WO2015090002A1 - 触摸控制单元、阵列基板、显示装置和触摸控制方法 - Google Patents
触摸控制单元、阵列基板、显示装置和触摸控制方法 Download PDFInfo
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- WO2015090002A1 WO2015090002A1 PCT/CN2014/078535 CN2014078535W WO2015090002A1 WO 2015090002 A1 WO2015090002 A1 WO 2015090002A1 CN 2014078535 W CN2014078535 W CN 2014078535W WO 2015090002 A1 WO2015090002 A1 WO 2015090002A1
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- Prior art keywords
- control
- sensing
- output
- line
- touch
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000758 substrate Substances 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 107
- 239000004973 liquid crystal related substance Substances 0.000 claims description 18
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- 239000010409 thin film Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 19
- 230000008569 process Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 11
- 230000000875 corresponding effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
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- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910004205 SiNX Inorganic materials 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2354/00—Aspects of interface with display user
Definitions
- Touch control unit array substrate, display device, and touch control method
- the present invention relates to the field of display technologies, and in particular, to a touch control unit, an array substrate, a display device, and a touch control method. Background technique
- in-cell touch technology has become the focus of major manufacturers.
- world-renowned manufacturers have invested a lot of manpower and resources in R&D, yield improvement and patent layout.
- in-cell touch technology has the advantage of making the entire display panel more integrated and making the entire display panel lighter and thinner, in line with consumer trends in electronic products.
- in-cell touch technology has many problems, including noise problems caused by the interaction of touch and display, sensitivity of touch, and yield of embedded touch products.
- FIG. 1 is an equivalent circuit diagram of a touch display structure provided in the prior art.
- the touch display structure includes: an output line 1 and a data line 4 And the gate line, the data line 4 and the gate line define the touch display unit 2, and the touch display unit 2 includes: a fourth switch tube T4, a fifth switch tube ⁇ 5, a storage capacitor Cst, and a liquid crystal capacitor Clc.
- the gate of the fourth switch T4 is connected to the gate line Gn, the first pole of the fourth switch T4 is connected to the node P, the second pole of the fourth switch T4 is connected to the data line 4, and the fifth switch T5
- the gate is connected to the gate line Gn-i, the first pole of the fifth switching transistor T5 is connected to the output line 1, the second pole of the fifth switching transistor T5 is connected to the node P, and the first end of the storage capacitor Cst is connected to the common
- the electrode Vcom the second end of the storage capacitor Cst is connected to the node P, the first end of the liquid crystal capacitor Clc is connected to the common electrode Vcom, and the second end of the liquid crystal capacitor Clc is connected to the node P.
- liquid crystal has a direct relationship between the capacitance and the orientation and spacing d of the liquid crystal molecules. Therefore, when the touch occurs, the pitch d of the liquid crystal capacitor Clc changes, resulting in a corresponding capacitance of the liquid crystal capacitor Clc. The change, while the capacitance of the storage capacitor Cst does not change.
- the voltage of the pixel written in the previous frame is Vp, and it is stored in the storage battery.
- the fifth switching transistor T5 When the gate line Gn-i is at a high level, the fifth switching transistor T5 is turned on, and the voltage Vp of the node P is transmitted to the signal processor 3 through the fifth switching transistor T5 and the output line 1, and the signal processor 3 uses Vp and the reference voltage.
- the REF comparison determines whether a touch occurs at the node P, and thus the data line 4 inputs a data signal voltage to the corresponding pixel when the gate line Gn is turned on.
- ⁇ Vp Vp, -Vp ⁇ Vp*ACLC/ (CST+CLC) / (CST+CLC) , the size of AVp directly determines the sensitivity of the touch function, and the size of AVp is affected by Vp, thus making the touch function Sensitivity is affected by Vp.
- a storage capacitor Cst and a liquid crystal capacitor Clc are formed between the node P and the common electrode Vcom, and the node P is respectively connected to the first pole of the fourth switching transistor T4 and the second pole of the fifth switching transistor T5.
- P is a pixel electrode, so the voltage of the node P is the pixel voltage.
- the present invention provides a touch control unit, an array substrate, a display device, and a touch control method for improving the sensitivity of a touch and improving the display quality of a screen.
