TWI637299B - Touch display device - Google Patents
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- TWI637299B TWI637299B TW106104002A TW106104002A TWI637299B TW I637299 B TWI637299 B TW I637299B TW 106104002 A TW106104002 A TW 106104002A TW 106104002 A TW106104002 A TW 106104002A TW I637299 B TWI637299 B TW I637299B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Push-Button Switches (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
一種觸控顯示裝置，其包括顯示面板及蓋設於該顯示面板上的透明的蓋板，所述觸控顯示裝置定義有顯示區及圍繞顯示區的邊框區，該觸控顯示裝置設置有觸控感測電極，該觸控感測電極對應該顯示區設置，該觸控顯示裝置設置有至少一個壓力感測元件；每一個壓力感測元件包括層疊設置的兩個電極層及設置在所述兩個電極層之間的一壓電材料層；所述兩個電極層中的一層與觸控感測電極為同層設置。所述觸控顯示裝置具有良好的觸控感測和壓力感測功能；且壓力感測元件位於觸控感測電極的周邊，而不是與觸控感測電極上下層疊設置，故可有效降低觸控顯示裝置的厚度。 A touch display device includes a display panel and a transparent cover plate disposed on the display panel. The touch display device defines a display area and a border area surrounding the display area. The touch display device is provided with a touch panel. Control touch electrode, the touch sensing electrode is arranged corresponding to the display area, the touch display device is provided with at least one pressure sensing element; each pressure sensing element includes two electrode layers arranged in a stack and disposed on the A layer of piezoelectric material between the two electrode layers; one of the two electrode layers is disposed on the same layer as the touch sensing electrode. The touch display device has good touch sensing and pressure sensing functions; and the pressure sensing elements are located around the touch sensing electrodes, rather than being stacked on top of the touch sensing electrodes, so the touch can be effectively reduced Control the thickness of the display device.
Description
本發明涉及顯示裝置，尤其涉及一種具有觸控感測壓力功能的顯示裝置。 The present invention relates to a display device, and more particularly to a display device with a touch sensing pressure function.
習知的觸控顯示裝置通常設置有觸控電極以進行觸控感測。該觸控顯示裝置既是呈現圖像的輸出裝置，也是接收使用者的觸摸指令的輸入裝置。當手指觸摸顯示裝置的特定區域時，觸摸位置被感測到並實現特定的功能操作。然而，習知的觸控顯示裝置通常沒有感測觸摸時按壓力度大小的功能。 Conventional touch display devices are usually provided with touch electrodes for touch sensing. The touch display device is both an output device that presents an image and an input device that receives a user's touch instruction. When a finger touches a specific area of the display device, the touched position is sensed and a specific function operation is realized. However, the conventional touch display device generally does not have a function of sensing the magnitude of the pressing force when touching.
鑒於以上內容，有必要提供一種可感測觸摸時按壓力度大小的顯示裝置。 In view of the above, it is necessary to provide a display device capable of sensing the magnitude of the pressing force during a touch.
一種觸控顯示裝置，其包括顯示面板及蓋設於該顯示面板上的透明的蓋板，所述觸控顯示裝置定義有顯示區及圍繞顯示區的邊框區，該觸控顯示裝置設置有觸控感測電極，該觸控感測電極對應該顯示區設置，該觸控顯示裝置設置有至少一個壓力感測元件；每一個壓力感測元件包括層疊設置的兩個電極層及設置在所述兩個電極層之間的一壓電材料層；所述兩個電極層中的一層與觸控感測電極為同層設置。 A touch display device includes a display panel and a transparent cover plate disposed on the display panel. The touch display device defines a display area and a border area surrounding the display area. The touch display device is provided with a touch panel. Control touch electrode, the touch sensing electrode is arranged corresponding to the display area, the touch display device is provided with at least one pressure sensing element; each pressure sensing element includes two electrode layers arranged in a stack and disposed on the A layer of piezoelectric material between the two electrode layers; one of the two electrode layers is disposed on the same layer as the touch sensing electrode.
