TWI678577B - Data processing method applied to liquid crystal display panel - Google Patents

Data processing method applied to liquid crystal display panel Download PDF

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TWI678577B
TWI678577B TW107141954A TW107141954A TWI678577B TW I678577 B TWI678577 B TW I678577B TW 107141954 A TW107141954 A TW 107141954A TW 107141954 A TW107141954 A TW 107141954A TW I678577 B TWI678577 B TW I678577B
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data
value
grayscale
driving voltage
processing method
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TW107141954A
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Chinese (zh)
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TW202020513A (en
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林桂吟
Kuei Yin Lin
黃竣暉
Chun Hui Huang
康育齊
Yu Chi Kang
峻賢 蘇
Effendi
和家璞
Chia Pu Ho
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友達光電股份有限公司
Au Optronics Corporation
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Priority to TW107141954A priority Critical patent/TWI678577B/en
Priority to CN201910092089.1A priority patent/CN109509460B/en
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Publication of TW202020513A publication Critical patent/TW202020513A/en

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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
    • G09G3/34—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
    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • 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
    • 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
    • G09G3/3696—Generation of voltages supplied to electrode drivers

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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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

本發明揭露一種應用於液晶顯示面板之資料處理方法。液晶顯示面板包括複數條資料線。資料處理方法包括下列步驟：(a)該複數條資料線中之一資料線依序傳輸第(n-1)資料及第n資料，其中n為大於1的正整數；(b)判斷第n資料之第n灰階值是否位於選定值範圍內，其中選定值範圍係介於第一灰階臨界值與第二灰階臨界值之間；以及(c)若步驟(b)之判斷結果為否，調整第(n-1)資料之第(n-1)驅動電壓。 The invention discloses a data processing method applied to a liquid crystal display panel. The liquid crystal display panel includes a plurality of data lines. The data processing method includes the following steps: (a) one of the plurality of data lines sequentially transmits the (n-1) th data and the nth data, where n is a positive integer greater than 1; (b) judging the nth Whether the nth gray level value of the data is within the selected value range, where the selected value range is between the first gray level critical value and the second gray level critical value; and (c) if the judgment result of step (b) is No, adjust the (n-1) th driving voltage of the (n-1) th data.

Description

應用於液晶顯示面板之資料處理方法 Data processing method applied to liquid crystal display panel

本發明係與顯示裝置有關，尤其是關於一種應用於液晶顯示面板之資料處理方法。 The invention relates to a display device, and more particularly to a data processing method applied to a liquid crystal display panel.

隨著液晶顯示技術之演進，液晶顯示面板的尺寸愈來愈大，但也使得液晶顯示面板內的阻抗值隨之變大，因而造成電阻電容延遲(RC delay)效應之產生。對於具有高解析度及高更新頻率的新一代液晶顯示面板而言，此現象將會導致液晶顯示面板的畫素無法順利地在有限的充電或放電時間內充電或放電至其顯示畫面所需的電壓值，影響其顯示畫面的畫質。 With the evolution of the liquid crystal display technology, the size of the liquid crystal display panel is getting larger and larger, but the impedance value in the liquid crystal display panel is also increased accordingly, which causes the RC delay effect. For a new generation of liquid crystal display panels with high resolution and high update frequency, this phenomenon will cause the pixels of the liquid crystal display panel cannot be successfully charged or discharged to their display screens within a limited charging or discharging time. The voltage value affects the picture quality of its display.

傳統上，雖可根據前一筆資料與目前資料來判斷資料所需的補償電壓量並採用數位補償法進行補償，使得液晶顯示面板之畫素能夠在充電時間內充電至其所需的電壓值。然而，傳統的數位補償法仍存在著其應用上的極限，例如其能夠補償的對象僅限於數位值可補償的灰階值範圍。 Traditionally, although the amount of compensation voltage required for the data can be determined based on the previous data and the current data, and digital compensation is used to compensate, the pixels of the liquid crystal display panel can be charged to their required voltage value within the charging time. However, the traditional digital compensation method still has its application limits. For example, the objects that can be compensated are limited to the range of grayscale values that can be compensated by digital values.

接下來，將以包含第0階灰階值L0~第255階灰階值L255的256階灰階為例進行說明傳統的數位補償法。 Next, a conventional digital compensation method will be described using a 256-level grayscale including the 0th-level grayscale value L0 to the 255th-level grayscale value L255 as an example.

如圖1A所示，假設資料DAT欲由第0階灰階值L0上升至第128階灰階值L128，由於第128階灰階值L128在256階灰階內並非位於最高灰階值(第255階灰階值L255)或最低灰階值(第0階灰階值L0)附近，因此，傳統的數位補償法仍可在充電時間TC內透過將第128階灰階值L128抬高一灰階變化量△L至更高的灰階值(L128+△L)之方式提供較高的驅動電壓以增加資料DAT的充電速度，使其能在充電時間TC內快速充電至其所需的電壓值V2。 As shown in FIG. 1A, it is assumed that the data DAT is to be raised from the 0th grayscale value L0 to the 128th grayscale value L128, because the 128th grayscale value L128 is not located at the highest grayscale value within the 256th grayscale (the 255-level gray-scale value L255) or the lowest gray-level value (0-level gray-scale value L0), therefore, the traditional digital compensation method can still raise the 128-level gray-scale value L128 by one gray within the charging time TC. The method of step change △ L to a higher gray level value (L128 + △ L) provides a higher driving voltage to increase the charging speed of the data DAT, so that it can be quickly charged to its required voltage value within the charging time TC V2.

然而，如圖1B所示，假設資料DAT欲由第0階灰階值L0上升至第255階灰階值L255，由於第255階灰階值L255在256階灰階內已是最高灰階值，已無法再透過傳統的數位補償法抬高第255階灰階值L255，導致資料DAT在充電時間TC內的充電速度無法增加，故僅能充電至電壓值V1而無法達到其所需的電壓值V2，故會有充電不足之現象。 However, as shown in FIG. 1B, it is assumed that the data DAT is to be raised from the 0th grayscale value L0 to the 255th grayscale value L255, because the 255th grayscale value L255 is already the highest grayscale value within the 256th grayscale. It is no longer possible to raise the 255th-level grayscale value L255 through the traditional digital compensation method, which causes the charging speed of the data DAT within the charging time TC cannot be increased, so it can only be charged to the voltage value V1 and cannot reach its required voltage The value is V2, so there will be insufficient charging.

同理，如圖2A所示，假設資料DAT欲由第255階灰階值L255下降至第128階灰階值L128，傳統的數位補償法仍可在放電時間TD內將第128階灰階值L128調降一灰階變化量△L至更低的灰階值(L128-△L)，以增加資料DAT的放電速度，使其能在放電時間TD內快速放電至其所需的電壓值V4。 Similarly, as shown in FIG. 2A, if the data DAT is to be decreased from the 255th-level grayscale value L255 to the 128th-level grayscale value L128, the traditional digital compensation method can still reduce the 128th-level grayscale value within the discharge time TD. L128 reduces a gray scale change △ L to a lower gray scale value (L128- △ L) to increase the discharge speed of the data DAT, so that it can quickly discharge to its required voltage value V4 within the discharge time TD .

然而，如圖2B所示，假設資料DAT欲由第255階灰階值L255下降至第0階灰階值L0，由於第0階灰階值L0在256階灰階內已是最低灰階值，已無法再透過傳統的數位補償法降低第0階灰階 值L0，導致資料DAT在放電時間TD內僅能放電至電壓值V3而無法達到其所需的電壓值V4，故會有放電不足之現象。 However, as shown in FIG. 2B, it is assumed that the data DAT is to be reduced from the 255th grayscale value L255 to the 0th grayscale value L0, because the 0th grayscale value L0 is already the lowest grayscale value within the 256th grayscale. , It is no longer possible to reduce the 0th gray level through the traditional digital compensation method The value L0 causes the data DAT to discharge only to the voltage value V3 and cannot reach its required voltage value V4 within the discharge time TD, so there is a phenomenon of insufficient discharge.

由上述可知：當液晶顯示面板之顯示畫面出現最高灰階值或最低灰階值時，即面臨到在最高灰階值或最低灰階值附近的充放電極限補償問題，很可能使得液晶顯示面板較靠近源極驅動器之一側與較遠離源極驅動器之另一側所顯示之畫面不一致，因而導致液晶顯示面板之顯示畫面的畫質(Picture quality)變差，嚴重影響使用者觀看液晶顯示面板之顯示畫面時的視覺感受，亟需改善。 From the above, it can be known that when the display screen of a liquid crystal display panel has the highest grayscale value or the lowest grayscale value, it faces the problem of charge and discharge limit compensation near the highest grayscale value or the lowest grayscale value, which is likely to make the liquid crystal display panel The picture displayed on one side closer to the source driver and the other side farther away from the source driver are inconsistent, thus causing the picture quality of the display screen of the liquid crystal display panel to deteriorate, which seriously affects the user viewing the liquid crystal display panel. The visual experience when displaying pictures needs to be improved.

