201124770 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種液晶面板，特別係關於一種具有 按壓檢測和圖像顯示功能的液晶面板。 【先前技術】BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal panel, and more particularly to a liquid crystal panel having a function of press detection and image display. [Prior Art]
當前’隨著半導體技術和製造工藝的發展，具有高 品質、低功耗、無輻射和體積小等優越性能的薄膜電晶 體液晶顯示器（TFT-LCD)已經逐漸成為市場的主流。At present, with the development of semiconductor technology and manufacturing processes, thin film liquid crystal display (TFT-LCD) with superior performance such as high quality, low power consumption, no radiation and small volume has gradually become the mainstream in the market.
典型地，液晶面板包括：一陣列基板（array substrate)、一彩色濾光片基板（c〇1〇r filteF substrate)和分佈在陣列基板與彩色濾光片基板之間 的液晶分子層。更加具體地，在陣列基板上具有由資料 ，與相應掃描線的交又位置所定義的多個晝素，以及由 夕個電子元件構成用來驅動這些晝素的畫素驅動電 路 般地，彩色濾光片基板是一透明的玻璃基板，在 其上濺鍍有諸如IT〇或IZ〇材料形成的透明導電膜層。 此透明導電膜層與公共電極電源電性連接（作為公共電 極）’與加在陣列基板上的相應晝素電極一起產生預定 電壓，以便控制液晶的扭轉。 、，對於觸控式液晶面板來說，現有技術通常在彩色 光片基板上設計—光阻間隔物（ph〇tQ SpaCer),此Typically, the liquid crystal panel includes an array substrate, a color filter substrate, and a liquid crystal molecule layer distributed between the array substrate and the color filter substrate. More specifically, on the array substrate, there are a plurality of elements defined by the data, the intersection with the corresponding scanning line, and a pixel driving circuit composed of the electronic components for driving the pixels, the color The filter substrate is a transparent glass substrate on which a transparent conductive film layer formed of a material such as IT〇 or IZ〇 is sputtered. The transparent conductive film layer is electrically connected to the common electrode power source (as a common electrode)' together with a corresponding halogen electrode applied to the array substrate to generate a predetermined voltage to control the twist of the liquid crystal. For touch-sensitive liquid crystal panels, the prior art is usually designed on a color light substrate - a photoresist spacer (ph〇tQ SpaCer).
Lit:朝著？列基板方向突起。並且，在整個濾光 土 σ、'阻間隔物的表面上均濺鍍一透明導電膜層，彳 201124770 當使用者㈣觸摸屏時，光阻間隔物與陣列 基板上的sensQr電性連接，通過感應器上的電位鮮 就可以偵測到液晶面板的顯示單元被按 ： =觸摸屏時，光阻間隔物與陣列基板上的感應器t :而，在上述液晶面板中，濾光片基板和光阻間隔 物的表面上均蘭有連續的透明導電臈層，這樣才能確 保顯不早70被按愿時感應器獲得的電>1電位愈遽光片 基板上的電壓電位相等，也就是說，光阻間隔物的側壁 上必須鑛有ΙΤ0導電層，這勢必會帶來製造工簸的穩定 性和複雜性問題。此外，濾'光片基板與公共電極祕連 接，，系統只能使用直流電源，從而增加了系統功耗。 廷是因為’-旦載入交流電源，當按壓液晶面板時，通 過光阻間隔物將感應器電性連接至濾光片基板的IT0 層，感應器上得到的電壓將會很不穩定。 【發明内容】 針對現有技術中液晶面板在使用時所存在的上述 缺陷’本發明提供了 —種新型液晶面板，並且還提供了 一種針對此液晶面板的觸控偵測方法。 依據本發明的一實施例，提供了一種液晶面板，包 括：複數條掃描線、複數條資料線、複數條感應線、複 數個顯示單元和複數個按壓單元。複數條資料線與這些 掃插線垂直父錯設置。複數條感應線與這些資料線平行 201124770 T置。其中’每個顯示單元電性連接一掃描線和與掃描 線相對應的資料線。此外，每 _ 、 母個按壓早兀包括一第一按 =電：薄膜電晶體、—第二按壓下電極和-按壓 開關。母個薄膜電晶體包括一 閘極與—掃描線 二、：源極和-沒極， 連接源極與一感應線電性連接， =汲=第—按壓下電㈣性連接。第二㈣下電極 ，設置於同一平面上且電性隔離。按壓 一备壓下電極與第二按壓下電極的上 方’當按壓此開關時’按壓開關電性連接第一按壓下電 :與第二按壓下電極。其中，第二按愿下電極可以電性 、接存儲電容下電極或與此按壓單元相 描線。 种 較佳地，按壓開關為表面具有導電 隔物。並且，導電材質層位於光阻間隔物的頂面。諸如: = ^ΙΖ()的透明材料。此外’導電材質層與顯示單元 _ 的晝素上電極電性隔離。 車乂佳地，§第二按壓下電極電性連接至盥按壓單元 相鄰的下-掃描線時，按壓開關後，第一按壓下 低電位電壓。 較佳地田苐一按壓下電極電性連接至存儲電容下 叫按壓開關後，第一按壓下電極電性== 單疋的存儲電容下電極。 依據本發明的又—實施例，提供了—種液晶面板， 匕括：複數條掃描線、複數條資料線和複數個顯示單 201124770 這些掃描線垂直交錯設置。複數個 :電極、一顯示下電極、-侦測電 極電性連接一 4電位ΓΓ導電層。按壓下電 ，考電位源。顯示下電極與按壓下電極設 雷極：沾::面上且電性隔離。偵測電路用於偵測顯示下 的電位。薄膜電晶體包括-閘極、-源極和一汲Lit: Towards? The column substrate protrudes. Moreover, a transparent conductive film layer is sputtered on the entire surface of the filter σ and the spacer, and when the user (4) touches the screen, the photoresist spacer is electrically connected to the sensQr on the array substrate, and the sensing is performed. The potential on the device can detect that the display unit of the liquid crystal panel is pressed: = when the touch screen is used, the photoresist spacer and the sensor on the array substrate t: In the above liquid crystal panel, the filter substrate and the photoresist interval On the surface of the object, there is a continuous layer of transparent conductive enamel, so as to ensure that the electric potential obtained by the inductor is less than 70. The potential of the substrate is equal, that is, the light is on the substrate. A conductive layer of ΙΤ0 must