TW201028905A - Substrate, in-cell touch panel, display and driving method thereof - Google Patents
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201028905 χ *» ^ j / ya. r-%. 六、發明說明： 【發明所屬之技術領域】 本發明是有關於-種基板、内嵌式觸控面板、顯示器 及其驅動方法，且特別是有關於―種提高感測能力之基 板、内嵌式觸控面板、顯示器及其驅動方法。 【先前技術】201028905 χ *» ^ j / ya. r-%. VI. Description of the Invention: [Technical Field] The present invention relates to a substrate, an in-cell touch panel, a display, and a driving method thereof, and particularly A substrate, an in-cell touch panel, a display, and a driving method thereof for improving sensing capability. [Prior Art]
顯示器近年㈣發麟勢，即是支援觸控螢幕 α圓h_en)的功能’而在ipw推出後，更是再度掀 起波熱潮。過去液晶顯示面板與觸控榮幕是分開生產再 進打組震的、，也就是將觸控鸯幕外掛於液晶顯示面板之 外。然而’為了提高液晶顯示面板的附加價值，面板業者 也開始朝内篏式觸控面板（In_eell TGueh p薦丨）的方向發 展0 清同時參照第1圖、第2圖及第3圖，第1圖繪示係 為，統内嵌式觸控面板之局部電路圖，第2 圖繪示係為傳 統掃描^號之部分時序圖，第3圖繪示係為感測電流之時 ❿序圖。，統内嵌式觸控面板10包括像素uo、感測單元 120掃插線130、資料線14〇及讀取線15〇。掃描線13〇 用以傳輸掃描信號G(n)，至G(n+2)，，且掃描信號G(n)，至 G(=+2)係於位準Vgh及Vgl之間變化。其中，位準Vgl 與讀取線150上之偏壓⑽狀實質上相同，以關閉非進行 感1之感解A 12G ^掃描信號g⑻，至G(n+2)，依序致能 各掃描線130，n « 以依序驅動各列像素110及感測單元120。 例來說，掃描信號G(n)，於區間T1驅動第1列之像素110 及感測單元1 1 4a , υ，而輙插信號G(n+1)’於區間T2驅動第2 3 201028905 ' ’In recent years, the display has been used to support the touch screen alpha circle h_en). After the launch of ipw, it has once again set off a wave of enthusiasm. In the past, the liquid crystal display panel and the touch screen were separately produced and then shocked, that is, the touch screen was externally attached to the liquid crystal display panel. However, in order to increase the added value of the liquid crystal display panel, the panel industry has also begun to develop toward the in-cell touch panel (In_eell TGueh p recommended). Also refer to Figure 1, Figure 2 and Figure 3, first. The figure shows a partial circuit diagram of the in-cell touch panel, the second figure shows a part of the timing diagram of the conventional scanning, and the third figure shows the timing diagram of the sensing current. The in-cell touch panel 10 includes a pixel uo, a sensing unit 120, a scan line 130, a data line 14A, and a read line 15A. The scan line 13A is used to transmit the scan signal G(n) to G(n+2), and the scan signal G(n) to G(=+2) varies between the levels Vgh and Vgl. Wherein, the level Vgl is substantially the same as the bias voltage (10) on the read line 150, so as to turn off the non-sensing 1 sense A 12G ^ scan signal g(8) to G(n+2), sequentially enabling each scan. Lines 130, n « drive each column of pixels 110 and sensing unit 120 in sequence. For example, the scan signal G(n) drives the pixel 110 of the first column and the sensing unit 1 1 4a, υ in the interval T1, and the interpolation signal G(n+1)' drives the second 3 201028905 in the interval T2. ' '
i w^/y^A 列之像素110及感測單元120;且掃描信號G(n+2)’於區間 T3驅動第3列之像素110及感測單元120。The pixel 110 and the sensing unit 120 of the i w^/y^A column; and the scanning signal G(n+2)' drives the pixel 110 of the third column and the sensing unit 120 in the interval T3.
進一步來說，像素110包括開關Q1、液晶電容CLC 及儲存電容Cst。開關Q1係受控於掃描線130以選擇性地 將資料線140上的資料訊號傳送至液晶電容CLC及儲存電 容Cst。感測單元120包括由薄膜電晶體所形成之光電二 極體Q2(Photo Diode)，光電二極體Q2根據外部光線強弱 對應地輸出感測電流i(如第3圖繪示）。前述感測單元120 係根據讀取線150及掃描線130之間的電壓差來決定是否 輸出光電二極體Q2之感測電流i。 然而，讀取線150上之偏壓Vbias及掃描線130上之 電壓必須要相當穩定地關閉其他非進行感測之感測單元 120，否則訊雜比會很糟。此外，傳統内嵌式觸控面板10 一次僅能致能一列感測單元120，導致感測單元120的面 積必須要對應地增加方可感應足夠的感測電流i，而造成 晝素110開口率的下降。再者，由於傳統内嵌式觸控面板 ❿ 10之各掃描線130係受控於個別之掃描信號，所以，需要 較多的掃描驅動積體電路致能各列掃描線130。 【發明内容】 本發明係有關於一種基板、内嵌式觸控面板、顯示器 及其驅動方法，其至少具有如下優點： 一、 精簡的電路設計； 二、 具有自我檢測功能； 三、 不需降低開口率，即具有極佳的感測能力； 4 201028905 四、 具有極佳的訊雜比；以及 五、 減少掃描驅動積體電路的使用個數。 根據本發明，提出一種基板。基板包括第一像素、第 二像素、第三像素、第一感測單元、第二感測單元、第三 感測單元、第一掃描線、第二掃描線、第三掃描線、資料 線、讀取線及控制單元。第一掃描線係受控於第一掃描信 號，以於相鄰之第一掃描區間及第二掃描區間驅動第一像 素及第一感測單元。第二掃描線係受控於第二掃描信號， ^ 以於第一掃描區間驅動第二像素及第二感測單元。第三掃 描線係受控於第一掃描信號及第二掃描信號，以於第一掃 描區間驅動第三像素及第三感測單元。資料線係連接至第 ‘ 一像素、第二像素及第三像素。讀取線係連接至第一感測 單元、第二感測單元及第三感測單元。控制單元用以根據 第一掃描信號及第二掃描信號致能第三掃描線。 根據本發明，提出一種内嵌式觸控面板。内嵌式觸控 面板包括基板、掃描驅動器及資料驅動器。基板包括第一 Φ 像素、第二像素、第三像素、第一感測單元、第二感測單 元、第三感測單元、第一掃描線、第二掃描線、第三掃描 線、資料線、讀取線及控制單元。第一掃描線係受控於第 一掃描信號，以於相鄰之第一掃描區間及第二掃描區間驅 動第一像素及第一感測單元。第二掃描線係受控於第二掃 描信號，以於第一掃描區間驅動第二像素及第二感測單 元。第三掃描線係受控於第一掃描信號及第二掃描信號， 以於第一掃描區間驅動第三像素及第三感測單元。資料線 係連接至第一像素、第二像素及第三像素。讀取線係連接 5 201028905 i W4y/y 尸 a 至第一感測單元、第二感測單元及第三感測單元。控制單 元用以根據第一掃描信號及第二掃描信號致能第三掃描 線。資料驅動器係連接至資料線，而掃描驅動器係連接至 第一掃描線及第二掃描線。 根據本發明，提出一種顯示器。顯示器包括内嵌式觸 控面板及背光模組。内嵌式觸控面板包括基板、掃描驅動 器及資料驅動器。基板包括第一像素、第二像素、第三像 素、第一感測單元、第二感測單元、第三感測單元、第一 掃描線、第二掃描線、第三掃描線、資料線、讀取線及控 制單元。第一掃描線係受控於第一掃描信號，以於相鄰之 第一掃描區間及第二掃描區間驅動第一像素及第一感測 單元。第二掃描線係受控於第二掃描信號，以於第一掃描 區間驅動第二像素及第二感測單元。第三掃描線係受控於 第一掃描信號及第二掃描信號，以於第一掃描區間驅動第 三像素及第三感測單元。資料線係連接至第一像素、第二 像素及第三像素。讀取線係連接至第一感測單元、第二感 測單元及第三感測單元。控制單元用以根據第一掃描信號 及第二掃描信號致能第三掃描線。資料驅動器係連接至資 料線，而掃描驅動器係連接至第一掃描線及第二掃描線。 背光模組提供内嵌式觸控面板所需光源。 根據本發明，提出一種内嵌式觸控面板之驅動方法。 驅動方法包括：於第一掃描區間，輸出第一掃描信號至第 一掃描線以驅動第一像素及第一感測單元，並輸出第二掃 描信號至第二掃描線以驅動第二像素及第二感測單元，且 根據第一掃描信號及第二掃描信號致能第三掃描線以驅 201028905 動第三像素及第三感測單元，其中第一感測單元、第二感 /則單元及第三感測單元係分別輸出第一感測訊號、第二感 測訊號及第三感測訊號至讀取線；以及於相鄰於第一掃描 區間之第二掃描區間，輸出第一掃描信號至第一掃描線以 驅動第—像素及第一感測單元，並由第一感測單元輸出第 四感測號至讀取線。 