TWI603253B - Embedded self-capacitance touch display device and water detection method - Google Patents
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Description
本發明涉及觸控螢幕控制領域，特別是涉及一種內嵌式自容觸控顯示裝置及水檢測方法。 The present invention relates to the field of touch screen control, and in particular to an in-cell self-capacitive touch display device and a water detecting method.
自容屏由於檢測的是各通道自身的對地電容，故對孤立水是不會有任何觸摸變化量的，即使有水時觸摸螢幕其它地方不會有影響，如圖1和圖2所示，在現有的掃描中，一個掃描週期內有兩個掃描幀，但是在自容屏上有水滴時，無法檢測到水滴的位置，但手指在水上觸摸時，與手指連通的水會形成一個等勢面，使得觸控面積比真實的手指要大，降低控制精准度。 Since the self-capacitor screen detects the capacitance of each channel to the ground, there is no change in the amount of touch on the isolated water. Even if there is water, touching the screen will not affect other places, as shown in Figure 1 and Figure 2. In the existing scan, there are two scan frames in one scan period, but when there is water droplet on the self-capacity screen, the position of the water drop cannot be detected, but when the finger touches on the water, the water connected with the finger forms an equal The potential surface makes the touch area larger than the real finger and reduces the control precision.
本發明的目的是提供一種內嵌式自容觸控顯示裝置及水檢測方法，提高了帶水操作的精確度。 An object of the present invention is to provide an in-cell self-capacitive touch display device and a water detecting method, which improve the accuracy of the water-carrying operation.
為解決上述技術問題，本發明實施例提供了一種內嵌式自容觸控顯示裝置水檢測方法，包括：將全螢幕所有列通道分為多組分通道，對分通道進行觸控掃描，每組分通道包括至少一列通道，每個掃描週期包括正常觸控掃描幀和水檢測掃描幀。正常觸控掃描幀和水檢測掃描幀分別 設定有觸控基準值，比較每個掃描週期採集到的正常觸控掃描幀資料和水檢測掃描幀資料相對各自設定觸控基準值的變化量。正常觸摸狀態下，正常觸控掃描幀資料和水檢測掃描幀資料相對各自觸控基準值的變化量均大於閾值。存在孤立水滴狀態下，被水覆蓋的分通道的正常觸控掃描幀資料相對已設定觸控基準值的產生的變化量小於水檢測掃描幀資料相對已設定觸控基準值產生的變化量。對被水覆蓋的分通道的電容值資料進行處理，去除水滴對被水覆蓋的分通道的電容值的干擾。 In order to solve the above technical problem, an embodiment of the present invention provides a water detecting method for an in-cell self-capacitive touch display device, which comprises: dividing all column channels of a full screen into multi-component channels, and performing touch scanning on each sub-channel. The component channel includes at least one column of channels, and each scan period includes a normal touch scan frame and a water detection scan frame. Normal touch scan frame and water detection scan frame respectively The touch reference value is set, and the change amount of the normal touch scan frame data and the water detection scan frame data collected in each scan period is compared with respect to the respective set touch reference values. In the normal touch state, the amount of change between the normal touch scan frame data and the water detection scan frame data relative to the respective touch reference values is greater than the threshold. In the case of the isolated water droplets, the amount of change in the normal touch scan frame data of the sub-channel covered by the water relative to the set touch reference value is smaller than the change amount of the water detection scan frame data relative to the set touch reference value. The capacitance value data of the sub-channel covered by water is processed to remove the interference of the water droplets on the capacitance value of the sub-channel covered by water.
其中，正常觸控掃描幀為對所有分通道進行的觸控掃描，水檢測掃描幀為對分通道進行的間隔掃描，即任意相鄰的兩個分通道中，一個分通道進行正常觸控掃描，另一個分通道接地。 The normal touch scan frame is a touch scan for all sub-channels, and the water detection scan frame is an interval scan for the sub-channels, that is, one of the adjacent two sub-channels and one sub-channel for normal touch scanning. The other sub-channel is grounded.
如上所述的內嵌式自容觸控顯示裝置水檢測方法，於一實施例中，每個掃描週期包括兩個正常觸控掃描幀和一個水檢測掃描幀。 In the embodiment, the in-cell self-capacitive touch display device water detecting method comprises, in an embodiment, each of the scan periods includes two normal touch scan frames and one water detection scan frame.
如上所述的內嵌式自容觸控顯示裝置水檢測方法，於一實施例中，每個掃描週期為兩個正常觸控掃描幀完成後再進行一個水檢測掃描幀。 In the embodiment, the water detecting method of the in-cell self-capacitive touch display device is as follows. In one embodiment, one water detecting scanning frame is performed after each of the two normal touch scanning frames is completed.
如上所述的內嵌式自容觸控顯示裝置水檢測方法，於一實施例中，水檢測掃描幀在兩個正常觸控掃描幀之間。 In the embodiment of the present invention, the water detecting scanning frame is between two normal touch scanning frames.
如上所述的內嵌式自容觸控顯示裝置水檢測方法，於一實施例中，至少一個水檢測掃描幀位於相鄰兩個正常觸控掃描幀之間。 In the embodiment, the at least one water detection scan frame is located between two adjacent normal touch scan frames.
如上所述的內嵌式自容觸控顯示裝置水檢測方法，於一實施例中，每個掃描週期還包括二次水檢測掃描幀，第二次水檢測掃描幀關閉 的分通道為第一次水檢測掃描幀的正常觸控掃描通道。 In the embodiment, the embedded self-capacitive touch display device water detecting method, in one embodiment, each scan period further includes a secondary water detection scan frame, and the second water detection scan frame is closed. The sub-channel is the normal touch scanning channel of the first water detection scan frame.
如上所述的內嵌式自容觸控顯示裝置水檢測方法，於一實施例中，第一次水檢測掃描幀為偶數分通道內部接地後對奇數分通道進行的掃描，第二次水檢測掃描幀為奇數分通道接地後對偶數分通道進行的掃描。 In the embodiment, the first self-capacitance touch display device water detecting method, in one embodiment, the first water detecting scanning frame is an even-numbered channel internal grounding and then scanning the odd-numbered sub-channels, and the second water detecting is performed. The scan frame is a scan of the even sub-channel after the odd-numbered channel is grounded.
如上所述的內嵌式自容觸控顯示裝置水檢測方法，於一實施例中，多組分通道的列通道數量相等。 In the embodiment, the in-cell self-capacitive touch display device water detecting method, in one embodiment, the number of column channels of the multi-component channel is equal.
除此之外，本發明實施例還提供了一種內嵌式自容觸控顯示裝置，包括：掃描模組以及資料分析模組。 In addition, the embodiment of the invention further provides an embedded self-capacitive touch display device, comprising: a scanning module and a data analysis module.