be deposited on the sidewall of the barrier spacer, which is bound to cause problems in the stability and complexity of the manufacturing process. In addition, the filter 'light substrate is connected to the common electrode, and the system can only use DC power, which increases system power consumption. Because the LED is loaded with AC power, when the LCD panel is pressed, the sensor is electrically connected to the IT0 layer of the filter substrate through the photoresist spacer, and the voltage obtained on the inductor will be unstable. SUMMARY OF THE INVENTION The present invention provides a novel liquid crystal panel, and also provides a touch detection method for the liquid crystal panel. According to an embodiment of the invention, a liquid crystal panel is provided, comprising: a plurality of scanning lines, a plurality of data lines, a plurality of sensing lines, a plurality of display units, and a plurality of pressing units. A plurality of data lines are set in a vertical parent error with these sweep lines. A plurality of sensing lines are parallel to these data lines. Wherein each display unit is electrically connected to a scan line and a data line corresponding to the scan line. In addition, each _ and mother presses include a first press = electric film: a second pressing lower electrode and a - pressing switch. The mother thin film transistor comprises a gate and a scan line. Two: a source and a - pole, the connection source is electrically connected to a sense line, =汲=the first-press-down power-off (four) connection. The second (four) lower electrodes are disposed on the same plane and electrically isolated. Pressing the upper side of the backup electrode and the second pressing lower electrode 'When the switch is pressed', the push switch is electrically connected to the first press to be powered down: the lower electrode is pressed with the second. Wherein, the second pressing electrode can be electrically connected to the lower electrode of the storage capacitor or drawn to the pressing unit. Preferably, the push switch has a conductive spacer on the surface. Moreover, the conductive material layer is located on the top surface of the photoresist spacer. Transparent materials such as: = ^ΙΖ(). In addition, the conductive material layer is electrically isolated from the halogen upper electrode of the display unit _. Preferably, when the second pressing lower electrode is electrically connected to the lower-scanning line adjacent to the pressing unit, the first low voltage is pressed after the switch is pressed. Preferably, after pressing the lower electrode electrically connected to the storage capacitor and pressing the push switch, the first pressing the lower electrode is electrically==the single storage capacitor lower electrode. According to still another embodiment of the present invention, a liquid crystal panel is provided, including: a plurality of scan lines, a plurality of data lines, and a plurality of display sheets. 201124770 These scan lines are vertically staggered. A plurality of electrodes: an electrode, a display electrode, and a detection electrode are electrically connected to a 4-potential conductive layer. Press the power off and test the potential source. Display the lower electrode and press the lower electrode. Thunder: Dip:: Surface and electrically isolated. The detection circuit is used to detect the potential under display. Thin film transistors include - gate, - source and a stack