為讓本發明之上述内容能更明顯易懂，下文特舉一較 佳實施例，並配合所附圖式，作詳細說明如下： ❼ 【實施方式】 請同時參照第4圖、第5圖及第6圖，第4圖繪示係 為顯示器之示意圖，第5圖繪示係為依照本發明較佳實施 * 例之一種内嵌式觸控面板之局部示意圖，第6圖繪示係為 對應於第5圖之信號時序圖。顯示器80包括内嵌式觸控 面板60及背光模組70,且背光模組70用以提供内嵌式觸 控面板60所需光源。内嵌式觸控面板60包括基板30、掃 描驅動器40及資料驅動器50。基板30包括像素310(η) ❹至31〇(η+2)、感測單元320(η)至320(η+2)、掃描線330(η) 至330(η+2)、資料線340、讀取線350及控制單元36〇。 掃描驅動器40係連接至掃描線330(η)至330〇ι+2>， 並輸出掃描信號G(n)及G(n+1)。其中，掃描信號G(n)及 G(n+1)係於位準Vgh及Vgl之間變化，且位準Vgi與讀取 線350上之偏壓Vbias實質上相同，以關閉非進行感測之 感測單元。而資料驅動器50係連接至資料線34〇，並輸出 像素資料。資料線340係連接至像素31〇(n)、像素31〇(n+1) 及像素310(n+2)，而讀取線350係連接至感測單元 201028905Further, the pixel 110 includes a switch Q1, a liquid crystal capacitor CLC, and a storage capacitor Cst. The switch Q1 is controlled by the scan line 130 to selectively transmit the data signal on the data line 140 to the liquid crystal capacitor CLC and the storage capacitor Cst. The sensing unit 120 includes a photodiode Q2 (photodiode) formed by a thin film transistor, and the photodiode Q2 correspondingly outputs a sensing current i according to the intensity of the external light (as shown in FIG. 3). The sensing unit 120 determines whether to output the sensing current i of the photodiode Q2 according to the voltage difference between the read line 150 and the scan line 130. However, the bias voltage Vbias on the read line 150 and the voltage on the scan line 130 must be relatively stable to turn off the other non-sensing sensing unit 120, otherwise the odds ratio will be poor. In addition, the conventional in-cell touch panel 10 can only enable one column of the sensing unit 120 at a time, so that the area of the sensing unit 120 must be correspondingly increased to sense a sufficient sensing current i, thereby causing the aperture ratio of the pixel 110. Decline. Moreover, since the scan lines 130 of the conventional in-cell touch panel 10 are controlled by individual scan signals, more scan drive integrated circuits are required to enable the scan lines 130 of each column. SUMMARY OF THE INVENTION The present invention relates to a substrate, an in-cell touch panel, a display, and a driving method thereof, which have at least the following advantages: 1. A simplified circuit design; 2. A self-detection function; 3. No need to reduce The aperture ratio, that is, has excellent sensing capability; 4 201028905 4. Excellent signal-to-noise ratio; and 5. Reduce the number of scan-drive integrated circuits. According to the invention, a substrate is proposed. The substrate includes a first pixel, a second pixel, a third pixel, a first sensing unit, a second sensing unit, a third sensing unit, a first scan line, a second scan line, a third scan line, a data line, Read the line and control unit. The first scan line is controlled by the first scan signal to drive the first pixel and the first sensing unit in the adjacent first scan interval and second scan interval. The second scan line is controlled by the second scan signal to drive the second pixel and the second sensing unit in the first scan interval. The third scan line is controlled by the first scan signal and the second scan signal to drive the third pixel and the third sensing unit in the first scan interval. The data line is connected to the first ‘one pixel, the second pixel, and the third pixel. The read line is connected to the first sensing unit, the second sensing unit, and the third sensing unit. The control unit is configured to enable the third scan line according to the first scan signal and the second scan signal. According to the present invention, an in-cell touch panel is proposed. The in-cell touch panel includes a substrate, a scan driver, and a data driver. The substrate includes a first Φ pixel, a second pixel, a third pixel, a first sensing unit, a second sensing unit, a third sensing unit, a first scan line, a second scan line, a third scan line, and a data line , read line and control unit. The first scan line is controlled by the first scan signal to drive the first pixel and the first sensing unit in the adjacent first scan interval and second scan interval. The second scan line is controlled by the second scan signal to drive the second pixel and the second sensing unit in the first scan interval. The third scan line is controlled by the first scan signal and the second scan signal to drive the third pixel and the third sensing unit in the first scan interval. The data line is connected to the first pixel, the second pixel, and the third pixel. Read line system connection 5 201028905 i W4y/y corpse a to the first sensing unit, the second sensing unit and the third sensing unit. The control unit is configured to enable the third scan line according to the first scan signal and the second scan signal. The data driver is connected to the data line, and the scan driver is connected to the first scan line and the second scan line. According to the invention, a display is proposed. The display