掃描模組用於對指定螢幕的分通道進行掃描，一個掃描週期包括正常觸控掃描幀和水檢測掃描幀。正常觸控掃描幀和水檢測掃描幀分別設定有觸控基準值，所述資料分析模組比較每個掃描週期採集到的正常觸控掃描幀資料和水檢測掃描幀資料相對各自設定觸控基準值的變化量。正常觸摸狀態下，正常觸控掃描幀資料和水檢測掃描幀資料相對各自觸控基準值的變化量均大於閾值。存在孤立水滴狀態下，被水覆蓋的分通道的正常觸控掃描幀資料相對已設定觸控基準值的產生的變化量小於水檢測掃描幀資料相對已設定觸控基準值產生的變化量。資料分析模組對被水覆蓋的分通道的電容值資料進行處理，去除水滴對被水覆蓋的分通道的電容值的干擾。 The scanning module is used to scan the sub-channels of the specified screen, and one scanning period includes a normal touch scanning frame and a water detecting scanning frame. The normal touch scan frame and the water detection scan frame are respectively set with a touch reference value, and the data analysis module compares the normal touch scan frame data and the water detection scan frame data collected in each scan period with respect to the respective set touch reference values. The amount of change in value. In the normal touch state, the amount of change between the normal touch scan frame data and the water detection scan frame data relative to the respective touch reference values is greater than the threshold. In the case of the isolated water droplets, the amount of change in the normal touch scan frame data of the sub-channel covered by the water relative to the set touch reference value is smaller than the change amount of the water detection scan frame data relative to the set touch reference value. The data analysis module processes the capacitance value data of the sub-channel covered by the water to remove the interference of the water droplets on the capacitance value of the sub-channel covered by the water.
其中，正常觸控掃描幀為對所有分通道進行的掃描，水檢測掃描幀為對分通道進行的間隔掃描，即任意相鄰的兩個分通道中，一個分 通道進行正常觸控掃描，另一個分通道接地。 The normal touch scan frame is a scan for all sub-channels, and the water detection scan frame is an interval scan for the sub-channel, that is, one of any two adjacent sub-channels The channel performs normal touch scanning and the other sub-channel is grounded.
如上所述的內嵌式自容觸控顯示裝置，於一實施例中，還包括掃描控制模組，用於分配分通道所包含的列通道的數量和控制相應的分通道的閉合和開啟。 In one embodiment, the in-cell self-capacitive touch display device further includes a scan control module for allocating the number of column channels included in the sub-channel and controlling the closing and opening of the corresponding sub-channel.
本發明實施例所提供的內嵌式自容觸控顯示裝置以及水檢測方法，與現有技術相比較，具有以下優點：內嵌式自容觸控顯示裝置以及水檢測方法，透過在正常的掃描週期中添加水檢測掃描幀，水檢測掃描幀時讓一部分分通道接地之後，實現對另一部分通道對水的有效檢測，透過對比分通道接地前後電容值的變化，判斷是分通道否為有水狀態。透過水檢測掃描幀獲得準確的有水狀態，然後再對資料進行後處理，以提高帶水操作的準確度。 Compared with the prior art, the in-cell self-capacitive touch display device and the water detecting method provided by the embodiments of the present invention have the following advantages: an in-cell self-capacitive touch display device and a water detecting method, through normal scanning The water detection scan frame is added in the cycle, and after the water detection scanning frame is grounded, a part of the sub-channel is grounded, and the water of another part of the channel is effectively detected. By comparing the change of the capacitance value before and after the grounding of the sub-channel, it is determined whether the sub-channel is water or not. status. The water detection scan frame is used to obtain an accurate water state, and then the data is post-processed to improve the accuracy of the water operation.
綜上所述，本發明實施例提供的內嵌式自容觸控顯示裝置以及水檢測方法，透過增加水檢測掃描幀，提高了帶水操作的準確度。 In summary, the in-cell self-capacitive touch display device and the water detecting method provided by the embodiments of the present invention improve the accuracy of the water-carrying operation by increasing the water detection scan frame.
為了更清楚地說明本發明實施例或現有技術中的技術方案，下面將對實施例或現有技術描述中所需要使用的圖式作簡單地介紹，顯而易見地，下面描述中的圖式是本發明的一些實施例，對於所屬領域具通常知識者而言，以一般知識及普通技能，還可以根據這些圖式獲得其他的圖式。 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are the present invention. Some embodiments of the present invention, as well as those of ordinary skill in the art, may also obtain other drawings based on the general knowledge and common skill.
SX1、SX2‧‧‧通道 SX1, SX2‧‧‧ channels
C1、C2、C3‧‧‧電容 C1, C2, C3‧‧‧ capacitors
步驟10~30‧‧‧內嵌式自容觸控顯示裝置水檢測方法步驟 Step 10~30‧‧‧In-line self-capacitive touch display device water detection method steps
10‧‧‧掃描模組 10‧‧‧ scan module
20‧‧‧資料分析模組 20‧‧‧Data Analysis Module
[圖1]為現有技術中的觸控顯示掃描波形示意圖。 FIG. 1 is a schematic diagram of a touch display scan waveform in the prior art.
[圖2]為現有技術中的有水滴時觸控掃描時的部分列通道的電容值列表。 [Fig. 2] is a list of capacitance values of partial column channels in the case of touch scanning with water droplets in the prior art.
[圖3]為本發明實施例中的相鄰兩個通道上有水滴時的電路結構示。 Fig. 3 is a circuit diagram showing the structure of water droplets on two adjacent channels in the embodiment of the present invention.
[圖4]為本發明實施例中進行水檢測時的分通道的等效電路示意圖。 4 is a schematic diagram showing an equivalent circuit of a sub-channel when water detection is performed in an embodiment of the present invention.
[圖5]為本發明實施例所提供的內嵌式自容觸控顯示裝置水檢測方法中的觸控顯示掃描波形示意圖。 FIG. 5 is a schematic diagram of a touch display scan waveform in a water detecting method of an in-cell self-capacitive touch display device according to an embodiment of the present invention.
[圖6]為本發明實施例中提供的內嵌式自容觸控顯示裝置水檢測方法中在一次水檢測掃描時的部分通道的電容值。 6 is a capacitance value of a part of a channel during a water detection scan in the water detecting method of the in-cell self-capacitive touch display device according to an embodiment of the present invention.
[圖7]為本發明實施例所提供的內嵌式自容觸控顯示裝置水檢測方法的一種具體實施方式的步驟流程示意圖。 FIG. 7 is a flow chart showing the steps of a specific embodiment of a water detecting method for an in-cell self-capacitive touch display device according to an embodiment of the present invention.
[圖8]為本發明實施例所提供的內嵌式自容觸控顯示裝置水檢測方法中正常觸摸時的某一單通道的電容資料圖。 FIG. 8 is a capacitance data diagram of a single channel when a normal touch is detected in a water detecting method of an in-cell self-capacitive touch display device according to an embodiment of the present invention.