^接閘極與—掃描線電性連接，汲極與顯示下電極電性 接。開關用於切換源極電性連接偵測電路或一資料 :雷？Γ示訊號寫入顯示下電極時，開關電性連接薄 膜電曰日體的源極與此資料線。按壓導電層，設置於㈣ ，極…、貞不下電極上方’當按虔導電層被按壓時，按 堅導電層電性連接按壓下電極與顯示下電極。 、較佳地’㈣導電層是由導電材質製成的。並且， 按屋導電層位於光阻間隔物的頂面，例如， 的透明材料。 5較佳地，按壓導電層與顯示單元的畫素上電極電性 隔離田按壓導電層被按壓時’顯示下電極為參考電位。 車乂佳地，偵測電路包括一電壓比較器。其中，電壓 匕較器的第一輸入端通過開關電性連接至顯示下電 極，第二輸入端電性連接至一參考電壓。此外，偵測電 路更包括一電阻設置於第一輸入端與開關之間。 較佳地，設置一電阻於偵測電路與開關之間。 依據本發明的又一實施例，提供了一種液晶面板的 觸控偵測方法，包括： 201124770 開啟掃描線，打開薄膜電晶體的閘極，使薄膜電晶 體的源極和汲極處於電性通路狀態。接著，切換開關， 將晝素電極通過開關電性連接到電阻器。將流經畫素電 .^電流信號傳it至電阻器。然後，將電流信號轉換為 電〒L號並輸入到谓測電路。比較輸入的電壓與閾值 電壓，判斷液晶面板的晝素是否被按壓。其中，當顯示 下電極的電訊號是源於參考電位源時，偵測電路送出一 觸控訊號表示按壓導電層已按壓顯示單元。 修依據本發明的再—實施例，提供了—種液晶面板的 觸控伯測方法，包括.開啟掃描線，打開薄膜電晶體的 閘極使薄膜電晶體的源極和沒極處於電性通路狀態。 接者’切換開目’將晝素電極通過開關電性連接到该測 電路，比較輸入電壓與閾值電壓之間的大小。其中，當 顯示下電極的電位訊號是源於參考電位源時，偵測電ς 送出-觸控訊號表示按壓導電層已按壓顯示單元。 ’【實施方式】^ The gate is electrically connected to the scan line, and the drain is electrically connected to the display lower electrode. The switch is used to switch the source electrical connection detection circuit or a data: mine? When the signal is written to the lower electrode, the switch is electrically connected to the source of the thin film and the data line. The conductive layer is pressed and placed at (4), the pole ..., the upper electrode is not pressed. When the conductive layer is pressed, the lower electrode is electrically connected to the lower electrode and the lower electrode is displayed. Preferably, the (four) conductive layer is made of a conductive material. And, the conductive layer of the house is located on the top surface of the photoresist spacer, for example, a transparent material. Preferably, the pressing of the conductive layer and the pixel upper electrode of the display unit are electrically isolated and the pressing conductive layer is pressed to indicate that the lower electrode is a reference potential. In a good way, the detection circuit includes a voltage comparator. The first input end of the voltage comparator is electrically connected to the display lower electrode through a switch, and the second input end is electrically connected to a reference voltage. In addition, the detecting circuit further includes a resistor disposed between the first input terminal and the switch. Preferably, a resistor is disposed between the detecting circuit and the switch. According to still another embodiment of the present invention, a touch detection method for a liquid crystal panel is provided, including: 201124770 Turning on a scan line, opening a gate of a thin film transistor, so that a source and a drain of the thin film transistor are in an electrical path status. Next, the switch is switched to electrically connect the halogen electrode to the resistor through the switch. The current signal flowing through the pixel is passed to the resistor. Then, the current signal is converted to the electric 〒 L number and input to the pre-measure circuit. The input voltage and the threshold voltage are compared to determine whether the halogen of the liquid crystal panel is pressed. Wherein, when the signal indicating the lower electrode is derived from the reference potential source, the detecting circuit sends a touch signal indicating that the pressing conductive layer has pressed the display unit. According to a further embodiment of the present invention, a touch test method for a liquid crystal panel is provided, comprising: turning on a scan line, opening a gate of the thin film transistor such that a source and a immersion of the thin film transistor are in an electrical path status. The receiver 'switches the eye' to electrically connect the pixel electrode to the measuring circuit through a switch, and compares the magnitude between the input voltage and the threshold voltage. Wherein, when the potential signal of the display lower electrode is derived from the reference potential source, the detection power is sent out - the touch signal indicates that the pressing conductive layer has pressed the display unit. ‘Executive】
既接收回應資訊並執行各種不同的操作 又增強體驗感。在此交互過程中， 丨操作，既方便快捷， 液晶面板除了通過控 201124770 制掃描線和資料線，在多個顯示單元中顯示圖像外，還 應當對液晶面板是否被按壓進行檢測和判斷。 第1圖係繪示依據本發明的一個方面的液晶面板 的結構示意圖。 液晶面板10包括偵測線100、掃描線1〇2、資料線 104、掃描線106、讀出TFT1〇8、顯示tftu〇、顯示電 極112Ί14* 116、按壓導電層118#口光阻間隔物12〇。 類似地，薄膜電晶體110的閘極與掃描線ι〇2電性 鲁連接，薄膜電晶體11G的源極與資料線1{)4電性連接， 並且薄膜電晶體11〇的汲極與顯示電極116電性連接。 此外’顯示電極116還電性連接到與掃描線1〇2相鄰的 下一條掃描線，即，掃描線1〇6。f要指出的是，薄膜 電晶體110用於顯示圖像，故在此省略描述。 薄膜電晶體108的閘極與掃描線1〇2電性連接，薄 膜電晶體108的源極與偵測線1〇〇電性連接，並且薄膜 鲁電晶體108的汲極與顯示電極112電性連接。由前述可 知，讀出TFT108和顯示TFT110都設置於陣列基板，液 晶分子層位於陣列基板以及與陣列基板相對的破璃基 板之間。光阻間隔物12〇位於玻璃基板上，其底面與玻 璃基板相接觸，並且其頂面朝陣列基板方向突起。按壓 導電層118位於光阻間隔物12〇的頂面上。當顯示單元 被按壓時，顯示電極112和114通過按壓導電層1丨8兀 電性連接。在本實施例中，按壓導電層118是做為顯示 電極112和114間的導電通路之用，故不必如習知般因 201124770 需與公共電極電性連接而必 形成透明導電膜層。