includes an in-line touch panel and a backlight module. The in-cell touch panel includes a substrate, a scan driver, and a data driver. The substrate includes a first pixel, a second pixel, a third pixel, a first sensing unit, a second sensing unit, a third sensing unit, a first scan line, a second scan line, a third scan line, a data line, Read the line and control unit. The first scan line is controlled by the first scan signal to drive the first pixel and the first sensing unit in the adjacent first scan interval and second scan interval. The second scan line is controlled by the second scan signal to drive the second pixel and the second sensing unit in the first scan interval. The third scan line is controlled by the first scan signal and the second scan signal to drive the third pixel and the third sensing unit in the first scan interval. The data line is connected to the first pixel, the second pixel, and the third pixel. The read line is connected to the first sensing unit, the second sensing unit, and the third sensing unit. The control unit is configured to enable the third scan line according to the first scan signal and the second scan signal. The data driver is connected to the data line, and the scan driver is connected to the first scan line and the second scan line. The backlight module provides the light source required for the in-cell touch panel. According to the present invention, a driving method of an in-cell touch panel is proposed. The driving method includes: outputting a first scan signal to the first scan line to drive the first pixel and the first sensing unit in the first scan interval, and outputting the second scan signal to the second scan line to drive the second pixel and the first a second sensing unit, and the third scanning line is enabled to drive the third pixel and the third sensing unit according to the first scanning signal and the second scanning signal, wherein the first sensing unit, the second sensing unit, and the second sensing unit The third sensing unit outputs a first sensing signal, a second sensing signal, and a third sensing signal to the reading line respectively; and outputs a first scanning signal in a second scanning interval adjacent to the first scanning interval. The first scan line is driven to the first pixel and the first sensing unit, and the fourth sensing unit outputs the fourth sensing number to the read line. In order to make the above description of the present invention more comprehensible, a preferred embodiment will be described below in detail with reference to the accompanying drawings. ❼ EMBODIMENT Please refer to FIG. 4 and FIG. 5 simultaneously. FIG. 6 is a schematic diagram showing a display, and FIG. 5 is a partial schematic view showing an in-cell touch panel according to a preferred embodiment of the present invention. FIG. 6 is a diagram corresponding to Signal timing diagram in Figure 5. The display 80 includes an in-cell touch panel 60 and a backlight module 70, and the backlight module 70 is used to provide a light source required for the in-cell touch panel 60. The in-cell touch panel 60 includes a substrate 30, a scan driver 40, and a data driver 50. The substrate 30 includes pixels 310(η) ❹ to 31〇(η+2), sensing units 320(n) to 320(n+2), scan lines 330(n) to 330(n+2), data lines 340. The reading line 350 and the control unit 36 are read. The scan driver 40 is connected to the scan lines 330(n) to 330〇+2>, and outputs scan signals G(n) and G(n+1). The scan signals G(n) and G(n+1) are changed between the levels Vgh and Vgl, and the level Vgi is substantially the same as the bias voltage Vbias on the read line 350 to turn off non-sensing. Sensing unit. The data driver 50 is connected to the data line 34, and outputs pixel data. The data line 340 is connected to the pixel 31〇(n), the pixel 31〇(n+1), and the pixel 310(n+2), and the read line 350 is connected to the sensing unit 201028905
TW4979FA 320(n)、感測單元320(n+l)及感測單元320(n+2)。其中， 感測單元320(n)、感測單元320(n+l)及感測單元320(n+2) 例如為光電電晶體(Photo Transistor)或光電二極體(ph〇t〇 Diode)。 掃描線330(n)係受控於掃描信號G(n)’以於相鄰之掃 描區間T4及掃描區間T5驅動第η列之像素31 〇(n)及感測 單元320(n) ’使得感測單元32〇(n)輸出感測電流i(n)。而 掃描線330(n+2)係受控於掃描信號G(n+1)，以於掃描區間 T5驅動第n+2列之像素310(n+2)及感測單元320(n+2)， 使得感測單元320(n+2)輸出感測電流i(n+2)。 控制單元360例如係位於非顯示區，且控制單元 例如係由開關或邏輯電路等精簡的電路設計所實現。控制 單元360根據掃描信號G(n)及掃描信號G(n+1)致能掃描線 330(n+l)。掃描線330(n+l)並受控於掃描信號G(n)及掃描 信號G(n+1) ’以於掃描區間T4驅動第n+1列之像素 310(n+l)及感測單元320(n+l)，使得感測單元320(n+2)輸 出感測電流i(n+2)。所以，於掃描區間T4，讀取線350之 電流it〇t等於i(n)+i(n+l)+i(n+2);而於掃描區間T5，讀取 線350之電流itot等於感測電流j(n)。 如此一來，讀取線350之電流丨⑻將提高為傳統的3 倍，而使得内嵌式觸控面板60具有極佳的訊雜比。再者， 因為讀取線350之電流it〇t已提高為傳統的3倍，使得感 測單元不需較大的面積即可獲得足夠的感測電流，而大幅 提尚基板30上像素31〇(n)〜31〇(n+2)的開口率。此外，掃 描驅動器40不需個別提供掃描信號至每一條掃描線，因 201028905 此’ 1大1¾減少掃描驅動積體電路的使用個數。 ^同時參照第7圖、第8圖及第9圖，第7圖繪示係 2第種基板之局部電路圖，第8圖係為對應於第7圖之 L號時^圖，第9圖繪示係為讀取線之電流波形圖。前述 第5圖繪不之基板3〇於第7圖係以基板3〇〇)表示。進一 =來說，像素310(h)至31〇(η+4)分別包括開關Qb液晶電 令cLC及儲存電容Cst，且開關Qi用以選擇性地將資料線 340上的資料訊號傳送至液晶電容Clc及儲存電容匸切。