TWI364696B - Touch sensor and touch screen panel - Google Patents
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- TWI364696B TWI364696B TW97110190A TW97110190A TWI364696B TW I364696 B TWI364696 B TW I364696B TW 97110190 A TW97110190 A TW 97110190A TW 97110190 A TW97110190 A TW 97110190A TW I364696 B TWI364696 B TW I364696B
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- 229910052732 germanium Inorganic materials 0.000 claims 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
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- 229910052737 gold Inorganic materials 0.000 claims 1
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- 108091006146 Channels Proteins 0.000 description 18
- 238000010586 diagram Methods 0.000 description 12
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- 239000010408 film Substances 0.000 description 7
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- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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Description
1364696 I 11364696 I 1
TW4146PA 九、發明說明: . 【發明所屬之技術領域】 ' 本發明是有關於一種觸碰感測器及其觸碰式顯示面 • 板,且特別是有關於一種利用因受壓所產生之感應通道的 觸碰感測器及其觸碰式顯示面板。 【先前技術】 觸碰式顯示面板之技術已廣泛地應用在電子裝置 ❿中,舉凡手機、筆記型電腦、音樂播放器(MP3)、個人數 位助理(PDA)、全球衛星定位系統(GPS)、超迷你電腦(UMPC) 等可攜式電子產品中,皆可窺視觸碰式顯示面板之應用領 域之一隅。 傳統上之觸碰式顯示面板之技術原理,主要分為電阻 式及電容式等感應方式。電阻式感應方式之原理為,於顯 示面板表面覆蓋分開的兩層透明的導電薄膜,例如是薄膜 電阻,當顯示面板受外部施壓時,將使得導電薄膜相互碰 ® 觸而產生電壓變化。電容式感應方式之原理為,於顯示面 板鍍上多層透明的導電薄膜,並於導膜薄膜兩側之電極施 加偏壓,以產生均勻的低壓電場,當顯示面板受到靜電感 應時,例如是手指的靜電感應,此時導電薄膜會產生電容 ' 的電位變化。藉由導電薄膜之定位方式,並根據此電壓變 - 化或電位變化以得知所觸碰之位置。 另外,美商平達(Planar Systems,Inc.)所發表之光 學式觸碰面板電路設計(Active Matrix LCD with 6 1364696TW4146PA IX. Invention Description: [Technical Field of the Invention] The present invention relates to a touch sensor and a touch display panel thereof, and more particularly to a sensor utilizing pressure due to pressure The touch sensor of the channel and its touch display panel. [Prior Art] The technology of the touch display panel has been widely used in electronic devices, such as mobile phones, notebook computers, music players (MP3), personal digital assistants (PDAs), global satellite positioning systems (GPS), Among portable electronic products such as ultra-minicomputers (UMPCs), one of the applications of the touch-sensitive display panel can be seen. The technical principle of the traditional touch panel is mainly divided into resistance type and capacitive type. The principle of the resistive sensing method is to cover two separate transparent conductive films on the surface of the display panel, such as a film resistor. When the display panel is externally pressed, the conductive films will touch each other to generate a voltage change. The principle of the capacitive sensing method is to apply a plurality of transparent conductive films on the display panel and apply a bias voltage to the electrodes on both sides of the film to produce a uniform low-voltage electric field, such as a finger when the display panel is subjected to static electricity. Electrostatic induction, at this time, the conductive film will produce a potential change of the capacitance. The position of the touched surface is known by the positioning mode of the conductive film and according to the voltage change or potential change. In addition, the optical touch panel circuit design published by Planar Systems, Inc. (Active Matrix LCD with 6 1364696)
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TW4146PATW4146PA
Integrated Optical Touch Screen)之技術文獻中,係藉 . 由設置光感測電晶體(Photo TFT)於面板之晝素陣列中, ' 使得被驅動之光感測電晶體於環境光之變化下產生電壓 • 變化,遂以此電壓變化來得知所觸碰之位置。然而,此光 學式觸碰面板對於環境光之變異性影響極鉅,亦即於低照 度之環境光下,此電路之動作靈敏度會大幅地降低,而無 法正確地判斷所觸碰的位置。 •【發明内容】 本發明是有關於一種觸碰感測器及其觸碰式顯示面 板5觸碰感測器係基於面板之電路結構’在面板受觸碰 時,改變一受驅動的電極與一對應之開關元件之主動層之 間隔,從而在主動層上感應出通道,並產生相對應之感應 信號。此外,藉由整合多個觸碰感測器於顯示面板中,以 達成觸碰式顯示面板,例如是單觸碰式或多觸碰式 (multi-touch)觸碰式顯示面板。 * 根據本發明之第一方面,提出一種觸碰感測器,包括 一第一基板、一第二基板、一感應電極及一感應開關元 件。第二基板係設置與第一基板相對。感應電極位於第一 基板上。感應開關元件位於第二基板上,包括第一開關電 " 極、一第二開關電極、一主動層、一介電層及一控制電極。 - 主動層與感應電極相對且相距一間距。主動層、第一開關 電極及第二開關電極係覆蓋於介電層上。控制電極位於第 二基板與介電層之間並與主動層相對。