在她… ％物的側壁上 與掃描線106相連接，因此，^於^於^示電極114 , 田位於顯不電極112 l·的 ==低電壓電位時，表明顯示單元二的 二::广技術人員應當理解，薄臈電晶請和 Π0的源極和純通常是可互換的，例如 膜電晶體108的汲極與崎!。。電性連接:且= 膜電晶體1G8的源極與顯示電極112電性連接 城 的普通技術人員還應當理解，顯示電極u ^ 於:性連接至與掃描線1〇2相鄰 不= 以電性連接至諸如顯示單元的存儲電容下電極； :位：。也就是說，當顯示電極112的感測器上得到盘 按:電極114相同的電位時’就能夠判斷顯示單元已被 第2A圖係繪示第！圖中的液晶面板未被按壓時的 不思圖’第2B圖係繪示第j圖中的液晶面板被按 圖。在第2A圖中，僅僅在玻璃基板的 ^表面上濺鑛一圖案化的透明導電膜層200,並且透 :導電膜層咖與公共電極電性連接，以接收公共電壓 % ’光阻間隔物120形成在玻璃基板上，在其頂面上 具有按壓導電層118。需要強調的是，此時ιτ〇導電層 ^需要形成於光阻間隔物12()的頂面上，無需形成^ 則壁上，這對形成在光阻間隔物12〇的側壁上的⑽ 材料的爬坡能力不作任何要求，從而極大地簡化了製造 201124770 工藝。當顯示單元未被按壓時，暴貝示電極ιΐ2與_ 極m處於電性隔離狀態，位於顯示電極ιΐ2上的感 器偵測到的電壓不會發生任何變化。 〜、 當顯示單s被按壓時，如第2B圖所示，光阻間隔 物120向陣列基板方向運動，直至按壓導電層118將顯 不電極112與顯示電極114電性連接在—起。由於第 2B圖中的顯示電極114電性連接至掃描線iQ6，當開啟 掃描線10 2以打開讀* τ F τ! 〇 8和顯示τ F T i i 〇時，掃描 線106處於低電壓電位。因此，與顯示電極ιΐ4電性連 接的顯示電極112也處於低電屢電位，這樣—來，通過 即日，監，顯示電極i i 2上的感測器電壓就可以確知顯 不單π疋否已被按麗。本領域的普通技術人員應當理 解·，當顯示單元被按壓時，光阻間隔物120頂面上的按 壓導電層118電性連接顯示電極112和114。因此，只 要提供一參考電壓電源電性連接顯示電極114，就可以、 通過顯示電極H2上的感測器來偵測顯示單元是否被 按壓。出於此種考慮，顯示電極114並不只局限於電性 連接至下一條掃描線1〇6，它還可以電性連接至其他的 參考電壓源，例如，公共電極。 /田採用圖1申的液晶面板10時，光阻間隔物12〇 相當於—開闕，通過其頂面上的按壓導電層118電性連 接或者電性隔離顯示電極112和114。從這個意義上 說、’用來電性連接或者電性隔離顯示電極112和114 的並不只局限於光阻間隔物120。因顯示電極114與掃 201124770 連接時，通過顯示電極112上的 =㈣位）就可以確知顯示單元已被按壓。相比Μ 有技術’不僅需要在玻璃基板的整個表面上_一 ΙΤ0 m層，還要求在光阻間隔物的側壁和頂面上也濺 鍍ΙΤ0導電層，製造工藝無疑要複雜得多。It receives both response information and performs a variety of different operations to enhance the experience. In this interaction process, the operation is convenient and quick. In addition to displaying the images in multiple display units by controlling the 201124770 system scan lines and data lines, the LCD panel should also detect and judge whether the liquid crystal panel is pressed. Fig. 1 is a schematic view showing the structure of a liquid crystal panel according to an aspect of the present invention. The liquid crystal panel 10 includes a detecting line 100, a scanning line 1〇2, a data line 104, a scanning line 106, a readout TFT1〇8, a display tftu〇, a display electrode 112Ί14*116, and a pressing conductive layer 118#-port photoresist spacer 12 Hey. Similarly, the gate of the thin film transistor 110 is electrically connected to the scanning line ι 2 , the source of the thin film transistor 11G is electrically connected to the data line 1{) 4 , and the drain and display of the thin film transistor 11 〇 The electrode 116 is electrically connected. Further, the display electrode 116 is also electrically connected to the next scanning line adjacent to the scanning line 1〇2, that is, the scanning line 1〇6. It is to be noted that the thin film transistor 110 is used for displaying an image, and thus the description is omitted here. The gate of the thin film transistor 108 is electrically connected to the scan line 1〇2, the source of the thin film transistor 108 is electrically connected to the detection line 1〇〇, and the drain of the thin film transistor 108 and the display electrode 112 are electrically connected. connection. As described above, the readout TFT 108 and the display TFT 110 are both disposed on the array substrate, and the liquid crystal molecular layer is located between the array substrate and the glass substrate opposite to the array substrate. The photoresist spacer 12 is located on the glass substrate, the bottom surface of which is in contact with the glass substrate, and the top surface thereof protrudes toward the array substrate. The pressing conductive layer 118 is located on the top surface of the photoresist spacer 12A. When the display unit is pressed, the display electrodes 112 and 114 are electrically connected by pressing the conductive layer 1丨8兀. In the present embodiment, the conductive layer 118 is used as a conductive path between the display electrodes 112 and 114. Therefore, it is not necessary to form a transparent conductive film layer because the electrical connection to the common electrode is required in 201124770. The scan line 106 is connected to the sidewall of the ... object, so that the electrode 114 is located at the == low voltage potential of the display electrode 112 l·, indicating that the