[圖9]為本發明實施例所提供的內嵌式自容觸控顯示裝置水檢測方法中有水滴時的某一單通道的電容資料圖。 FIG. 9 is a diagram showing a capacitance data of a single channel when there is a water drop in the water detecting method of the in-cell self-capacitive touch display device according to an embodiment of the present invention.
[圖10]為本發明實施例所提供的內嵌式自容觸控顯示裝置的部件連接示意圖。 FIG. 10 is a schematic diagram of component connections of an in-cell self-capacitive touch display device according to an embodiment of the present invention.
[圖11]為本發明實施例所提供的內嵌式自容觸控顯示裝置的工作模式的步驟流程圖。 FIG. 11 is a flow chart showing steps of an operation mode of an in-cell self-capacitive touch display device according to an embodiment of the present invention.
[圖12]為本發明實施例所提供的內嵌式自容觸控顯示裝置使用軟體進行水滴處理的邏輯步驟示意圖。 FIG. 12 is a schematic diagram showing the logic steps of the in-line self-capacitive touch display device using the software for water droplet processing according to an embodiment of the present invention.
[圖13]為本發明實施例所提供的內嵌式自容觸控顯示裝置在使用軟 體進行去除水滴干擾的步驟示意圖。 FIG. 13 is a soft view of an in-cell self-capacitive touch display device according to an embodiment of the present invention. A schematic diagram of the steps of removing the water droplets from the body.
[圖14]為多個本發明實施例所提供的內嵌式自容觸控顯示裝置在螢幕上的另一種位置關係示意圖。 FIG. 14 is a schematic diagram showing another positional relationship of the in-cell self-capacitive touch display device provided on the screen according to the embodiment of the present invention.
[圖15]為多個本發明實施例所提供的內嵌式自容觸控顯示裝置在螢幕上的另一種位置關係示意圖。 FIG. 15 is a schematic diagram showing another positional relationship of the in-cell self-capacitive touch display device provided on the screen according to the embodiment of the present invention.
正如先前技術的部分所述，現有技術中內嵌式自電容屏由於檢測的是各通道自身的對地電容，故對孤立水是不會有任何觸摸變化量的，即使有水時觸控式螢幕幕其它地方不會有影響，但手指在水上觸摸時，與手指連通的水會形成一個等勢面，使得觸控面積比真實的手指要大，降低控制精準度。 As described in the prior art, the embedded self-capacitive screen in the prior art detects the capacitance of each channel to the ground, so there is no change in the amount of touch on the isolated water, even when there is water. There will be no influence on other parts of the screen, but when the finger touches on the water, the water connected with the finger will form an equipotential surface, which makes the touch area larger than the real finger and reduces the control precision.
基於此，本發明實施例提供了一種內嵌式自容觸控顯示裝置水檢測方法，包括：將全螢幕所有列通道分為多組分通道，對分通道進行觸控掃描，每組分通道包括至少一列通道，每個掃描週期包括正常觸控掃描幀和水檢測掃描幀。 Based on this, an embodiment of the present invention provides a water detecting method for an in-cell self-capacitive touch display device, which comprises: dividing all column channels of a full screen into multi-component channels, and performing touch scanning on each sub-channel, each component channel The system includes at least one column of channels, and each scan period includes a normal touch scan frame and a water detection scan frame.
正常觸控掃描幀和水檢測掃描幀分別設定有觸控基準值，比較每個掃描週期採集到的正常觸控掃描幀資料和水檢測掃描幀資料相對各自設定觸控基準值的變化量。正常觸摸狀態下，正常觸控掃描幀資料和水檢測掃描幀資料相對各自觸控基準值的變化量均大於閾值。存在孤立水滴狀態下，被水覆蓋的分通道的正常觸控掃描幀資料相對已設定觸控基準 值的產生的變化量小於水檢測掃描幀資料相對已設定觸控基準值產生的變化量。 The normal touch scan frame and the water detection scan frame respectively set a touch reference value, and compare the change amount of the normal touch scan frame data and the water detection scan frame data collected in each scan period with respect to the respective set touch reference values. In the normal touch state, the amount of change between the normal touch scan frame data and the water detection scan frame data relative to the respective touch reference values is greater than the threshold. In the case of isolated water droplets, the normal touch scan frame data of the sub-channel covered by water is relatively set with the touch reference The amount of change in the value generated is less than the amount of change in the water detection scan frame data relative to the set touch reference value.
對被水覆蓋的分通道的電容值資料進行處理，去除水滴對被水覆蓋的分通道的電容值的干擾。 The capacitance value data of the sub-channel covered by water is processed to remove the interference of the water droplets on the capacitance value of the sub-channel covered by water.
其中，正常觸控掃描幀為對所有分通道進行的觸控掃描，水檢測掃描幀為對分通道進行的間隔掃描，即任意相鄰的兩個分通道中，一個分通道進行正常觸控掃描，另一個分通道接地。 The normal touch scan frame is a touch scan for all sub-channels, and the water detection scan frame is an interval scan for the sub-channels, that is, one of the adjacent two sub-channels and one sub-channel for normal touch scanning. The other sub-channel is grounded.
除此之外，本發明實施例提供了一種內嵌式自容觸控顯示裝置，包括：掃描模組以及資料分析模組。 In addition, an embodiment of the present invention provides an in-cell self-capacitive touch display device, including: a scanning module and a data analysis module.
掃描模組用於對指定螢幕的分通道進行掃描，一個掃描週期包括正常觸控掃描幀和水檢測掃描幀。 The scanning module is used to scan the sub-channels of the specified screen, and one scanning period includes a normal touch scanning frame and a water detecting scanning frame.
正常觸控掃描幀和水檢測掃描幀分別設定有觸控基準值，資料分析模組比較每個掃描週期採集到的正常觸控掃描幀資料和水檢測掃描幀資料相對各自設定觸控基準值的變化量。正常觸摸狀態下，正常觸控掃描幀資料和水檢測掃描幀資料相對各自觸控基準值的變化量均大於閾值。存在孤立水滴狀態下，被水覆蓋的分通道的正常觸控掃描幀資料相對已設定觸控基準值的產生的變化量小於水檢測掃描幀資料相對已設定觸控基準值產生的變化量。資料分析模組對被水覆蓋的分通道的電容值資料進行處理，去除水滴對被水覆蓋的分通道的電容值的干擾。 The normal touch scan frame and the water detection scan frame are respectively set with a touch reference value, and the data analysis module compares the normal touch scan frame data and the water detection scan frame data collected in each scan period with respect to the respective set touch reference values. The amount of change. In the normal touch state, the amount of change between the normal touch scan frame data and the water detection scan frame data relative to the respective touch reference values is greater than the threshold. In the case of the isolated water droplets, the amount of change in the normal touch scan frame data of the sub-channel covered by the water relative to the set touch reference value is smaller than the change amount of the water detection scan frame data relative to the set touch reference value. The data analysis module processes the capacitance value data of the sub-channel covered by the water to remove the interference of the water droplets on the capacitance value of the sub-channel covered by the water.