所述顯示裝置具有良好的觸控感測和壓力感測功能；且壓力感測元件位於觸控感測電極的周邊，而不是與觸控感測電極上下層疊設置，故可起到降低顯示裝置的厚度。 The display device has good touch-sensing and pressure-sensing functions; and the pressure-sensing element is located around the touch-sensing electrode instead of being stacked on top of the touch-sensing electrode, so it can reduce the display thickness of.
100，200‧‧‧觸控顯示裝置 100, 200‧‧‧ touch display device
10‧‧‧顯示面板 10‧‧‧Display Panel
30‧‧‧蓋板 30‧‧‧ Cover
110‧‧‧顯示區 110‧‧‧display area
130‧‧‧邊框區 130‧‧‧Border area
40‧‧‧觸控感測電極 40‧‧‧ touch sensing electrode
50‧‧‧壓力感測元件 50‧‧‧Pressure sensing element
41‧‧‧子電極塊 41‧‧‧Sub electrode block
51‧‧‧第一電極層 51‧‧‧first electrode layer
53‧‧‧壓電材料層 53‧‧‧Piezoelectric material layer
55‧‧‧第二電極層 55‧‧‧Second electrode layer
60‧‧‧觸摸控制電路 60‧‧‧touch control circuit
70‧‧‧壓力感測電路 70‧‧‧Pressure sensing circuit
120‧‧‧走線 120‧‧‧ route
43‧‧‧第一觸控電極 43‧‧‧first touch electrode
45‧‧‧第二觸控電極 45‧‧‧Second touch electrode
80‧‧‧光學透明膠 80‧‧‧Optical Transparent Adhesive
140‧‧‧絕緣層 140‧‧‧ Insulation
圖1是本發明第一實施方式的觸控顯示裝置的俯視平面示意圖。 FIG. 1 is a schematic top plan view of a touch display device according to a first embodiment of the present invention.
圖2是圖1的觸控顯示裝置的剖面示意圖。 FIG. 2 is a schematic cross-sectional view of the touch display device of FIG. 1.
圖3是本發明第二實施方式的觸控顯示裝置的俯視平面示意圖。 3 is a schematic top plan view of a touch display device according to a second embodiment of the present invention.
圖4是圖3的觸控顯示裝置的剖面示意圖。 FIG. 4 is a schematic cross-sectional view of the touch display device of FIG. 3.
請一併參考圖1及圖2，圖1是本發明第一實施方式的觸控顯示裝置100的示意圖，圖2是圖1的觸控顯示裝置100的剖面示意圖。 Please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a schematic diagram of a touch display device 100 according to a first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the touch display device 100 of FIG. 1.
該觸控顯示裝置100為液晶顯示裝置或有機電致發光顯示裝置。該觸控顯示裝置100包括顯示面板10及蓋設於顯示面板10上的蓋板30。該蓋板30為透明的。該蓋板30的材質可為透明的玻璃或透明的塑膠。該觸控顯示裝置100定義有顯示區110(圖1中虛線框內部)及圍繞該顯示區110的邊框區130(圖1中虛線框外部)。該蓋板30對應該顯示區110形成有觸摸面。當該觸控顯示裝置100為液晶顯示裝置，該顯示面板10為常規的液晶顯示面板，其包括層疊設置的對向基板、液晶層及薄膜電晶體陣列基板。當該觸控顯示裝置100為有機電致發光顯示裝置，該顯示面板10為常規的有機電致發光顯示面板，其包括層疊設置的薄膜電晶體陣列基板以及有機發光層。 The touch display device 100 is a liquid crystal display device or an organic electroluminescence display device. The touch display device 100 includes a display panel 10 and a cover plate 30 disposed on the display panel 10. The cover plate 30 is transparent. The material of the cover plate 30 can be transparent glass or transparent plastic. The touch display device 100 defines a display area 110 (inside a dotted frame in FIG. 1) and a frame area 130 (outside the dotted frame in FIG. 1) surrounding the display area 110. The cover plate 30 is formed with a touch surface corresponding to the display area 110. When the touch display device 100 is a liquid crystal display device, the display panel 10 is a conventional liquid crystal display panel, which includes a counter substrate, a liquid crystal layer, and a thin-film transistor array substrate that are stacked and arranged. When the touch display device 100 is an organic electroluminescence display device, the display panel 10 is a conventional organic electroluminescence display panel, which includes a thin-film transistor array substrate and an organic light-emitting layer disposed in a stacked manner.