當第一基板或第二 7 1364696 I’ 1In the technical literature of Integrated Optical Touch Screen, the photo-sensing transistor (Photo TFT) is placed in the pixel array of the panel, so that the driven photo-sensing transistor generates a voltage under the change of ambient light. • Change, 遂 Use this voltage change to know where you are touching. However, this optical touch panel has a great influence on the variability of ambient light, that is, under low-light ambient light, the sensitivity of the circuit is greatly reduced, and the position touched cannot be correctly judged. SUMMARY OF THE INVENTION The present invention relates to a touch sensor and a touch display panel thereof. The touch sensor is based on a circuit structure of a panel. When the panel is touched, a driven electrode is changed. A spacing of the active layers of the corresponding switching elements, thereby inducing the channels on the active layer and generating corresponding sensing signals. In addition, by integrating a plurality of touch sensors in the display panel to achieve a touch display panel, such as a one-touch or multi-touch touch panel. According to a first aspect of the present invention, a touch sensor is provided comprising a first substrate, a second substrate, an inductive electrode and an inductive switching element. The second substrate is disposed opposite to the first substrate. The sensing electrode is located on the first substrate. The inductive switching element is disposed on the second substrate and includes a first switching electrode, a second switching electrode, an active layer, a dielectric layer and a control electrode. - The active layer is opposite and spaced apart from the sensing electrodes. The active layer, the first switching electrode and the second switching electrode are overlying the dielectric layer. The control electrode is located between the second substrate and the dielectric layer and opposite the active layer. When the first substrate or the second 7 1364696 I' 1
TW4146PA 基板之受壓,改變了感應電極與主動層之間距時,受驅動 . 之感應電極與控制電極在主動層上感應出與間距改變相 ' 對應的通道,使第一開關電極及第二開關電極導通。 • 根據本發明之第二方面,提出一種觸碰式顯示面板, 包括一第一基板、一第二基板、一晝素陣列及多個觸碰感 測器。第二基板設置與第一基板相對。晝素陣列設置於第 一基板及第二基板之間。各此些觸碰感測器包括一感應電 極及一感應開關元件。感應電極位於第一基板上。感應開 • 關元件位於第二基板上,感應開關元件包括第一開關電 極、一第二開關電極、一主動層、一介電層及一控制電極。 主動層與感應電極相對且相距一間距。主動層、第一開關 電極及第二開關電極係覆蓋於介電層上。控制電極位於第 二基板與介電層之間並與主動層相對。當第一基板或第二 基板之受壓,改變了感應電極與主動層之間距時,受驅動 之感應電極與控制電極在主動層上感應出與間距改變相 對應的通道,以使第一開關電極及第二開關電極導通,並 • 使受驅動之第一開關電極及第二開關電極之間產生一相 對應的感應信號。 根據本發明之第三方面,提出一種觸碰感測器,包括 一第一基板、一第二基板、一感應電極及一感應薄膜電晶 • 體。第二基板係設置與第一基板相對。感應電極位於第一 - 基板上。薄膜電晶體位於第二基板上,具有一源極、一汲 極、一主動層及一閘極。主動層與感應電極相對且相距一 間距。閘極與主動層相對,當第一基板或第二基板之受 8 1364696When the TW4146PA substrate is pressed and the distance between the sensing electrode and the active layer is changed, the sensing electrode and the control electrode induce a channel corresponding to the pitch change on the active layer, so that the first switch electrode and the second switch The electrodes are turned on. According to a second aspect of the present invention, a touch display panel includes a first substrate, a second substrate, a pixel array, and a plurality of touch sensors. The second substrate is disposed opposite to the first substrate. The halogen array is disposed between the first substrate and the second substrate. Each of the touch sensors includes an inductive electrode and an inductive switching element. The sensing electrode is located on the first substrate. The inductive opening/closing element is located on the second substrate, and the inductive switching element comprises a first switching electrode, a second switching electrode, an active layer, a dielectric layer and a control electrode. The active layer is opposite to the sensing electrodes and spaced apart from each other. The active layer, the first switching electrode and the second switching electrode are overlying the dielectric layer. The control electrode is located between the second substrate and the dielectric layer and opposite the active layer. When the first substrate or the second substrate is pressed to change the distance between the sensing electrode and the active layer, the driven sensing electrode and the control electrode induce a channel corresponding to the pitch change on the active layer to make the first switch The electrode and the second switch electrode are turned on, and • a corresponding sensing signal is generated between the driven first switch electrode and the second switch electrode. According to a third aspect of the present invention, a touch sensor is provided, comprising a first substrate, a second substrate, a sensing electrode and an inductive thin film electro-crystal body. The second substrate is disposed opposite to the first substrate. The sensing electrode is located on the first substrate. The thin film transistor is located on the second substrate and has a source, a drain, an active layer and a gate. The active layer is opposite to the sensing electrodes and spaced apart by a distance. The gate is opposite to the active layer, when the first substrate or the second substrate is received 8 1364696
