CN102841708B - Touch control display panel - Google Patents
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Abstract
Description
技术领域 technical field
本发明是有关于一种触控显示面板，且特别是有关于一种可疏通静电放电电流（ElectrostaticDischargeCurrent）的触控显示面板。The present invention relates to a touch display panel, and in particular to a touch display panel capable of unblocking an electrostatic discharge current (Electrostatic Discharge Current).
背景技术 Background technique
近年来，随着资讯技术、无线行动通讯和资讯家电的快速发展与应用，为了达到更便利、体积更轻巧化以及更人性化的目的，许多电子资讯产品，例如是行动电话（MobilePhone）、掌上型电脑（HandheldPC）、个人化数字助理（PersonalDigitalAssistance，PDA）或是智慧型手机（SmartPhone）等，其输入方式已由传统的键盘或鼠标等装置，转变为使用触控面板（TouchPanel）作为输入装置。由于便利性与操作的直觉性，触控面板成为极受欢迎的新型态人机界面与多媒体互动方式，而受到相当的重视与大量开发，其中触控显示面板更为现今最流行的产品。In recent years, with the rapid development and application of information technology, wireless mobile communications and information home appliances, many electronic information products, such as mobile phones (MobilePhone), palm Handheld PC, Personal Digital Assistant (PDA) or smart phone (SmartPhone), etc., the input method has changed from traditional keyboard or mouse to the use of touch panel (TouchPanel) as the input device . Due to the convenience and intuition of operation, the touch panel has become a very popular new type of human-machine interface and multimedia interaction method, and has received considerable attention and extensive development. Among them, the touch display panel is the most popular product today.
触控面板依照其结构及制造方式的不同，大致上可区分为整合式（On-Cell）、内建式（In-Cell）及外贴式（Added-on），其中整合式及内建式触控面板是将触控功能整合于面板生产制程，有助于缩小整体产品的厚度，以符合产品轻薄化的趋势，而外贴式触控面板是将触控面板与显示面板分开制作后再进行贴附，以简化单一制程的步骤。Touch panels can be roughly divided into On-Cell, In-Cell and Added-on according to their structures and manufacturing methods. The touch panel integrates the touch function into the panel production process, which helps to reduce the thickness of the overall product, in line with the trend of thinner products, while the surface-mounted touch panel is to separate the touch panel and the display panel Attach to simplify the steps of a single process.
使用者可利用触控工具例如触控笔轻点触控面板，或直接利用手指触碰触控面板，以进行触控显示面板的操作，而操作结果可通过显示面板显现。当使用者操作触控显示面板时，触控工具或是使用者的手指会与触控面板发生摩擦，因而在触控面板上产生静电放电（ElectrostaticDischargeCurrent，ESD）。由于静电放电电压比一般所提供的电源的电压大出许多，当静电放电发生在触控面板上的特定区域时，此静电放电的电流可能会将触控面板上的元件烧毁，而导致触控面板的功能受到影响甚至产生损毁。The user can tap the touch panel with a touch tool such as a stylus, or directly touch the touch panel with a finger to operate the touch display panel, and the operation result can be displayed through the display panel. When the user operates the touch display panel, the touch tool or the user's finger will rub against the touch panel, thus generating electrostatic discharge (Electrostatic Discharge Current, ESD) on the touch panel. Because the electrostatic discharge voltage is much higher than the voltage of the general power supply, when the electrostatic discharge occurs in a specific area on the touch panel, the electrostatic discharge current may burn the components on the touch panel, resulting in touch The function of the panel is affected or even damaged.
发明内容 Contents of the invention
本发明提供一种触控显示面板，具有疏通静电放电电流的功能。The invention provides a touch display panel, which has the function of dredging electrostatic discharge current.
