CN119440294A - Panel driving device and panel driving method - Google Patents
Panel driving device and panel driving method Download PDFInfo
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- CN119440294A CN119440294A CN202311135494.XA CN202311135494A CN119440294A CN 119440294 A CN119440294 A CN 119440294A CN 202311135494 A CN202311135494 A CN 202311135494A CN 119440294 A CN119440294 A CN 119440294A
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Abstract
本发明提供一种面板驱动装置及面板驱动方法。面板驱动装置适用于具有电磁传感器以及触控感测兼显示层的面板结构。面板驱动装置包括电磁感测装置以及触控显示整合装置。电磁感测装置用于控制所述电磁传感器。触控显示整合装置直接耦接所述电磁感测装置，用于控制所述触控感测兼显示层。所述电磁感测装置在电磁感测期间使能阻断信号至所述触控显示整合装置。所述触控显示整合装置依据所述阻断信号的使能期间来禁能所述触控感测兼显示层的触控感测。所述电磁感测装置在所述电磁感测期间使能所述电磁传感器的电磁感测。
The present invention provides a panel driving device and a panel driving method. The panel driving device is suitable for a panel structure having an electromagnetic sensor and a touch sensing and display layer. The panel driving device includes an electromagnetic sensing device and a touch display integration device. The electromagnetic sensing device is used to control the electromagnetic sensor. The touch display integration device is directly coupled to the electromagnetic sensing device and is used to control the touch sensing and display layer. The electromagnetic sensing device enables a blocking signal to the touch display integration device during electromagnetic sensing. The touch display integration device disables touch sensing of the touch sensing and display layer according to the enabling period of the blocking signal. The electromagnetic sensing device enables electromagnetic sensing of the electromagnetic sensor during the electromagnetic sensing period.
Description
Technical Field
The present invention relates to a panel driving technology with touch and electromagnetic sensing functions, and more particularly, to a panel driving device and a panel driving method.
Background
At present, input devices of consumer electronic products are mainly touch panels, and some products also use touch pens as another input device. The finger-operated electronic product is intuitive and convenient, but is not suitable for all use occasions. If the content needs to be input or is wanted to be input accurately under the condition that the electronic product panel is small, the content can be input conveniently in a writing mode by using the touch pen.
On the other hand, as the miniaturization of panels has progressed, many devices provided on the panels have been studied toward a mutual integration. However, the display screen, the touch panel and the touch pen sensing module on the panel may be too close to each other to cause mutual interference, the touch point is dithered due to light touch, and the touch pen is broken when drawing lines, the touch is insensitive, etc. due to heavy touch. Therefore, how to make the display screen, the touch panel and the touch pen sensing module operate normally even when the distance between them is very close is one of the research directions.
Disclosure of Invention
The invention is directed to a panel driving device and a panel driving method, which adopt time sequence multiplexing to avoid touch sensing and electromagnetic sensing from running in the same time period, thereby avoiding mutual interference of the touch sensing and the electromagnetic sensing.
According to the embodiment of the invention, the panel driving device is suitable for a panel structure with an electromagnetic sensor and a touch sensing and displaying layer. The panel driving device comprises an electromagnetic sensing device and a touch display integration device. The electromagnetic sensing device is used for controlling the electromagnetic sensor. The touch display integration device is directly coupled with the electromagnetic sensing device and is used for controlling the touch sensing and display layer. The electromagnetic sensing device enables blocking signals to the touch display integration device during electromagnetic sensing. The touch display integration device disables touch sensing of the touch sensing and display layer according to the enabling period of the blocking signal. The electromagnetic sensing device enables electromagnetic sensing of the electromagnetic sensor during the electromagnetic sensing.
According to the embodiment of the invention, the panel driving method is suitable for a panel structure with an electromagnetic sensor and a touch sensing and displaying layer. The panel driving method includes enabling a blocking signal during electromagnetic sensing, disabling touch sensing of the touch sensing and display layer according to the enabling period of the blocking signal, and enabling electromagnetic sensing of the electromagnetic sensor during the electromagnetic sensing.