前 φ 述第5圖綠示之控制單元360於第7圖繪示係以控制單元 360( 1 )表示。控制單元36〇(1)包括開關⑺及開關"， •而感測單元320(n)至320(n+4)分別包括光電二極體Q2。其 .中’開關Q卜光電二極體Q2、開關Q3及開關Q4例如為 薄膜電晶體。 於掃描區間T6，掃描線330(n)係受控於掃描信號G(n) 驅動感測單元32〇(n)並輸出感測電流i(n)，而掃描線 330(n+2)係受控於掃描信號G(n+1)驅動感測單元32〇(n+2) Φ 並輸出感測電流i(n+2)。控制單元360 ( 1 )之開關q3係 根據掃描信號G(n)及掃描信號G(n+1)之交集電性連接掃 描線330(n+2)至掃描線330(n+l)，以致能位於掃描線330(n) 及掃描線330(n+2)之間的掃描線33〇(n+l)，進而驅動感測 單元320(n+l)並輸出感測電流i(n+1)。所以，於掃描區間 T6，讀取線350之電流丨⑽等於i(n)+i(n+1)+i(n+2)。 之後於掃描區間T7，掃描線330(n)係受控於掃描信 號G(n)驅動感測單元320(n)並輪出感測電流i(n)，而掃描 線330(n+l)、掃描線330(n+2)、掃描線330(n+3)及掃描線 9 201028905 330(η+4)均非致能。所以，於掃描區間Τ7， 電流itot等於i(n)。以此類推，於掃描區間，線350之 之電流it〇t等於i(n+2)+i(n+3)+i(n+4)。而於板夤取線35〇 讀取線350之電流it〇t等於i(n+2)。 ； ~插區間丁9， 除此之外，内嵌式觸控面板6〇更較佳地具 測的功能。舉例來說，讀取線35〇之雷# . >、有自我檢 Τ6至T9依序為丨⑻+i(n+1)+i(n+2)、丨⑻、 叮田b間 i(n+2)+i(n+3)+i(n+4)及 i(n+2)。吾人藉由— 算，如i(n)+i(n+i )雕+2)]⑻·ί( β 、數學運 等各感測料之感測電流，可實現逐條感測的目 二面板6〇可以根據各感測單元之感測電流 以自我檢測是否有感測單元損壞。 相較第9圖及第3圖可發現，帛7圖之讀取線35〇之 提骨為讀取線15G的3倍，而具有較佳的感測 /丨八1丨比。此外，根據刖述之掃描順序，資料驅動器 ，刀別於掃插區間丁6至丁9依序輸出對應於像素31〇 (n+1)、像素 3l〇(n)、像素 31〇(n+3)及像素 3lG(n+2) 之像素資料。 一=同時參照第10圖及第11圖，第10圖繪示係為第 ，種土板<局部電路圖’第11圖係為對應於第10圖之信 =時序圖’其中第n圖係以未觸控的情況下作示意。前 述第5圖繪示之控制單元36〇於第1〇圖繪示係以^制單 兀^6〇(2)表示。控制單元360(2)包括開關Q5至Q10， 、 ：锋私k號G(n)至G(n+5)。開關Q5至Q7係受控 於掃描信蜆G(n)。 201028905 I rv 17 / 於掃描區間T10 ’掃描線33〇(n)係受控於掃描信號 G(n)驅動感測單元32〇(n)並輸出感測電流i(n)。開關q5 根據掃描信號G(n)及掃描信號G(n+1)致能掃描線 330(n+l) ’以驅動感測單元32〇(n+1)並輸出感測電流 i(n+l)。開關Q6根據掃描信號G⑻及掃描信號G(n+2)致 能掃描線330(n+2) ’以驅動感測單元320(n+2)並輸出感測 電流i(n+2)。開關Q7根據掃描信號G(n)及掃描信號G(n+3) 致能掃描線330(n+3)，以驅動感測單元320(n+3)並輸出感 • 測電流i(n+3)。所以’於掃描區間T10，讀取線350之電 流 it〇t 等於 i(n)+i(n+l)+i(n+2)+i(n+3)。 於掃描區間T11 ’掃描線330(n)係受控於掃描信號 G(n)驅動感測單元32〇(n)並輸出感測電流i(n)。開關q5 根據掃描信號G(n)及掃描信號G(n+1)致能掃描線 330(n+l) ’以驅動感測單元32〇(11+1)並輸出感測電流 i(n+l)。開關Q6根據掃描信號g⑻及掃描信號G(n+2)致 能掃描線330(n+2)，以驅動感測單元32〇(n+2)並輸出感測 ❹電流i(n+2)。所以，於掃描區間τιΐ，讀取線350之電流 it〇t 等於 i(n)+i(n+l)+i(n+2)。 於掃描區間T12，掃描線330(n)係受控於掃描信號 G(n)驅動感測單元320(n)並輸出感測電流i(n)。開關Q5 根據掃描信號G(n)及掃描信號G(n+1)致能掃描線 330(n+l) ’以驅動感測單元32〇(n+1)並輸出感測電流 ι(η+1)。所以，於掃描區間T12，讀取線350之電流itot等 於 i(n)+i(n+l)。 於掃描區間T13 ’掃描線330(n)係受控於掃描信號 11 201028905 .TW4979FA 320(n), sensing unit 320 (n+1), and sensing unit 320 (n+2). The sensing unit 320(n), the sensing unit 320(n+1), and the sensing unit 320(n+2) are, for example, a phototransistor or a photodiode (ph〇t〇Diode). . The scan line 330(n) is controlled by the scan signal G(n)' to drive the pixel 31 〇(n) of the nth column and the sensing unit 320(n)' in the adjacent scan interval T4 and scan interval T5. The sensing unit 32〇(n) outputs the sensing current i(n). The scan line 330 (n+2) is controlled by the scan signal G(n+1) to drive the pixel 310 (n+2) of the n+2th column and the sensing unit 320 (n+2) in the scan interval T5. ), causing the sensing unit 320 (n+2) to output the sensing current i(n+2). Control unit 360 is, for example, located in a non-display area, and the control unit is implemented, for example, by a simplified circuit design such as a switch or logic circuit. Control unit 360 enables scan line 330 (n+1) based on scan signal G(n) and scan signal G(n+1). The scan line 330 (n+1) is controlled by the scan signal G(n) and the scan signal G(n+1)' to drive the pixel 310 (n+l) of the n+1th column and the sensing in the scan interval T4. The unit 320 (n+1) causes the sensing unit 320 (n+2) to output a sensing current i(n+2). Therefore, in the scanning interval T4, the current it 〇t of the reading line 350 is equal to i(n)+i(n+l)+i(n+2); and in the scanning interval T5, the current itot of the reading line 350 is equal to The current j(n) is sensed. As a result, the current 丨(8) of the read line 350 will be increased by a factor of three, so that the in-cell touch panel 60 has an excellent signal-to-noise ratio. Moreover, since the current it〇t of the read line 350 has been increased to three times that of the conventional one, the sensing unit can obtain a sufficient sensing current without requiring a large area, and the pixel 31 on the substrate 30 is greatly increased. (n) The aperture ratio of ~31〇(n+2). In addition, the scan driver 40 does not need to separately provide a scan signal to each scan line, because the 201028905 reduces the number of scan drive integrated circuits used. ^ Referring to FIG. 7, FIG. 8 and FIG. 9 simultaneously, FIG. 7 shows a partial circuit diagram of the first substrate of the system 2, and FIG. 8 is a diagram corresponding to the L number of the seventh figure, and FIG. The display is the current waveform of the read line. The substrate 3 shown in the above fifth drawing is shown in Fig. 7 as a substrate 3). In other words, the pixels 310(h) to 31〇(η+4) respectively include the switch Qb liquid crystal power cLC and the storage capacitor Cst, and the switch Qi is used for selectively transmitting the data signal on the data line 340 to the liquid crystal. Capacitor Clc and storage capacitor are cut. The control unit 360 shown in Fig. 7 is represented by the control unit 360(1). The control unit 36〇(1) includes a switch (7) and a switch ", and the sensing units 320(n) to 320(n+4) respectively include a photodiode Q2. The middle switch Q photodiode Q2, switch Q3 and switch Q4 are, for example, thin film transistors. In the scanning interval T6, the scanning line 330(n) is controlled by the scanning signal G(n) to drive the sensing unit 32〇(n) and output the sensing current i(n), and the scanning line 330(n+2) is The sensing signal 32 〇(n+2) Φ is controlled by the scanning signal G(n+1) and the sensing current i(n+2) is output. The switch q3 of the control unit 360 (1) electrically connects the scan line 330 (n+2) to the scan line 330 (n+l) according to the intersection of the scan signal G(n) and the scan signal G(n+1), so that The scan line 33〇(n+1) between the scan line 330(n) and the scan line 330(n+2) can drive the sensing unit 320(n+1) and output the sensing current i(n+ 1). Therefore, in the scanning interval T6, the current 丨(10) of the reading line 350 is equal to i(n)+i(n+1)+i(n+2). Then in the scanning interval T7, the scanning line 330(n) is controlled by the scanning signal G(n) to drive the sensing unit 320(n) and rotate the sensing current i(n), and the scanning line 330(n+l) Scan line 330 (n+2), scan line 330 (n+3), and scan line 9 201028905 330 (n+4) are all disabled. Therefore, in the scanning interval Τ7, the current itot is equal to i(n). By analogy, in the scan interval, the current it 〇t of line 350 is equal to i(n+2)+i(n+3)+i(n+4). The current of the read line 350 is equal to i(n+2). ; ~ Insert the interval 9, in addition, the in-line touch panel 6 〇 more preferably measured function. For example, the reading line 35 〇之雷# . >, self-checking 6 to T9 in order is 丨(8)+i(n+1)+i(n+2), 丨(8), 叮田b间i (n+2)+i(n+3)+i(n+4) and i(n+2). By virtue of - calculation, such as i (n) + i (n + i) carving + 2)] (8) · ί (β, mathematics and other sensing materials of the sensing current, can achieve the purpose of sensing one by one The panel 6〇 can self-detect whether there is damage to the sensing unit according to the sensing current of each sensing unit. Compared with the figure 9 and FIG. 3, it can be found that the reading line 35 of the 帛7 figure is read. 3 times of the line 15G, and has a better sensing / 丨 丨 丨 丨 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Pixel data of 〇(n+1), pixel 3l〇(n), pixel 31〇(n+3), and pixel 3lG(n+2). One=see also Figure 10 and Figure 11, Figure 10 The display system is the first, the soil board <local circuit diagram 'the eleventh figure is the letter corresponding to the 10th figure = timing diagram' wherein the nth picture is shown without the touch. The foregoing fifth figure shows The control unit 36 is represented by the first drawing diagram, and the control unit 360(2) includes the switches Q5 to Q10, and: the front private k number G(n) to G. (n+5). Switches Q5 to Q7 are controlled by the scanning signal G(n). 201028905 I rv 17 / in the scanning interval T10 'the scanning line 33 〇 (n) is controlled by the scanning signal G (n) to drive the sensing unit 32 〇 (n) and output the sensing current i (n). The switch q5 is based on the scanning signal G ( n) and the scan signal G(n+1) enables the scan line 330(n+1) to drive the sensing unit 32(n+1) and output the sense current i(n+l). The switch Q6 is scanned according to The signal G(8) and the scan signal G(n+2) enable the scan line 330(n+2)' to drive the sensing unit 320(n+2) and output the sensing current i(n+2). The switch Q7 is based on the scan signal. G(n) and the scanning signal G(n+3) enable the scanning line 330(n+3) to drive the sensing unit 320(n+3) and output the sensing current i(n+3). In the scanning interval T10, the current it 〇t of the reading line 350 is equal to i(n)+i(n+l)+i(n+2)+i(n+3). In the scanning interval T11' scan line 330( n) is controlled by the scan signal G(n) to drive the sensing unit 32〇(n) and output the sensing current i(n). The switch q5 is caused by the scanning signal G(n) and the scanning signal G(n+1) The line 330(n+l) can be scanned to drive the sensing unit 32〇(11+1) and output the sensing current i(n+l). The switch Q6 is caused by the scanning signal g(8) and the scanning signal G(n+2) Can scan line 330 (n+2) for driving sense The unit 32 〇(n+2) outputs the sense ❹ current i(n+2). Therefore, in the scan interval τιΐ, the current at the read line 350 is equal to i(n)+i(n+l)+ i(n+2). In the scanning interval T12, the scanning line 330(n) is controlled by the scanning signal G(n) to drive the sensing unit 320(n) and output the sensing current i(n). The switch Q5 enables the scan line 330(n+1) according to the scan signal G(n) and the scan signal G(n+1) to drive the sensing unit 32(n+1) and output the sense current ι(η+ 1). Therefore, in the scanning interval T12, the current itot of the reading line 350 is equal to i(n) + i(n + l). The scan line 330(n) is controlled by the scan signal 11 201028905 in the scan interval T13'.