因此，本發明提出一種應用於液晶顯示面板之資料處理方法，以解決先前技術所遭遇的上述問題。 Therefore, the present invention proposes a data processing method applied to a liquid crystal display panel to solve the aforementioned problems encountered in the prior art.

根據本發明之一具體實施例為一種資料處理方法。於此實施例中，資料處理方法係應用於液晶顯示面板。液晶顯示面板包括複數條資料線。資料處理方法包括下列步驟：(a)該複數條資料線中之一資料線依序傳輸第(n-1)資料及第n資料，其中n為大於1的正整數；(b)判斷第n資料之第n灰階值是否位於選定值範圍內，其中選定值範圍係介於第一灰階臨界值與第二灰階臨界值之間；以及(c)若步驟(b)之判斷結果為否，調整第(n-1)資料之第(n-1)驅動電壓。 A specific embodiment of the present invention is a data processing method. In this embodiment, the data processing method is applied to a liquid crystal display panel. The liquid crystal display panel includes a plurality of data lines. The data processing method includes the following steps: (a) one of the plurality of data lines sequentially transmits the (n-1) th data and the nth data, where n is a positive integer greater than 1; (b) judging the nth Whether the nth gray level value of the data is within the selected value range, where the selected value range is between the first gray level critical value and the second gray level critical value; and (c) if the judgment result of step (b) is No, adjust the (n-1) th driving voltage of the (n-1) th data.

於一實施例中，步驟(c)係透過改變第(n-1)資料之第 (n-1)灰階值之方式來調整第(n-1)資料之第(n-1)驅動電壓。 In one embodiment, step (c) is performed by changing the (n-1) th data The (n-1) gray scale value is used to adjust the (n-1) th driving voltage of the (n-1) th data.

於一實施例中，步驟(c)改變第(n-1)灰階值之灰階值改變量係根據第(n-1)資料之第(n-1)驅動電壓與第n資料之第n驅動電壓之間的電壓差而決定。 In an embodiment, the step (c) changes the gray scale value of the (n-1) th grayscale value according to the (n-1) th driving voltage of the (n-1) th data and the nth data of the nth data. It is determined by the voltage difference between the n driving voltages.

於一實施例中，灰階值改變量係根據電壓與亮度之對應關係而調整，致使人眼不易察覺灰階值改變量所造成之亮度變化。 In one embodiment, the change in the grayscale value is adjusted according to the corresponding relationship between the voltage and the brightness, so that it is difficult for human eyes to detect the brightness change caused by the change in the grayscale value.

於一實施例中，第一灰階臨界值高於第二灰階臨界值，當第n灰階值高於第一灰階臨界值或低於第二灰階臨界值時，步驟(b)判定第n灰階值不位於選定值範圍內。 In an embodiment, the first grayscale threshold is higher than the second grayscale threshold. When the nth grayscale value is higher than the first grayscale threshold or lower than the second grayscale threshold, step (b) Determine that the n-th grayscale value is not within the selected value range.

於一實施例中，當第n灰階值高於第一灰階臨界值時，步驟(c)調高第(n-1)資料之第(n-1)驅動電壓，使得第n資料之第n驅動電壓亦隨之升高。 In an embodiment, when the nth grayscale value is higher than the first grayscale threshold, step (c) increases the (n-1) th driving voltage of the (n-1) th data, so that the nth data The n-th driving voltage also increases.

於一實施例中，步驟(c)係透過增加第(n-1)資料之第(n-1)灰階值之方式來調高第(n-1)資料之第(n-1)驅動電壓。 In an embodiment, step (c) is to increase the (n-1) th drive of the (n-1) th data by increasing the (n-1) th grayscale value of the (n-1) th data. Voltage.

於一實施例中，步驟(c)增加第(n-1)灰階值之灰階值增加量係根據第(n-1)資料之第(n-1)驅動電壓與第n資料之第n驅動電壓之間的電壓差而決定。 In an embodiment, the step (c) increases the gray scale value of the (n-1) th grayscale value according to the (n-1) th driving voltage of the (n-1) th data and the nth data It is determined by the voltage difference between the n driving voltages.

於一實施例中，灰階值增加量可根據電壓與亮度之對應關係而調整，致使人眼不易察覺灰階值增加量所造成之亮度變化。 In one embodiment, the increase in the gray level value can be adjusted according to the corresponding relationship between the voltage and the brightness, so that it is difficult for the human eye to detect the brightness change caused by the increase in the gray level value.

於一實施例中，當第n灰階值低於第二灰階臨界值時，步驟(c)調低第(n-1)資料之第(n-1)驅動電壓，使得第n資料之第n驅動電壓亦隨之降低。 In an embodiment, when the nth grayscale value is lower than the second grayscale threshold, step (c) lowers the (n-1) th driving voltage of the (n-1) th data, so that the nth data The n-th driving voltage is also reduced accordingly.

於一實施例中，步驟(c)係透過減少第(n-1)資料之第(n-1)灰階值之方式來調低第(n-1)資料之第(n-1)驅動電壓。 In an embodiment, step (c) is to reduce the (n-1) th drive of the (n-1) th data by reducing the (n-1) th grey level of the (n-1) th data. Voltage.

於一實施例中，步驟(c)減少第(n-1)灰階值之灰階值減少量係根據第(n-1)資料之第(n-1)驅動電壓與第n資料之第n驅動電壓之間的電壓差而決定。 In an embodiment, the step (c) reduces the grayscale value of the (n-1) th grayscale value according to the (n-1) th driving voltage of the (n-1) th data and the nth data of the nth data. It is determined by the voltage difference between the n driving voltages.

於一實施例中，灰階值減少量可根據電壓與亮度之對應關係而調整，致使人眼不易察覺灰階值減少量所造成之亮度變化。 In one embodiment, the reduction of the grayscale value can be adjusted according to the corresponding relationship between the voltage and the brightness, so that it is difficult for human eyes to detect the brightness change caused by the reduction of the grayscale value.

於一實施例中，資料線係分別於第一時間及第二時間傳輸第(n-1)資料及第n資料，且第一時間早於第二時間。 In an embodiment, the data line transmits the (n-1) th data and the nth data at the first time and the second time, respectively, and the first time is earlier than the second time.

於一實施例中，資料處理方法還包括下列步驟：(c’)若步驟(b)之判斷結果為是，直接調整第n資料之第n驅動電壓。 In an embodiment, the data processing method further includes the following steps: (c ') If the judgment result of step (b) is yes, directly adjust the n-th driving voltage of the n-th data.

於一實施例中，步驟(c’)係透過改變第n資料之第n灰階值的方式來調整第n資料之第n驅動電壓。 In an embodiment, step (c ') is to adjust the nth driving voltage of the nth data by changing the nth grayscale value of the nth data.

根據本發明之另一具體實施例亦為一種資料處理方法。於此實施例中，資料處理方法係應用於液晶顯示面板。液晶顯示面板包括複數條資料線。資料處理方法包括下列步驟：(a)該複數條資料線中之一資料線分別傳輸第一資料及第二資料，其中 第一資料與第二資料為同一幀(frame)畫面中對應於不同列的訊號；(b)分別判斷第一資料之第一灰階值及第二資料之第二灰階值是否位於選定值範圍內，其中選定值範圍係介於第一灰階臨界值與第二灰階臨界值之間；以及(c)若步驟(b)之判斷結果為第一資料之第一灰階值位於選定值範圍內且第二資料之第二灰階值位於選定值範圍外，調整第一資料之第一驅動電壓並維持第二資料之第二驅動電壓。 Another specific embodiment according to the present invention is also a data processing method. In this embodiment, the data processing method is applied to a liquid crystal display panel. The liquid crystal display panel includes a plurality of data lines. The data processing method includes the following steps: (a) one of the plurality of data lines transmits the first data and the second data, respectively, wherein The first data and the second data are the signals corresponding to different columns in the same frame; (b) determine whether the first grayscale value of the first data and the second grayscale value of the second data are at the selected value, respectively. Within the range, the selected value range is between the first grayscale threshold and the second grayscale threshold; and (c) if the judgment result of step (b) is that the first grayscale value of the first data is located at the selected Within the value range and the second grayscale value of the second data is outside the selected value range, the first driving voltage of the first data is adjusted and the second driving voltage of the second data is maintained.