其中，正常觸控掃描幀為對所有分通道進行的掃描，水檢測掃描幀為對分通道進行的間隔掃描，即任意相鄰的兩個分通道中，一個分 通道進行正常觸控掃描，另一個分通道接地。 The normal touch scan frame is a scan for all sub-channels, and the water detection scan frame is an interval scan for the sub-channel, that is, one of any two adjacent sub-channels The channel performs normal touch scanning and the other sub-channel is grounded.
需要說明的是，本發明實施例中的水檢測掃描幀可為部分分通道接地後對其它分通道進行的掃描，具體是指奇數分通道對地短路後，對偶數分通道實現的有水檢測。也可為偶數分通道對地短路後，對奇數分通道實現的有水檢測。 It should be noted that the water detection scan frame in the embodiment of the present invention may be a scan of the other sub-channels after the partial sub-channels are grounded, and specifically, the water detection is performed on the even-numbered sub-channels after the odd-numbered sub-channels are short-circuited to the ground. . It is also possible to detect water for an odd-numbered channel after the even-numbered channel is short-circuited to ground.
如圖3所示，通道SX1的自身對地電容為C1，通道SX2對地的電容為C2，在通道SX1和SX2之間具有水滴時，水滴在通道SX1和通道SX2形成的電容為C3，再將通道SX2對地短路，如圖4所示，通道SX2對地短路後，通道SX1的等效電容Ceq等於電容C2和C3串聯後再與電容C1進行並聯後的電容值。可以發現，等效電容明顯大於通道SX1的自身對地電容，因此可以透過對比通道SX1在正常觸控掃描的對地電容和通道SX2對地短路之後SX1的防水掃描後的對地電容，在有水覆蓋到相鄰兩個通道以上的情況時，打開的通道透過水跨接到接地的通道上，則等效引入了額外的電容，導致掃描通道的總等效對地電容值發生了變化，透過掃描來檢測出該種變化，實現對水的檢測，後續透過軟體處理，如採用Firmware軟體演算法進行資料處理，篩選出超出閾值的資料，判定該資料對應的通道上有水，並針對被水覆蓋的分通道採用的資料計算方法可避免手指連通的水形成等勢面後，使得觸控面積比真實的手指大，產生的降低控制精準度問題。即本方案可減少或消除水滴對觸控精度的影響，提高帶水操作的精確度，實現在螢幕有水滴的前提下，實現對螢幕的精確觸控。 As shown in FIG. 3, the capacitance of the channel SX1 to the ground is C1, the capacitance of the channel SX2 to the ground is C2, and when there is a water droplet between the channels SX1 and SX2, the capacitance of the water droplet formed in the channel SX1 and the channel SX2 is C3, and then Short-circuit the channel SX2 to the ground. As shown in Figure 4, after the channel SX2 is short-circuited to ground, the equivalent capacitance Ceq of the channel SX1 is equal to the capacitance value of the capacitor C2 and C3 connected in series and then connected in parallel with the capacitor C1. It can be found that the equivalent capacitance is significantly larger than the self-to-ground capacitance of the channel SX1. Therefore, the ground capacitance of the SX1 after the waterproof scanning of the SX1 can be made through the comparison channel SX1 after the ground capacitance of the normal touch scanning and the channel SX2 are short-circuited to the ground. When water covers more than two adjacent channels, the open channel is connected to the grounded channel through water, and equivalently introduces additional capacitance, resulting in a change in the total equivalent capacitance of the scanning channel. Scanning to detect such changes, to achieve water detection, and subsequent processing through software, such as using Firmware software algorithm for data processing, screening out data beyond the threshold, determining that there is water on the channel corresponding to the data, and The data calculation method adopted by the water-covered sub-channel can prevent the water connected by the finger from forming the equipotential surface, so that the touch area is larger than the real finger, and the control precision is reduced. That is to say, the solution can reduce or eliminate the influence of water droplets on the touch precision, improve the accuracy of the water-carrying operation, and realize precise touch on the screen under the premise that the screen has water droplets.
掃描過程中，由於Source線(信號電極線)和Gate線(掃描 電極線)會同時傳送同樣的激勵信號，能夠消除與顯示電極與的公共電極(簡稱Vcom)產生的的耦合電容，從而提高掃描的精確度。 During the scanning process, due to the Source line (signal electrode line) and the Gate line (scanning) The electrode line) transmits the same excitation signal at the same time, which can eliminate the coupling capacitance generated by the common electrode (referred to as Vcom) with the display electrode, thereby improving the accuracy of scanning.
綜上所述，本發明實施例提供的內嵌式自容觸控顯示裝置以及水檢測方法，透過在正常的掃描週期中添加水檢測掃描幀，水檢測掃描幀時讓一部分分通道接地之後，實現對另一部分通道對水的有效檢測，透過對比分通道接地前後電容值的變化，判斷是分通道否為有水狀態。透過水檢測掃描幀獲得準確的有水狀態，然後再對資料進行後處理，以提高帶水操作的準確度。 In summary, the in-cell self-capacitive touch display device and the water detecting method provided by the embodiments of the present invention add a water detection scan frame in a normal scan period, and after a water detection scan frame allows a part of the sub-channels to be grounded, To achieve effective detection of water in another part of the channel, by comparing the change of the capacitance value before and after the sub-channel grounding, it is judged whether the sub-channel is in a water state. The water detection scan frame is used to obtain an accurate water state, and then the data is post-processed to improve the accuracy of the water operation.
為使本發明的上述目的、特徵和優點能夠更為明顯易懂，下面結合圖式對本發明的具體實施方式做詳細的說明。 The above described objects, features, and advantages of the present invention will be more apparent from the aspects of the invention.
在以下描述中闡述了具體細節以便於充分理解本發明。但是本發明能夠以多種不同於在此描述的其它方式來實施，所屬領域具通常知識者可以在不違背本發明內涵的情況下做類似推廣。因此本發明不受下面揭露的具體實施的限制。 Specific details are set forth in the following description in order to provide a thorough understanding of the invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art can make similar promotions without departing from the spirit of the invention. Therefore, the invention is not limited by the specific embodiments disclosed herein.