display unit 2 is two: It will be understood by those skilled in the art that the source and purity of the thin germanium and the germanium are generally interchangeable, such as the bucking and battering of the membrane transistor 108. . Electrical connection: and = the source of the membrane transistor 1G8 and the display electrode 112 electrically connected to the city, it should also be understood that the display electrode u ^ is: sexually connected to the scan line 1 〇 2 adjacent = no electricity Connected to a storage capacitor lower electrode such as a display unit; : bit:. That is, when the same potential of the electrode 114 is obtained on the sensor of the display electrode 112, it can be judged that the display unit has been shown by the second drawing system! The liquid crystal panel in the figure is not pressed. FIG. 2B shows the liquid crystal panel in the jth diagram. In FIG. 2A, a patterned transparent conductive film layer 200 is sputtered only on the surface of the glass substrate, and the conductive film layer is electrically connected to the common electrode to receive the common voltage % 'resistance spacer 120 is formed on the glass substrate and has a pressing conductive layer 118 on its top surface. It should be emphasized that at this time, the conductive layer needs to be formed on the top surface of the photoresist spacer 12 (), and it is not necessary to form a wall, and the pair of (10) materials formed on the sidewall of the photoresist spacer 12 〇 The climbing ability does not require any requirements, which greatly simplifies the manufacturing of the 201124770 process. When the display unit is not pressed, the electrodes ιΐ2 and _ pole m are electrically isolated, and the voltage detected by the sensor located on the display electrode ι2 does not change. When the display sheet s is pressed, as shown in FIG. 2B, the photoresist spacer 120 is moved toward the array substrate until the conductive layer 118 is pressed to electrically connect the display electrode 112 and the display electrode 114. Since the display electrode 114 in Fig. 2B is electrically connected to the scanning line iQ6, when the scanning line 10 2 is turned on to turn on the reading * τ F τ ! 〇 8 and the display τ F T i i 〇, the scanning line 106 is at a low voltage potential. Therefore, the display electrode 112 electrically connected to the display electrode ι4 is also at a low electric potential, so that, by the same day, the sensor voltage on the display electrode ii 2 can be sure that the π is not pressed. Korea. One of ordinary skill in the art will appreciate that the push conductive layer 118 on the top surface of the photoresist spacer 120 is electrically coupled to the display electrodes 112 and 114 when the display unit is pressed. Therefore, as long as a reference voltage source is electrically connected to the display electrode 114, the sensor on the display electrode H2 can be used to detect whether the display unit is pressed. For this reason, the display electrode 114 is not limited to being electrically connected to the next scanning line 1〇6, and it can be electrically connected to other reference voltage sources, for example, a common electrode. When the liquid crystal panel 10 of Fig. 1 is used, the photoresist spacer 12 is equivalent to an opening, and the display electrodes 112 and 114 are electrically connected or electrically isolated by the pressing conductive layer 118 on the top surface thereof. In this sense, 'used to electrically connect or electrically isolate display electrodes 112 and 114 is not limited to photoresist spacer 120. Since the display electrode 114 is connected to the scan 201124770, it is confirmed by the = (four) bits on the display electrode 112 that the display unit has been pressed. Compared to the Μ technology, it is not only required to have a layer of _0 m on the entire surface of the glass substrate, but also a conductive layer of ΙΤ0 on the sidewalls and the top surface of the photoresist spacer. The manufacturing process is undoubtedly much more complicated.