於一實施例中，第二資料之前一列資料的驅動電壓會受調整。 In one embodiment, the driving voltage of a row of data before the second data is adjusted.

於一實施例中，第一資料之前一列資料的驅動電壓不受調整。 In an embodiment, the driving voltage of a row of data before the first data is not adjusted.

相較於先前技術，根據本發明之資料處理方法可應用於任何像素架構下之高解析度及高更新頻率的液晶顯示面板，其能夠有效改善液晶顯示面板在最高灰階值或最低灰階值附近的充電極限補償問題，藉以避免如同先前技術中之液晶顯示面板的顯示畫面出現上下不一致的問題，故能有效提升液晶顯示面板之顯示畫面的畫質，以提供使用者良好的視覺感受。 Compared with the prior art, the data processing method according to the present invention can be applied to a liquid crystal display panel with high resolution and high update frequency under any pixel architecture, which can effectively improve the liquid crystal display panel at the highest grayscale value or the lowest grayscale value. The nearby charging limit compensates the problem, so as to avoid the problem of inconsistency between the display screen of the liquid crystal display panel as in the prior art. Therefore, the picture quality of the display screen of the liquid crystal display panel can be effectively improved to provide users with a good visual experience.

關於本發明之優點與精神可以藉由以下的發明詳述及所附圖式得到進一步的瞭解。 The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

S10~S16‧‧‧步驟 S10 ~ S16‧‧‧step

S20~S30‧‧‧步驟 S20 ~ S30‧‧‧step

TP‧‧‧預充電時間/預放電時間 TP‧‧‧Pre-charge time / Pre-discharge time

TC‧‧‧充電時間 TC‧‧‧Charging time

TD‧‧‧放電時間 TD‧‧‧Discharge time

DAT‧‧‧資料 DAT‧‧‧ Information

L0~L255‧‧‧灰階值 L0 ~ L255‧‧‧ grayscale value

V0~V4、VA、VB、VN‧‧‧電壓值 V0 ~ V4, VA, VB, VN‧‧‧Voltage

△L‧‧‧灰階變化量 △ L‧‧‧Grayscale change

△V‧‧‧電壓變化量 △ V‧‧‧Voltage change

R1~R3‧‧‧第一區間~第三區間 R1 ~ R3‧‧‧1st ~ 3rd

DAT(n)‧‧‧第n資料(目前資料) DAT (n) ‧‧‧th data (current data)

DAT(n-1)‧‧‧第(n-1)資料(前一筆資料) DAT (n-1) ‧‧‧Article (n-1) (previous data)

DAT(n+1)‧‧‧第(n+1)資料(後一筆資料) DAT (n + 1) ‧‧‧th (n + 1) data (the latter data)

DAT(n+2)‧‧‧第(n+2)資料(後兩筆資料) DAT (n + 2) ‧‧‧th (n + 2) data (the last two data)

L(n)‧‧‧第n灰階值 L (n) ‧‧‧th grayscale value

V(n)‧‧‧第n驅動電壓 V (n) ‧‧‧nth driving voltage

V(n-1)‧‧‧第(n-1)驅動電壓 V (n-1) ‧‧‧th (n-1) driving voltage

DAT1‧‧‧第一資料 DAT1‧‧‧First Data

DAT2‧‧‧第二資料 DAT2‧‧‧Second Information

圖1A係繪示傳統的數位補償法可在充電時間TC內將 目前資料由第128階灰階值L128抬高至更高的灰階值(L128+△L)，以在充電時間TC內快速充電至其所需的電壓值V2之時序圖。 FIG. 1A shows that the traditional digital compensation method can be used within the charging time TC. At present, the data is raised from the 128th-level grayscale value L128 to a higher gray-scale value (L128 + △ L), in order to quickly charge to its required voltage value V2 within the charging time TC.

圖1B係繪示傳統的數位補償法無法在充電時間TC內再將目前資料由第255階灰階值L255抬高至更高的灰階值，故無法在充電時間TC內充電至其所需的電壓值V2之時序圖。 FIG. 1B shows that the traditional digital compensation method cannot raise the current data from the 255th-level grayscale value L255 to a higher gray-scale value within the charging time TC, so it cannot be charged to its required within the charging time TC. Timing chart of the voltage value V2.

圖2A係繪示傳統的數位補償法可在放電時間TD內將目前資料由第128階灰階值L128降低至更低的灰階值(L128-△L)，以在放電時間TD內快速放電至其所需的電壓值V4之時序圖。 FIG. 2A shows that the conventional digital compensation method can reduce the current data from the 128th-level grayscale value L128 to a lower grayscale value (L128- △ L) within the discharge time TD to quickly discharge within the discharge time TD Timing chart to its required voltage value V4.

圖2B係繪示傳統的數位補償法無法在放電時間TD內再將目前資料由第0階灰階值L0降低至更低的灰階值，故無法在放電時間TD內放電至其所需的電壓值V4之時序圖。 FIG. 2B shows that the traditional digital compensation method cannot reduce the current data from the 0th-level grayscale value L0 to a lower grayscale value within the discharge time TD, so it cannot be discharged to its required value within the discharge time TD. Timing chart of voltage value V4.

圖3係繪示根據本發明之一較佳具體實施例中之資料處理方法的流程圖。 FIG. 3 is a flowchart illustrating a data processing method according to a preferred embodiment of the present invention.

圖4係繪示不同灰階值之驅動電壓與亮度的對應關係示意圖。 FIG. 4 is a schematic diagram showing the corresponding relationship between the driving voltage and brightness of different grayscale values.

圖5A係繪示即使目前資料(第二資料DAT2)具有第255階灰階值L255，本發明之資料處理方法可在預充電時間TP內先抬高前一筆資料(第一資料DAT1)之灰階值以提供較高的驅動電壓，使得目前資料在充電時間TC內能快速充電至其所需的電壓值V2之時序圖。 FIG. 5A shows that even if the current data (second data DAT2) has a 255th-level gray level value L255, the data processing method of the present invention can first raise the gray of the previous data (first data DAT1) within the precharge time TP. Step value to provide a higher driving voltage, so that the current data can be quickly charged to its required voltage value V2 within the charging time TC.

圖5B係繪示即使目前資料(第二資料DAT2)具有第0 階灰階值L0，本發明之資料處理方法可在預放電時間TP內先降低前一筆資料(第一資料DAT1)之灰階值以提供較低的驅動電壓，使得目前資料在放電時間TD內能快速放電至其所需的電壓值V4之時序圖。 FIG. 5B shows that even if the current data (second data DAT2) has the 0th Level gray level value L0, the data processing method of the present invention can first reduce the gray level value of the previous data (first data DAT1) within the pre-discharge time TP to provide a lower driving voltage, so that the current data is within the discharge time TD Timing chart that can quickly discharge to its required voltage value V4.

圖6A係繪示當步驟S12之判斷結果為否且目前資料DAT(n)的灰階值高於第一灰階臨界值時，步驟S16調高前一筆資料DAT(n-1)的驅動電壓，以使目前資料DAT(n)能快速充電至其所需的電壓值之示意圖。 FIG. 6A shows that when the judgment result of step S12 is NO and the grayscale value of the current data DAT (n) is higher than the first grayscale threshold value, step S16 increases the driving voltage of the previous data DAT (n-1). Schematic diagram to enable the current data DAT (n) to be quickly charged to its required voltage value.

圖6B係繪示當步驟S12之判斷結果為否且目前資料DAT(n)的灰階值低於第二灰階臨界值時，步驟S16調低前一筆資料DAT(n-1)的驅動電壓，以使目前資料DAT(n)能快速放電至其所需的電壓值之示意圖。 FIG. 6B shows that when the judgment result of step S12 is NO and the grayscale value of the current data DAT (n) is lower than the second grayscale threshold value, step S16 decreases the driving voltage of the previous data DAT (n-1). Schematic diagram to enable the current data DAT (n) to quickly discharge to its required voltage value.

圖6C係繪示當步驟S12之判斷結果為是時，步驟S14直接調高目前資料DAT(n)的驅動電壓，以使目前資料DAT(n)能快速充電至其所需的電壓值之示意圖。 FIG. 6C is a schematic diagram showing that when the judgment result of step S12 is yes, step S14 directly increases the driving voltage of the current data DAT (n) so that the current data DAT (n) can be quickly charged to its required voltage value. .