請參考圖5、6、7，圖5為本發明實施例所提供的內嵌式自容觸控顯示裝置水檢測方法中的觸控顯示掃描波形示意圖。圖6為本發明實施例中提供的內嵌式自容觸控顯示裝置水檢測方法中在一次水檢測掃描時的部分通道的電容值。圖7為本發明實施例所提供的內嵌式自容觸控顯示裝置水檢測方法的一種具體實施方式的步驟流程示意圖。 Please refer to FIG. 5 , FIG. 6 and FIG. 7 . FIG. 5 is a schematic diagram of a touch display scan waveform in a water detecting method of an in-cell self-capacitive touch display device according to an embodiment of the present invention. FIG. 6 is a diagram showing capacitance values of a part of a channel during a water detection scan in the water detecting method of the in-cell self-capacitive touch display device according to an embodiment of the present invention. FIG. 7 is a flow chart showing the steps of a specific implementation manner of a water detecting method for an in-cell self-capacitive touch display device according to an embodiment of the present invention.
圖5為在一個掃描週期中，包含兩個正常觸控掃描幀和一個水檢測掃描幀，掃描週期與現有技術中的一個掃描週期相同，而每個正常 觸控掃描幀和水檢測掃描幀的掃描時長也可以相等。 FIG. 5 shows two normal touch scan frames and one water detection scan frame in one scan cycle, and the scan period is the same as one scan cycle in the prior art, and each normal The scan duration of the touch scan frame and the water detection scan frame may also be equal.
從圖6可以看出，在列Chx08、Chx10、Chx12的Chy10、Chy11、Chy12和Chy13的12個位置的電容值明顯大於其它位置的電容值，而由於其它位置每個最小單元的電容值基本相等，可知是由於外因使得螢幕上的這些個位置處的電容值發生發改變，最有可能是由於這些位置由於水滴存在的原因，而不同的位置處的電容值變大的幅度不同的原因是在該處水滴的厚度不同，即使用這種方式檢測到了螢幕上孤立的水滴的存在。 As can be seen from Fig. 6, the capacitance values at 12 positions of Chy10, Chy11, Chy12, and Chy13 in columns Chx08, Chx10, and Chx12 are significantly larger than those at other positions, and the capacitance values of each of the smallest units are substantially equal due to other positions. It can be seen that due to external factors, the capacitance values at these positions on the screen change, most likely due to the presence of water droplets at these locations, and the reason why the capacitance values at different positions become larger is different. The thickness of the water droplets is different here, that is, the presence of isolated water droplets on the screen is detected in this way.
在一種具體方式中，如圖7所示，內嵌式自容觸控顯示裝置水檢測方法，包括： In a specific manner, as shown in FIG. 7, the in-cell self-capacitive touch display device water detecting method includes:
步驟10：將全螢幕所有列通道分為多組分通道，對分通道進行觸控掃描，每組分通道包括至少一列通道，每個掃描週期包括正常觸控掃描幀和水檢測掃描幀。 Step 10: Divide all the columns of the full screen into multi-component channels, and perform touch scanning on the sub-channels. Each component channel includes at least one column of channels, and each scanning period includes a normal touch scanning frame and a water detecting scanning frame.
步驟20：正常觸控掃描幀和水檢測掃描幀分別設定有觸控基準值，比較每個掃描週期採集到的正常觸控掃描幀資料和水檢測掃描幀資料相對各自設定觸控基準值的變化量。正常觸摸狀態下，正常觸控掃描幀資料和水檢測掃描幀資料相對各自觸控基準值的變化量均大於閾值。存在孤立水滴狀態下，被水覆蓋的分通道的正常觸控掃描幀資料相對已設定觸控基準值的產生的變化量小於水檢測掃描幀資料相對已設定觸控基準值產生的變化量。 Step 20: The normal touch scan frame and the water detection scan frame respectively set a touch reference value, and compare the change of the normal touch scan frame data and the water detection scan frame data collected in each scan period with respect to the respective set touch reference values. the amount. In the normal touch state, the amount of change between the normal touch scan frame data and the water detection scan frame data relative to the respective touch reference values is greater than the threshold. In the case of the isolated water droplets, the amount of change in the normal touch scan frame data of the sub-channel covered by the water relative to the set touch reference value is smaller than the change amount of the water detection scan frame data relative to the set touch reference value.
步驟30，對水覆蓋的分通道的電容值資料進行處理，去除水 滴對被水覆蓋的分通道的電容值的干擾。 Step 30: processing the capacitance value data of the water-covered sub-channel to remove water The interference of the drop on the capacitance value of the sub-channel covered by water.
其中，正常觸控掃描幀為對所有分通道進行的觸控掃描，水檢測掃描幀為對分通道進行的間隔掃描，即任意相鄰的兩個分通道中，一個分通道進行正常觸控掃描，另一個分通道接地。 The normal touch scan frame is a touch scan for all sub-channels, and the water detection scan frame is an interval scan for the sub-channels, that is, one of the adjacent two sub-channels and one sub-channel for normal touch scanning. The other sub-channel is grounded.
內嵌式自容觸控顯示裝置水檢測方法，透過在正常的掃描週期中添加水檢測掃描幀，水檢測掃描幀時讓一部分通道接地之後，實現對另一部分通道對水的有效檢測。透過水檢測掃描幀獲得準確的有水狀態，然後再對資料進行後處理，以提高帶水操作的準確度。 The water detecting method of the embedded self-capacitance touch display device detects the scanning frame by adding water in the normal scanning period, and after the water detecting scanning frame allows a part of the channel to be grounded, the water is effectively detected for the other part of the channel. The water detection scan frame is used to obtain an accurate water state, and then the data is post-processed to improve the accuracy of the water operation.
需要說明的是，在本發明中，水滴可以是完全覆蓋一個分通道，也可以是覆蓋分通道的一部分，而只是覆蓋分通道的很小的一部分時，即使帶水操作，實際的影響的效果也非常有限，因此一般會設定一個閾值，即分通道的電容值的變化大於閾值時，說明帶水操作對正常觸控的影響較大，否則，可以忽略不計，本發明對這個閾值不做限定，可以根據不同的螢幕的觸控精確度來設定。 It should be noted that, in the present invention, the water droplets may completely cover one sub-channel, or may cover a part of the sub-channel, but only cover a small part of the sub-channel, even if the water is operated, the actual effect is affected. It is also very limited, so a threshold is generally set, that is, when the change of the capacitance value of the sub-channel is greater than the threshold, it indicates that the operation with water has a great influence on the normal touch, otherwise, it can be ignored, and the present invention does not limit the threshold. , can be set according to the touch accuracy of different screens.