由於顯示電極114電性連接掃描線1G6，顯示電極 112上的感測器偵測到的電壓不再與公共電壓％密切 相關，因此系統的公共電極電源也不必只局限於直流驅 動方式例如’匕可以採用交流驅動方式，以降低功率 消耗。此夕卜與讀出TFT108連接的顯示電極劃分為顯 不電極112和114’也顯著提高了面板中的晝素開口率。 以上描述了依據本發明的液晶面板的一個實施 例。在液晶面板10中，顯示TFT110、資料線1〇4、顯 示電極116、掃描線102和106用於控制顯示單元來顯 示不同灰階的圖像，而讀出TFT108、偵測線1〇〇、顯示 電極112和114、按壓導電層118、光阻間隔物12〇以 及掃描線102和106用於偵測顯示單元是否被按壓。從 這裏可以看出，顯示TFT和讀出TFT分別用於完成晝素 顯示和按壓偵測功能，它們在結構上基本是獨立驅=和 控制的。因而，在液晶面板1〇中需要額外增加多條偵 測線和多個讀出TFT，以偵測畫素是否被按壓和顯示不 同灰階的圖像。 根據本發明的液晶面板的又一個實施例，第3圖給 示液晶面板30的結構示意圖。其申，液晶面板3〇包^ 201124770 資料線/彳貞測線300、掃描線302、與掃描線302相鄰的 下一掃描線304、讀出/顯示TFT306、顯示電極308和 310、按壓導電層312和光阻間隔物3丨4。不同於液晶 面板10,在液晶面板30中資料線和偵測線採取複用設 計’讀出TFT和顯示TFT也設計為複用結構。當液晶面 板的開關（圖中未示出）處於開啟或關閉狀態時，薄膜 電晶體的源極（或汲極）電性連接到偵測電路或資料線。 按壓導電層312設置在顯示電極3〇8和31〇的上 • 方，顯示電極3〇8與顯示電極310 —般處於電性隔離狀 態。當光阻間隔物314被按壓時，按壓導電層312的一 部分與顯示電極308相接觸，按壓導電層312的另一部 分與顯不電極310相接觸，因此顯示電極3〇8和31〇 通過按壓導電層312從電性隔離狀態轉化成電性連接 狀怨。優選地，顯示電極31〇與掃描線3〇4電性連接， 則晝素被按壓時，顯示電極308上的電壓處於低電位狀 鲁態，通過偵測顯示電極308上的電壓狀態，就可以得知 晝素已被按壓。其中，按壓導電層312是由導電材質製 成的，例如，IZO或ITO透明材料，並且位於光阻間隔 物314的頂面。 第4圖繪示在第3圖所示的液晶面板3〇中用於實 現按壓檢測和圖像顯示的電路原理示意圖。該電路結構 包括掃描線400、薄膜電晶體402、開關4〇4、資料線 406和偵測電路408。薄膜電晶體4〇2的閘極電性連接 掃描線4GG，薄膜電晶體術的祕（歧極）電性連 13 201124770 接開關404的一端，薄膜電晶體402的汲極（或源極） 電性連接至晝素電極（圖中以補償電容Cst和液晶電容 C1 c表示）。Since the display electrode 114 is electrically connected to the scan line 1G6, the voltage detected by the sensor on the display electrode 112 is no longer closely related to the common voltage %, so the common electrode power supply of the system is not necessarily limited to the DC drive mode, for example, '匕AC drive can be used to reduce power consumption. Further, the division of the display electrodes connected to the readout TFT 108 into the display electrodes 112 and 114' also significantly increases the aperture ratio in the panel. One embodiment of the liquid crystal panel according to the present invention has been described above. In the liquid crystal panel 10, the display TFT 110, the data line 1〇4, the display electrode 116, and the scan lines 102 and 106 are used to control the display unit to display images of different gray levels, and the readout TFT 108, the detection line 1〇〇, Display electrodes 112 and 114, a pressing conductive layer 118, a photoresist spacer 12A, and scan lines 102 and 106 are used to detect whether the display unit is pressed. It can be seen from this that the display TFT and the readout TFT are respectively used to perform the pixel display and the press detection functions, which are basically independent of the drive and control. Therefore, it is necessary to additionally add a plurality of detection lines and a plurality of readout TFTs in the liquid crystal panel 1 to detect whether or not the pixels are pressed and display images of different gray scales. According to still another embodiment of the liquid crystal panel of the present invention, FIG. 3 is a schematic view showing the structure of the liquid crystal panel 30. The liquid crystal panel 3 includes a 201124770 data line/test line 300, a scan line 302, a next scan line 304 adjacent to the scan line 302, a read/display TFT 306, display electrodes 308 and 310, and a pressing conductive layer. 312 and photoresist spacer 3丨4. Unlike the liquid crystal panel 10, the data lines and the detection lines are multiplexed in the liquid crystal panel 30. The readout TFT and the display TFT are also designed as a multiplexing structure. When the switch (not shown) of the liquid crystal panel is turned on or off, the source (or drain) of the thin film transistor is electrically connected to the detecting circuit or the data line. The pressing conductive layer 312 is disposed on the upper side of the display electrodes 3?8 and 31?, and the display electrodes 3?8 are electrically isolated from the display electrode 310 as a whole. When the photoresist spacer 314 is pressed, a portion of the pressing conductive layer 312 is in contact with the display electrode 308, and another portion of the pressing conductive layer 312 is in contact with the display electrode 310, so that the display electrodes 3〇8 and 31〇 are electrically conductive by pressing Layer 312 is converted from an electrically isolated state to an electrical connection. Preferably, the display electrode 31A is electrically connected to the scan line 3〇4, and when the pixel is pressed, the voltage on the display electrode 308 is in a low potential state, and by detecting the voltage state on the display electrode 308, I learned that the sputum has been pressed. Wherein, the pressing conductive layer 312 is made of a conductive material, for example, IZO or ITO transparent material, and is located on the top surface of the photoresist spacer 314. Fig. 4 is a schematic view showing the circuit principle for realizing press detection and image display in the liquid crystal panel 3A shown in Fig. 3. The circuit structure includes a scan line 400, a thin film transistor 402, a switch 4〇4, a data line 406, and a detection circuit 408. The gate of the thin film transistor 4〇2 is electrically connected to the scanning line 4GG, and the secret of the thin film transistor is connected to the end of the switch 404, and the drain (or source) of the thin film transistor 402 is electrically connected. It is connected to the halogen electrode (indicated by the compensation capacitor Cst and the liquid crystal capacitor C1 c).