l W4y/ypA G(n)驅動感測單元32〇(n)並輸出感測電流i(n)。所以，於 掃描區間T13，讀取線350之電流it〇t等於i(n)。 於％描區間T14 ’掃摇線330(n+4)係受控於掃描信號 G(n+4)驅動感測單元320(n+4)並輸出感測電流i(n+4)。開 關Q8根據掃描信號G(n+4)及掃描信號G(n+1)致能掃描線 330(n+5) ’以驅動感測單元32〇(n+5)並輸出感測電流 ι(η+5) °開關Q9根據掃描信號G(n+4)及掃描信號G(n+2) 致能掃描線330(n+6) ’以驅動感測單元320(n+6)並輸出感 測電流i(n+6)。開關Ql〇根據掃描信號G(n+4)及掃描信號 ❹ G(n+3)致能掃描線330(n+7)，以驅動感測單元32〇(n+7)並 輸出感測電流i(n+7)。所以，於掃描區間T14,讀取線350 之電流 itot 等於 i(n+4)+i(n+5)+i(n+6)+i(n+7)。 於掃描區間T15，掃描線330(n+4)係受控於掃描信號 G(n+4)驅動感測單元320(n+4)並輸出感測電流i(n+4)。開 關Q8根據掃描信號G(n+4)及掃描信號G(n+1)致能掃描線 330(n+5) ’以驅動感測單元32〇(n+5)並輸出感測電流 ι(η+5) °開關Q9根據掃描信號G(n+4)及掃描信號G(n+2) ❹ 致能掃描線330(n+6)，以驅動感測單元320(n+6)並輸出感 測電流i(n+6)。所以’於掃描區間τΐ5，讀取線350之電 流 it〇t 等於 i(n+4)+i(n+5)+i(n+6)。 於掃描區間T16,掃描線330(n+4)係受控於掃描信號 G(n+4)驅動感測單元320(n+4)並輸出感測電流i(n+4)。開 關Q8根據掃描信號G(n+4)及掃描信號G(n+1)致能掃描線 330(n+5)，以驅動感測單元32〇(n+5)並輸出感測電流 ι(η+5) °所以’於掃描區間T16，讀取線35〇之電流。等 12 201028905 於 i(n+4)+i(n+5)。 於掃描區間T17，掃描線330(n+4)係受控於掃描信號 G(n+4)驅動感測單元320(n+4)並輸出感測電流i(n+4)。所 以，於掃描區間T17，讀取線350之電流itot等於i(n+4)。 同樣地，可藉由運算得到個別的感測電流i(n)、 i(n+l)、i(n+2)、i(n+3)、i(n+4)、i(n+5)、i(n+6)、i(n+7)等， 並且可以自我檢測。其方法和前述内容相同，在此不再贅 述0 ❹ Φ 請參照第12圖，其繪示係為基板之部分電路佈局 圖。第12圖繪示之3個像素310(n)係分別對應至紅色像 素、綠色像素及藍色像素。掃描線330及共同電極37〇係 形成於第一金屬層，而感測單元32〇、資料線34〇、讀取 線350、電容電極39〇及開關Q1的源極和汲極係形成於 第二金屬層，且半導體層410形成於開關Q1的源極和汲 極之間。感測單元320之一端經氧化銦錫38〇(IndiumTin Oxide，ITO)和接觸孔420電性連接第一金屬層和第二金屬 層，使其電位和掃描線330相同，而感測單元32〇之另一 =性連接至讀取線35〇,感測單元32()的二端之間具有 2體層彻。各像素電極與氧化㈣則同時形成 =像素(_，由接·和_ qi較極電性 電容電極_經由接觸孔補和像素電極43〇電性 連接，並與共同電極37〇之間形成儲存電容⑸ #料線340經開關Q1寫入之像素資料。 子 請同時參照第5圖、第6圖及第13圓 一 係為依照本發明較佳實施例之-種内心面=示 13 201028905 TW4979FA ’ * 動方法流程圖。驅動方法係用於上述内嵌式觸控面板⑹， 且包括如下步驟：首先如步驟1310所示，於掃^區間τ4， 掃描驅動器40輸出掃描信號G(n)至掃描線33〇以驅動 像素310(η)及感測單元320(n)。掃描驅動器4〇並於掃描區 間T4輸出掃描信號G(n+1)至掃描線330(n+2)以驅動像素 310(n+2)及感測單元320(n+2)。控制單元360於掃描區間 T4根據掃描信號G(n)及掃描信號G(n+1)致能掃描線 330(n+l) ’以驅動像素310(n+l)及感測單元320(n+l)。資 料驅動器50並於掃描區間T4輸出對應於像素31〇(n+1) Q 之畫素資料。因此在讀取線350上得到的電流itot等於感 測單元320(n)、320(n+l)和320(n+2)所分別輸出的感測電 流之總合 i(n)+i(n+l)+i(n+2)。 接著如步驟1320所示，於掃描區間T5，掃描驅動器 40輸出掃描信號G(n)至掃描線330(n)以驅動像素310(n) 及感測單元320(n)。讀取線350上得到的電流it()t等於第 一感測單元輸出的感測訊號。資料驅動器50並於掃描區 間T5輸出對應於像素3l〇(n)之晝素資料。其中，掃描區 ❹ 間T5係與掃描區間T4相鄰。 本發明上述實施例所揭露之基板、内嵌式觸控面板、 顯示器及驅動方法至少包括如下優點： 一、 精簡的電路設計； 二、 具有自我檢測功能； 三、 不需降低開口率，即具有極佳的感測能力； 四、 具有極佳的訊雜比；以及 五、 減少掃描驅動積體電路的使用個數。 201028905 1 yy ^ y / y L cv 綜上所述，雖然本發明已以一較佳實施例揭露如上， 然其並非用以限定本發明。本發明所屬技術領域中具有通 常知識者，在不脫離本發明之精神和範圍内，當可作各種 之更動與潤飾。因此，本發明之保護範圍當視後附之申請 專利範圍所界定者為準。 【圖式簡單說明】 第1圖繪示係為傳統内嵌式觸控面板之局部電路圖。 0 第2圖繪示係為傳統掃描信號之部分時序圖。 第3圖繪示係為感測電流之時序圖。 第4圖繪示係為顯示器之示意圖。 第5圖繪示係為依照本發明較佳實施例之一種内嵌 式觸控面板之局部示意圖。 第6圖繪示係為對應於第5圖之信號時序圖。 第7圖繪示係為第一種基板之局部電路圖。 第8圖係為對應於第7圖之信號時序圖。 φ 第9圖繪示係為讀取線之電流波形圖。 第10圖繪示係為第二種基板之局部電路圖。 第11圖係為對應於第10圖之信號時序圖。 第12圖繪示係為基板之部分電路佈局圖。 第13圖繪示係為依照本發明較佳實施例之一種内嵌 式觸控面板之驅動方法流程圖。 15 201028905l W4y/ypA G(n) drives the sensing unit 32〇(n) and outputs a sensing current i(n). Therefore, in the scanning interval T13, the current of the reading line 350 is equal to i(n). The % trace interval T14' sweep line 330 (n+4) is controlled by the scan signal G(n+4) to drive the sensing unit 320(n+4) and output the sense current i(n+4). The switch Q8 enables the scan line 330(n+5)' according to the scan signal G(n+4) and the scan signal G(n+1) to drive the sensing unit 32〇(n+5) and output the sense current ι ( η+5) ° switch Q9 enables scan line 330(n+6)' according to scan signal G(n+4) and scan signal G(n+2) to drive sense unit 320(n+6) and output sense Current i (n+6) is measured. The switch Q1〇 enables the scan line 330(n+7) according to the scan signal G(n+4) and the scan signal ❹G(n+3) to drive the sensing unit 32〇(n+7) and output the sensing current. i(n+7). Therefore, in the scanning interval T14, the current itot of the reading line 350 is equal to i(n+4)+i(n+5)+i(n+6)+i(n+7). In the scanning interval T15, the scanning line 330 (n+4) is controlled by the scanning signal G(n+4) to drive the sensing unit 320(n+4) and output the sensing current i(n+4). The switch Q8 enables the scan line 330(n+5)' according to the scan signal G(n+4) and the scan signal G(n+1) to drive the sensing unit 32〇(n+5) and output the sense current ι ( η+5) ° switch Q9 enables