本發明的掃描頻率優先採用目前電子設備的常用頻率60Hz，在一個掃描週期中增加水檢測掃描幀不會影響報點率。但是本發明可適用於任何頻率。需注意的是：水檢測掃描幀的時長不能太短，否則，就不能對所有的分通道完成水檢測掃描，而一個週期中水檢測掃描幀的時長也不能太長，否則，正常觸控掃描幀的時長就相對變短了，影響報點率，而正常觸控掃描是對所有分通道進行掃描，是主要的對觸控進行的掃描，因此正常觸控掃描非常重要，因此需要獲得足夠的資料以及資料處理時間 來使得觸控變得精確。一般掃描的一個週期包括兩個正常觸控掃描幀和一個水檢測掃描幀。需要說明的是，本發明對掃描的一個週期中的掃描幀的數量不做限定，為保證防水檢測的準確和正常觸控掃描的準確，掃描的一個週期中包括三個掃描幀，兩個正常觸控掃描幀和一個水檢測掃描幀，每個掃描幀的時長可以相同，也可以不同，但是為了減少資料的處理難度和降低掃描的難度，因此每個掃描幀的時長相同。 The scanning frequency of the present invention preferentially adopts the common frequency of the current electronic device of 60 Hz, and increasing the water detection scanning frame in one scanning period does not affect the reporting rate. However, the invention is applicable to any frequency. It should be noted that the length of the water detection scan frame should not be too short. Otherwise, the water detection scan cannot be completed for all the sub-channels, and the duration of the water detection scan frame in one cycle cannot be too long. Otherwise, the normal touch The duration of the control scan frame is relatively short, which affects the report rate. The normal touch scan scans all the sub-channels and is the main scan for the touch. Therefore, normal touch scanning is very important, so it is necessary. Get enough information and data processing time To make the touch accurate. One cycle of a general scan includes two normal touch scan frames and one water detection scan frame. It should be noted that the present invention does not limit the number of scanning frames in one cycle of scanning. To ensure the accuracy of the waterproof detection and the accuracy of the normal touch scanning, three scanning frames are included in one cycle of scanning, and two normal. The touch scan frame and a water detection scan frame may have the same duration or different lengths, but in order to reduce the processing difficulty of the data and reduce the difficulty of scanning, the duration of each scan frame is the same.
內嵌式自容觸控顯示裝置水檢測方法的水檢測的判斷邏輯如下：以一個掃描週期包含兩個正常觸控掃描幀和一個水檢測掃描幀為例說明來水檢測的判斷邏輯：將兩個正常觸控掃描幀分別記為A幀和B幀，水檢測掃描幀記為C幀：A、B、C幀均有獨立的觸控基準值(Baseline)，記為BaseA、BaseB、BaseC。每一幀掃描採集回的原始資料(Rawdata)分別記為RawA、RawB、RawC，將各自的Rawdata和Baseline比較，則可以得出每一次掃描的變化量(Diff)，且將變化量標記為DiffA、DiifB、DiffC。 The determination logic of the water detection method of the embedded self-capacitive touch display device water detection method is as follows: a two-touch scan frame and a water detection scan frame are included in one scan cycle as an example to illustrate the judgment logic of the water detection: The normal touch scan frames are recorded as A frame and B frame respectively, and the water detection scan frame is recorded as C frame: A, B, and C frames have independent touch reference values (Baseline), which are recorded as BaseA, BaseB, and BaseC. The raw data collected by each frame scan (Rawdata) is recorded as RawA, RawB, RawC, respectively. By comparing the respective Rawdata and Baseline, the amount of change (Diff) of each scan can be obtained, and the variation is marked as DiffA. , DiifB, DiffC.
當正常觸摸時，即有導體如手指觸摸時，DiffA、DiffB及DiffC均會產生大於閾值的變化量，如圖8所示。而水滴導致的變化特徵是被水覆蓋的分通道的DiffA與DiffB基本無變化，DiffC卻會有明顯變化，如圖9所示。 When a normal touch occurs, that is, when a conductor such as a finger touches, DiffA, DiffB, and DiffC each generate a variation larger than the threshold, as shown in FIG. The change characteristic of water droplets is that the DiffA and DiffB of the sub-channel covered by water are basically unchanged, but DiffC has obvious changes, as shown in Fig. 9.
其中，A、B、C幀使用的觸控基準值及閾值可以相同也可以不相同。 The touch reference values and thresholds used in the A, B, and C frames may be the same or different.
一個掃描週期中只有正常觸控掃描幀和水檢測掃描幀，只能透過對比獲得一個分通道的電容值的變化，而相鄰的另一個分通道的電容值的變化還是不能獲得，為提高對螢幕上的水滴的檢測精度，提高帶水操作的精確度，掃描的一個週期還包括二次水檢測掃描幀，第二次水檢測掃描幀關閉的分通道為第一次水檢測掃描幀的正常觸控掃描通道，即一般的水檢測掃描幀與二次水檢測掃描幀的打開和關閉的通道正好相反。如所示第二次水檢測掃描幀為奇數分通道接地後對偶數分通道進行的掃描。則二次水檢測掃描幀中的第一次水檢測掃描幀為偶數分通道接地後對奇數分通道進行的掃描。這樣，在一個掃描週期中，奇數分通道和偶數分通道在三個掃描幀中，都是掃描兩次，對地短路一次，提高水檢測準確度。 In a scan cycle, only the normal touch scan frame and the water detection scan frame can only obtain the change of the capacitance value of one sub-channel through comparison, and the change of the capacitance value of the adjacent sub-channel cannot be obtained. The detection accuracy of the water droplets on the screen improves the accuracy of the operation with water. The one cycle of the scan also includes the secondary water detection scan frame, and the second water detection scan frame is closed for the first water detection scan frame. The touch scan channel, that is, the general water detection scan frame is opposite to the channel for opening and closing the secondary water detection scan frame. The second water detection scan frame as shown is the scan of the even sub-channel after the odd-numbered channel is grounded. Then, the first water detection scan frame in the secondary water detection scan frame is a scan of the odd sub-channel after the even-numbered sub-channel is grounded. Thus, in one scan cycle, the odd-numbered sub-channels and the even-numbered sub-channels are scanned twice in three scan frames, short-circuiting to ground, improving water detection accuracy.
多個分通道可以考慮各分通道的列數不同，但是有效的水檢測前提是水滴必須覆蓋在至少一個正常觸控掃描和接地的通道上面，所以優先採用隔列掃描方式，儘量能檢測到直徑更小的水滴。 Multiple sub-channels can take into account the different number of columns in each sub-channel, but the effective water detection premise is that the water droplets must be covered on at least one of the normal touch scanning and grounding channels, so the inter-row scanning method is preferred, and the diameter can be detected as much as possible. Smaller drops of water.
如果分通道中包含的列通道的數量較多，而水滴較小，那麼即使進行掃描過程中加入水檢測掃描幀，正常觸控掃描和防水掃描時分通道的電容值的變化不明顯，區分難度較大，甚至不能區分，因此為提高掃描的精度，提高帶水操作的精確度，分通道中只包含一條列通道。 If the number of column channels included in the sub-channel is large and the water droplets are small, even if the water detection scanning frame is added during the scanning process, the change of the capacitance value of the normal touch scanning and the waterproof scanning time channel is not obvious, and the difficulty is distinguished. Larger, even indistinguishable, so to improve the accuracy of the scan and improve the accuracy of the water-carrying operation, only one column channel is included in the sub-channel.
