒点に修復された後の前記副画素ユニットにおいて、前記第2薄膜トランジスタのドレイン電極と前記アンテナは切断接続状態にあり、前記アンテナと前記副画素電極は切断接続状態にあり、前記アンテナは前記主画素電極に電気的に接続され、前記副画素電極は前記共通電極配線に電気的に接続され、且つ前記電荷シェアユニット及び前記主画素ユニットと前記副画素ユニットはいずれも切断接続状態にある。
Claims (10)
- 輝点修復後の液晶パネルであって、
該液晶パネルは、輝点修復後の画素構造を少なくとも含むアレイ基板を含み、該画素構造は、
データケーブルと、
第1走査線及び第2走査線と、
共通電極配線と、
前記第1走査線の走査信号の駆動においてそれぞれデータケーブルにおけるデータ信号を受信して同じ電圧を有するように配置された主画素ユニット及び副画素ユニットと、
前記第2走査線の走査信号の駆動において前記副画素ユニットの電圧を変更し、前記主画素ユニットの電圧と差異を発生させるように配置された電荷シェアユニットと、を含み、
前記主画素ユニットは少なくとも主画素電極を含み、前記副画素ユニットは少なくとも副画素電極と第2薄膜トランジスタを含み、前記第2薄膜トランジスタのドレイン電極はアンテナを介して前記副画素電極に接続され、前記アンテナは前記主画素電極を跨り、
前記副画素ユニットは輝点欠陥を有するため、黒点に修復された画素ユニットであり、黒点に修復された後の前記副画素ユニットにおいて、前記第2薄膜トランジスタのドレイン電極と前記アンテナは切断状態にあり、前記アンテナと前記副画素電極は切断状態にあり、前記アンテナは前記主画素電極に電気的に接続され、前記副画素電極は前記共通電極配線に電気的に接続され、前記電荷シェアユニット及び前記主画素ユニットと前記副画素ユニットはいずれも切断状態にある、
ことを特徴とする輝点修復後の液晶パネル。 - 前記切断状態は切断の方式により2つの部材を互いに絶縁させる、
ことを特徴とする請求項1に記載の輝点修復後の液晶パネル。 - 前記アンテナは第1修復線を介して前記主画素電極に電気的に接続され、前記副画素電極は第2修復線を介して前記共通電極配線に電気的に接続されている、
ことを特徴とする請求項1に記載の輝点修復後の液晶パネル。 - 前記主画素ユニットは、さらに、第1薄膜トランジスタを含み、該第1薄膜トランジスタのゲート電極は前記第1走査線に電気的に接続され、ソース電極は前記データケーブルに電気的に接続され、ドレイン電極は前記主画素電極に電気的に接続されている、
ことを特徴とする請求項1に記載の輝点修復後の液晶パネル。 - 前記第2薄膜トランジスタのゲート電極は前記第1走査線に電気的に接続され、ソース電極は前記データケーブルに電気的に接続されている、
ことを特徴とする請求項1に記載の輝点修復後の液晶パネル。 - 前記電荷シェアユニットは第3薄膜トランジスタを含み、前記副画素ユニットを黒点に修復した後、前記第3薄膜トランジスタのドレイン電極と前記副画素電極は切断状態にあり、且つ前記第3薄膜トランジスタのソース電極及び前記主画素電極と前記共通電極配線との間はいずれも切断状態にある、
ことを特徴とする請求項1に記載の輝点修復後の液晶パネル。 - 液晶パネルの輝点修復方法であって、
該液晶パネルは、輝点修復後の画素構造を少なくとも含むアレイ基板を含み、該画素構造は、
データケーブルと、
第1走査線及び第2走査線と、
共通電極配線と、
前記第1走査線の走査信号の駆動においてそれぞれデータケーブルにおけるデータ信号を受信して同じ電圧を有するように配置された主画素ユニット及び副画素ユニットと、
前記第2走査線の走査信号の駆動において前記副画素ユニットの電圧を変更し、前記主画素ユニットの電圧と差異を発生させるように配置された電荷シェアユニットと、を含み、
前記主画素ユニットは少なくとも主画素電極を含み、前記副画素ユニットは少なくとも副画素電極と第2薄膜トランジスタを含み、前記第2薄膜トランジスタのドレイン電極はアンテナを介して前記副画素電極に接続され、前記アンテナは前記主画素電極を跨り、
前記副画素ユニットは輝点欠陥を有するため、黒点に修復され、該修復方法は、
レーザー切断の方式により、前記第2薄膜トランジスタのドレイン電極と前記アンテナの接続部を切断して絶縁させ、前記アンテナと前記副画素電極の接続部を切断して絶縁させ、前記電荷シェアユニットと前記主画素ユニット及び副画素ユニットの接続部をいずれも切断して絶縁させるステップと、
レーザー溶接の方式により、前記アンテナを前記主画素電極に電気的に接続させ、前記副画素電極を前記共通電極配線に電気的に接続させるステップと、を含む、
ことを特徴とする液晶パネルの輝点修復方法。 - レーザーで修復線を溶接する方式により、前記アンテナを前記主画素電極に電気的に接続させ、前記副画素電極を前記共通電極配線に電気的に接続させる、
ことを特徴とする請求項7に記載の液晶パネルの輝点修復方法。 - 前記電荷シェアユニットは第3薄膜トランジスタを含み、レーザー切断の方式により、前記第3薄膜トランジスタのドレイン電極と前記副画素電極の接続部を切断して絶縁させ、前記第3薄膜トランジスタのソース電極及び前記主画素電極と前記共通電極配線との間の接続部をいずれも切断して絶縁させる、
ことを特徴とする請求項7に記載の液晶パネルの輝点修復方法。 - 前記主画素ユニットは、さらに、第1薄膜トランジスタを含み、該第1薄膜トランジスタのゲート電極は前記第1走査線に電気的に接続され、ソース電極は前記データケーブルに電気的に接続され、ドレイン電極は前記主画素電極に電気的に接続されている、
ことを特徴とする請求項7に記載の液晶パネルの輝点修復方法。
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