該蓋板30與該顯示面板10之間設置有觸控感測電極40和至少一個壓力感測元件50，使得該觸控顯示裝置100具有觸控感測和壓力感測的功 能。該觸控感測電極40對應該顯示區110設置，該至少一個壓力感測元件50設置在該觸控感測電極40的周邊。 A touch sensing electrode 40 and at least one pressure sensing element 50 are disposed between the cover 30 and the display panel 10, so that the touch display device 100 has functions of touch sensing and pressure sensing. can. The touch sensing electrode 40 is disposed corresponding to the display area 110, and the at least one pressure sensing element 50 is disposed around the touch sensing electrode 40.
本實施例中，該觸控顯示裝置100具有四個角落，該壓力感測元件50的數量為四個，每個壓力感測元件50對應該觸控顯示裝置100的一個角落設置。該四個壓力感測元件50對應邊框區130設置。可以理解的，在其他的實施方式中，壓力感測元件50也可對應該顯示區110設置。 In this embodiment, the touch display device 100 has four corners, and the number of the pressure sensing elements 50 is four. Each pressure sensing element 50 is disposed corresponding to one corner of the touch display device 100. The four pressure sensing elements 50 are disposed corresponding to the frame region 130. It can be understood that, in other embodiments, the pressure sensing element 50 may also be disposed corresponding to the display area 110.
本實施例中，該觸控感測電極40為單層且透明的，其包括間隔排布的複數個子電極塊41。該複數個子電極塊41的材質可為本領域常規使用的各種透明導電材料，如氧化銦錫(ITO)。 In this embodiment, the touch sensing electrode 40 is single-layered and transparent, and includes a plurality of sub-electrode blocks 41 arranged at intervals. The material of the plurality of sub-electrode blocks 41 may be various transparent conductive materials conventionally used in the art, such as indium tin oxide (ITO).
每一個壓力感測元件50包括層疊設置的第一電極層51、壓電材料層53及第二電極層55，其中該第一電極層51相對更靠近該蓋板30。該壓電材料層53的材質可為聚合物壓電材料，如聚偏氟乙烯(PVDF)。該壓電材料層53的厚度小於等於20微米。該第一電極層51與所述複數個子電極塊41為同層設置，即該第一電極層51與所述複數個子電極塊41採用同一導電材料層經同一圖案化製程同時形成。 Each pressure-sensing element 50 includes a first electrode layer 51, a piezoelectric material layer 53, and a second electrode layer 55 that are stacked, wherein the first electrode layer 51 is relatively closer to the cover plate 30. The material of the piezoelectric material layer 53 may be a polymer piezoelectric material, such as polyvinylidene fluoride (PVDF). The thickness of the piezoelectric material layer 53 is 20 μm or less. The first electrode layer 51 and the plurality of sub-electrode blocks 41 are disposed in the same layer, that is, the first electrode layer 51 and the plurality of sub-electrode blocks 41 are formed at the same time through the same patterning process using the same conductive material layer.