Based on the above, the panel driving device and the panel driving method according to the embodiments of the present invention actively provide the blocking signal to the touch display integration device during the electromagnetic sensing period by using the electromagnetic sensing device in the panel driving device, so that the touch display integration device disables the touch sensing during the electromagnetic sensing period, and thus, the time sequence multiplexing is adopted to avoid the touch sensing and the electromagnetic sensing from operating in the same period, thereby avoiding the mutual interference of the touch sensing and the electromagnetic sensing.
Drawings
FIG. 1 is a schematic view of a panel structure according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a panel driving apparatus according to an embodiment of the present invention;
FIG. 3 is a flow chart of a panel driving method according to an embodiment of the invention;
Fig. 4 is a schematic diagram of signals corresponding to a panel and a panel driving device according to an embodiment of the invention.
Description of the reference numerals
110A, 110B panel structure
112 Glass layer
114 Touch panel
115. 117 Polarizing plate
116-1 Liquid crystal display layer
116-2 Touch sensing and display layer
118 Backlight module
119 Electromagnetic sensor layer
200 Panel driving device
210 Host device
220 Touch display integration device
230 Electromagnetic sensing device
S310-S370 steps of panel driving method
410-480 Arrow
Dframe 1A 1, dframe A display frame
DG 11-DG 13, DG 21-DG 23, display group
TE touch Enable period
TDdis touch disable period
DDrv display period
DPenS proximity detection Signal
Sdis blocking signals
TP1, TP2: time Point
EMREN electromagnetic sensing period
TIS touch interrupt Signal
TSS touch sensing signal
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
FIG. 1 is a schematic view of a panel structure according to an embodiment of the invention. Two panel structures 110A and 110B are provided in fig. 1. The panel structure 110A of FIG. 1 includes a glass layer 112, a touch panel 114, polarizers 115 and 117, a liquid crystal display layer 116-1, a backlight module 118, and an electromagnetic sensor (EMR) layer 119. The touch panel 114 may be a capacitive touch panel, and a user may input information of only electronic products through the touch panel 114 by fingers. The polarizers 115 and 117, the liquid crystal display layer 116-1, and the backlight module 118 serve as display screens of the electronic product. The electromagnetic sensor layer 119 is used for sensing approaching, touching and separating of the stylus or the corresponding touch component, so as to realize information input of the stylus or the touch component.
Since the distance D1 between the touch panel 114 and the electromagnetic sensor layer 119 in fig. 1 is large, there is no interference between the two. With the development of the technology, the touch panel 114 and the liquid crystal display layer 116-1 in the panel structure 110A of fig. 1 can be mutually integrated into the touch sensing and displaying layer 116-2 in the panel structure 110B of fig. 1, so that the panel is thinned as a whole, but the distance D2 between the touch sensing and displaying layer 116-2 and the electromagnetic sensor layer 119 of fig. 1 is further shortened, which results in the mutual interference between the touch sensing and displaying layer 116-2 and the electromagnetic sensor layer 119. Like numbered elements of the panel structures 110A and 110B of fig. 1 serve the same function.
The touch sensing and display layer 116-2 is controlled by a touch display integration device (e.g., touch panel integration (display integration, TDDI) chip), and the electromagnetic sensor layer 119 is controlled by an electromagnetic sensing device, which are not in communication with each other.
Therefore, in the embodiments of the present invention, a communication channel is established between the touch display integration device and the electromagnetic sensing device, so that the electromagnetic sensing device can signal the touch display integration device by using a signal, so that the touch display integration device knows when the electromagnetic sensing device starts and ends the electromagnetic sensing of the touch pen, and at the moment, the touch display integration device pauses its own touch sensing function, thereby avoiding the mutual interference of the two functions of the electromagnetic sensing and the touch sensing. Examples consistent with the present invention are set forth below for reference.
Fig. 2 is a schematic diagram of a panel driving apparatus 200 according to an embodiment of the invention. The panel driving device 200 is suitable for a panel structure having an electromagnetic sensor and a touch sensing and display layer, such as the panel structure 110B of fig. 1. The panel driving device 200 is coupled to a panel to be driven correspondingly to implement the embodiment of the present invention. The panel driving device 200 includes a host device 210, a touch display integration device 220, and an electromagnetic sensing device 230. The host device 210 is coupled to the electromagnetic sensing device 230 and the touch display integration device 220. The host device 210 is used for maintaining the operation of the panel driving device 200. The host device 210 of the present embodiment may be a motherboard of a consumer electronic device (e.g., tablet device, portable computer, cell phone), a central processor.
