TW201128484A - Touch panel capable of eliminating ghost points - Google Patents

Abstract

The present invention is related to a touch panel capable of eliminating ghost points, which includes a scanning bus coupled to a plurality of scanning lines, used to scan a touch-control picture plane; a detecting bus coupled to a plurality of detecting lines, which are separately staggered with those scanning lines and detect at least a touch-control position of the touch-control picture plane, wherein each of the detecting lines is coupled to a plurality of detecting points, with those detecting points corresponding to those scanning lines; a plurality of unidirectional-conduction elements, separately coupled to those detecting points and located in between the detecting lines of those detecting points; a control unit, coupled to the scanning bus and the detecting bus to the scanning bus and the detecting bus. Thus, the present invention can eliminate ghost points phenomenon, further to increase the efficiency of the touch panel.

Description

201128484 VI. Description of the Invention: A touch panel, which is particularly useful in the field of the invention. [0001] The present invention relates to a touch panel for removing ghost points. [Prior Art] [_ Press' In recent years, various electronic products have been cut toward simple operation, small size and large screen size. Especially for portable electronic products, the requirements for volume and screen size are more stringent. Therefore, many electronic products integrate the touch panel with the liquid crystal display panel to save the space required for the keyboard or the control buttons, thereby expanding the configurable area of the screen. Currently, touch panels can be roughly classified into resistive, capacitive, infrared, and ultrasonic touch panels. Among them, resistive touch panels and capacitive touch panels are the most common products. In the case of capacitive touch panels, the multi-touch feature provides a more user-friendly operating mode, making capacitive touch panels increasingly popular in the market. However, the capacitor 弋 touch panel must touch the touch panel with the guide material to operate, so the user cannot operate with gloves or non-conductor materials. In the case of a resistive touch panel, no matter which medium the user touches the touch panel, the touch panel can be operated, thereby improving the convenience of the touch panel. In addition, the cost of the resistive touch panel is relatively low and the technology of the electric touch panel is relatively mature, so the market share is high. Please refer to the first figure, which is the front-end factory of the touch panel of the prior art. As shown in the figure, a "general multi-touch panel includes - a scanning bank 10", a detecting bus 20' and a control unit 30, and a scanning bus 10' is coupled to a plurality of scanning lines 12'. Scanning line 12, set at 099143130 Form No. A0101 Page 3 / Total 15 pages, 0992074709-0 201128484 Touch panel upper board, detection bus 2 〇, system, light connection complex detection line 22 " The measuring line 22 is disposed on the lower panel of the touch panel, that is, below the scanning lines 12, and the control unit 30, the scanning busbar 1' and the detecting busbar 20, to control the scanning busbar 10 And detecting the bus bar 20, and knowing the plurality of touch points on the touch panel, that is, when the touch panel detects the touch point, the control unit 3 generates and sequentially transmits the scan nickname to Scanning the bus bar 1〇, the scan lines 12, when a touch occurs, the scan line 12 on the upper board will be interconnected with the H line 2 2 # of the lower board to generate a test signal The control unit is 3兀, and the position of the touch point can be known by detecting the signal. However, since the general touch panel has 3 touch points or more than 3 touch points, / 2 of the 3 touch points have the same fork axis detection line 22' another - The positions of the two scan lines 12 with the same γ-axis will have a non-touch position. When the detection bus is 2, the received detection signal will be turned off as a touched emotional student. (4) As shown in the first figure, the actual touched position in the touch panel is a first touch point P, a second touch point ^ and a third touch point %. The unit 30 detects that the virtual touch point is a fourth touch point P4. When the control unit t3030 scans the bus bar 1〇 and scans to the fourth touch point Pi (ghost point), The relationship between the touch point ', the second touch point ^ and the third touch point 卩3 three points of the actual touch point, so that the control unit Chuan, 099143130 misjudges the fourth touch point P4 as the actual touch point, that is, control Unit 3〇, input scan signal VIN to scan line! 2' and scan signal, scan line 12 through the upper board to the first touch point, then pass the detection line 22 of the lower board, to the second touch After 2', after the scan line 12 of the upper board, to the third touch point Ps, thus, the control unit 3〇, by inputting the scan