該觸控顯示裝置100的邊框區130設置有觸摸控制電路60。所述觸控感測電極40藉由多條走線120電性連接該觸摸控制電路60。具體可為每一個子電極塊41藉由一條走線120電性連接該觸摸控制電路60，或者是兩個或兩個以上相鄰的子電極塊41藉由一條走線120電性連接該觸摸控制電路60。該當手指觸摸該蓋板30的觸摸面時，該觸摸處對應的子電極塊41的電信號發生改變，該電信號的改變藉由走線120傳輸到觸摸控制電路60，從而使觸摸位置得以偵測到。 A touch control circuit 60 is disposed in the frame area 130 of the touch display device 100. The touch sensing electrode 40 is electrically connected to the touch control circuit 60 through a plurality of traces 120. Specifically, each sub-electrode block 41 is electrically connected to the touch control circuit 60 through a trace 120, or two or more adjacent sub-electrode blocks 41 are electrically connected to the touch through a trace 120. Control circuit 60. When a finger touches the touch surface of the cover plate 30, the electrical signal of the sub-electrode block 41 corresponding to the touch location changes. The change of the electrical signal is transmitted to the touch control circuit 60 through the wiring 120, so that the touch position can be detected. Measured.
該觸控顯示裝置100的邊框區130還設置有壓力感測電路70。所述每一個該壓力感測元件50藉由走線120電性連接該壓力感測電路70。具體可 為第一電極層51和第二電極層55分別藉由一條走線120電性連接該壓力感測電路70。該當手指按壓該蓋板30的觸摸面時，壓力感測元件50的壓電材料層53承受到手指觸摸壓力的分解力，使第一電極層51與第二電極層55的之間的電勢差發生改變，該電勢差的改變藉由走線120傳輸到壓力感測電路70，換算得到每一個壓力感測元件50所受到的壓力，再綜合四個壓力感測元件50的壓力換算得到觸摸處所受的實際的觸摸壓力。所述換算的具體方法可為本領域常規的換算方法，此處不再贅述。 The frame region 130 of the touch display device 100 is further provided with a pressure sensing circuit 70. Each of the pressure sensing elements 50 is electrically connected to the pressure sensing circuit 70 through a trace 120. Specifically The first electrode layer 51 and the second electrode layer 55 are electrically connected to the pressure sensing circuit 70 through a trace 120, respectively. When the finger presses the touch surface of the cover plate 30, the piezoelectric material layer 53 of the pressure sensing element 50 receives the decomposition force of the finger touch pressure, so that the potential difference between the first electrode layer 51 and the second electrode layer 55 occurs. The change of the potential difference is transmitted to the pressure sensing circuit 70 through the wiring 120, and the pressure received by each pressure sensing element 50 is converted, and then the pressure of the four pressure sensing elements 50 is converted to obtain the touched position. Actual touch pressure. The specific conversion method may be a conventional conversion method in the art, and is not repeated here.
如圖2所示，所述觸控感測電極40直接形成在該蓋板30靠近該顯示面板10的表面，第一電極層51也直接形成在蓋板30朝向該顯示面板10的表面。可以理解的，該蓋板30與該顯示面板10之間還形成有光學透明膠80以將該蓋板30與該顯示面板10粘結於一體。該觸控感測電極40和壓力感測元件50被所述光學透明膠80包裹。 As shown in FIG. 2, the touch sensing electrodes 40 are directly formed on the surface of the cover plate 30 near the display panel 10, and the first electrode layer 51 is also directly formed on the surface of the cover plate 30 facing the display panel 10. It can be understood that an optically transparent adhesive 80 is formed between the cover plate 30 and the display panel 10 to bond the cover plate 30 and the display panel 10 together. The touch sensing electrode 40 and the pressure sensing element 50 are wrapped by the optical transparent glue 80.
可以理解的，所述壓力感測元件50的數量可以根據需要調整為一個、兩個、三個或四個以上。 It can be understood that the number of the pressure sensing elements 50 can be adjusted to one, two, three, or more than four as required.
請一併參考圖3及圖4，圖3是本發明第二實施方式的觸控顯示裝置200的示意圖，圖4是圖3的觸控顯示裝置200的剖面示意圖。 Please refer to FIG. 3 and FIG. 4 together. FIG. 3 is a schematic diagram of a touch display device 200 according to a second embodiment of the present invention. FIG.