而對於水檢測掃描幀與正常觸控掃描幀的位置關係，一般每個掃描週期為兩個正常觸控掃描幀完成後再進行一個水檢測掃描幀，也可以是水檢測掃描幀在兩個正常觸控掃描幀之間，這樣能夠使得報點均勻，避免連接到兩個顯示幀之間的空白區域，該空白區域簡稱為空白幀。 For the positional relationship between the water detection scan frame and the normal touch scan frame, generally one scan frame is performed after each normal scan scan frame is completed, or the water detection scan frame is in two normal. Between the touch scan frames, this can make the report point uniform and avoid connecting to the blank area between the two display frames, which is simply referred to as a blank frame.
如果一個掃描週期中，包含多個水檢測掃描幀，可以在連續兩個正常觸控掃描幀之間沒有水檢測掃描幀，也可以是至少一個水檢測掃描幀位於相鄰兩個正常觸控掃描幀之間。 If a scan cycle includes multiple water detection scan frames, there may be no water detection scan frames between two consecutive normal touch scan frames, or at least one water detection scan frame may be located adjacent to two normal touch scans. Between frames.
為了減少運算量，提高掃描運算效率，多組分通道的列通道數量相等。 In order to reduce the amount of calculation and improve the efficiency of the scanning operation, the number of column channels of the multi-component channel is equal.
需要說明的是，本發明對分通道中包含的列通道的數量不做具體限定，如果列通道的寬度非常小，可以適當的增加分通道中列通道的數量，此外，還可以使用先多後少的掃描方式，即先使用分通道中包含列通道數目較多的方式掃描分通道，先找到水滴存在的位置，然後再將分通道中的列通道數目減少，對已找到的存在水滴的分通道進行精細掃描，然後進行後續的資料處理，以提高對水檢測的精確度，提高帶水操作的精確度。 It should be noted that, the present invention does not specifically limit the number of column channels included in the sub-channel. If the width of the column channel is very small, the number of column channels in the sub-channel can be appropriately increased, and in addition, the number of column channels in the sub-channel can be appropriately increased. The scanning method is small, that is, the sub-channel is scanned in a manner that the number of column channels in the sub-channel is large, and the position where the water droplet exists is first found, and then the number of column channels in the sub-channel is reduced, and the found water droplets are found. The channel is finely scanned and then processed for subsequent data to improve the accuracy of the water detection and improve the accuracy of the water operation.
除此之外，本發明實施例還提供了一種內嵌式自容觸控顯示裝置，如圖10所示，包括：掃描模組10以及資料分析模組20。 In addition, the embodiment of the present invention further provides an in-cell self-capacitive touch display device, as shown in FIG. 10, comprising: a scan module 10 and a data analysis module 20.
掃描模組10用於對指定螢幕的分通道進行掃描，一個掃描週期包括正常觸控掃描幀和水檢測掃描幀。 The scanning module 10 is configured to scan a sub-channel of a specified screen, and one scanning period includes a normal touch scanning frame and a water detecting scanning frame.
正常觸控掃描幀和水檢測掃描幀分別設定有觸控基準值，資料分析模組20比較每個掃描週期採集到的正常觸控掃描幀資料和水檢測掃描幀資料相對各自設定觸控基準值的變化量。正常觸摸狀態下，正常觸控掃描幀資料和水檢測掃描幀資料相對各自觸控基準值的變化量均大於閾值。存在孤立水滴狀態下，被水覆蓋的分通道的正常觸控掃描幀資料相 對已設定觸控基準值的產生的變化量小於水檢測掃描幀資料相對已設定觸控基準值產生的變化量。資料分析模組對被水覆蓋的分通道的電容值資料進行處理，去除水滴對被水覆蓋的分通道的電容值的干擾。 The normal touch scan frame and the water detection scan frame are respectively set with touch reference values, and the data analysis module 20 compares the normal touch scan frame data and the water detection scan frame data collected in each scan period with respect to the respective set touch reference values. The amount of change. In the normal touch state, the amount of change between the normal touch scan frame data and the water detection scan frame data relative to the respective touch reference values is greater than the threshold. The normal touch scan frame data phase of the sub-channel covered by water in the state of isolated water droplets The amount of change in the generated touch reference value is smaller than the amount of change in the water detection scan frame data relative to the set touch reference value. The data analysis module processes the capacitance value data of the sub-channel covered by the water to remove the interference of the water droplets on the capacitance value of the sub-channel covered by the water.
其中，正常觸控掃描幀為對所有分通道進行的掃描，水檢測掃描幀為對分通道進行的間隔掃描，即任意相鄰的兩個分通道中，一個分通道進行正常觸控掃描，另一個分通道接地。 The normal touch scan frame is a scan for all sub-channels, and the water detection scan frame is an interval scan of the sub-channels, that is, one of the adjacent two sub-channels, one sub-channel performs normal touch scanning, and the other One sub-channel is grounded.
內嵌式自容觸控顯示裝置的工作模式如圖11的步驟流程圖所示：先進行正常掃描，然後進行水檢測掃描，對相關的被水覆蓋的分通道進行標記，然後進行正常的資料處理，對無水標記的分通道則轉入正常的掃描，有水標記的分通道進行相應的有水資料後處理，去除水滴對觸摸的影響，提高帶水觸摸的準確度。 The working mode of the embedded self-capacitive touch display device is as shown in the flow chart of the step of step 11: first, normal scanning, then water detection scanning, marking the relevant sub-channel covered by water, and then performing normal data. For the treatment, the sub-channels with no water mark are transferred to the normal scan, and the sub-channels with water marks are subjected to the corresponding water data post-processing to remove the influence of water droplets on the touch and improve the accuracy of the touch with water.
使用軟體進行水滴處理的邏輯如圖12所示：進入軟體處理水滴邏輯，然後進行正常掃描看是否有感應，有感應則說明有正常觸摸，如果沒有感應，再進行水檢測掃描幀看是否有感應，如果有感應則對相應的分通道設置有水標記，否則，進行正常的資料處理，判定該通道無任何觸摸。 The logic for water droplet processing using software is shown in Figure 12: Enter the software to process the water droplet logic, and then perform a normal scan to see if there is any induction. If there is induction, it means there is a normal touch. If there is no induction, then the water detection scan frame is used to see if there is any induction. If there is induction, the water mark is set for the corresponding sub-channel. Otherwise, normal data processing is performed to determine that there is no touch on the channel.