scan line 330(n+6) according to scan signal G(n+4) and scan signal G(n+2) 以 to drive sense unit 320(n+6) and output Sensing current i(n+6). Therefore, in the scanning interval τ ΐ 5, the current of the reading line 350 is equal to i(n+4)+i(n+5)+i(n+6). In the scanning interval T16, the scanning line 330 (n+4) is controlled by the scanning signal G(n+4) to drive the sensing unit 320(n+4) and output the sensing current i(n+4). The switch Q8 enables the scan line 330 (n+5) according to the scan signal G(n+4) and the scan signal G(n+1) to drive the sensing unit 32〇(n+5) and output the sense current ι ( η+5) ° So, in the scanning interval T16, the current of the line 35〇 is read. Etc 12 201028905 at i(n+4)+i(n+5). In the scanning interval T17, the scanning line 330 (n+4) is controlled by the scanning signal G(n+4) to drive the sensing unit 320(n+4) and output the sensing current i(n+4). Therefore, in the scanning interval T17, the current itot of the reading line 350 is equal to i(n+4). Similarly, individual sensing currents i(n), i(n+l), i(n+2), i(n+3), i(n+4), i(n+) can be obtained by operation. 5), i(n+6), i(n+7), etc., and can self-detect. The method is the same as the foregoing, and no further description is made herein. 0 ❹ Φ Please refer to FIG. 12, which is a partial circuit layout diagram of the substrate. The three pixels 310(n) shown in Fig. 12 correspond to red pixels, green pixels, and blue pixels, respectively. The scan line 330 and the common electrode 37 are formed on the first metal layer, and the sensing unit 32, the data line 34, the read line 350, the capacitor electrode 39, and the source and the drain of the switch Q1 are formed in the first A second metal layer is formed, and a semiconductor layer 410 is formed between the source and the drain of the switch Q1. One end of the sensing unit 320 is electrically connected to the first metal layer and the second metal layer via Indium Tin Oxide (ITO) and the contact hole 420 to make the potential the same as the scan line 330, and the sensing unit 32〇 The other one is connected to the read line 35A, and the two ends of the sensing unit 32() have a 2-body layer. Each of the pixel electrodes and the oxidation (4) simultaneously form a = pixel (_, which is electrically connected to the pixel electrode 43 via the contact hole and is electrically connected to the common electrode 37A). Capacitor (5) #Pixel data of 340 written by switch Q1. Please refer to Figure 5, Figure 6 and Figure 13 as a preferred embodiment of the present invention. The method of driving is applied to the above-mentioned in-cell touch panel (6), and includes the following steps: First, as shown in step 1310, in the sweep interval τ4, the scan driver 40 outputs the scan signal G(n) to The scan line 33A drives the pixel 310(n) and the sensing unit 320(n). The scan driver 4 outputs the scan signal G(n+1) to the scan line 330(n+2) to drive the pixel in the scan interval T4. 310 (n+2) and sensing unit 320 (n+2). The control unit 360 enables the scan line 330 (n+l) according to the scan signal G(n) and the scan signal G(n+1) in the scan interval T4. 'To drive the pixel 310 (n+1) and the sensing unit 320 (n+1). The data driver 50 outputs a picture corresponding to the pixel 31 〇(n+1) Q in the scanning interval T4. Therefore, the current itot obtained on the read line 350 is equal to the sum of the sense currents output by the sensing units 320(n), 320(n+l), and 320(n+2), respectively, i(n) +i(n+l)+i(n+2) Next, as shown in step 1320, in scan interval T5, scan driver 40 outputs scan signal G(n) to scan line 330(n) to drive pixel 310(n). And the sensing unit 320(n). The current it()t obtained on the reading line 350 is equal to the sensing signal output by the first sensing unit. The data driver 50 outputs the corresponding pixel 3l(n) in the scanning interval T5. The substrate data, the in-cell touch panel, the display and the driving method disclosed in the above embodiments of the present invention at least include the following