本发明提出一种触控显示面板，包括一显示面板、一触控面板、一电路板、一第一软性电路板以及一第二软性电路板。触控面板位于显示面板的一侧。电路板设置于显示面板与触控面板之间。第一软性电路板连接于触控面板与电路板之间。第二软性电路板连接于电路板与显示面板之间，其中触控面板上所产生的一静电放电电流经第一软性电路板而传导至电路板，再经由第二软性电路板而疏通至显示面板。The present invention provides a touch display panel, including a display panel, a touch panel, a circuit board, a first flexible circuit board and a second flexible circuit board. The touch panel is located on one side of the display panel. The circuit board is arranged between the display panel and the touch panel. The first flexible circuit board is connected between the touch panel and the circuit board. The second flexible circuit board is connected between the circuit board and the display panel, wherein an electrostatic discharge current generated on the touch panel is conducted to the circuit board through the first flexible circuit board, and then transferred to the circuit board through the second flexible circuit board Unblock to display panel.
基于上述，本发明提出的触控显示面板可将触控面板上所产生的静电放电电流经由第一软性电路板而传导至电路板，再经由第二软性电路板而疏通至显示面板。据此，触控显示面板具有疏通静电放电电流的功能。Based on the above, the touch display panel proposed by the present invention can conduct the electrostatic discharge current generated on the touch panel to the circuit board through the first flexible circuit board, and then pass through the second flexible circuit board to the display panel. Accordingly, the touch display panel has the function of dredging the electrostatic discharge current.
为让本发明的上述特征和优点能更明显易懂，下文特举实施例，并配合所附图式作详细说明如下。In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.
附图说明 Description of drawings
图1是本发明一实施例的触控显示面板的示意图；FIG. 1 is a schematic diagram of a touch display panel according to an embodiment of the present invention;
图2是图1的触控显示面板于显示面板处的示意图；FIG. 2 is a schematic diagram of the touch display panel of FIG. 1 at the display panel;
图3是本发明另一实施例的触控显示面板于显示面板处的示意图。FIG. 3 is a schematic diagram of a touch display panel at the display panel according to another embodiment of the present invention.
其中，附图标记：Among them, reference signs:
100：触控显示面板100: touch display panel
110：显示面板110: display panel
112：共用电压线112: common voltage line
114：像素结构114: Pixel structure
116、124：信号线116, 124: signal line
120：触控面板120: Touch panel
122：静电防护环122: Static protection ring
126：接垫电极126: pad electrode
130：电路板130: circuit board
140：第一软性电路板140: The first flexible circuit board
150：第二软性电路板150: Second flexible circuit board
160：第一接垫电极160: first pad electrode
170：第二接垫电极170: second pad electrode
180：开关元件180: switching element
C：控制装置C: Control device
DR：驱动装置DR: drive unit
E：静电放电电流E: electrostatic discharge current
PE：像素电极PE: pixel electrode
R1：显示区R1: display area
R2：非显示区R2: non-display area
R3：触控区R3: touch area
R4：非触控区R4: non-touch area
T：主动元件T: active component
具体实施方式 Detailed ways
以下结合附图和具体实施例对本发明进行详细描述，但不作为对本发明的限定。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
图1是本发明一实施例的触控显示面板的示意图。请参考图1。在本实施例中，触控显示面板100包括显示面板110、触控面板120、电路板130、第一软性电路板140以及第二软性电路板150。为使图式较为清楚，图1将显示面板110与触控面板120分开绘示。在本实施例中，触控面板120位于显示面板110的一侧并贴合至显示面板110。电路板130设置于显示面板110与触控面板120之间。FIG. 1 is a schematic diagram of a touch display panel according to an embodiment of the present invention. Please refer to Figure 1. In this embodiment, the touch display panel 100 includes a display panel 110 , a touch panel 120 , a circuit board 130 , a first flexible circuit board 140 and a second flexible circuit board 150 . To make the drawing clearer, the display panel 110 and the touch panel 120 are shown separately in FIG. 1 . In this embodiment, the touch panel 120 is located on one side of the display panel 110 and attached to the display panel 110 . The circuit board 130 is disposed between the display panel 110 and the touch panel 120 .