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TW4146PA 壓,改變了感應電極與主動層之間距時,受驅動之感應電 . 極與閘極在主動層上感應出與間距改變相對應的通道,使 源極及沒極導通。 • 根據本發明之第四方面,提出一種觸碰式顯示面板, 包括一第一基板、一第二基板、一畫素陣列及多個觸碰感 測器。第二基板設置與第一基板相對。晝素陣列設置於第 一基板及第二基板之間。各此些觸碰感測器包括一感應電 極及一薄膜電晶體。感應電極位於第一基板上。薄膜電晶 • 體位於第二基板上,薄膜電晶體具有一源極、一汲極、一 主動層及一閘極。主動層與感應電極相對且相距一間距。 閘極與主動層相對。當第一基板或第二基板之受壓,改變 了感應電極與主動層之間距時,受驅動之感應電極與控制 電極在主動層上感應出與間距改變相對應的通道,以使源 極及汲極導通,並使受驅動之源極及汲極之間產生一相對 應的感應信號。 為讓本發明之上述内容能更明顯易懂,下文特舉較佳 ® 實施例,並配合所附圖式,作詳細說明如下: 【實施方式】 第一實施例 請參照第1A圖,其繪示依照本發明第一實施例之觸 碰感測器之結構圖。觸碰感測器110包括一第一基板120、 一第二基板130、一感應電極140及一感應開關元件150。 9 1364696TW4146PA voltage, when the distance between the sensing electrode and the active layer is changed, the driven induction current. The pole and the gate induce a channel corresponding to the change of the pitch on the active layer, so that the source and the pole are turned on. According to a fourth aspect of the present invention, a touch display panel is provided, comprising a first substrate, a second substrate, a pixel array, and a plurality of touch sensors. The second substrate is disposed opposite to the first substrate. The halogen array is disposed between the first substrate and the second substrate. Each of the touch sensors includes an inductive electrode and a thin film transistor. The sensing electrode is located on the first substrate. The thin film transistor is located on the second substrate, and the thin film transistor has a source, a drain, an active layer and a gate. The active layer is opposite to the sensing electrodes and spaced apart from each other. The gate is opposite the active layer. When the first substrate or the second substrate is pressed to change the distance between the sensing electrode and the active layer, the driven sensing electrode and the control electrode induce a channel corresponding to the pitch change on the active layer, so that the source and the source The drain is turned on and a corresponding sensing signal is generated between the driven source and the drain. In order to make the above description of the present invention more comprehensible, the following is a detailed description of the preferred embodiments and the accompanying drawings, which are described in detail below: [Embodiment] For the first embodiment, please refer to FIG. 1A, which depicts A structural view of a touch sensor according to a first embodiment of the present invention is shown. The touch sensor 110 includes a first substrate 120, a second substrate 130, a sensing electrode 140, and an inductive switching element 150. 9 1364696
TW4I46PA 第二基板130設置與第一基板120相對。感應電極140位 於第一基板120上。感應開關元件150位於第二基板130 上0The TW4I46PA second substrate 130 is disposed opposite to the first substrate 120. The sensing electrode 140 is located on the first substrate 120. The inductive switching element 150 is located on the second substrate 130.
感應開關元件150包括一第一開關電極151、一第二 開關電極152、一主動層153、一介電層154及一控制電 極155。主動層153與感應電極140相對且相距一間距d卜 第一開關電極151及第二開關電極152係覆蓋於介電層 154上。控制電極155位於第二基板13〇與介電層154之 間並與主動層154相對。此外,在此實施例之第一開關電 極151及第二開關電極152,係可設置於主動層153之兩 側並覆蓋部分之主動層153 ;在其他實作例子中,此兩開 關電極之设置關係及組成可作其他變化,例如兩開關電極 分別設置於主動層153之兩側並與之作電性連接又例如 包括金屬層及摻雜層如n+層,或增加其他的摻雜層或改以 不同材質’以增進其與主動層153的導電效果。 凊同時參照第1B圖,其繪示依照本發明第一實施例 之觸碰感測器於受按壓時感應出道通之結構圖。當第一基 板120或第二基板13〇之一受外力的按壓改變了感應電 極140與主動層丨53之間距dl,例如是由第μ圖中的間 縮減至間距d2,此時,受驅動之感應電極14〇與控 ’J電極155在主動層153上感應出與間距dl改變相對應 的”hannel) ’使第一開關電極151及第二 W2導通。 茲將上述之觸碰感測器110之電路示意圖說明如 1364696The inductive switching element 150 includes a first switching electrode 151, a second switching electrode 152, an active layer 153, a dielectric layer 154, and a control electrode 155. The active layer 153 is opposite to the sensing electrode 140 and spaced apart from each other by a distance d. The first switching electrode 151 and the second switching electrode 152 are covered on the dielectric layer 154. The control electrode 155 is located between the second substrate 13A and the dielectric layer 154 and opposite to the active layer 154. In addition, the first switch electrode 151 and the second switch electrode 152 in this embodiment may be disposed on both sides of the active layer 153 and cover a portion of the active layer 153; in other implementation examples, the two switch electrodes are disposed. The relationship and composition may be changed. For example, the two switch electrodes are respectively disposed on and electrically connected to the active layer 153, and further include, for example, a metal layer and a doped layer such as an n+ layer, or other doped layers may be added. Different materials are used to enhance the electrical conductivity of the active layer 153. Referring to Figure 1B, there is shown a block diagram of a touch sensor that senses a track when pressed in accordance with a first embodiment of the present invention. When one of the first substrate 120 or the second substrate 13 is pressed by an external force, the distance d between the sensing electrode 140 and the active layer 丨 53 is changed, for example, from the interval in the μ map to the spacing d2, at this time, driven. The sensing electrode 14A and the control 'J electrode 155 induce a "hannel" corresponding to the change of the pitch d1 on the active layer 153. 