該觸控顯示裝置200為液晶觸控顯示裝置或有機電致發光觸控顯示裝置。該觸控顯示裝置200包括顯示面板10及蓋設於顯示面板10上的蓋板30。該蓋板30為透明的。該蓋板30的材質可為透明的玻璃或透明的塑膠。該觸控顯示裝置200定義有顯示區110及圍繞該顯示區110的邊框區130。該蓋板30對應該顯示區110形成有一觸摸面。當該觸控顯示裝置200為液晶顯示裝置，該顯示面板10為常規的液晶顯示面板，其包括層疊設置對向基板、液晶層及薄膜電晶體陣列基板。當該觸控顯示裝置200為有機電致發光顯示 裝置，該顯示面板10為常規的有機電致發光顯示面板，其包括層疊設置的薄膜電晶體陣列基板以及有機發光層。 The touch display device 200 is a liquid crystal touch display device or an organic electroluminescence touch display device. The touch display device 200 includes a display panel 10 and a cover plate 30 disposed on the display panel 10. The cover plate 30 is transparent. The material of the cover plate 30 can be transparent glass or transparent plastic. The touch display device 200 defines a display area 110 and a border area 130 surrounding the display area 110. The cover plate 30 defines a touch surface corresponding to the display area 110. When the touch display device 200 is a liquid crystal display device, the display panel 10 is a conventional liquid crystal display panel, which includes a counter substrate, a liquid crystal layer, and a thin film transistor array substrate. When the touch display device 200 is an organic electroluminescence display Device, the display panel 10 is a conventional organic electroluminescence display panel, which includes a thin-film transistor array substrate and an organic light-emitting layer which are arranged in a stack.
該蓋板30與該顯示面板10之間設置有觸控感測電極40和至少一個壓力感測元件50，使得該觸控顯示裝置100具有觸控感測和壓力感測的功能。該觸控感測電極40對應該顯示區110設置，該至少一個壓力感測元件50設置在該觸控感測電極40的周邊。 A touch sensing electrode 40 and at least one pressure sensing element 50 are disposed between the cover plate 30 and the display panel 10, so that the touch display device 100 has functions of touch sensing and pressure sensing. The touch sensing electrode 40 is disposed corresponding to the display area 110, and the at least one pressure sensing element 50 is disposed around the touch sensing electrode 40.
本實施例中，該觸控顯示裝置100具有四個角落，該壓力感測元件50的數量為四個，每個壓力感測元件50鄰近該觸控顯示裝置100的一個角落設置。該四個壓力感測元件50對應邊框區130設置。 In this embodiment, the touch display device 100 has four corners, and the number of the pressure sensing elements 50 is four. Each pressure sensing element 50 is disposed adjacent to one corner of the touch display device 100. The four pressure sensing elements 50 are disposed corresponding to the frame region 130.
本實施例中，該觸控感測電極40為雙層且透明的，其包括複數個第一觸控電極43和複數個第二觸控電極45。所述複數個第一觸控電極43層疊於所述複數個第二觸控電極45上方，且該複數個第一觸控電極43更靠近所述蓋板30。所述複數個第一觸控電極43間隔設置，每一個第一觸控電極43呈長條狀且沿第一方向延伸。所述複數個第二觸控電極45間隔設置，每一個第二觸控電極45呈長條狀且沿第二方向延伸。該第一方向與第二方向為不同的方向。本實施例中，第一方向垂直第二方向。所述複數個第一觸控電極43與所述複數個第二觸控電極45相互絕緣，如圖4所示，所述複數個第一觸控電極43與所述複數個第二觸控電極45之間設置有一絕緣層140。 In this embodiment, the touch sensing electrode 40 is double-layered and transparent, and includes a plurality of first touch electrodes 43 and a plurality of second touch electrodes 45. The plurality of first touch electrodes 43 are stacked on the plurality of second touch electrodes 45, and the plurality of first touch electrodes 43 are closer to the cover plate 30. The plurality of first touch electrodes 43 are arranged at intervals, and each of the first touch electrodes 43 is elongated and extends along the first direction. The plurality of second touch electrodes 45 are arranged at intervals, and each of the second touch electrodes 45 is elongated and extends along the second direction. The first direction is different from the second direction. In this embodiment, the first direction is perpendicular to the second direction. The plurality of first touch electrodes 43 and the plurality of second touch electrodes 45 are insulated from each other. As shown in FIG. 4, the plurality of first touch electrodes 43 and the plurality of second touch electrodes are insulated from each other. An insulating layer 140 is provided between 45.