详细而言，请参考图1与图2。图2是图1的触控显示面板于显示面板处的示意图。在本实施例中，显示面板110具有显示区R1以及非显示区R2。显示面板110的显示区R1中具有多个像素结构114以及与像素结构114电性连接的多条信号线116，如图2所示，而显示面板110可藉由这些像素结构114与这些信号线116显示影像。在本实施例，上述的信号线116包括扫描线以及数据线，且每一个像素结构114与对应的一条扫描线以及对应的一条数据线电性连接。此外，像素结构114包括主动元件T以及与主动元件T电性连接的像素电极PE，而上述的信号线116自显示区R1延伸至非显示区域R2中以与驱动装置DR电性连接。For details, please refer to FIG. 1 and FIG. 2 . FIG. 2 is a schematic diagram of the touch display panel of FIG. 1 at the display panel. In this embodiment, the display panel 110 has a display area R1 and a non-display area R2. The display region R1 of the display panel 110 has a plurality of pixel structures 114 and a plurality of signal lines 116 electrically connected to the pixel structures 114, as shown in FIG. 116 displays images. In this embodiment, the aforementioned signal lines 116 include scan lines and data lines, and each pixel structure 114 is electrically connected to a corresponding scan line and a corresponding data line. In addition, the pixel structure 114 includes an active device T and a pixel electrode PE electrically connected to the active device T, and the above-mentioned signal line 116 extends from the display region R1 to the non-display region R2 to be electrically connected to the driving device DR.
在本实施例中，显示面板110的非显示区R2中具有共用电压线112。共用电压线112围绕于显示区R1的周围。所述共用电压线112可提供显示区R1中的像素结构114所需的共用电压。举例来说，像素结构114中的电容电极线可以电性连接所述共用电压线112，以使共用电压线112上的电压可以传递至各像素结构114的电容电极线。In this embodiment, the non-display region R2 of the display panel 110 has a common voltage line 112 . The common voltage line 112 surrounds the display region R1. The common voltage line 112 can provide the common voltage required by the pixel structure 114 in the display region R1. For example, the capacitor electrode lines in the pixel structures 114 can be electrically connected to the common voltage line 112 , so that the voltage on the common voltage line 112 can be transmitted to the capacitor electrode lines of each pixel structure 114 .
此外，在本实施例中，显示面板110的非显示区R2中具有驱动装置DR、多个第一接垫电极160以及至少一个第二接垫电极170。驱动装置DR与信号线116电性连接，第一接垫电极160与驱动装置DR电性连接，第二接垫电极170与共用电压线112电性连接。上述的第一接垫电极160以及第二接垫电极170与第一软性电路板150电性连接（如图1所示）。In addition, in this embodiment, the non-display region R2 of the display panel 110 has a driving device DR, a plurality of first pad electrodes 160 and at least one second pad electrode 170 . The driving device DR is electrically connected to the signal line 116 , the first pad electrode 160 is electrically connected to the driving device DR, and the second pad electrode 170 is electrically connected to the common voltage line 112 . The first pad electrodes 160 and the second pad electrodes 170 are electrically connected to the first flexible circuit board 150 (as shown in FIG. 1 ).