'The first switching electrode 151 and the second W2 are turned on. The above touch sensor is used. 110 circuit schematic description such as 1364696
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TW4I46PA 下。請同時參照第2Α及2Β圖,其分別繪示依照本發明第 -一實施例之觸碰感測器之電路示意圖,及依照本發明第一 • 實施例之觸碰感測器受壓時產生感應信號之電路示意 . 圖。感應電極140用以接收一第一信號而得以受驅動,第 一開關電極151係用以接收來自走線γ之一第二信號而得 以受驅動,第二開關電極152係用以接收來自走線X之一 第二彳§號而得以受驅動,控制電極(未繪示)係用以接收一 第四信號而得以受驅動。當第一開關電極151及第二開關 籲電極152導通時,會產生一相對應的感應信號si,或令感 應信號Si產生變化,例如是電壓值、電流值或是波形上 變化。因此’此感應信號Si的產生與否或其變化,係能 反映出此觸碰感測器11〇是否受壓,也就是觸碰感測器11〇 之感應電極與主動層間距是否有改變。此外,觸碰感測器 110由受壓狀態回復到未受壓之狀態所產生的改變,間距 之改變係增加,所反映出來的是感應信號Si之改變,故 • 此種情況也可得以檢測。 在一實作例子中,係可利用實作觸碰感測器110之電 路之特性’ 4 讀取電路(Readout integrated circuit, Readout-IC)(未繪示)讀取感應信號si,並依據感應信號 • Si ’例如是相對應的電流變化,以應用於實施各種與感測 • 觸碰感測器n〇是否受壓或受壓位置的相關分析之中。 有關本實施例中主動層153感應出通道以及通道使 第一開關電極151及第二開關電極152導通的原理,係可 1364696 I 4Under TW4I46PA. Please also refer to FIGS. 2 and 2, which respectively show circuit diagrams of the touch sensor according to the first embodiment of the present invention, and when the touch sensor is pressed according to the first embodiment of the present invention. The circuit of the sensing signal is shown. The sensing electrode 140 is configured to receive a first signal to be driven, the first switching electrode 151 is configured to receive a second signal from the trace γ to be driven, and the second switching electrode 152 is configured to receive the trace from the trace One of the X 彳 § is driven, and a control electrode (not shown) is used to receive a fourth signal to be driven. When the first switching electrode 151 and the second switching electrode 152 are turned on, a corresponding sensing signal si is generated, or the sensing signal Si is changed, for example, a voltage value, a current value, or a waveform change. Therefore, the occurrence or non-change of the sensing signal Si can reflect whether the touch sensor 11 is pressed, that is, whether the distance between the sensing electrode and the active layer of the touch sensor 11 is changed. In addition, the touch sensor 110 changes from the state of being pressed to the state of being uncompressed, and the change of the pitch is increased, which reflects the change of the sensing signal Si, so that the situation can also be detected. . In a practical example, the sensing signal si can be read by using a readout integrated circuit (Readout-IC) (not shown) which is implemented as a circuit of the touch sensor 110. The signal • Si ' is, for example, the corresponding current change applied to perform various correlations with the sensing • touch sensor n〇 whether it is under pressure or pressure. The principle that the active layer 153 induces the channel and the channel turns the first switch electrode 151 and the second switch electrode 152 into conduction in this embodiment is 1364696 I 4
TW4146PA 應用%效應電晶體(field-effect transistor,FET)之通 - 道產生的原理來加以解釋。然而,值得注意的是,觸碰感 測器110之感應電極140係與感應開關元件150分離並相 • 對應的具有一可變的間距,在主動層153所感應出的通道 與此間距的改變有相對應的關係。 此外’感應電極140與感應開關元件150之驅動方 式,亦可以用場效應電晶體的驅動方式來加以解釋。例 如,為了讓主動層153得以產生通道,如n通道(η 鲁channel) ’則感應電極14〇與控制電極155之間的驅動方 式’應設計令感應電極14〇與控制電極155之電位差足以 使兩者在某一間距時能在主動層153感應出通道。相似 地’若s又置觸碰感測器產生P通道(p_channe 1 )時,驅動 方面的考量亦愎如是。總之,只要能讓驅動感應電極140 與控制電極155兩者在某一間距時,能在主動層153感應 出通道’此時,再加上在第一開關電極151及第二開關電 φ極152之間作適當的驅動,例如是施予偏壓電壓或偏壓電 流’就可以從第一開關電極151或第二開關電極152得到 相對應的感應信號Si 了。 雖然觸碰感測器110之感應電極140與感應開關元件 150之作動令主動層ι53感應出通道的原理與場效應電晶 體之運作方式有所不同,但為了方便說明起見,在下面的 - 實施例及圖式中,我們將採用一與場效應電晶體相似的電 路70件符號來代表依據本發明的各個實施例中的觸碰感 測器。 