圖6D係繪示當步驟S12之判斷結果為是時，步驟S14直接調低目前資料DAT(n)的驅動電壓，以使目前資料DAT(n)能快速放電至其所需的電壓值之示意圖。 FIG. 6D is a schematic diagram showing that when the judgment result of step S12 is YES, step S14 directly reduces the driving voltage of the current data DAT (n) so that the current data DAT (n) can be quickly discharged to its required voltage value. .

圖7係繪示根據本發明之另一較佳具體實施例中之資料處理方法的流程圖。 FIG. 7 is a flowchart illustrating a data processing method according to another preferred embodiment of the present invention.

在下文中將參照附圖更全面地描述本發明，在附圖中示出了本發明的示例性實施例。如本領域技術人員將認識到的，可以以各種不同的方式修改所描述的實施例，而不脫離本發明的精神或範圍。 The invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

在附圖中，為了清楚起見，放大了部份區域。在整個說明書中，相同的附圖標記表示相同的元件。應當理解，當諸如區域或基板的元件被稱為在另一元件“上”或者“連接(或稱為耦接)”又或者“電性連接”另一元件時，其可以直接在另一元件上或與另一元件連接(或稱為耦接)或電性連接，或者中間元件可以也存在。相反，當元件被稱為“直接在另一元件上”或“直接連接到”另一元件時，不存在中間元件。如本文所使用的，“連接(或稱為耦接)”可以指物理及/或電連接。 In the drawings, parts of regions have been enlarged for clarity. Throughout the description, the same reference numerals denote the same elements. It should be understood that when an element such as a region or substrate is referred to as being "on" or "connected (or referred to as a coupling)" or "electrically connected" to another element, it can be directly on the other element. It is connected to (or called coupled with) or electrically connected to another element, or an intermediate element may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected (or referred to as" coupled ") may refer to a physical and / or electrical connection.

根據本發明之一具體實施例為一種資料處理方法。於此實施例中，資料處理方法係應用於液晶顯示面板，例如任何像素架構下之高解析度(例如8K4K)及高更新頻率(例如120Hz)的液晶顯示面板，且液晶顯示面板包括複數條資料線。請參照圖3，圖3係繪示此實施例中之資料處理方法的流程圖。 A specific embodiment of the present invention is a data processing method. In this embodiment, the data processing method is applied to a liquid crystal display panel, such as a liquid crystal display panel with high resolution (for example, 8K4K) and high update frequency (for example, 120 Hz) under any pixel architecture, and the liquid crystal display panel includes a plurality of pieces of data. line. Please refer to FIG. 3, which is a flowchart illustrating a data processing method in this embodiment.

如圖3所示，資料處理方法可包括下列步驟：步驟S10：該複數條資料線中之一資料線依序傳輸第(n-1)資料DAT(n-1)及第n資料DAT(n)，其中n為大於1的正整數，舉例而言，該資料線可分別於第一時間及第二時間傳輸第(n-1)資料 DAT(n-1)及第n資料DAT(n)，且第一時間早於第二時間；步驟S12：判斷第n資料DAT(n)之第n灰階值L(n)是否位於選定值範圍內，其中選定值範圍係介於第一灰階臨界值TH1與第二灰階臨界值TH2之間；步驟S14：若步驟S12之判斷結果為是，直接調整第n資料DAT(n)之第n驅動電壓V(n)；以及步驟S16：若步驟S12之判斷結果為否，調整第(n-1)資料DAT(n-1)之第(n-1)驅動電壓V(n-1)。 As shown in FIG. 3, the data processing method may include the following steps: Step S10: One of the plurality of data lines sequentially transmits the (n-1) th data DAT (n-1) and the nth data DAT (n ), Where n is a positive integer greater than 1, for example, the data line can transmit the (n-1) th data at the first time and the second time, respectively DAT (n-1) and the nth data DAT (n), and the first time is earlier than the second time; Step S12: determine whether the nth grayscale value L (n) of the nth data DAT (n) is at the selected value Within the range, the selected value range is between the first grayscale threshold TH1 and the second grayscale threshold TH2; Step S14: If the judgment result of Step S12 is YES, directly adjust the value of the nth data DAT (n) Nth driving voltage V (n); and step S16: if the judgment result of step S12 is no, adjust the (n-1) th driving voltage V (n-1) of the (n-1) th data DAT (n-1) ).

接下來，將以n=2為例進行說明。 Next, description will be given by taking n = 2 as an example.

於步驟S10中，該資料線依序傳輸第一資料DAT1及第二資料DAT2。於此實施例中，假設第二資料DAT2為目前資料，則第一資料DAT1即為前一筆資料。 In step S10, the data line sequentially transmits the first data DAT1 and the second data DAT2. In this embodiment, assuming that the second data DAT2 is the current data, the first data DAT1 is the previous data.

於步驟S12中，該方法判斷目前資料的灰階值是否位於選定值範圍內，亦即判斷第二資料DAT2的第二灰階值L(2)是否介於第一灰階臨界值TH1與第二灰階臨界值TH2之間，其中第一灰階臨界值TH1高於第二灰階臨界值TH2。當第二資料DAT2的第二灰階值L(2)高於第一灰階臨界值TH1或低於第二灰階臨界值TH2時，步驟(b)判定第二資料DAT2的第二灰階值L(2)不位於選定值範圍內。 In step S12, the method determines whether the grayscale value of the current data is within the selected value range, that is, determines whether the second grayscale value L (2) of the second data DAT2 is between the first grayscale threshold TH1 and the first grayscale threshold value TH1. Between the two grayscale thresholds TH2, the first grayscale threshold TH1 is higher than the second grayscale threshold TH2. When the second grayscale value L (2) of the second data DAT2 is higher than the first grayscale threshold TH1 or lower than the second grayscale threshold TH2, step (b) determines the second grayscale of the second data DAT2 The value L (2) is not within the selected value range.

於此實施例中，選定值範圍可包含介於第一灰階臨界值TH1與第二灰階臨界值TH2之間的該些正常灰階值，亦即排除大於第一灰階臨界值TH1的最高灰階值與接近最高灰階值的該些 灰階值以及排除小於第二灰階臨界值TH2的最低灰階值與接近最低灰階值的該些灰階值。 In this embodiment, the selected value range may include the normal grayscale values between the first grayscale threshold value TH1 and the second grayscale threshold value TH2, that is, those that are greater than the first grayscale threshold value TH1 are excluded. The highest grayscale value and those close to the highest grayscale value The grayscale values and the lowest grayscale values that are smaller than the second grayscale critical value TH2 and those grayscale values that are close to the lowest grayscale value are excluded.

若以包含第0階灰階值L0~第255階灰階值L255的256階灰階為例，選定值範圍可介於第240階灰階值L240與第15階灰階值L15之間，亦即第一灰階臨界值TH1可以是第240階灰階值L240且第二灰階臨界值TH2可以是第15階灰階值L15，但不以此為限。 If a 256-level grayscale including the 0th-level grayscale value L0 to the 255th-level grayscale value L255 is taken as an example, the selected value range may be between the 240th-level grayscale value L240 and the 15th-level grayscale value L15. That is, the first grayscale threshold TH1 may be a 240th grayscale value L240 and the second grayscale threshold TH2 may be a 15th grayscale value L15, but is not limited thereto.

若步驟S12之判斷結果為是，代表第二資料DAT2的第二灰階值L(2)屬於介於第一灰階臨界值TH1與第二灰階臨界值TH2之間的該些正常灰階值，亦即目前資料的灰階值並不是極值或接近極值，因此，步驟S14可在充電時間內直接調整第二資料DAT2的第二驅動電壓V(2)，例如透過改變第二資料DAT2的第二灰階值的方式來調整第二資料DAT2的第二驅動電壓V(2)，藉以增加第二資料DAT2的充電速度，使其能在充電時間內快速充電至其所需的其所需的電壓值，但不以此為限。 If the judgment result of step S12 is yes, the second grayscale value L (2) representing the second data DAT2 belongs to the normal grayscales between the first grayscale threshold TH1 and the second grayscale threshold TH2. Value, that is, the grayscale value of the current data is not an extreme value or close to the extreme value. Therefore, in step S14, the second driving voltage V (2) of the second data DAT2 can be adjusted directly within the charging time, for example, by changing the second data The second gray level value of DAT2 is used to adjust the second driving voltage V (2) of the second data DAT2, so as to increase the charging speed of the second data DAT2 so that it can be quickly charged to its required time within the charging time. The required voltage value is not limited to this.