lines 丨2, 0992074709-0 Form No. A0101 Page 4 / A total of 15 pages of 201128484 one scan signal V j N and the detection signal detected by one of the detection lines 2 2 ', and the fourth touch point p is misjudged, which is the actual touch point, that is, SENSE 4 Three touch points (ρ^ρ^ρρ, one of two points (ρ^ρρ has the same X-axis detection line 22', and the other two points (Ρ2, Ρ3) have the same x-axis scan line 12') Therefore, the efficiency of the touch panel is affected. Therefore, how to solve the above problem is to propose a novel touch panel capable of eliminating ghost points, which can avoid the ghost point effect of the touch panel, so that the above problem can be solved. SUMMARY OF THE INVENTION [0003] One of the objects of the present invention is to provide a touch panel capable of eliminating ghost points, wherein a single-way component is coupled between one of the complex detection points and one of the complex detection lines. In order to eliminate the ghost phenomenon, thereby increasing the efficiency of the touch panel. One of the objects of the present invention The invention provides a touch panel capable of eliminating ghost points, which has a threshold value by a single-way conduction component to confirm that the touch point is an actual touch point, thereby increasing the efficiency of the touch panel. The touch panel of the ghost point includes a scan bus, a detection bus, a plurality of single-way components and a control unit. The scan bus is coupled to the plurality of scan lines for scanning a touch screen; and detecting the bus coupling a plurality of detection lines that respectively interlace the scan lines, wherein the detection lines detect at least one touch position of the touch screen, wherein each detection line is coupled to the plurality of detection points, The detection points are corresponding to the scan lines; the plurality of single-conducting elements are respectively coupled between the detection points and the detection lines that are lightly connected to the detection points; the control unit is coupled to the scan bus and The detection bus is controlled to control the scanning bus and the detecting bus. Thus, the present invention eliminates ghost points by one of the detection lines 099143130 Form No. Α0101 Page 5/15 pages 0992074709-0 201128484 by means of a unidirectional conduction component. The phenomenon increases the efficiency of the touch panel. Furthermore, the unidirectional conduction component of the touch panel capable of eliminating ghost points of the present invention has a threshold value. When the voltage at the touch point is greater than the threshold value, detection is generated at one of the detection points located at the touch point. Signal. Thus, the present invention has a threshold value by using a one-way conduction element to confirm that the touch point is an actual touch point, thereby increasing the efficiency of the touch panel. [Embodiment] [0004] For a better understanding and understanding of the structural features and the efficacies of the present invention, the preferred embodiment and the detailed description are as follows: The second figure is a schematic structural view of a touch panel according to a preferred embodiment of the present invention. As shown in the figure, the touch panel 1 of the present invention can include a scanning busbar 10, a detecting busbar 20, a plurality of unidirectional components 30 and a control unit 40. The scan bus 10 is coupled to the plurality of scan lines 12 for scanning a touch screen. The detection bus 20 is coupled to the plurality of detection lines 22, and the detection lines 22 are respectively interleaved with the scan lines 12, and The detection lines 22 detect at least one touch position of the touch surface, wherein each detection line 22 is coupled to the plurality of detection points 24, and the detection points 24 are respectively corresponding to each other. The scan lines 12 are respectively coupled between the detection points 24 and the detection lines 22 coupled to the detection points 24 to allow the user to actually touch the touch points. When the detection line generates the detection signal to the control unit 40, the control unit

The SENSE 40 is coupled to the scan bus 10 and the detection bus 20 to control the scan bus 10 and the detection bus 20. As described above, the control unit 40 drives the touch panel 1 to drive the 099143130 form number A0101 page 6 / 15 pages 0992074709-0 201128484. The scan bus 10 generates a scan signal VIN, and sequentially transmits the scan signal. VIN to the scan lines 12, that is, the control unit 40 generates a control signal, and transmits a control signal to the scan bus 10, so that the scan bus 10 generates the scan signal vIN and transmits the scan from right to left or left to right. The signal vlN is sent to the scan lines 12. At this time, the control unit 40 detects the one of the detection lines 2 2 of the detection lines 2 2 by detecting the bus bar 20 to receive the detection signal 'or Some of the survey lines 22 of the survey line 22 receive the debt