所述複數個第一觸控電極43和所述複數個第二觸控電極45的材質可為本領域常規使用的各種透明導電材料，如氧化銦錫(ITO)。 The materials of the plurality of first touch electrodes 43 and the plurality of second touch electrodes 45 may be various transparent conductive materials conventionally used in the art, such as indium tin oxide (ITO).
每一個壓力感測元件50包括層疊設置的第一電極層51、壓電材料層53及第二電極層55，其中該第一電極層51相對更靠近該蓋板30。該壓電材料層53的材質可為聚合物壓電材料，如聚偏氟乙烯(PVDF)。該壓電材 料層53的厚度小於等於20微米。本實施例中，該第一電極層51與所述複數個第二觸控電極45為同層設置，即該第一電極層51與所述複數個第二觸控電極45採用同一導電材料層經同一圖案化製程同時形成。 Each pressure-sensing element 50 includes a first electrode layer 51, a piezoelectric material layer 53, and a second electrode layer 55 that are stacked, wherein the first electrode layer 51 is relatively closer to the cover plate 30. The material of the piezoelectric material layer 53 may be a polymer piezoelectric material, such as polyvinylidene fluoride (PVDF). The piezoelectric material The thickness of the material layer 53 is 20 μm or less. In this embodiment, the first electrode layer 51 and the plurality of second touch electrodes 45 are disposed on the same layer, that is, the first electrode layer 51 and the plurality of second touch electrodes 45 use the same conductive material layer. Simultaneously formed through the same patterning process.
可以理解的，在其他的變更實施例中，也可設置為第一電極層51或第二電極層55與所述複數個第一觸控電極43同層設置，即第一電極層51或第二電極層55與所述複數個第一觸控電極43採用同一導電材料層經同一圖案化製程同時形成。 It can be understood that, in other modified embodiments, the first electrode layer 51 or the second electrode layer 55 may be provided on the same layer as the plurality of first touch electrodes 43, that is, the first electrode layer 51 or The two electrode layers 55 and the plurality of first touch electrodes 43 are formed at the same time through the same patterning process using the same conductive material layer.