另一方面，请参考图1，触控面板120具有触控区R3以及非触控区R4。触控面板120的触控区R3中具有触控元件层（未绘示），上述触控元件层可包括由电容式触控元件或是电阻式触控元件。上述的触控元件层与多条信号线124以及对应的接垫电极126电性连接，以使触控元件层的触控信号可以传出。此外，上述的接垫电极126与第一软性电路板140电性连接。根据本实施例，所述触控面板120更包括控制装置C，其电性连接于触控面板120与该第一软性电路板140之间。换言之，当使用者触碰触控面板120以使触控元件层产生感应时，触控信号即可通过信号线124以及接垫电极126而传递至控制装置C，以计算出触控位置。On the other hand, please refer to FIG. 1 , the touch panel 120 has a touch area R3 and a non-touch area R4 . There is a touch element layer (not shown) in the touch region R3 of the touch panel 120 , and the touch element layer may include a capacitive touch element or a resistive touch element. The above-mentioned touch element layer is electrically connected to a plurality of signal lines 124 and corresponding pad electrodes 126 so that the touch signal of the touch element layer can be transmitted. In addition, the aforementioned pad electrodes 126 are electrically connected to the first flexible circuit board 140 . According to this embodiment, the touch panel 120 further includes a control device C electrically connected between the touch panel 120 and the first flexible circuit board 140 . In other words, when the user touches the touch panel 120 to induce the touch element layer, the touch signal can be transmitted to the control device C through the signal line 124 and the pad electrode 126 to calculate the touch position.
另外，触控面板120的非触控区R4中具有静电防护环122。静电防护环122围绕于触控区R3的周围。当触控面板120产生静电放电电流E时，静电放电电流E可导通至静电防护环122上，以避免静电放电电流E对触控面板120内的元件造成损坏。In addition, the non-touch region R4 of the touch panel 120 has an electrostatic protection ring 122 . The ESD protection ring 122 surrounds the touch area R3. When the touch panel 120 generates the electrostatic discharge current E, the electrostatic discharge current E can be conducted to the electrostatic protection ring 122 to prevent the electrostatic discharge current E from damaging components in the touch panel 120 .
承上所述，第一软性电路板140连接于触控面板120与电路板130之间，而第二软性电路板150连接于电路板130与显示面板110之间。因此，当触控面板120上产生静电放电电流E时，静电防护环122上的静电放电电流E可经由第一软性电路板140而传导至电路板130，再经由第二软性电路板150而疏通至显示面板110，以避免静电放电电流E聚集而对触控面板120造成破坏。更详细的说明是，静电防护环122上的静电放电电流E经第一软性电路板140、控制装置C而传导至电路板130，再经由第二软性电路板150与第二接垫电极170而疏通至显示面板110的共用电压线112上。As mentioned above, the first flexible circuit board 140 is connected between the touch panel 120 and the circuit board 130 , and the second flexible circuit board 150 is connected between the circuit board 130 and the display panel 110 . Therefore, when the electrostatic discharge current E is generated on the touch panel 120, the electrostatic discharge current E on the electrostatic protection ring 122 can be conducted to the circuit board 130 through the first flexible circuit board 140, and then through the second flexible circuit board 150. And it is connected to the display panel 110 to prevent the electrostatic discharge current E from accumulating and causing damage to the touch panel 120 . A more detailed description is that the electrostatic discharge current E on the electrostatic protection ring 122 is conducted to the circuit board 130 through the first flexible circuit board 140 and the control device C, and then passes through the second flexible circuit board 150 and the second pad electrode 170 to connect to the common voltage line 112 of the display panel 110 .
由于触控面板120上的静电放电电流E可通过静电防护环122、第一软性电路板140而传导至电路板130，再经由第二软性电路板150而传导至第二接垫电极170，因此可使得静电放电电流E可经由第二接垫电极170而疏通至显示面板110的共用电压线112上，以避免静电放电电流E聚集而对触控面板120造成破坏。Since the electrostatic discharge current E on the touch panel 120 can be conducted to the circuit board 130 through the electrostatic protection ring 122 and the first flexible circuit board 140 , and then conducted to the second pad electrode 170 through the second flexible circuit board 150 Therefore, the electrostatic discharge current E can be channeled to the common voltage line 112 of the display panel 110 through the second pad electrode 170 , so as to prevent the electrostatic discharge current E from accumulating and causing damage to the touch panel 120 .