SENSE

The test signal, so that the control unit 40 knows which scan line 12 the scan signal VTM SENSE IN is transmitted to, and the detection signal vSENSE is received by the detection line 22, and the touch point on the touch panel 1 is known. . In addition, the unidirectional conduction element 30 of the present invention may be a diode or a transistor, and the transistor may be a Bipolar Junction Transistor (BJT) or a Field Effect Transistor (FET). ). Furthermore, the scan lines 12 and the detection points 24 are a conductive film, and the conductive film is a transparent conductive oxide (TC0) film. Please refer to the third figure for the present invention. A schematic structural view of a detecting end of a preferred embodiment. As shown in the figure, the present invention is coupled between the detection points 24 and the detection lines 22 by the unidirectional conduction elements 30, that is, the detection points 24 are arranged in a row, and The detection points 24 are arranged in each column, and the detection points 24 are disposed at positions where the scan lines 12 are interlaced, and the single-conducting element 30 is disposed between the detection points 24 and the detection lines 22, and when the user When the detection point 24 is actually touched, the scan signal VIN is only transmitted by the single-pass element 30, so that the scan signal VIN is transmitted to the detection line 22 via the detection point 24, and the detection line 22 generates a detection signal. And transmit

SENSE 099143130 Form No. A0101 Page 7 of 15 0992074709-0 201128484 To the control unit 40, since the present invention corresponds to the scan lines 12 by the plurality of detection points 24, and the detection points There is no contact between the two, and the one-way conduction component 30 is coupled between the detection point 24 and the detection line 24, so when the user touches one of the detection points 24, the detection signal is generated and The detection point 2 4, the unidirectional conduction element 30 and the detection line 2 2 to the control unit 40, so that the control unit 40 knows the position of the touch point, and thus, the detection points 24 do not affect each other. In order to eliminate the ghost phenomenon, the efficiency of the touch panel 1 is increased. In addition, the distance between the detection points 24 is calculated, so that the user does not affect each other when touching the detection points 24. Furthermore, the unidirectional conduction element 30 has a threshold value. When the voltage at one of the touch points is greater than the threshold value, a detection signal is generated at one of the detection points 24 at the touch point. In this way, the embodiment can further confirm the detection point.

〇 L· JN 〇 L 24 is the actual touch point of the user. Please refer to the second figure. The following is an example for detecting a plurality of touch points of the touch panel 1 . In this embodiment, the scan lines 12 are disposed on the upper panel of the touch panel 1 . The weight measurement points 24 are disposed on the lower panel of the touch panel 1 . This is only a preferred embodiment of the present invention. Similarly, the scan lines 12 may be disposed on the lower surface of the touch panel 1 . The detection points 24 are disposed on the upper panel of the touch panel 1 . When the user touches the touch panel 1 at the same time, the touch point is a first touch point P1, a second touch SP2 and a third touch SP3. The control unit 40 generates a scan signal VIN, and sequentially transmits the scan signals to the scan lines 12 for scanning. When the scan signal vIN generated by the control unit 40 is transmitted to the scan line of the first touch point Pj, the first touch is performed. Touch? , the detection point 24 will generate a detection signal and is located at the first