當切換開關404時’薄膜電晶體402的源極（或没 極）電性連接資料線406 ’打開薄膜電晶體402的閘極， 利用資料線406將相應資料送入晝素電極以顯示圖 像。當切換開關4〇4時，薄膜電晶體4〇2的源極（或汲 和）電f生連接彳貞測電路4 〇 8，將來自晝素電極的電信號 傳送至彳貞測電路’以確定晝素是否被按壓。 ^在本發明的一實施例中，偵測流經晝素電極的電消 信號，通過電流/電壓轉換電路來生成電壓，以進行比 ::在本發明的又一實施例中，偵測晝素電極上的電屋 #號’並與參考電壓進行比較，以判斷晝素是否被按壓。 在下文十，依據第4圖中的電路結構來具體描述圖 備測方法。其中，帛5圖繪示基於電流信號進 一實施例的方法流程框圖，第6圖緣示 ^電純號進行按壓檢測的第二實施例的方法流程 柩園0 :驟500中’開啟掃描線4〇〇，打開薄膜電晶體4 狀：了膜電晶體4〇2的源極和沒極處於電性通 ::。接者，執行步驟5。2，切軸“ 開關電性連接到電阻器。 " 電晶體的源極連接，另-端與電阻器連接並= 彻之别。在步驟…t，將流經晝素, 201124770 極的電流信號傳送至電阻器。然後，執行步驟5〇6,將 電流信號轉換為電壓信號，並輸入到偵測電路408。在 步驟508中，比較輸入的電壓與閾值電壓，判斷液晶面 板的晝素是否被按壓。優選地，偵測電壓4〇8可以包括 電壓比較器，用於比較輸入電壓和閾值電壓。最後， 在步驟51G中’如果晝素碟已被按壓，則偵測電路408 發出一觸控信號，並進行後續操作。 類似地，基於電壓信號的偵測方法也可以描述如 下步驟600中，開啟掃描線4〇〇，打開薄膜電晶體4〇2 的閘極，使薄膜電晶M 4〇2的源極和沒極處於電性通路 狀態。接著，執行步驟602，切換開關404，將畫素電 極通過開關電性連接到偵測電路彻。這時，開關 的一端與薄膜電晶體402的源極連接，另一端與偵測電 路408連接在步驟中，將畫素電極上的電壓信號 傳，至偵測電路。執行步驟6〇6，比較輸入電壓與閾值 電壓之間的大小。優選地，制電壓408可以包括-電 壓比較器，用於電壓比較。最後，在步驟608中，如果 畫素確已被按壓，則偵測電路408發出一觸控信號，並 進 <亍後續操作。 才木用本發明的液晶面板30，通過單個的TFT來完 成按壓檢測和圖像顯示功能，大大地降低了液晶面板中 項出TFT的個數，同時也顯著地提高了畫素的開口率。 it匕夕卜/夜晶面板的公共電極電源不僅可以採用直流驅動 方式’還可以採用交流驅動方式，以降低系統功耗。 15 201124770 —雖然本發明已以實施方式揭露如上，然其並非用以 F疋本發明’任何熟習此技藝者，在不脫離本發明之精 神和範_，當可作各種之更動與_，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】 個方面的液晶面板 第1圖係繪示依據本發明的_ 的結構示意圖；When the switch 404 is switched, the source (or the pole of the thin film transistor 402 is electrically connected to the data line 406' to open the gate of the thin film transistor 402, and the corresponding data is sent to the pixel electrode by the data line 406 to display an image. . When the switch 4〇4 is switched, the source (or the sum) of the thin film transistor 4〇2 is connected to the detection circuit 4〇8, and the electrical signal from the pixel electrode is transmitted to the detection circuit. Determine if the halogen is pressed. In an embodiment of the invention, the electrical cancellation signal flowing through the halogen electrode is detected, and a voltage is generated by the current/voltage conversion circuit to perform a ratio: in another embodiment of the present invention, the detection is performed. The electric house ##' on the prime electrode is compared with the reference voltage to determine whether the halogen is pressed. In the following ten, the map preparation method will be specifically described in accordance with the circuit configuration in FIG.帛5 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图4〇〇, open the thin film transistor 4: the source and the pole of the membrane transistor 4〇2 are in electrical communication::. Then, go to step 5. 2. Cut the axis "The switch is electrically connected to the resistor. " The source of the transistor is connected, and the other end is connected to the resistor and = exactly. In the step...t, it will flow through昼素, 201124770 The pole current signal is sent to the resistor. Then, step 5〇6 is performed, the current signal is converted into a voltage signal, and input to the detecting circuit 408. In step 508, the input voltage and the threshold voltage are compared, It is determined whether the pixel of the liquid crystal panel is pressed. Preferably, the detection voltage 4〇8 may include a voltage comparator for comparing the input voltage and the threshold voltage. Finally, in step 51G, 'if the halogen disk has been pressed, then The detection circuit 408 emits a touch signal and performs subsequent operations. Similarly, the voltage signal based detection method can also be described in the following step 600, turning on the scan line 4〇〇, opening the gate of the thin film transistor 4〇2 The source and the immersion of the thin film transistor M 4 〇 2 are in an electrical path state. Then, in step 602, the switch 404 is switched to electrically connect the pixel electrode to the detection circuit through the switch. At this time, the switch The terminal is connected to the source of the thin film transistor 402, and the other end is connected to the detecting circuit 408. The voltage signal on the pixel electrode is transmitted to the detecting circuit. Step 6〇6 is performed to compare the input voltage with the threshold voltage. Preferably, the voltage 408 can include a voltage comparator for voltage