图3是本发明另一实施例的触控显示面板于显示面板处的示意图。请参考图3，在本发明另一实施例中，显示面板110具有开关元件180。开关元件180电性连接于第二接垫电极170与共用电压线112之间。在本实施例中，开关元件180为晶体管（Transistor）元件，但在本发明其他实施例中，开关元件180可为二极管（Diode）元件或其他适当的元件，本发明不以此为限制。开关元件180可设定启动开关的临界电流量。将开关元件180设置于第二接垫电极170与共用电压线112之间，可控制静电放电电流E是否经由第二接垫电极170而疏通至共用电压线112。FIG. 3 is a schematic diagram of a touch display panel at the display panel according to another embodiment of the present invention. Please refer to FIG. 3 , in another embodiment of the present invention, the display panel 110 has a switch element 180 . The switch element 180 is electrically connected between the second pad electrode 170 and the common voltage line 112 . In this embodiment, the switch element 180 is a transistor (Transistor) element, but in other embodiments of the present invention, the switch element 180 can be a diode (Diode) element or other suitable elements, and the present invention is not limited thereto. The switching element 180 can set the threshold current amount to activate the switch. The switching element 180 is disposed between the second pad electrode 170 and the common voltage line 112 to control whether the electrostatic discharge current E is channeled to the common voltage line 112 through the second pad electrode 170 .
换言之，当触控面板120上的静电放电电流E传导至第二接垫电极170时，若静电放电电流E的电流量小于开关元件180的临界电流量而无法启动开关元件180，则静电放电电流E不能通过开关元件180。相对地，当触控面板120上的静电放电电流E传导至第二接垫电极170时，若静电放电电流E的电流量大于开关元件180的临界电流量而启动开关元件180，则静电放电电流E通过开关元件180而疏通至共用电压线112。In other words, when the electrostatic discharge current E on the touch panel 120 is conducted to the second pad electrode 170, if the current amount of the electrostatic discharge current E is less than the critical current amount of the switching element 180 and the switching element 180 cannot be activated, the electrostatic discharge current E E cannot pass through the switching element 180 . In contrast, when the electrostatic discharge current E on the touch panel 120 is conducted to the second pad electrode 170, if the magnitude of the electrostatic discharge current E is greater than the critical current magnitude of the switching element 180 and the switching element 180 is activated, the electrostatic discharge current E is channeled to the common voltage line 112 through the switching element 180 .
因此，静电放电电流E启动开关元件180的临界电流量，可设定为不超过会对触控面板120造成破坏的电流量，使得静电放电电流E在电流量大到足以破坏触控面板120之前，即可从触控面板120疏通至显示面板110的共用电压线112上。Therefore, the critical current amount of the electrostatic discharge current E to start the switch element 180 can be set to not exceed the current amount that will damage the touch panel 120, so that the electrostatic discharge current E is large enough to destroy the touch panel 120 before the current amount , that is, it can be connected from the touch panel 120 to the common voltage line 112 of the display panel 110 .
据此，触控面板120上的静电放电电流E可经由静电防护环122、第一软性电路板140、控制装置C而传导至电路板130，再经由第二软性电路板150与第二接垫电极170而传导至开关元件180。若开关元件180被启动，则静电放电电流E可疏通至显示面板110上的共用电压线112，以避免静电放电电流E聚集而对触控面板120造成破坏。Accordingly, the electrostatic discharge current E on the touch panel 120 can be conducted to the circuit board 130 through the electrostatic protection ring 122, the first flexible circuit board 140, and the control device C, and then through the second flexible circuit board 150 and the second flexible circuit board 150. The pad electrode 170 conducts to the switch element 180 . If the switching element 180 is activated, the electrostatic discharge current E can be unblocked to the common voltage line 112 on the display panel 110 , so as to prevent the electrostatic discharge current E from accumulating and causing damage to the touch panel 120 .