12 1364696 ' ,The TW4146PA uses the principle of the pass-channel generation of a field-effect transistor (FET) to explain. However, it is worth noting that the sensing electrode 140 of the touch sensor 110 is separated from the inductive switching element 150 and has a variable pitch corresponding to the change in the channel induced by the active layer 153. There is a corresponding relationship. Further, the driving manner of the sensing electrode 140 and the inductive switching element 150 can also be explained by the driving method of the field effect transistor. For example, in order for the active layer 153 to generate a channel, such as an n-channel (n-lu channel), the driving mode between the sensing electrode 14A and the control electrode 155 should be designed such that the potential difference between the sensing electrode 14A and the control electrode 155 is sufficient. Both can induce a channel at the active layer 153 at a certain pitch. Similarly, if the s touch sensor is used to generate the P channel (p_channe 1), the driving considerations are also true. In short, as long as the driving sensing electrode 140 and the control electrode 155 can be driven at a certain interval, the channel can be induced in the active layer 153. At this time, the first switching electrode 151 and the second switching electrical φ pole 152 are added. A suitable driving signal Si can be obtained from the first switching electrode 151 or the second switching electrode 152 by appropriate driving, for example, by applying a bias voltage or a bias current. Although the operation of the sensing electrode 140 and the inductive switching element 150 of the touch sensor 110 causes the active layer ι53 to induce a channel differently than the field effect transistor, for the sake of convenience, in the following - In the embodiment and the drawings, we will use a 70-element symbol similar to a field effect transistor to represent the touch sensor in various embodiments in accordance with the present invention. 12 1364696 ' ,
TW4146PA (amorphous silicon TFT)之情況下,薄膜電晶體45〇之 • 主動層因對光有光感應現象,故薄膜電晶體450之閘極係 可為一遮光結構層(black matrix)亦可同時為一閘極訊號 結構層,以減低光感應現象。 從本實施例可知,在整合觸碰感測器與畫素陣列於一 觸碰顯示面板之中時,其布局的方式亦與觸碰感測器的驅 動之信號來源有關。以下茲舉出數個實施例以說明觸碰感 測器在受到不同驅動來源之組合之方式。相對地,吾人亦 •可以依此驅動來源來作出不同之電路布局,例如是相關走 線的布局設計,以依據本發明之實施例實施此觸碰顯示面 第三實施例 請參照第5圖,其繪示依照本發明第三實施例之觸碰 式液晶顯示面板之電路圖。與第二實施例不同的是,使源 φ極450s受驅動之第二信號,例如是由閘極驅動器所產生 之一掃描信號Gn。當源極450s及汲極450d導通時,會產 生一對應於此掃描信號Gn及電壓信號S3之感應信號Si, 沒極450d係用以輸出感應信號si。 掃描信號Gn係用以致能此晝素,更詳細地來說,掃描 信號Gn用以驅動晝素陣列之一列,例如第n列,也就是說, 接收掃描信號Gn之此些觸碰感測器110係可以設置於靠近 畫素陣列之此列之處。因此,本實施例中,由於觸碰感測 器110之源極450s係藉由接受鄰近之掃描信號心而得以 15 1364696 I · TW4146PA 受驅動,故不需額外的配線以接收較遠處之信號,而能更 加地節省電路配線,亦不會增加成本。 第四實施例 δ月參照第6圖,其繪示依照本發明第四實施例之觸碰 式液晶顯示面板之電路圖。與第三實施例不同的是,使閘 極450g受驅動之第四信號,例如是由閘極驅動器所產生 之一掃描信號G(n+i)。當源極450s及汲極450d導通時,會 產生一對應於此掃描信號G n及電壓信號s 3之感應信號S i。 本實施例中’源極450s及閘極450g係分別用以接收 由閘極駆動益所產生之掃描信號Gn及(J(n+1)而得以受驅 動;由於掃描信號G(n+n係分別用以驅動該畫素陣列之 兩列’如第η列及第n+1列,也就是說,接收掃描信號Gn 及G(n⑴之此些觸碰感測器11〇係可以設置於畫素陣列之相 鄰之兩列之間。因此,本實施例中,由於觸碰感測器11〇 之閘極450g係藉由接受鄰近之掃描信號g(„⑴而得以受驅 動,故不需額外的配線以接收較遠處之信號,而能節省電 路配線,亦不會增加成本。 第五實施例 本實施例與第四實施例不同的是,源極450s及閘極 450g係分別用以接收由閘極驅動器所產生之掃描信號G(n+1) 及Gn而得以受驅動。由於掃描信號G(n+n及Gn係分別用以 驅動晝素陣列之兩列,因此,接收掃描信號G(n+n& Gn之此 1364696In the case of TW4146PA (amorphous silicon TFT), the active layer of the thin film transistor 45 is light-induced, so the gate of the thin film transistor 450 can be a black matrix or both. A gate signal structure layer to reduce the phenomenon of light sensing. It can be seen from the present embodiment that when the touch sensor and the pixel array are integrated in a touch display panel, the layout is also related to the signal source of the touch sensor. Several embodiments are set forth below to illustrate the manner in which the touch sensor is subjected to a combination of different drive sources. In contrast, the same can be used to make different circuit layouts, for example, the layout design of the relevant traces, to implement the touch display surface according to the embodiment of the present invention. Referring to FIG. 5, A circuit diagram of a touch-type liquid crystal display panel in accordance with a third embodiment of the present invention is shown. Different from the second embodiment, the second signal that causes the source φ pole 450s to be driven is, for example, one of the scanning signals Gn generated by the gate driver. When the source 450s and the drain 450d are turned on, a sensing signal Si corresponding to the scanning signal Gn and the voltage signal S3 is generated, and the electrodeless 450d is used to output the sensing signal si. The scan signal Gn is used to enable the pixel. In more detail, the scan signal Gn is used to drive one column of the pixel array, for example, the nth column, that is, the touch sensors that receive the scan signal Gn. The 110 series can be placed close to this column of the pixel array. Therefore, in this embodiment, since the source 450s of the touch sensor 110 