該觸控顯示裝置200的邊框區130設置有觸摸控制電路60。所述觸控感測電極40藉由多條走線120電性連接該觸摸控制電路60。具體可為每個第一觸控電極43和每個第二觸控電極45分別藉由一條走線120電性連接該觸摸控制電路60，或者是兩個或兩個以上相鄰的子電極塊41藉由一條走線電性連接該觸摸控制電路60。該當手指觸摸該蓋板30的觸摸面時，該觸摸處對應的第一觸控電極43或第二觸控電極45的電信號發生改變，該電信號的改變藉由走線120傳輸到觸摸控制電路60，從而使觸摸位置得以偵測到。該觸控顯示裝置200的邊框區130還設置有壓力感測電路70。所述每一個該壓力感測元件50藉由一走線120電性連接該壓力感測電路70。具體可為第一電極層51和第二電極層55分別藉由一條走線120電性連接該壓力感測電路70。該當手指按壓該蓋板30的觸摸面時，壓力感測元件50的壓電材料層53承受到手指觸摸壓力的分解力，使第一電極層51與第二電極層55的之間的電勢差發生改變，該電勢差的改變藉由走線120傳輸到壓力感測電路70，換算得到每一個壓力感測元件50所受到的壓力，再綜合四個壓力感測元件50的壓力換算得到觸摸處所受的實際的觸摸壓力。所述換算的具體方法可為本領域常規的換算方法，此處不再贅述。 可以理解的，該蓋板30與該顯示面板10之間還形成有光學透明膠80以該蓋板30與該顯示面板10粘結於一體。該觸控感測電極40和壓力感測元件50被所述光學透明膠80包裹。 A touch control circuit 60 is disposed in the frame area 130 of the touch display device 200. The touch sensing electrode 40 is electrically connected to the touch control circuit 60 through a plurality of traces 120. Specifically, each of the first touch electrodes 43 and each of the second touch electrodes 45 may be electrically connected to the touch control circuit 60 through a trace 120 or two or more adjacent sub-electrode blocks. 41 is electrically connected to the touch control circuit 60 through a trace. When a finger touches the touch surface of the cover plate 30, the electrical signal of the first touch electrode 43 or the second touch electrode 45 corresponding to the touch position changes, and the change of the electrical signal is transmitted to the touch control through the wiring 120. The circuit 60 enables the touch position to be detected. The frame area 130 of the touch display device 200 is further provided with a pressure sensing circuit 70. Each of the pressure sensing elements 50 is electrically connected to the pressure sensing circuit 70 through a trace 120. Specifically, the first electrode layer 51 and the second electrode layer 55 may be electrically connected to the pressure sensing circuit 70 through a trace 120, respectively. When the finger presses the touch surface of the cover plate 30, the piezoelectric material layer 53 of the pressure sensing element 50 receives the decomposition force of the finger touch pressure, so that the potential difference between the first electrode layer 51 and the second electrode layer 55 occurs. The change of the potential difference is transmitted to the pressure sensing circuit 70 through the wiring 120, and the pressure received by each pressure sensing element 50 is converted, and then the pressure of the four pressure sensing elements 50 is converted to obtain the touched position. Actual touch pressure. The specific conversion method may be a conventional conversion method in the art, and is not repeated here. It can be understood that an optically transparent adhesive 80 is formed between the cover plate 30 and the display panel 10 so that the cover plate 30 and the display panel 10 are integrated together. The touch sensing electrode 40 and the pressure sensing element 50 are wrapped by the optical transparent glue 80.
可以理解的，所述壓力感測元件50的數量可以根據需要調整為一個、兩個、三個或四個以上。 It can be understood that the number of the pressure sensing elements 50 can be adjusted to one, two, three, or more than four as required.
第一實施例的觸控顯示裝置100和第二實施例的觸控顯示裝置200均為外掛式觸控顯示裝置，即觸控感測電極40形成在顯示面板10的外部；可以理解的，本發明的觸控顯示裝置不限於外掛式觸控顯示裝置，也可以為內嵌式觸控顯示裝置，即觸控感測電極40形成在顯示面板10的內部。 The touch display device 100 of the first embodiment and the touch display device 200 of the second embodiment are both external touch display devices, that is, the touch sensing electrodes 40 are formed outside the display panel 10; it can be understood that this The touch display device of the invention is not limited to an external touch display device, and may also be an in-cell touch display device, that is, the touch sensing electrode 40 is formed inside the display panel 10.
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| TWI623868B (en) * | 2017-07-26 | 2018-05-11 | 友達光電股份有限公司 | Display panel |
| CN108268180B (en) * | 2018-04-11 | 2020-03-10 | 京东方科技集团股份有限公司 | Pressure touch device, pressure touch feedback method and touch display device |
| CN111857392A (en) * | 2019-04-26 | 2020-10-30 | 富泰华工业（深圳）有限公司 | Touch sensing module and electronic device using same |
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