comparison. Finally, in step 608, if the pixel has indeed been pressed, the detection circuit 408 issues a touch signal and proceeds. <亍Next operation. With the liquid crystal panel 30 of the present invention, the press detection and image display functions are completed by a single TFT, which greatly reduces the number of TFTs in the liquid crystal panel, and also significantly improves the number of TFTs. The aperture ratio of the pixel. The common electrode power supply of the 匕 卜 / night crystal panel can be used not only in the DC drive mode but also in the AC drive mode to reduce the system power consumption. 15 201124770 - although the invention has been disclosed in the above embodiments However, it is not intended to be used in the art of the present invention, and the present invention may be made without departing from the spirit and scope of the present invention. The scope of protection is subject to the definition of the patent application scope. [Simplified description of the drawings] Aspects of the liquid crystal panel Figure 1 is a schematic view showing the structure of _ according to the present invention;
面板未被按壓時的 圖中的液晶面板被 第2A圖係繪示第1圖中的液晶 狀態示意圖，和第2B圖係繪示第j 按壓時的狀態示意圖； 弟；3圖係繪不依 的結構示意圖； 第4圖係繪示在第3圖所示的液曰品j丄 夜日日面板中用於實現 知:壓檢測和圖像顯示的電路原理示意圖. 第5圖係繪示使用第4圖中的偵測電路進行按壓檢 測的第一實施例的流程示意圖；以及 第6圖係繪示使用第4圖中的偵測雷4 』晃路進行按壓檢 測的第二實施例的流程示意圖。 t si 201124770 110 顯示TFT 112 顯示電極 114 顯示電極 116 顯示電極 118 按壓導電層 120 光阻間隔物 312 按壓導電層 314 光阻間隔物 400 掃描線 402 薄膜電晶體 404 開關 406 資料線 408 偵測電路 【主要元件符號說明】 10:液晶面板 1 〇〇:偵測線 102:掃描線 104:資料線 掃描線 108 Z 讀出 TFT 2〇〇 :透明導電膜層The liquid crystal panel in the figure when the panel is not pressed is shown in FIG. 2A as a schematic diagram of the liquid crystal state in FIG. 1 , and FIG. 2B is a schematic diagram showing the state in the jth pressing; Schematic diagram of the structure; Fig. 4 is a schematic diagram showing the circuit principle for realizing the knowledge of pressure detection and image display in the liquid 丄 丄 day and day panel shown in Fig. 3. Fig. 5 shows the use of the 4 is a schematic flow chart of the first embodiment in which the detecting circuit performs the pressing detection; and FIG. 6 is a schematic flow chart showing the second embodiment of the pressing detection using the detecting lightning 4 in the fourth figure. . t si 201124770 110 display TFT 112 display electrode 114 display electrode 116 display electrode 118 press conductive layer 120 photoresist spacer 312 press conductive layer 314 photoresist spacer 400 scan line 402 thin film transistor 404 switch 406 data line 408 detection circuit Explanation of main component symbols] 10: Liquid crystal panel 1 〇〇: Detection line 102: Scanning line 104: Data line scanning line 108 Z Readout TFT 2〇〇: Transparent conductive film layer
30 :液晶面板 30〇:資料線/债測線 302 :掃描線 304 :掃描線 306 :讀出/顯示丁卩丁 :顯示電極 31 〇 ·'顯示電極 步驟500開啟掃描線以打開11；7的閘極 =⑽切換開_電性連接顯示下電極與電阻器 來自顯示下電極的電流信號傳送至電阻器 二驟5°6轉換電流㈣為電壓錢並輸人到_電路 》驟508比較輸入的電麗與閾值㈣判斷顯 否被按壓 步驟510如被㈣’則發出一觸控信號 步驟600開啟掃描線以打開TFT的閘極 ^驟_切換開關以電性連接顯示下電極與偵測電路 V驟604將顯示下電極上的電塵信號傳送至侦測電路 201124770 步驟606比較輸入的電壓與閾值電壓判斷顯示單元是 否被按壓 步驟608如被按壓，則發出一觸控信號30: liquid crystal panel 30: data line / debt line 302: scan line 304: scan line 306: read / display Ding Ding: display electrode 31 〇 · 'display electrode step 500 turn on the scan line to open the gate of 11; Pole = (10) switch open _ electrical connection shows the lower electrode and the resistor from the display of the lower electrode current signal is sent to the resistor 2 step 5 ° 6 conversion current (four) for the voltage money and input to the _ circuit" step 508 compare input power The threshold value (4) is judged whether or not the step 510 is pressed. If the step 510 is issued, a touch signal is sent to the step 600 to turn on the scan line to turn on the gate of the TFT. The switch is electrically connected to display the lower electrode and the detection circuit. The 604 transmits the electric dust signal on the lower electrode to the detecting circuit 201124770. Step 606 compares the input voltage with the threshold voltage to determine whether the display unit is pressed. If the step 608 is pressed, a touch signal is generated.