is driven by the proximity of the scanning signal core, 15 1364696 I · TW4146PA is driven, so no additional wiring is needed to receive signals at a remote location. , and can save more circuit wiring, and will not increase the cost. Fourth Embodiment Δ Month Referring to Figure 6, there is shown a circuit diagram of a touch type liquid crystal display panel in accordance with a fourth embodiment of the present invention. Different from the third embodiment, the fourth signal for driving the gate 450g is, for example, one of the scanning signals G(n+i) generated by the gate driver. When the source 450s and the drain 450d are turned on, an induced signal S i corresponding to the scan signal G n and the voltage signal s 3 is generated. In the present embodiment, the source 450s and the gate 450g are respectively used to receive the scanning signals Gn and (J(n+1) generated by the gates and are driven; since the scanning signal G(n+n is They are respectively used to drive the two columns 'the nth column and the n+1th column of the pixel array, that is, the touch sensors 11 that receive the scan signals Gn and G(n(1) can be set on the picture Between the adjacent two columns of the array, therefore, in this embodiment, since the gate 450g of the touch sensor 11 is driven by receiving the adjacent scanning signal g ((1), it is not required The additional wiring is used to receive signals at a remote location, which can save circuit wiring and increase the cost. The fifth embodiment is different from the fourth embodiment in that the source 450s and the gate 450g are respectively used. Receiving the scanning signals G(n+1) and Gn generated by the gate driver is driven. Since the scanning signals G (n+n and Gn are respectively used to drive the two columns of the pixel array, the scanning signals are received G(n+n& Gn this 1364696
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TW4146PA 如第8圖所示’薄膜電晶體86〇具有一第一端861、 一第二端862及一控制端863。第一端861用以接收第六 k號而得以受驅動,例如是一外部之電壓信號Vdd。第二 • 端862耦接至源極450s。控制端863用以接收第五信號而 得以受驅動,例如是由閘極驅動器所產生之一掃描訊號 Gii。此知描訊號Gn係用以驅動晝素陣列之一列,例如是此 畫素160,也就是說,鄰近此晝素1之觸碰感測器11 〇 之源極450s係藉由接受驅動此畫素160之掃描訊號Gn而 •得以受驅動。進一步來說,當輔助開元件86〇導通時,且 觸碰感測器11〇受壓產生通道使得源極45〇s及汲極45〇d 導通時,受驅動之源極450s與汲極450d會產生一相對應 的感應k號Si,汲極450d係用以輸出該感應信號以。因 此,藉由此感應信號Si的產生與否,能得知此觸碰感測 器110是否受壓。 由於觸碰感測器110係經由薄膜電晶體860與驅動電 路隔離,故只有在薄膜電晶體860導通時,觸碰感測器11〇 之源極450s才會受驅動,也就是說,掃描信號匕係週期 性地導通薄膜電晶體860以使得源極45〇s受驅動,此時 藉由此感應彳s號S i的產生與否來得知觸碰感測器11 〇是 否受麼。因此’當薄膜電晶體860沒有被導通時,觸碰疋感 -測器110即使受壓亦不會產生感應信號Si,因此,能夠達 到省電的功效。雖然如此,但因一般使用者以手指^是觸 控筆,碰觸觸碰式顯示面板之時間往往齡 上),故此只要上述沒有被導通的時間較觸碰的時間TW4146PA As shown in FIG. 8, the thin film transistor 86 has a first end 861, a second end 862, and a control end 863. The first end 861 is driven to receive the sixth k number, such as an external voltage signal Vdd. The second terminal 862 is coupled to the source 450s. The control terminal 863 is configured to receive the fifth signal and is driven, for example, by one of the scan signals Gii generated by the gate driver. The known signal Gn is used to drive a column of the pixel array, for example, the pixel 160, that is, the source 450s of the touch sensor 11 adjacent to the pixel 1 is driven to receive the picture. The scan signal Gn of the prime 160 is driven. Further, when the auxiliary opening element 86 is turned on, and the touch sensor 11 is pressed to generate a channel such that the source 45 〇s and the drain 45 〇d are turned on, the driven source 450s and the drain 450d A corresponding induced k-number Si is generated, and the drain 450d is used to output the sensing signal. Therefore, whether or not the touch sensor 110 is pressed can be known by the presence or absence of the sensing signal Si. Since the touch sensor 110 is isolated from the driving circuit via the thin film transistor 860, the source 450s of the touch sensor 11 is driven only when the thin film transistor 860 is turned on, that is, the scanning signal The lanthanide system periodically turns on the thin film transistor 860 to cause the source 45 〇s to be driven. At this time, it is known whether the touch sensor 11 受 is received by the presence or absence of the sensing 彳s number S i . Therefore, when the thin film transistor 860 is not turned on, the touch sensor 110 does not generate the sensing signal Si even if it is pressed, so that the power saving effect can be achieved. However, since the general user uses the finger ^ to be the touch pen, the time of touching the touch display panel is often older, so as long as the above time is not turned on, the touch time is longer.