In some embodiments, the host device 210 may not have enough computation power and the overall system may be unstable, and if the driving method of the embodiment of the invention is implemented by the host device 210, the switching is not real-time, and the writing experience of the user is impaired due to a pause, so that the embodiment of the invention mainly uses the electromagnetic sensing device 230 of fig. 2 to directly implement the timing multiplexing on the blocking signal Sdis provided by the touch display integration device 220.
The touch display integration device 220 is directly coupled to the electromagnetic sensing device 230. The touch display integration device 220 is used to control a touch sensing and display layer (e.g., the touch sensing and display layer 116-2 in fig. 1) in the panel structure. The electromagnetic sensing device 230 is used to control an electromagnetic sensor (e.g., electromagnetic sensor layer 119 of fig. 1) in a panel structure. The touch display integration device 220 may be implemented by a touch panel integration (TDDI) chip.
The electromagnetic sensing device 230 of the present embodiment is directly coupled to the touch display integration device 220 by using general purpose input/output (GPIO) pins. The electromagnetic sensing device 230 provides the blocking signal Sdis of the present embodiment to the touch display integration device 220 by using the general-purpose input/output pins.
The electromagnetic sensing device 230 enables the blocking signal Sdis to the touch display integration device 220 during electromagnetic sensing. The touch display integration device disables touch sensing of the touch sensing and display layer according to the enabling period of the blocking signal Sdis. Also, the electromagnetic sensing device 230 enables electromagnetic sensing of the electromagnetic sensor during the aforementioned electromagnetic sensing. Thus, time multiplexing can be used to avoid touch sensing controlled by the touch display integration device 220 and electromagnetic sensing controlled by the electromagnetic sensing device 230 from operating in the same time period. The detailed panel driving method and the corresponding signals in the panel driving apparatus 200 are shown in fig. 3 and 4, so that the driver can understand the present embodiment more.
Fig. 3 is a flowchart of a panel driving method according to an embodiment of the present invention. Fig. 4 is a schematic diagram of signals corresponding to a panel and a panel driving device according to an embodiment of the invention. Fig. 3 and 4 may be implemented by the panel driving device 200 of fig. 2. For the detailed description of the present embodiment, steps S310, S320, S330, S350 and S360 in fig. 3 are performed by the electromagnetic sensing device 230 in fig. 2, and steps S340, S3450 and S370 in fig. 3 are performed by the touch display integration device 220 in fig. 2.
Here, the first three courses of fig. 4 are explained. The first three rows of FIG. 4 represent the actions of multiple display frames, display groups, and touch sensing and display layers. Each display frame includes more than one group of display groups, for example, display frame Dframe includes three display groups DG11, DG12, and DG13, and display frame Dframe includes three display groups DG21, DG22, and DG23. Each display group comprises more than one group of touch time periods and display time periods DDrv. The touch time periods planned in one display group can be divided into a touch enabled time period TE and a touch disabled time period TDdis. In the touch enabling period TE, the touch display integration device 220 of FIG. 2 detects the touch position of the finger through the touch sensing and displaying layer 116-2 of FIG. 1 and sends a corresponding coordinate command to the host device 210, which is "touch sensing". On the other hand, in the touch disable period TDdis, the touch display integration device 220 of fig. 2 suspends the touch sensing due to the enabling of the touch interrupt signal TIS and stops sending the coordinate command to the host device 210.
Referring to fig. 2, 3 and 4, in step S310, the electromagnetic sensor 230 detects whether the stylus or the corresponding touch device is in the sensing range of the panel structure (e.g. the panel structure 10B of fig. 1) according to the electromagnetic sensor in the panel structure, so as to enable the proximity detection signal dPenS. In the present embodiment, the electromagnetic sensor 230 enables the proximity detection signal dPenS when the stylus or the corresponding touch component approaches the writing range of the panel structure (e.g., both approach 5 to 25 millimeters (mm)).