另一方面，在本发明其他实施例中，显示面板110可仅具有一个开关元件180或具有多个开关元件180，而开关元件180电性连接于第二接垫电极170与共用电压线112之间。藉由调整开关元件180的数量，可设定静电放电电流E疏通至共用电压线112的临界电流量。然而，在本发明其他实施例中，显示面板110亦可不设置开关元件180，使得触控面板120上产生的静电放电电流E可随时经由第二接垫电极170疏通至共用电压线112。本发明不限定开关元件180的数量与设置与否。On the other hand, in other embodiments of the present invention, the display panel 110 may have only one switch element 180 or multiple switch elements 180 , and the switch element 180 is electrically connected between the second pad electrode 170 and the common voltage line 112 between. By adjusting the quantity of the switching elements 180 , the critical current amount of the ESD current E flowing to the common voltage line 112 can be set. However, in other embodiments of the present invention, the display panel 110 may not be provided with the switch element 180 , so that the electrostatic discharge current E generated on the touch panel 120 can be unblocked to the common voltage line 112 through the second pad electrode 170 at any time. The present invention does not limit the number and configuration of the switching elements 180 .
综上所述，本发明提出一种触控显示面板，其触控面板、第一软性电路板、电路板、第二软性电路板以及显示面板依序电性连接。触控面板上具有静电防护环，显示面板上具有共用电压线，且共用电压线与显示面板上的第二接垫电极电性连接。因此，触控面板上所产生的静电放电电流可先聚集至静电防护环，并经由第一软性电路板而传导至电路板，再传导至第二软性电路板并经由第二接垫电极而疏通至显示面板的共用电压线。据此，触控显示面板具有疏通静电放电电流的功能，以避免静电放电电流对触控面板造成破坏。To sum up, the present invention proposes a touch display panel, in which the touch panel, the first flexible circuit board, the circuit board, the second flexible circuit board and the display panel are electrically connected in sequence. The touch panel has an electrostatic protection ring, and the display panel has a common voltage line, and the common voltage line is electrically connected to the second pad electrode on the display panel. Therefore, the electrostatic discharge current generated on the touch panel can be gathered to the electrostatic protection ring first, and conducted to the circuit board through the first flexible circuit board, and then conducted to the second flexible circuit board and passed through the second pad electrode And clear the common voltage line to the display panel. Accordingly, the touch display panel has the function of dredging the electrostatic discharge current, so as to prevent the electrostatic discharge current from damaging the touch panel.
虽然本发明已以实施例揭露如上，然其并非用以限定本发明，任何所属技术领域中具有通常知识者，在不脱离本发明的精神和范围内，当可作些许的更动与润饰，故本发明的保护范围当视后附的申请专利范围所界定者为准。Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.
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| TW101115792A TWI448228B (en) | 2012-05-03 | 2012-05-03 | Touch display panel |
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| TW201441885A (en) * | 2013-04-30 | 2014-11-01 | Innolux Corp | Touch display apparatus |
| TWI507940B (en) * | 2013-07-17 | 2015-11-11 | Au Optronics Corp | Touch panel and touch display panel |
| TWI522868B (en) * | 2014-11-14 | 2016-02-21 | 友達光電股份有限公司 | Touch panel |
| TWM511728U (en) * | 2015-05-28 | 2015-11-01 | Giantplus Technology Co Ltd | Flexible printed circuit board and touch display module |
| CN105390118A (en) * | 2015-12-28 | 2016-03-09 | 武汉华星光电技术有限公司 | Display panel, gate driver on array and arrangement method of display panel |
| TWI641974B (en) * | 2017-08-17 | 2018-11-21 | 宏碁股份有限公司 | Touch panel and touch panel detection method |
| CN111258103B (en) * | 2020-03-27 | 2021-07-06 | 深圳市华星光电半导体显示技术有限公司 | Display panel |
| CN116207102B (en) * | 2021-12-01 | 2025-09-26 | 群创光电股份有限公司 | electronic devices |
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