丁 W4146PA 短的話,就不會對碰觸感測效果產生影響。 . 本發明上述揭露之多個實施例中,沒極亦可不 ·=由電壓信號S3所驅動,而僅且作為輸出感應信號以之 %點,並以畫素陣列外部之讀取電路讀取此感應信號^。 此外,第一至第五實施例中,第二信號及第四信號除 了 ^述實_所揭露之組合外,亦可是其他之組合,例如 第一L说可為閘極驅動器起始信號Stv、負問極電壓信號 VGL及任-掃純號&之其中之―,而第四信號為其中之 另一,如此亦能達成驅動觸碰感測器11〇之功效。相仿地, 第六實施例中,驅動薄膜電晶體450及860之第四、第五 及第六信號,亦可為閘極驅動器起始信號stv、負閘極電 壓信號VGL及任-掃描信mGn之其中任二之組合。上述係 以閘極驅動器起始信號Stv、負閘極電壓信號VGL及任一 掃描信號Gn為例做說明,然亦不於此限,亦可以是其他能 達到驅動觸碰感測器之功效之信號。 • 再者,雖然上述的觸碰感測器與晝素陣列整合的數個 實施例中,係以一晝素與一觸碰感測器為例。然而,在其 他實施例中,觸碰感測器與畫素可具有不同之組合排列 式,如以一定或不同的分佈比例,設置於畫素陣列中;又 如,部分的觸碰感測器可設置或延伸至畫素陣列之顯示區 以外,以作其他應用。舉例來說,藉由配置多個觸碰感測 器於畫素陣列之間,並偵測此些觸碰感測器受觸碰所感應 之多個感應信號,由此,同一時間不同手指或物體在面板 上的觸碰位置皆可得以定位,故可達成多觸碰式顯示面 1364696 * *If the W4146PA is short, it will not affect the touch sensing effect. In the above embodiments of the present disclosure, the pole is not driven by the voltage signal S3, but only as an output sensing signal, and is read by the reading circuit outside the pixel array. Induction signal ^. In addition, in the first to fifth embodiments, the second signal and the fourth signal may be other combinations, such as the first L, which may be the gate driver start signal Stv, in addition to the combination disclosed. The negative polarity voltage signal VGL and any of the sweep-purity numbers & and the fourth signal is the other one, so that the effect of driving the touch sensor 11 can be achieved. Similarly, in the sixth embodiment, the fourth, fifth, and sixth signals of the driving thin film transistors 450 and 860 may also be the gate driver start signal stv, the negative gate voltage signal VGL, and the any-scanning signal mGn. A combination of any two of them. The above description uses the gate driver start signal Stv, the negative gate voltage signal VGL, and any of the scan signals Gn as an example. However, it is not limited thereto, and other effects can be achieved by driving the touch sensor. signal. • Furthermore, although several embodiments of the touch sensor described above are integrated with the pixel array, a single pixel and a touch sensor are exemplified. However, in other embodiments, the touch sensor and the pixels may have different combinations, such as being arranged in a pixel array at a certain or different distribution ratio; for example, a part of the touch sensor Can be set or extended beyond the display area of the pixel array for other applications. For example, by arranging a plurality of touch sensors between the pixel arrays, and detecting a plurality of sensing signals that are touched by the touch sensors, thereby different fingers or at the same time The touch position of the object on the panel can be positioned, so that a multi-touch display surface 1364696 * * can be achieved.
TW4146PA 板。此外,藉由偵測感應信號及實際應用的需要,亦可將 之設計為單觸碰式顯示面板。 • 此外,上述相關實施例以液晶面板之整合方式為例, . 但其他顯示面板之技術,只要能在上下基板之間建構觸碰 感測器即可實施本發明所揭露之觸碰顯示面板。此外,上 述觸碰顯示面板實施例之感應開關元件及輔助開關元件 係以薄膜電晶體為例,然亦不限於此,在其他面板的技術 中,只要能實施感應電極令開關元件產生通道即可用以實 籲施如上述實施例中的觸碰顯示面板。 本發明上述實施例所揭露之觸碰感測器,係設置於第 一面板及第二面板之間,因此,觸碰感測器可於顯示面板 之製造過程中同時設置完成,故能達成整合於面板製程之 一觸碰式顯示面板。此外,本發明上述實施例所揭露之觸 碰式液晶顯示面板中,觸碰感測器係可藉由閘極驅動器, 如接受鄰近之掃描信號而得以受驅動,故不需額外的配線 以接收較遠處之信號,而能節省電路配線,亦不會增加成 * 本。還有,在一些實施例中,藉由輔助開關元件選擇性地 導通,使得受壓之觸碰感測器選擇性地產生感應信號,因 此,能夠達到省電的功效。此外,由於本發明上述實施例 係利用因受壓所產生的感應通道,而得以感測觸碰之發生 或位置,故此並沒有光學式觸碰面板對於環境光之變異性 . 影響極鉅之問題,並且也沒有電容式觸控面板只能適合能 導電之物(如手指)在面板上觸碰始能感測的限制。 綜上所述,雖然本發明已以較佳實施例揭露如上,然 20 1364696 1 桊TW4146PA board. In addition, it can also be designed as a one-touch display panel by detecting the sensing signal and the needs of the actual application. In addition, the above-mentioned related embodiments take the integration mode of the liquid crystal panel as an example. However, other display panel technologies can implement the touch display panel disclosed in the present invention as long as the touch sensor can be constructed between the upper and lower substrates. In addition, the inductive switching element and the auxiliary switching element of the touch display panel embodiment are exemplified by a thin film transistor, but the invention is not limited thereto. In other panel technologies, the sensing electrode can be used to make the switching element generate a channel. The touch display panel as in the above embodiment is implemented. The touch sensor disclosed in the above embodiments of the present invention is disposed between the first panel and the second panel. Therefore, the touch sensor can be simultaneously set in the manufacturing process of the display panel, so that integration can be achieved. One of the touch panel display panels in the panel process. In addition, in the touch-type liquid crystal display panel disclosed in the above embodiments of the present invention, the touch sensor can be driven by the gate driver, such as receiving the adjacent scan signal, so that no additional wiring is needed for receiving. The signal at a far distance can save circuit wiring and will not increase it. Also, in some embodiments, the auxiliary switching element is selectively turned on so that the pressurized touch sensor selectively generates an inductive signal, thereby enabling power saving. In addition, since the above embodiment of the present invention utilizes the sensing channel generated by the pressure to sense the occurrence or position of the touch, there is no variability of the optical touch panel to the ambient light. And there is no capacitive touch panel that can only be used to limit the ability of conductive objects (such as fingers) to touch on the panel. In summary, although the present invention has been disclosed above in the preferred embodiment, 20 1364696 1 桊
TW4146PA 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。TW4146PA is not intended to limit the invention. A person skilled in the art can make various changes and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
21 1364696 » 1 TW4146PA 【圖式簡單說明】 第1A圖繪示依照本發明第一實施例之觸碰感測器之 結構圖。 第1B圖繪示依照本發明第一實施例之觸碰感測器於 受壓時感應出道通之結構圖。 第2A圖繪示依照本發明第一實施例之觸碰感測器之 電路示意圖。21 1364696 » 1 TW4146PA [Simple Description of the Drawing] Fig. 1A is a view showing the configuration of a touch sensor according to the first embodiment of the present invention. FIG. 1B is a structural diagram showing the touch-sensing of the touch sensor according to the first embodiment of the present invention. Fig. 2A is a circuit diagram showing a touch sensor in accordance with a first embodiment of the present invention.