advantages: 1. The simplification of the substrate is as follows: Circuit design; Second, with self-detection function; Third, no need to reduce the aperture ratio, that is, has excellent sensing capability; Fourth, has excellent signal-to-noise ratio; and five, reduce the use of scanning drive integrated circuit 201028905 1 yy ^ y / y L cv In summary, although the invention has been disclosed above in a preferred embodiment, It is not intended to limit the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention is attached. The definition of the scope of patent application shall prevail. [Simple description of the drawing] Figure 1 shows a partial circuit diagram of a conventional in-cell touch panel. 0 Figure 2 shows a partial timing diagram of a conventional scan signal. Figure 3 is a timing diagram showing the sense current. Figure 4 is a schematic diagram showing the display. Figure 5 is a partial schematic view of an in-cell touch panel in accordance with a preferred embodiment of the present invention. Figure 6 is a timing diagram of the signal corresponding to Figure 5. Figure 7 is a partial circuit diagram showing the first substrate. Figure 8 is a signal timing diagram corresponding to Figure 7. φ Figure 9 shows the current waveform of the read line. Figure 10 is a partial circuit diagram showing a second substrate. Figure 11 is a signal timing diagram corresponding to Figure 10. Figure 12 is a partial circuit layout diagram of the substrate. Figure 13 is a flow chart showing a driving method of an in-cell touch panel in accordance with a preferred embodiment of the present invention. 15 201028905
i w4y/yh*A 【主要元件符號說明】 10 :傳統内嵌式觸控面板 30、30(1)、30(2):基板 40 :掃描驅動器 50 :資料驅動器 60 :依照本發明較佳實施例之内嵌式觸控面板 70 :背光模組 110、310(n)〜310(n+7):像素 120、320(n)〜320(n+7):感測單元 130、330(n)〜330(n+7):掃描線 140、340 :資料線 150、350 :讀取線 360、360 ( 1 )、360 ( 2 ):控制單元 370 :共同電極 380 :氧化銦錫 390 :電容電極 410 :半導體層 420 :接觸孔 430 :像素電極 440 :接觸孔i w4y/yh*A [Description of main component symbols] 10: Conventional in-cell touch panel 30, 30(1), 30(2): substrate 40: scan driver 50: data driver 60: preferred embodiment in accordance with the present invention In-line touch panel 70: backlight module 110, 310 (n) ~ 310 (n + 7): pixels 120, 320 (n) ~ 320 (n + 7): sensing unit 130, 330 (n ) ~ 330 (n + 7): scan lines 140, 340: data lines 150, 350: read lines 360, 360 (1), 360 (2): control unit 370: common electrode 380: indium tin oxide 390: capacitor Electrode 410: semiconductor layer 420: contact hole 430: pixel electrode 440: contact hole
Ql、Q3〜Q10 :開關 Q2 :光電二極體 Clc :液晶電容 Cst :儲存電容 G’(n)〜G’(n+2)、G(n)〜G(n+5):掃描信號 201028905Ql, Q3~Q10: switch Q2: photodiode Clc: liquid crystal capacitor Cst: storage capacitor G'(n)~G'(n+2), G(n)~G(n+5): scan signal 201028905
A f T -TV I y XA f T -TV I y X
Vcom :共同電壓Vcom: common voltage
Vbias :偏壓Vbias: bias
Vgh、Vgl :位準 i、i(n)〜i(n+7):感測電流 it〇t .電流 T1〜T17 :掃描區間Vgh, Vgl: level i, i(n)~i(n+7): sense current it〇t. current T1~T17: scan interval
1717
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8780078B2 (en) | 2011-04-27 | 2014-07-15 | Lg Display Co., Ltd. | In-cell type touch panel |
| US9019235B2 (en) | 2013-07-22 | 2015-04-28 | Chunghwa Picture Tubes, Ltd. | Method of driving touch display and touch display capable of increasing signal-to-noise ratio |
| TWI510988B (en) * | 2013-07-17 | 2015-12-01 | Chunghwa Picture Tubes Ltd | In-cell touch display panel |
-
2009
- 2009-01-21 TW TW98102330A patent/TW201028905A/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8780078B2 (en) | 2011-04-27 | 2014-07-15 | Lg Display Co., Ltd. | In-cell type touch panel |
| TWI476666B (en) * | 2011-04-27 | 2015-03-11 | Lg Display Co Ltd | In-cell type touch panel |
| TWI510988B (en) * | 2013-07-17 | 2015-12-01 | Chunghwa Picture Tubes Ltd | In-cell touch display panel |
| US9019235B2 (en) | 2013-07-22 | 2015-04-28 | Chunghwa Picture Tubes, Ltd. | Method of driving touch display and touch display capable of increasing signal-to-noise ratio |
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