- a touch control unit including: a control module, a sensing module, and an output module, wherein the control module is connected to a control line and the sensing module, and the sensing module is a control line is connected to the output module, and the output module is connected to the sensing line and the output line;
- the control module is configured to write a charging voltage to the sensing module under the control of a control signal output by the control line;
- the sensing module is configured to generate a sensing voltage and output the sensing voltage to the output module;
- the output module is configured to output a touch signal to the output line under the control of the sensing signal output by the sensing line.
- control module includes a first switch tube
- control pole and the first pole of the first switch tube are both connected to the control line, and the second pole of the first switch tube is connected to the sensing module.
- the sensing module includes a first capacitor and a second capacitor
- the first end of the first capacitor is connected to the control line, and the second end of the first capacitor is connected to the first end of the second capacitor and the output module;
- the second end of the second capacitor is coupled to the common electrode.
- the output module includes a second switch tube and a third switch tube;
- a control pole of the second switch tube is connected to the sensing module, a first pole of the second switch tube is connected to the sensing line, and a second pole of the second switch tube is connected to the third pole Connecting the first pole of the switch tube;
- the control pole of the third switch tube is connected to the sensing line, and the second pole of the third switch tube is connected to the output line.
- the first capacitor is a storage capacitor
- the second capacitor is a liquid crystal capacitor
- the first switch tube, the second switch tube, and the third switch tube are Thin film transistor.
- the present invention provides an array substrate, including: a gate line and a data line, the gate line and the data line defining a pixel unit, wherein the pixel unit is formed with a display control unit and a pixel electrode,
- the method includes: a control line, a sensing line, an output line, and the above touch control unit, and each of the touch control units is disposed corresponding to at least one pixel unit.
- each of the touch control units is disposed corresponding to one pixel, and the one pixel includes a plurality of the pixel units.
- the present invention provides a display device comprising the above array substrate.
- the present invention provides a touch control method of a touch control unit, including:
- the step of writing a charging voltage to the sensing module by the control module under the control of the control signal output by the control line includes: in the charging phase, causing the first switching tube to be output on the control line a step of turning on the control signal and writing a charging voltage to the first capacitor and the second capacitor;
- the step of generating a sensing voltage by the sensing module and outputting the sensing voltage to the output module includes: in the sensing phase, a control signal outputting the first switching tube on the control line And a step of turning off the first capacitor and the second capacitor to generate the sensing voltage;
- the step of outputting the touch signal to the output line by the output module under the control of the sensing signal outputted by the sensing line includes: in the outputting stage, causing the third switching tube to be in the sensing line
- the output of the sensing signal is turned on, and the current from the second switching tube is derived to the output line to implement the step of outputting the touch signal to the output line.
- the first switch tube is turned off under the control of a control signal output by the control line, and the first capacitor and the second capacitor are charged and discharged to generate the sensing voltage.
- the steps include:
- the first switch tube When the touch occurs, the first switch tube is turned off under the control of the control signal output by the control line, the capacitance value of the second capacitor is changed, and the first capacitor and the second The capacitor is charged and discharged to generate the sensing voltage.
- the touch control unit can implement the touch function separately, so that the display function and the touch function are separately set, and the sensitivity of the touch function is not affected by the pixel voltage.
- the effect of the touch thereby improving the sensitivity of the touch; the pixel is not affected by a large amount of noise in the output line during the display process, thereby improving the display quality of the picture; the touch control unit separately implements the touch function, so it is not necessary to display the image in one frame.
- the time is divided to perform the processing of the touch signal, so that the charging rate of the pixel is not affected, thereby improving the display quality of the screen.
- FIG. 1 is an equivalent circuit diagram of a touch display structure provided in the prior art
- FIG. 2 is an equivalent circuit diagram of a touch control unit according to Embodiment 1 of the present invention
- FIG. 3 is a schematic diagram showing the operation timing of the touch control unit in Embodiment 1;
- FIG. 4 is a schematic structural diagram of a touch control unit according to Embodiment 1 of the present invention
- FIG. 5 is a schematic structural diagram of a common electrode and a pixel electrode of the touch control unit of FIG. 4; Schematic diagram of the structure of the substrate. detailed description
- FIG. 2 is an equivalent circuit diagram of a touch control unit according to Embodiment 1 of the present invention.