第2B圖緣示依照本發明第一實施例之觸碰感測器受 壓時產生感應信號之電路示意圖。 第3A圖繪示乃第2A圖之觸碰感測器應用於觸碰式液 晶顯示面板之示意圖。 第3B圖'纟會不依照第从圖中剖面線AA’之觸碰式液 晶顯示面板之剖面圖。 一第4圖繪不依照本發明第二實施例之觸碰式液晶顯 示面板之電路示意圖。 第5圖繪不依照本發明第三實施例之觸碰式液晶顯 不面板之電路示意圖。 _第6圖繪7^依照本發明第四實施例之觸碰式液晶顯 不面板之電路示意圖。 第7圖繪不依照本發明第六實施例之觸碰式液晶顯 不面板之電路示意圖。 干而8圖繪不依照本發明第七實施例之觸碰式液晶顯 不面板之電路示意圖。 22 1364696Fig. 2B is a circuit diagram showing the generation of an induced signal when the touch sensor is pressed according to the first embodiment of the present invention. Fig. 3A is a schematic view showing the touch sensor of Fig. 2A applied to a touch type liquid crystal display panel. Fig. 3B' is a cross-sectional view of the touch-type liquid crystal display panel which does not follow the section line AA' in the figure. Fig. 4 is a circuit diagram showing a touch liquid crystal display panel not according to the second embodiment of the present invention. Fig. 5 is a circuit diagram showing a touch panel type liquid crystal display panel not according to the third embodiment of the present invention. Fig. 6 is a circuit diagram showing a touch panel type liquid crystal display panel according to a fourth embodiment of the present invention. Fig. 7 is a circuit diagram showing a touch panel type liquid crystal display panel which is not in accordance with the sixth embodiment of the present invention. FIG. 8 is a circuit diagram showing a touch panel type liquid crystal display panel not according to the seventh embodiment of the present invention. 22 1364696
TW4146PA 【主要元件符號說明】 110 :觸碰感測器 120 :第一基板 130 :第二基板 140 :感應電極 150 :感應開關元件 151 :第一開關電極 152 :第二開關電極 153 :主動層 154 :介電層 155 :控制電極 160 :晝素 300 :液晶顯示面板 450、860 :薄膜電晶體 450s :源極 450d :汲極 450g :閘極 861 :第一端 862 :第二端 863 :控制端 dl、d2 :間距TW4146PA [Main component symbol description] 110: touch sensor 120: first substrate 130: second substrate 140: sensing electrode 150: inductive switching element 151: first switching electrode 152: second switching electrode 153: active layer 154 Dielectric layer 155: control electrode 160: halogen 300: liquid crystal display panel 450, 860: thin film transistor 450s: source 450d: drain 450g: gate 861: first end 862: second end 863: control end Dl, d2: spacing
Gn、G(n + 1):掃描信號 S i :感應信號 VGL :負閘極電壓信號 23 1364696 \ *Gn, G(n + 1): scan signal S i : sense signal VGL : negative gate voltage signal 23 1364696 \ *
TW4146PATW4146PA
Vcom :共同電壓 Vdd、Vr、S3 :電壓信號 • Stv :閘極驅動器起始信號 X、Y :走線Vcom: Common voltage Vdd, Vr, S3: Voltage signal • Stv: Gate driver start signal X, Y: Trace
24twenty four
Claims (1)
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| US12/265,766 US20090115741A1 (en) | 2007-11-06 | 2008-11-06 | Touch sensor and touch screen panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US98566007P | 2007-11-06 | 2007-11-06 |
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| TWI364696B true TWI364696B (en) | 2012-05-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI493875B (en) * | 2012-07-25 | 2015-07-21 | Egalax Empia Technology Inc | Driving signal generating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI386834B (en) * | 2009-06-04 | 2013-02-21 | Taiwan Electrets Electronics Co Ltd | 3-d non-bias electrets multi-touch device |
| CN102033347B (en) * | 2009-09-30 | 2012-12-19 | 群康科技(深圳)有限公司 | In-cell touch liquid crystal display (LCD) |
| TWI501125B (en) * | 2012-11-22 | 2015-09-21 | Innocom Tech Shenzhen Co Ltd | Touch display device |
| CN103885223B (en) * | 2012-12-21 | 2017-04-19 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN106328716A (en) | 2016-08-26 | 2017-01-11 | 京东方科技集团股份有限公司 | Thin film transistor, method thereby for detecting pressure, and touch device |
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| CN100511651C (en) * | 2006-01-27 | 2009-07-08 | 胜华科技股份有限公司 | Thin film transistor array substrate and manufacturing method thereof |
| CN100410749C (en) * | 2006-09-14 | 2008-08-13 | 友达光电股份有限公司 | Light sensing touch liquid crystal display |
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| TWI493875B (en) * | 2012-07-25 | 2015-07-21 | Egalax Empia Technology Inc | Driving signal generating system |
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