若步驟S12之判斷結果為否，代表第二資料DAT2的第二灰階值L(2)並不屬於介於第一灰階臨界值TH1與第二灰階臨界值TH2之間的該些正常灰階值，亦即目前資料的灰階值為極值或接近極值。因此，為了避免先前技術之缺點，步驟S16不能採用在充電時間內直接調整目前資料的驅動電壓之方式，而是採用在充電時間內調整前一筆資料的驅動電壓之方式，亦即在充電時間內調整第一資料DAT1的第一驅動電壓V(1)，例如透過改變第一資料 DAT1的第一灰階值L(1)之方式來調整第一資料DAT1的第一驅動電壓V(1)，但不以此為限。 If the judgment result of step S12 is NO, the second grayscale value L (2) representing the second data DAT2 does not belong to those normals between the first grayscale threshold TH1 and the second grayscale threshold TH2. The grayscale value, that is, the grayscale value of the current data is extreme or near extreme. Therefore, in order to avoid the disadvantages of the prior art, step S16 cannot adopt the method of directly adjusting the driving voltage of the current data during the charging time, but adopts the method of adjusting the driving voltage of the previous data during the charging time, that is, during the charging time. Adjust the first driving voltage V (1) of the first data DAT1, for example, by changing the first data The first gray level value L (1) of DAT1 is used to adjust the first driving voltage V (1) of the first data DAT1, but it is not limited thereto.

於實際應用中，步驟S16改變第一資料DAT1的第一灰階值L(1)之灰階值改變量可根據第一資料DAT1的第一驅動電壓V(1)與第二資料DAT2之第二驅動電壓V(2)之間的電壓差而決定，但不以此為限。 In practical applications, the amount of change in the grayscale value of the first grayscale value L (1) of the first data DAT1 may be changed according to the first driving voltage V (1) of the first data DAT1 and the second data DAT2. The voltage difference between the two driving voltages V (2) is determined, but not limited to this.

需說明的是，為了使人眼不易察覺資料的灰階值改變量所造成的亮度變化，資料的灰階值改變量亦可根據驅動電壓與亮度之對應關係進行調整。 It should be noted that, in order to make it difficult for the human eye to perceive the brightness change caused by the change in the grayscale value of the data, the change in the grayscale value of the data can also be adjusted according to the correspondence between the driving voltage and the brightness.

舉例而言，如圖4所示，當資料的灰階值改變發生在第一區間R1或第三區間R3時，例如資料的灰階值由第0階灰階值L0改變為第1階灰階值L1或是資料的灰階值由第255階灰階值L255改變為第254階灰階值L254，人眼難以分辨此灰階值改變量所造成的亮度變化；當資料的灰階值改變發生在第二區間R2時，例如資料的灰階值由第128階灰階值L128改變為第240階灰階值L240，人眼較易分辨此灰階值改變量所造成的亮度變化。 For example, as shown in FIG. 4, when the change of the grayscale value of the data occurs in the first interval R1 or the third interval R3, for example, the grayscale value of the data is changed from the 0th grayscale value L0 to the 1st grayscale. The gray level value L1 or the gray level value of the data is changed from the 255th gray level value L255 to the 254th gray level value L254. It is difficult for the human eye to distinguish the brightness change caused by the change of the gray level value; when the gray level value of the data When the change occurs in the second interval R2, for example, the grayscale value of the data is changed from the 128th grayscale value L128 to the 240th grayscale value L240. It is easier for the human eye to distinguish the brightness change caused by the change in the grayscale value.

接下來，將就步驟S12之判斷結果為否的兩種可能情形，亦即第二資料DAT2的第二灰階值L(2)高於第一灰階臨界值TH1或是第二資料DAT2的第二灰階值L(2)低於第二灰階臨界值TH2，進一步詳細說明。 Next, the two possible situations where the judgment result of step S12 is NO, that is, the second grayscale value L (2) of the second data DAT2 is higher than the first grayscale threshold TH1 or the second data DAT2. The second grayscale value L (2) is lower than the second grayscale threshold TH2, which will be further described in detail.

當第二資料DAT2的第二灰階值L(2)高於第一灰階臨 界值TH1時，步驟S16可調高第一資料DAT1之第一驅動電壓V(1)，使得第二資料DAT2的第二驅動電壓V(2)亦隨之升高。舉例而言，步驟S16可透過增加第一資料DAT1的第一灰階值L(1)之方式來調高第一資料DAT1之第一驅動電壓V(1)，但不以此為限。 When the second grayscale value L (2) of the second data DAT2 is higher than the first grayscale pro When the threshold value TH1, step S16 can increase the first driving voltage V (1) of the first data DAT1, so that the second driving voltage V (2) of the second data DAT2 also increases. For example, step S16 may increase the first driving voltage V (1) of the first data DAT1 by increasing the first gray level value L (1) of the first data DAT1, but it is not limited thereto.

於實際應用中，步驟S16增加第一資料DAT1的第一灰階值L(1)之灰階值增加量可根據第一資料DAT1的第一驅動電壓V(1)與第二資料DAT2的第二驅動電壓V(2)之間的電壓差而決定，但不以此為限。此外，灰階值增加量亦可根據如圖4所示驅動電壓與亮度之對應關係進行調整，致使人眼不易察覺灰階值增加量所造成之亮度變化，但亦不以此為限。 In practical applications, the increase in the grayscale value of the first grayscale value L (1) of the first data DAT1 in step S16 may be based on the first driving voltage V (1) of the first data DAT1 and the first data level of the second data DAT2. The voltage difference between the two driving voltages V (2) is determined, but not limited to this. In addition, the increase in the grayscale value can also be adjusted according to the corresponding relationship between the driving voltage and the brightness as shown in FIG. 4, which makes it difficult for the human eye to detect the brightness change caused by the increase in the grayscale value, but it is not limited to this.

類似地，當第二資料DAT2的第二灰階值L(2)低於第二灰階臨界值TH2時，步驟S16可調低第一資料DAT1的第一驅動電壓V(1)，使得第二資料DAT2的第二驅動電壓V(2)亦隨之降低。舉例而言，步驟S16可透過減少第一資料DAT1的第一灰階值L(1)之方式來調低第一資料DAT1的第一驅動電壓V(1)，但不以此為限。 Similarly, when the second grayscale value L (2) of the second data DAT2 is lower than the second grayscale threshold TH2, step S16 can reduce the first driving voltage V (1) of the first data DAT1, so that the first The second driving voltage V (2) of the second data DAT2 also decreases accordingly. For example, step S16 can reduce the first driving voltage V (1) of the first data DAT1 by reducing the first gray level value L (1) of the first data DAT1, but it is not limited thereto.

於實際應用中，步驟S16減少第一資料DAT1的第一灰階值L(1)之灰階值減少量可根據第一資料DAT1的第一驅動電壓V(1)與第二資料DAT2的第二驅動電壓V(2)之間的電壓差而決定，但不以此為限。此外，灰階值減少量亦可根據如圖4所示驅動電壓與亮度之對應關係而調整，致使人眼不易察覺灰階值減少量所造成之亮度變化。 In practical applications, the reduction in the grayscale value of the first grayscale value L (1) of the first data DAT1 in step S16 may be based on the first driving voltage V (1) of the first data DAT1 and the first driving voltage V (1) of the second data DAT2. The voltage difference between the two driving voltages V (2) is determined, but not limited to this. In addition, the reduction of the grayscale value can also be adjusted according to the corresponding relationship between the driving voltage and the brightness as shown in FIG. 4, making it difficult for the human eye to perceive the brightness change caused by the reduction of the grayscale value.