- the touch control unit includes: a control module 11, a sensing module 12, and an output module 13, a control module 11 and a control Line 14 and sensing module 12 are connected, sensing module 12 and control line 14 is connected to the output module 13, and the output module 13 is connected to the sensing line 15 and the output line 16.
- the control module 11 is used to control the sensing module under the control of the control signal output by the control line 14.
- the sensing module 12 is for generating a sensing voltage and outputting the sensing voltage to the output module 13.
- the output module 13 is for outputting a touch signal to the output line 16 under the control of the sensing signal output from the sensing line 15.
- control module 11 can include a first switch tube T1.
- the control pole and the first pole of the first switch tube T1 are both connected to the control line 14, and the second pole of the first switch tube T1 and the sensing module
- the sensing module 12 includes a first capacitor Cr and a second capacitor Cl.
- the first end of the first capacitor Cr is connected to the control line 14, the second end of the first capacitor Cr is connected to the first end of the second capacitor C1 and the output module 13; the second end of the second capacitor C1 is connected to the common electrode Vcom .
- the second poles of the first switching transistor T1 are respectively connected to the second end of the first capacitor Cr and the first end of the second capacitor C1.
- the output module 13 includes a second switch tube T2 and a third switch tube T3.
- the control pole of the second switch tube 2 is connected to the sensing module 12, the first pole of the second switch tube 2 is connected to the sensing line 15, the second pole of the second switch tube 2 and the first pole of the third switch tube 3
- the control pole of the third switch tube 3 is connected to the sensing line 15, and the second pole of the third switch tube 3 is connected to the output line 16.
- the control terminals of the second switching transistor ⁇ 2 are respectively connected to the second end of the first capacitor Cr and the first end of the second capacitor C1.
- the first capacitor Cr is a storage capacitor
- the second capacitor C1 is a liquid crystal capacitor. Among them, when the touch occurs, the capacitance value of the liquid crystal capacitor C1 changes.
- the first switch tube T1, the second switch tube ⁇ 2, and the third switch tube ⁇ 3 may each be a thin film transistor (TFT).
- TFT thin film transistor
- the control electrode of the switching tube may be a gate
- the first pole of the switching tube may be a source or a drain
- the second pole of the switching tube may be a drain or a source.
- FIG. 3 is a schematic diagram showing the operation timing of the touch control unit in the first embodiment. The working process of the touch control unit in this embodiment will be described in detail below with reference to FIG. 2 and FIG. 3.
- the control module 11 writes a charging voltage to the sensing module 12 under the control of a control signal output by the control line 14.
- the first switch tube T1 is output on the control line 14.
- the control signal is turned on under control, and the charging voltage is written to the first capacitor Cr and the second capacitor C1.
- the control signal outputted by the control line 14 is a high level signal, and the voltage value of the control signal is VRH, and the first switching transistor T1 is turned on under the control of the high level signal.
- the control line 14 writes a charging voltage to the first capacitor Cr and the second capacitor C1 through the turned-on first switching transistor T1.
- the sensing module 12 During the sensing phase, the sensing module 12 generates a sensing voltage and outputs a sensing voltage to the output module 13. Specifically, the first switching transistor T1 is turned off under the control of the control signal output from the control line, and the first capacitor Cr and the second capacitor C1 are charged and discharged to generate a sensing voltage. In the above process, the sum of the charges stored in the first capacitor Cr and the second capacitor C1 is conserved, and the charge is redistributed between the two capacitors to achieve a new balance, so that the first capacitor Cr and the second capacitor C1 are charged. Discharge phenomenon to achieve the conservation of the sum of charges. As shown in FIG.
- control signal output by the control line 14 is a low level signal, and at this time, the voltage value of the control signal is VGND, and the second switching transistor T2 is cut off under the control of the low level signal.
- control line 14 no longer writes a charging voltage to first capacitor Cr and second capacitor C1.
- the sensing voltage output from the sensing module 12 to the output module 13 is the voltage A of point A in FIG. Then, when the touch occurs, the capacitance value of the second capacitor C1 changes, and the first capacitor Cr and the second capacitor C1 are charged and discharged to generate a sensing voltage, and the sensing voltage VA changes compared with when no touch occurs.