In step S320, when the proximity detection signal dPenS is enabled, the electromagnetic sensing device 230 of fig. 2 enters the electromagnetic sensing period EMREN and enables the blocking signal Sdis (as indicated by the arrow 410). In step S330, the electromagnetic sensing device 230 of fig. 2 enables electromagnetic sensing of the electromagnetic sensor (as indicated by arrow 420 in fig. 4 and the last row in fig. 4) after a first delay period (e.g., 100 ms) has elapsed at a start time point TP1 of the electromagnetic sensing period. The first delay period (100 ms) is set because the early electromagnetic sensing is prevented from being disturbed by touch sensing, and the sensing of the stylus is easy to shift.
In another convenience, in step S340, the touch display integration device 220 of fig. 2 enables the touch interrupt signal TIS (as indicated by arrow 430) after receiving the enabled blocking signal Sdis, and disables the touch sensing of the touch sensing and displaying layer (as indicated by arrows 440-1 to 440-4) in step S345. The touch sensing is to replace the touch sensing and displaying layer with the touch disabling period TDdis from the original touch enabling period TE, and the touch sensing signal TSS is turned from enabling to disabling. In other words, the touch sensing and display layer is otherwise controlled to alternately perform display driving (i.e., display period DDrv) and touch sensing (i.e., touch enable period TE). During the enabling of the blocking signal Sdis, the display driving (display period DDrv) is still performed, but the period of touch sensing is shifted from enabling (touch enabling period TE) to disabled (touch disabling period TDdis).
When the stylus or corresponding touch component is away from the sensing range of the electromagnetic sensor in the panel structure, the electromagnetic sensor 230 disables the proximity detection signal dPenS (step S350), ends the electromagnetic sensing period EMRE and disables the blocking signal Sdis (step S355) (as indicated by arrow 450).
When the blocking signal Sdis is disabled, in step S360, the electromagnetic sensing device 230 of fig. 2 disables electromagnetic sensing of the electromagnetic sensor at a time point TP2 when the blocking signal dPenS is enabled to be disabled (as indicated by an arrow 460). In step S370, the touch display integration device 220 of fig. 2 switches the touch interrupt signal TIS from enabled to disabled (as indicated by arrow 470) after a second delay period (e.g., 50 ms) elapses at the time point TP2 when the enable is switched to disabled in the blocking signal dPenS, and switches the touch sense signal TSS from disabled to enabled (as indicated by arrow 480) to resume the enabling of the touch sensing. The second delay period (50 ms) is set to let touch sensing start again to ensure that no interference is caused by system delay. After the steps S360 and S370 in fig. 3 are completed, the process returns to step S310.
In summary, the panel driving device and the panel driving method according to the embodiments of the invention actively provide the blocking signal to the touch display integration device during the electromagnetic sensing period by using the electromagnetic sensing device in the panel driving device, so that the touch display integration device disables the touch sensing during the electromagnetic sensing period, thereby adopting the time sequence multiplexing to avoid the touch sensing and the electromagnetic sensing from operating in the same period, and avoiding the mutual interference of the touch sensing and the electromagnetic sensing.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW112128907A TWI850048B (en) | 2023-08-01 | 2023-08-01 | Panel driving device and panel driving method |
| TW112128907 | 2023-08-01 |
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| Publication Number | Publication Date |
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| CN119440294A true CN119440294A (en) | 2025-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311135494.XA Pending CN119440294A (en) | 2023-08-01 | 2023-09-05 | Panel driving device and panel driving method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090267905A1 (en) * | 2008-04-26 | 2009-10-29 | Chung-Wen Hsu | Cursor Input Device With Dual Input Modes |
| CN101957683B (en) * | 2010-10-08 | 2012-09-05 | 汉王科技股份有限公司 | Dual-mode input device and dual-mode input method |
| TWI576746B (en) * | 2010-12-31 | 2017-04-01 | 劉鴻達 | Dual-mode touch sensor display |
| TWI455004B (en) * | 2011-12-20 | 2014-10-01 | Wistron Corp | Touch display panel and driving method thereof |
| CN104571772A (en) * | 2013-10-12 | 2015-04-29 | 上海和辉光电有限公司 | Electromagnetic touch control screen structure |
| CN217113263U (en) * | 2022-04-12 | 2022-08-02 | 杨艳梅 | Electromagnetic touch screen |
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- 2023-08-01 TW TW112128907A patent/TWI850048B/en active
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