請參照圖5A，假設資料DAT欲由第0階灰階值L0上升至第255階灰階值L255，圖5A中之實線與虛線分別代表本發明與先前技術中之資料DAT的電壓變化曲線。如圖5A所示，在先前技術中，由於第255階灰階值L255已是最高灰階值，無法再透過傳統的數位補償法在充電時間TC內抬高目前資料的灰階值，導致虛線所示之資料DAT在充電時間TC內僅能由電壓值V0充電至電壓值V1，但仍無法順利地充電至其所需的電壓值V2，故會產生充電不足之現象；至於本發明之資料處理方法則可在預充電時間TP內先抬高前一筆資料的灰階值，例如在預充電時間TP內由第0階灰階值L0抬高一灰階變化量△L至較高的灰階值(L0+△L)，使得前一筆資料的驅動電壓亦隨之抬升，例如實線所示之資料DAT的電壓值在預充電時間TP內由電壓值V0抬升一電壓變化量△V至電壓值(V0+△V)。因此，在接下來的充電時間TC內，目前資料僅需由電壓值(V0+△V)充電至其所需的電壓值V2即可，例如在充電時間TC內，可透過將目前資料由灰階值(L0+△L)抬高至第255階灰階值L255之方式使得實線所示之資料DAT能夠順利地在充電時間TC內由電壓值(V0+△V)快速充電至其所需的電壓值V2，而不會有充電不足之現象產生。 Please refer to FIG. 5A. Assume that the data DAT is to be increased from the 0th gray level value L0 to the 255th gray level value L255. The solid line and the dashed line in FIG. 5A represent the voltage change curve of the data DAT in the present invention and the prior art . As shown in FIG. 5A, in the prior art, since the 255th-level grayscale value L255 is already the highest grayscale value, the grayscale value of the current data can no longer be raised during the charging time TC through the traditional digital compensation method, resulting in a dashed line The data shown in the data DAT can only be charged from the voltage value V0 to the voltage value V1 within the charging time TC, but still cannot be smoothly charged to its required voltage value V2, so the phenomenon of insufficient charging will occur; as for the data of the present invention The processing method can raise the gray scale value of the previous data within the precharge time TP, for example, from the 0th grayscale value L0 to a grayscale change amount ΔL to a higher gray value during the precharge time TP. The step value (L0 + △ L) causes the driving voltage of the previous data to rise accordingly. For example, the voltage value of the data DAT shown in the solid line is increased by the voltage value V0 within a precharge time TP by a voltage change amount △ V to the voltage. Value (V0 + △ V). Therefore, in the next charging time TC, the current data only needs to be charged from the voltage value (V0 + △ V) to its required voltage value V2. For example, during the charging time TC, the current data can be changed from grayscale The method of raising the value (L0 + △ L) to the 255th-level grayscale value L255 enables the data DAT shown in the solid line to smoothly charge from the voltage value (V0 + △ V) to its required voltage within the charging time TC. The value is V2 without the phenomenon of insufficient charging.

請參照圖5B，假設資料DAT欲由第255階灰階值L255降低至第0階灰階值L0，圖5B中之實線與虛線分別代表本發明與先前技術中之資料DAT的電壓變化曲線。如圖5B所示，在先前技術 中，由於第0階灰階值L0已是最低灰階值，無法再透過傳統的數位補償法在放電時間TD內降低目前資料的灰階值，導致虛線所示之資料DAT在放電時間TD內僅能由原始的電壓值VN放電至電壓值V3，但仍無法順利地放電至其所需的電壓值V4，故會產生放電不足之現象；至於本發明之資料處理方法則可在預放電時間TP內先降低前一筆資料的灰階值，例如在預放電時間TP內由第255階灰階值L255降低一灰階變化量△L至灰階值(L255-△L)，使得前一筆資料的驅動電壓亦隨之降低，例如實線所示之資料DAT的電壓值在預放電時間TP內由電壓值VN降低一電壓變化量△V至電壓值(VN-△V)。因此，在接下來的放電時間TD內，目前資料僅需由電壓值(VN-△V)放電至其所需的電壓值V4即可，例如在放電時間TD內，可透過將目前資料由灰階值(L255-△L)降低至第0階灰階值L0之方式使得實線所示之資料DAT能夠在放電時間TD內順利地由電壓值(VN-△V)快速放電至其所需的電壓值V4，而不會有放電不足之現象產生。 Please refer to FIG. 5B. Assume that the data DAT is to be reduced from the 255th-level grayscale value L255 to the 0th-level grayscale value L0. The solid line and the dashed line in FIG. 5B represent the voltage change curves of the data DAT in the present invention and the prior art, respectively. . As shown in FIG. 5B, in the prior art In the middle, because the 0th gray level value L0 is already the lowest gray level value, the traditional data compensation method can no longer be used to reduce the gray level value of the current data within the discharge time TD, resulting in the data DAT shown in the dotted line within the discharge time TD. It can only be discharged from the original voltage value VN to the voltage value V3, but it cannot be discharged smoothly to its required voltage value V4, so the phenomenon of insufficient discharge will occur; as for the data processing method of the present invention, the pre-discharge time can be The gray scale value of the previous data is first reduced in TP, for example, the gray scale value ΔL is reduced from the 255th gray scale value L255 to the gray scale value (L255- △ L) within the pre-discharge time TP, so that the previous data The driving voltage is also reduced accordingly. For example, the voltage value of the data DAT shown by the solid line decreases from the voltage value VN by a voltage change amount ΔV to the voltage value (VN-ΔV) within the pre-discharge time TP. Therefore, in the next discharge time TD, the current data only needs to be discharged from the voltage value (VN- △ V) to its required voltage value V4. For example, in the discharge time TD, the current data can be changed from gray to gray. The method of reducing the level value (L255- △ L) to the 0th level grayscale value L0 enables the data DAT shown in the solid line to smoothly discharge from the voltage value (VN- △ V) to its required within the discharge time TD. The voltage value V4 will not cause the phenomenon of insufficient discharge.

接下來，將分別根據步驟S12之判斷結果的幾種可能實施例進行說明。 Next, several possible embodiments according to the determination result of step S12 will be described.

請參照圖6A，當步驟S12之判斷結果為否且目前資料DAT(n)的灰階值高於第一灰階臨界值時，代表目前資料DAT(n)的灰階值可能是最高灰階值或接近最高灰階值，因此，步驟S16可透過調高前一筆資料DAT(n-1)的驅動電壓之方式，例如將前一筆資料 DAT(n-1)的驅動電壓由電壓值VA調高一電壓變化量△V至電壓值(VA+△V)，使得實線所示之目前資料DAT(n)的電壓曲線亦隨之提高，而能比虛線所示之先前技術的資料電壓曲線更快速充電至其所需的電壓值VB，以避免先前技術中之充電不足的現象產生。 Please refer to FIG. 6A. When the judgment result of step S12 is NO and the gray level value of the current data DAT (n) is higher than the first gray level threshold value, the gray level value representing the current data DAT (n) may be the highest gray level Value or close to the highest gray level value, therefore, step S16 may be performed by increasing the driving voltage of the previous data DAT (n-1), for example, the previous data The driving voltage of DAT (n-1) is increased from the voltage value VA by a voltage change amount △ V to the voltage value (VA + △ V), so that the voltage curve of the current data DAT (n) shown by the solid line is also increased, And it can be charged to its required voltage value VB faster than the data voltage curve of the prior art shown by the dashed line to avoid the phenomenon of insufficient charging in the prior art.

請參照圖6B，當步驟S12之判斷結果為否且目前資料DAT(n)的灰階值低於第二灰階臨界值時，代表目前資料DAT(n)的灰階值可能是最低灰階值或接近最低灰階值，因此，步驟S16可透過調低前一筆資料DAT(n-1)的驅動電壓之方式，例如將前一筆資料DAT(n-1)的驅動電壓由電壓值VB調低一電壓變化量△V至電壓值(VB-△V)，使得實線所示之目前資料DAT(n)的電壓曲線亦隨之降低，而能比虛線所示之先前技術的資料電壓曲線更快速放電至其所需的電壓值VA，以避免先前技術中之放電不足的現象產生。 Please refer to FIG. 6B. When the judgment result of step S12 is NO and the gray level value of the current data DAT (n) is lower than the second gray level threshold value, the gray level value representing the current data DAT (n) may be the lowest gray level Value or close to the lowest gray level value, therefore, step S16 may be performed by reducing the driving voltage of the previous data DAT (n-1), for example, adjusting the driving voltage of the previous data DAT (n-1) by the voltage value VB. Lowering the voltage change by △ V to the voltage value (VB- △ V), the voltage curve of the current data DAT (n) shown by the solid line is also reduced accordingly, which can be more than the data voltage curve of the prior art shown by the dashed line. Discharge more quickly to its required voltage value VA to avoid under-discharge in the prior art.

請參照圖6C，當步驟S12之判斷結果為是且目前資料DAT(n)係由低灰階值上升至高灰階值時，代表目前資料DAT(n)的灰階值並非最高灰階值或接近最高灰階值，因此，步驟S14可直接調高目前資料DAT(n)的驅動電壓，使得目前資料DAT(n)能比虛線所示之先前技術的資料電壓曲線更快速充電至其所需的電壓值VB。 Please refer to FIG. 6C. When the judgment result of step S12 is YES and the current data DAT (n) rises from a low grayscale value to a high grayscale value, the grayscale value representing the current data DAT (n) is not the highest grayscale value or Close to the highest gray level value, therefore, step S14 can directly increase the driving voltage of the current data DAT (n), so that the current data DAT (n) can be charged to its required speed faster than the data voltage curve of the prior art shown by the dotted line. The voltage value VB.