在判斷完是否被觸摸之後，還需要進行資料處理，找出相應的分通道的座標，具體過程如圖13所示：先進行正常的前級濾波，然後檢查分通道是否具有水標記，如無水標記則進行正常的資料處理，如分通道有水標記，則針對有水狀態 進行前級濾波，然後進行正常的資料處理。再檢查是否具有標記，如無水標記，則將該分通道的座標資料進行上報，否則，對有水標記的分通道進行有水資料後處理之後，上報該分通道的座標資料進行。 After judging whether it has been touched, it is also necessary to perform data processing to find the coordinates of the corresponding sub-channel. The specific process is shown in Figure 13: firstly perform normal pre-stage filtering, and then check whether the sub-channel has water mark, such as water. The mark performs normal data processing. If there is a water mark in the sub-channel, it is for the water state. Perform pre-stage filtering and then perform normal data processing. If there is a mark, such as an anhydrous mark, the coordinate data of the sub-channel is reported. Otherwise, after the water-data sub-channel is subjected to the post-processing of the water data, the coordinate data of the sub-channel is reported.
多個列通道與匯流排、掃描模組等的連接關係，如圖14、15所示。 The connection relationship between a plurality of column channels, a bus bar, a scanning module, and the like is as shown in FIGS.
內嵌式自容觸控顯示裝置的TFT(Thin-film transistor，薄膜電晶體)、公共電壓驅動埠和感應電極一般設置在同一層，而多個In-cell自容電容屏的TFT一般設置為TFT陣列，TFT陣列層設置在TFT陣列玻璃與液晶層之間。 The TFT (Thin-film transistor), the common voltage driving 埠 and the sensing electrode of the embedded self-capacitive touch display device are generally disposed on the same layer, and the TFTs of the plurality of In-cell self-capacitive capacitive screens are generally set to In the TFT array, a TFT array layer is disposed between the TFT array glass and the liquid crystal layer.
這種設置方式由於共用一個Vcom介面能夠同時掃描所有的感應電極，掃描時間短，掃描頻率高，可集成到IC中用於觸控或LCD驅動。適用於MIPI、I2C和SPI。 This setting method can scan all the sensing electrodes at the same time by sharing one Vcom interface. The scanning time is short and the scanning frequency is high, which can be integrated into the IC for touch or LCD driving. Suitable for MIPI, I2C and SPI.
而TFT與Vcom之間連接方式一般有兩種方案：單層和雙層。 There are two options for the connection between TFT and Vcom: single layer and double layer.
在單層方案中，如圖14所示，同行TFT陣列中的TFT與Vcom的連接線與TFT的表面接觸導通，即TFT和TFT與Vcom的連接線在同一平面內，這種方式的優點是：能夠降低In-cell自容電容屏的厚度，而缺點是：同一行中的TFT在縱向上長度相等，而在橫向上，由於需要有多條連接線與TFT平行設置，越接近Vcom的TFT在橫向上的寬度越小，對液晶的控制區域在縮小，即如果不同的TFT的各項電參數相同，而不同的TFT的面積不同，能夠控制的液晶面積不同，使得In-cell自容電容屏的發光不均勻，而且對引線的操作精度非常的，工藝難度較大，可以直接透過具有較 高的刻蝕精度的刻蝕過程實現。 In the single layer scheme, as shown in FIG. 14, the connection line between the TFT and the Vcom in the TFT array is in contact with the surface of the TFT, that is, the connection line between the TFT and the TFT and the Vcom is in the same plane. : The thickness of the In-cell self-capacitive capacitive screen can be reduced, and the disadvantage is that the TFTs in the same row are equal in length in the longitudinal direction, and in the lateral direction, since a plurality of connecting lines are required to be arranged in parallel with the TFT, the closer to the Vcom TFT The smaller the width in the lateral direction, the smaller the control area of the liquid crystal is, that is, if the electrical parameters of different TFTs are the same, and the areas of different TFTs are different, the area of the liquid crystal that can be controlled is different, so that the In-cell self-capacitance capacitor The screen has uneven illumination, and the precision of the operation of the lead is very high. The process is difficult and can be directly transmitted through High etching precision is achieved by the etching process.
而在雙層方案中，如圖15所示，同行TFT陣列中的TFT與Vcom的連接線與TFT穿過絕緣層導通，即TFT和TFT與與Vcom的連接線在兩個不同的平面內，需要對TFT表面鍍一層絕緣層，透過挖孔的方式與連接線導通，這種方式的優點是：各個TFT的面積可以完全相同，內嵌式自容觸控顯示裝置的發光均勻，缺點是：由於TFT的面積非常小，在TFT的表面穿過絕緣層與連接線導通，工藝難度非常大。 In the two-layer scheme, as shown in FIG. 15, the connection line between the TFT and the Vcom in the TFT array is electrically connected to the TFT through the insulating layer, that is, the TFT and the connection line between the TFT and the Vcom are in two different planes. It is necessary to plate an insulating layer on the surface of the TFT and conduct the hole through the hole. The advantage of this method is that the area of each TFT can be completely the same, and the built-in self-capacitive touch display device has uniform illumination, and the disadvantages are: Since the area of the TFT is very small, the surface of the TFT is electrically connected to the connecting line through the insulating layer, and the process is very difficult.
綜上所述，本發明實施例提供的內嵌式自容觸控顯示裝置以及水檢測方法，透過在正常的掃描週期中添加水檢測掃描幀，水檢測掃描幀時讓一部分通道接地之後，實現對另一部分通道對水的有效檢測，透過對比分通道接地前後電容值的變化，判斷是分通道否為有水狀態。透過水檢測掃描幀獲得準確的有水狀態，然後再對資料進行後處理，以提高帶水操作的準確度。 In summary, the in-cell self-capacitive touch display device and the water detecting method provided by the embodiments of the present invention realize that a water detecting scan frame is added in a normal scanning period, and a part of the channel is grounded after the water detecting scanning frame is realized. For the effective detection of water in another part of the channel, it is judged whether the sub-channel is in a water state by comparing the change of the capacitance value before and after the sub-channel is grounded. The water detection scan frame is used to obtain an accurate water state, and then the data is post-processed to improve the accuracy of the water operation.
以上對本發明所提供的內嵌式自容觸控顯示裝置以及水檢測方法進行了詳細介紹。本文中應用了具體個例對本發明的原理及實施方式進行了闡述，以上實施例的說明只是用於幫助理解本發明的方法及其核心思想。應當指出，對於所屬領域具通常知識者來說，在不脫離本發明原理的前提下，還可以對本發明進行若干改進和修飾，這些改進和修飾也落入本發明請求項的保護範圍內。 The in-cell self-capacitive touch display device and the water detecting method provided by the present invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, and the description of the above embodiments is only to assist in understanding the method of the present invention and its core idea. It is to be noted that a number of modifications and variations of the present invention may be made without departing from the spirit and scope of the invention.
步驟10~30：內嵌式自容觸控顯示裝置水檢測方法步驟Steps 10~30: Steps for water detection method of embedded self-capacitive touch display device
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