1 SENSE touch point? The one-way conduction component 30 of 1 will be turned on, so that the voltage is turned on to detect 099143130 Form No. A0101 Page 8 / Total 15 Page 0992074709-0 201128484 Line 22, at this time, the voltage passes through the second touch point P/Temple due to scanning The signal VIN has not been transmitted to the second touch point? 2 scan line 12, so, located at the second touch point? The single conduction element 30 of the 2 is not conductive. In this embodiment, the single conduction element 30 uses a diode, and the N pole of the diode is coupled to the detection line 22, and the P pole of the diode is coupled. Connect to the detection point 24, therefore, at the second touch point? The single conduction element 30 of 2 cannot be turned on, and therefore the current path generated by the ghost point as described in the first figure cannot be generated, and since the virtual one fourth touch point P is not touched, there is no detection. The test signal 4 VSENSE is generated. Therefore, when the control unit 40 scans the touch screen of the entire touch panel 1, the position and number of the touch points can be correctly obtained, and no ghost points are generated. In summary, the touch panel of the present invention can be coupled to a plurality of scan lines by a scan bus to scan a touch screen, and a detection bus is coupled to the plurality of detection lines. The detection lines respectively interlace the scan lines, and the detection lines detect at least one touch position of the touch screen, wherein the detection lines are coupled to a plurality of detection points, and the detection points correspond to XK - IL wins P3 / — 4 ever »"Z. ***_ *N. rt.l >w* t«V on.»I_ /1: , nt cot wins the war and evaluates the world, the latter double Ping #通 7U 1 dry y 别 按 雄 雄 雄 雄 雄 雄 雄 雄 雄 雄 雄 雄 雄 雄 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Measure the bus. Thus, the present invention can eliminate ghost points and increase the efficiency of the touch panel. The present invention is a novelty, progressive, and available for industrial use, and should conform to the patent application requirements stipulated by the Chinese Patent Law.提出Proposing an application for a patent for invention in accordance with the law, and praying for a patent at an early date. However, the above description is only a preferred embodiment of the present invention, 099143130 Form No. A0101, page 9 / page 15 0992074709-0 201128484, and is not intended to limit the scope of the practice of the present invention. Equivalent changes and modifications of the shapes, configurations, features and spirits of the scope are intended to be included in the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [0005] The first figure is a schematic structural view of a touch panel of a prior art; the second figure is a schematic structural view of a touch panel according to a preferred embodiment of the present invention; and a third figure It is a schematic structural diagram of a detecting end of a preferred embodiment of the present invention. [Main component symbol description] [0006] Conventional technology • 10, scan bus 20, detection bus 30, control unit The present invention: 1 touch panel 10 scan bus 12 scan line 20 detection bus 22 detection Line 24 Detection point 30 One-way conduction element 40 Control unit 099143130 Form number A0101 Page 10/Total 15 page 0992074709-0

Claims (1)

201128484, VII, the scope of application for patents: 1. A touch panel capable of eliminating ghost points, comprising: a scanning bus, coupled with a plurality of scanning lines for scanning a touch surface; a detecting bus, coupling Detecting a plurality of detection lines, wherein the detection lines respectively interlace the scan lines, the detection lines detecting at least one touch position of the touch surface, each detection line being coupled to the plurality of detection points, The detection points correspond to the scan lines, and the plurality of single-channel conduction components are respectively coupled between the detection points and the detection lines coupled to the detection points; and a control unit coupled The scan bus and the detection bus are controlled to control the scan bus and the detection bus. 2. The touch panel capable of eliminating ghost points according to claim 1, wherein the control unit sequentially transmits a scan signal to the scan lines, and the detection is performed according to a touch point. One of the points generates a detection signal, and the control unit knows the position of the touch point according to the detection signal. 3. The touch panel capable of eliminating ghost points according to claim 2, wherein the one-way conduction component has a threshold value, and when one of the touch points has a voltage greater than the threshold value, the coupling is performed. One of the detection points connected to the touch point generates the detection signal. 4. The touch panel capable of eliminating ghost points according to claim 1, wherein the one-way conducting element is a diode or a transistor. 5 . The touch panel capable of eliminating ghost points according to claim 4, wherein the transistor is a Bipolar Junction Transistor (BJT) or a Field Effect Trans stor ( FET) 〇099143130 Form No. A0101 Page 11 of 15 0992074709-0 201128484) 6. The touch panel according to claim 1, wherein the scanning lines are a conductive film. 7 * A touch panel capable of eliminating ghost points as described in claim 6 wherein the conductive film is a transparent conductive oxide (TC0) film. 8. The touch panel capable of eliminating ghost points as described in claim 1, wherein the detection points are a conductive film. 9 ‘A touch panel capable of eliminating ghost points as described in claim 8 wherein the conductive thin layer is a transparent conductive oxide (TCO) film. 099143130 Form number A0101 Page 12 of 15 0992074709-0