請參照圖6D，當步驟S12之判斷結果為是且目前資料DAT(n)係由高灰階值降低至低灰階值時，代表目前資料DAT(n)的灰階值並非最低灰階值或接近最低灰階值，因此，步驟S14可直接 調低目前資料DAT(n)的驅動電壓，使得目前資料DAT(n)能比虛線所示之先前技術的資料電壓曲線更快速放電至其所需的電壓值VA。 Please refer to FIG. 6D. When the judgment result of step S12 is yes and the current data DAT (n) is reduced from a high grayscale value to a low grayscale value, the grayscale value representing the current data DAT (n) is not the lowest grayscale value Or close to the lowest grayscale value, so step S14 can be directly Lowering the driving voltage of the current data DAT (n) enables the current data DAT (n) to discharge to its required voltage value VA more quickly than the data voltage curve of the prior art shown by the dashed line.

綜合上述圖6A至圖6D之作法，即使液晶顯示面板上較遠離源極驅動器之一側的電阻電容延遲(RC delay)效應比靠近源極驅動器之一側來得嚴重，導致液晶顯示面板之不同畫素的充放電速度及效能不一致，本發明仍可根據步驟S12之不同判斷結果相對應地採用最適當的補償方式對液晶顯示面板之不同畫素進行補償，使得整個液晶顯示面板所顯示之畫面均具有正常之對比度差異，故能有效提升其顯示畫面的畫質均勻度，以提供給使用者良好的視覺感受。 Based on the above-mentioned methods of FIGS. 6A to 6D, even if the RC delay effect on the LCD panel is farther away from one side of the source driver than the one near the source driver, the liquid crystal display panel has a different picture. The charging and discharging speed and efficiency of the element are inconsistent. The present invention can still use the most appropriate compensation method to compensate different pixels of the liquid crystal display panel according to the different judgment results of step S12, so that the entire screen displayed by the liquid crystal display panel is uniform. It has a normal contrast difference, so it can effectively improve the uniformity of the picture quality of its display screen to provide users with a good visual experience.

根據本發明之另一具體實施例亦為一種資料處理方法。於此實施例中，資料處理方法係應用於液晶顯示面板，且液晶顯示面板包括複數條資料線。請參照圖7，圖7係繪示此實施例中之資料處理方法的流程圖。 Another specific embodiment according to the present invention is also a data processing method. In this embodiment, the data processing method is applied to a liquid crystal display panel, and the liquid crystal display panel includes a plurality of data lines. Please refer to FIG. 7, which is a flowchart illustrating a data processing method in this embodiment.

如圖7所示，資料處理方法可包括下列步驟：步驟S20：該複數條資料線中之一資料線分別傳輸第一資料DAT1及第二資料DAT2，其中第一資料DAT1與第二資料DAT2為同一幀(frame)畫面中對應於不同列的訊號；舉例而言，於同一幀(frame)畫面中，假設第一資料DAT1為對應於第二列的訊號且第二資料DAT2為對應於第五列的訊號，則第一資料DAT1的前一 列資料即為對應於第一列的訊號且第二資料DAT2的前一列資料即為對應於第四列的訊號，其餘可依此類推；步驟S22：分別判斷第一資料DAT1之第一灰階值及第二資料DAT2之第二灰階值是否位於選定值範圍內，其中選定值範圍係介於第一灰階臨界值與第二灰階臨界值之間；步驟S24：若步驟S22之判斷結果為第一資料DAT1之第一灰階值位於選定值範圍內且第二資料DAT2之第二灰階值位於選定值範圍外，則該方法調整第一資料DAT1之第一驅動電壓並維持第二資料DAT2之第二驅動電壓；步驟S26：若步驟S22之判斷結果為第一資料DAT1之第一灰階值位於選定值範圍外且第二資料DAT2之第二灰階值位於選定值範圍內，則該方法維持第一資料DAT1之第一驅動電壓並調整第二資料DAT2之第二驅動電壓；步驟S28：若步驟S22之判斷結果為第一資料DAT1之第一灰階值與第二資料DAT2之第二灰階值均位於選定值範圍內，則該方法分別調整第一資料DAT1之第一驅動電壓或第二資料DAT2之第二驅動電壓；以及步驟S30：若步驟S22之判斷結果為第一資料DAT1之第一灰階值與第二資料DAT2之第二灰階值均位於選定值範圍外，則該方法可依照影像品質調整第一資料DAT1和第二資料DAT2或只調整第一資料DAT1或只調整第二資料DAT2達到效果。 As shown in FIG. 7, the data processing method may include the following steps: Step S20: one of the plurality of data lines transmits the first data DAT1 and the second data DAT2 respectively, where the first data DAT1 and the second data DAT2 are The signals in the same frame correspond to different columns; for example, in the same frame, it is assumed that the first data DAT1 is the signal corresponding to the second column and the second data DAT2 is the signal corresponding to the fifth The first signal of the first data DAT1 The row of data is the signal corresponding to the first row and the first row of data of the second data DAT2 is the signal corresponding to the fourth row, and the rest can be deduced by analogy; step S22: the first gray level of the first data DAT1 is judged separately Whether the second grayscale value of DAT2 is within the selected value range, and the selected value range is between the first grayscale critical value and the second grayscale critical value; step S24: if the judgment of step S22 The result is that the first grayscale value of the first data DAT1 is within the selected value range and the second grayscale value of the second data DAT2 is outside the selected value range, then the method adjusts the first driving voltage of the first data DAT1 and maintains the first The second driving voltage of the second data DAT2; Step S26: if the judgment result of step S22 is that the first grayscale value of the first data DAT1 is outside the selected value range and the second grayscale value of the second data DAT2 is within the selected value range , The method maintains the first driving voltage of the first data DAT1 and adjusts the second driving voltage of the second data DAT2; Step S28: If the judgment result of Step S22 is the first grayscale value of the first data DAT1 and the second data The second gray level value of DAT2 Both are within the selected value range, the method adjusts the first driving voltage of the first data DAT1 or the second driving voltage of the second data DAT2 respectively; and step S30: if the judgment result of step S22 is the first of the first data DAT1 The grayscale value and the second grayscale value of the second data DAT2 are both outside the selected value range. Then the method can adjust the first data DAT1 and the second data DAT2 according to the image quality or only the first data DAT1 or only the second data. Data DAT2 achieved results.

於實際應用中，由於步驟S24及S28均已直接調整第一資料DAT1的第一驅動電壓，已可提升第一資料DAT1的充電或放電速度，故第一資料DAT1的前一列資料的驅動電壓不需受調整；反之，由於步驟S26及S30均維持第一資料DAT1的第一驅動電壓不變，故第一資料DAT1的前一列資料的驅動電壓需受調整，以提升第一資料DAT1的充電或放電速度。 In practical applications, since steps S24 and S28 have directly adjusted the first driving voltage of the first data DAT1, the charging or discharging speed of the first data DAT1 can be increased, so the driving voltage of the data in the previous row of the first data DAT1 is not Need to be adjusted; conversely, since the first driving voltage of the first data DAT1 is maintained in steps S26 and S30, the driving voltage of the previous data of the first data DAT1 needs to be adjusted to improve the charging of the first data DAT1 or Discharge speed.

同理，由於步驟S26及S28均已調整第二資料DAT2之第二驅動電壓，已可提升整第二資料DAT2的充電或放電速度，故第二資料DAT2的前一列資料的驅動電壓不需受調整；反之，由於步驟S24及S30均維持第二資料DAT2的第二驅動電壓不變，故第二資料DAT2的前一列資料的驅動電壓需受調整，以提升第二資料DAT2的充電或放電速度。 Similarly, since the second driving voltage of the second data DAT2 has been adjusted in steps S26 and S28, the charging or discharging speed of the entire second data DAT2 can be increased, so the driving voltage of the previous row of data of the second data DAT2 need not be affected. Adjustment; on the contrary, since both the steps S24 and S30 keep the second driving voltage of the second data DAT2 unchanged, the driving voltage of the previous row of data of the second data DAT2 needs to be adjusted to increase the charging or discharging speed of the second data DAT2 .

相較於先前技術，根據本發明之資料處理方法可應用於任何像素架構下之高解析度及高更新頻率的液晶顯示面板，其能夠有效改善液晶顯示面板在最高灰階值或最低灰階值附近的充電極限補償問題，藉以避免如同先前技術中之液晶顯示面板的顯示畫面出現上下不一致的問題，故能有效提升液晶顯示面板之顯示畫面的畫質，以提供使用者良好的視覺感受。 Compared with the prior art, the data processing method according to the present invention can be applied to a liquid crystal display panel with high resolution and high update frequency under any pixel architecture, which can effectively improve the liquid crystal display panel at the highest grayscale value or the lowest grayscale value. The nearby charging limit compensates the problem, so as to avoid the problem of inconsistency between the display screen of the liquid crystal display panel as in the prior art. Therefore, the picture quality of the display screen of the liquid crystal display panel can be effectively improved to provide users with a good visual experience.

由以上較佳具體實施例之詳述，係希望能更加清楚描述本發明之特徵與精神，而並非以上述所揭露的較佳具體實施例來對本發明之範疇加以限制。相反地，其目的是希望能涵蓋各 種改變及具相等性的安排於本發明所欲申請之專利範圍的範疇內。藉由以上較佳具體實施例之詳述，係希望能更加清楚描述本發明之特徵與精神，而並非以上述所揭露的較佳具體實施例來對本發明之範疇加以限制。相反地，其目的是希望能涵蓋各種改變及具相等性的安排於本發明所欲申請之專利範圍的範疇內。 From the detailed description of the above preferred embodiments, it is hoped that the features and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. Instead, the goal is to cover all Such changes and equivalent arrangements are within the scope of the patents to be applied for in the present invention. With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention can be more clearly described, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the patents to be applied for in the present invention.

Claims (15)

一種資料處理方法，應用於一液晶顯示面板，該液晶顯示面板包括複數條資料線，該資料處理方法包括下列步驟：(a)該複數條資料線中之一資料線依序傳輸一第(n-1)資料及一第n資料，其中n為大於1的正整數；(b)判斷該第n資料之一第n灰階值是否位於一選定值範圍內，其中該選定值範圍係介於一第一灰階臨界值與一第二灰階臨界值之間；(c)若步驟(b)之判斷結果為否，調整該第(n-1)資料之一第(n-1)驅動電壓；以及(c’)若步驟(b)之判斷結果為是，直接調整該第n資料之一第n驅動電壓。A data processing method is applied to a liquid crystal display panel. The liquid crystal display panel includes a plurality of data lines. The data processing method includes the following steps: (a) one of the plurality of data lines sequentially transmits a (n) -1) data and an n-th data, where n is a positive integer greater than 1; (b) determining whether the n-th gray level value of one of the n-th data is within a selected value range, where the selected value range is between Between a first grayscale threshold and a second grayscale threshold; (c) if the judgment result of step (b) is no, adjust the (n-1) th drive of one of the (n-1) th data Voltage; and (c ') if the judgment result of step (b) is yes, directly adjust the nth driving voltage of one of the nth data. 如申請專利範圍第1項所述之資料處理方法，其中步驟(c)係透過改變該第(n-1)資料之一第(n-1)灰階值之方式來調整該第(n-1)資料之該第(n-1)驅動電壓。The data processing method described in item 1 of the scope of patent application, wherein step (c) is to adjust the (n- 1) The (n-1) th driving voltage of the data. 如申請專利範圍第2項所述之資料處理方法，其中步驟(c)改變該第(n-1)灰階值之一灰階值改變量係根據該第(n-1)資料之該第(n-1)驅動電壓與該第n資料之該第n驅動電壓之間的電壓差而決定。The data processing method as described in item 2 of the scope of patent application, wherein step (c) changes one of the (n-1) grayscale values by changing the grayscale value according to the first (n-1) The voltage difference between the driving voltage and the n-th driving voltage of the n-th data is determined. 如申請專利範圍第3項所述之資料處理方法，其中該灰階值改變量係根據電壓與亮度之對應關係而調整，致使人眼不易察覺該灰階值改變量所造成之亮度變化。The data processing method as described in item 3 of the scope of patent application, wherein the amount of change in the grayscale value is adjusted according to the corresponding relationship between the voltage and the brightness, so that it is difficult for human eyes to perceive the change in brightness caused by the amount of change in the grayscale value. 如申請專利範圍第1項所述之資料處理方法，其中該第一灰階臨界值高於該第二灰階臨界值，當該第n灰階值高於該第一灰階臨界值或低於該第二灰階臨界值時，步驟(b)判定該第n灰階值不位於該選定值範圍內。The data processing method according to item 1 of the scope of patent application, wherein the first grayscale threshold value is higher than the second grayscale threshold value, and when the nth grayscale value is higher than the first grayscale threshold value or lower At the second grayscale threshold, step (b) determines that the nth grayscale value is not within the selected value range. 如申請專利範圍第5項所述之資料處理方法，其中當該第n灰階值高於該第一灰階臨界值時，步驟(c)調高該第(n-1)資料之該第(n-1)驅動電壓，使得該第n資料之該第n驅動電壓亦隨之升高。The data processing method as described in item 5 of the scope of patent application, wherein when the n-th grayscale value is higher than the first grayscale threshold, step (c) raises the first of the (n-1) th data. (n-1) The driving voltage causes the n-th driving voltage of the n-th data to increase accordingly. 如申請專利範圍第6項所述之資料處理方法，其中步驟(c)係透過增加該第(n-1)資料之一第(n-1)灰階值之方式來調高該第(n-1)資料之該第(n-1)驅動電壓。The data processing method as described in item 6 of the scope of patent application, wherein step (c) is to increase the (n-1) th gray level value by increasing one of the (n-1) th gray level values. -1) The (n-1) th driving voltage of the data. 如申請專利範圍第7項所述之資料處理方法，其中步驟(c)增加該第(n-1)灰階值之一灰階值增加量係根據該第(n-1)資料之該第(n-1)驅動電壓與該第n資料之該第n驅動電壓之間的電壓差而決定。The data processing method as described in item 7 of the scope of patent application, wherein step (c) increases one of the (n-1) grayscale values. The grayscale value increase amount is based on the (n-1) data of the first (n-1) The voltage difference between the driving voltage and the n-th driving voltage of the n-th data is determined. 如申請專利範圍第8項所述之資料處理方法，其中該灰階值增加量可根據電壓與亮度之對應關係而調整，致使人眼不易察覺該灰階值增加量所造成之亮度變化。The data processing method described in item 8 of the scope of patent application, wherein the increase in the gray level value can be adjusted according to the correspondence between the voltage and the brightness, so that it is difficult for human eyes to detect the brightness change caused by the increase in the gray level value. 如申請專利範圍第4項所述之資料處理方法，其中當該第n灰階值低於該第二灰階臨界值時，步驟(c)調低該第(n-1)資料之該第(n-1)驅動電壓，使得該第n資料之該第n驅動電壓亦隨之降低。The data processing method as described in item 4 of the scope of patent application, wherein when the nth grayscale value is lower than the second grayscale threshold, step (c) lowers the first (n-1) th data of the first (n-1) The driving voltage causes the n-th driving voltage of the n-th data to decrease accordingly. 如申請專利範圍第10項所述之驅動方法，其中步驟(c)係透過減少該第(n-1)資料之一第(n-1)灰階值之方式來調低該第(n-1)資料之該第(n-1)驅動電壓。The driving method as described in item 10 of the scope of patent application, wherein step (c) is to reduce the (n-th) level by reducing the (n-1) th gray level value of one of the (n-1) th data. 1) The (n-1) th driving voltage of the data. 如申請專利範圍第11項所述之資料處理方法，其中步驟(c)減少該第(n-1)灰階值之一灰階值減少量係根據該第(n-1)資料之該第(n-1)驅動電壓與該第n資料之該第n驅動電壓之間的電壓差而決定。The data processing method according to item 11 of the scope of patent application, wherein step (c) reduces one of the (n-1) grayscale values. The grayscale value reduction amount is based on the (n-1) data of the first (n-1) The voltage difference between the driving voltage and the n-th driving voltage of the n-th data is determined. 如申請專利範圍第12項所述之資料處理方法，其中該灰階值減少量可根據電壓與亮度之對應關係而調整，致使人眼不易察覺該灰階值減少量所造成之亮度變化。The data processing method as described in item 12 of the scope of the patent application, wherein the reduction of the grayscale value can be adjusted according to the corresponding relationship between voltage and brightness, so that it is difficult for human eyes to detect the brightness change caused by the reduction of the grayscale value. 如申請專利範圍第1項所述之資料處理方法，其中該資料線係分別於一第一時間及一第二時間傳輸該第(n-1)資料及該第n資料，且該第一時間早於該第二時間。The data processing method described in item 1 of the scope of patent application, wherein the data line transmits the (n-1) th data and the nth data at a first time and a second time, respectively, and the first time Earlier than this second time. 如申請專利範圍第1項所述之資料處理方法，其中步驟(c’)係透過改變該第n資料之該第n灰階值的方式來調整該第n資料之該第n驅動電壓。The data processing method according to item 1 of the scope of patent application, wherein step (c ') is to adjust the nth driving voltage of the nth data by changing the nth grayscale value of the nth data.
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