- AV VRH-VGND. Since the current flowing through the second switching transistor T2 is positively correlated with the sensing voltage VA, the current flowing through the second switching transistor T2 when a touch occurs occurs correspondingly with respect to the occurrence of no touch.
- T3 is turned off and the first pole of the second switching transistor T2 is also at a low level, so that the leakage current flowing from the second switching transistor T2 through the third switching transistor T3 to the output line 16 is very small, so that the noise in the output line 16 is relatively small. Small, which further increases the sensitivity of the touch.
- the output module 13 outputs a touch signal to the output line 16 under the control of the sensing signal output from the sensing line 15. Specifically, the sense of the output of the third switch tube T3 at the sensing line 15 The control signal is turned on, and the current from the second switching transistor T2 is led to the output line 16 to output a touch signal to the output line 16.
- the sensing signal outputted by the sensing line 15 is a high level signal
- the third switching tube T3 is in an on state under the control of the high level signal, and thus will be from the second switch.
- the current of tube T2 is directed to output line 16 to effect output of a touch signal to output line 16.
- the output line 16 outputs the touch signal to the peripheral processor.
- the peripheral processor can determine whether a touch occurs according to the touch signal, for example: the peripheral processor can compare the touch signal with the reference signal to determine whether a touch occurs.
- FIG. 4 is a schematic diagram of a structure of a touch control unit according to Embodiment 1 of the present invention.
- the first pole 101a and the second pole 101b of the first switch transistor T1 and the second switch transistor T2 are The first pole 301a and the second pole 301b of the first pole 201a and the second pole 201b and the third switching transistor T3 are disposed in the same layer.
- An active layer pattern is formed on each of the first and second poles of each of the switching tubes.
- a gate insulating layer is formed on the active layer pattern, and the number of the gate insulating layers may be one or more layers, and the material of the gate insulating layer may be SiOx or SiNx.
- a control line 14 and a sensing line 15 are formed above the gate insulating layer, and the control line 14 and the sensing line 15 are disposed in the same layer.
- a first metal layer is formed over the gate insulating layer, and the first metal is formed. The layer performs a patterning process to form the control line 14 and the sensing line 15.
- the control of the first switch tube T1 is a part of the control line 14, the control pole of the second switch tube T2 (not shown in FIG.
- the third switch tube T3 A portion of the sensing line 15 is formed with a spacer layer above the control electrode of the three switching tubes.
- the number of the spacer layers may be one or more layers, and the material of the spacer layer may be SiOx or SiNx.
- the first pole 101a of the first switching transistor T1 is connected to the control line 14 through the via 101c, the via 101d, and the first connection pattern 101e, wherein the first connection pattern 101e is filled in the via 101c and the via 101d.
- the first end of the first capacitor Cr is a part of the control line 14, the second end of the first capacitor Cr is a part of the second pole 101b of the first switching transistor T1, and the gate insulating layer is located at the first of the first capacitor Cr Between the end and the second end.
- the first pole 201a of the second switch tube T2 is connected to the sensing line 15 through the via 201c, the via 201d and the second connection pattern 201e, wherein the second connection pattern 201e is filled in the via 201c and the via 201d.
- the second pole 201b of the second switch tube T2 is connected to the first pole 301a of the third switch tube T3 through the via 201f, the via 201g and the third connection pattern 201h, wherein the third connection pattern 201h is filled in The via hole 201f and the via hole 201g.
- the control electrode of the second switch tube T2 is connected to the second pole 101b of the first switch tube through the via 201 i, the via 201 j and the fourth connection pattern 201k, and the fourth connection pattern 201k is filled in the via 201 i, the via In 201j.
- the second pole 301b of the third switching transistor T3 is connected to the output line 16 through the via 301c, wherein the output line 16 is filled in the via 301c.
- the first connection pattern 101e, the second connection pattern 201e, the third connection pattern 201h, and the output line 16 are disposed in the same layer. Specifically, a second metal layer is formed on the passivation layer, and a patterning process is performed on the second metal layer, thereby A first connection pattern 101e, a second connection pattern 201e, a third connection pattern 201h, and an output line 16 are formed.
- FIG. 5 is a schematic structural view of a common electrode and a pixel electrode of the touch control unit of FIG. 4, as shown in FIG. 4 and FIG. 5, the first connection pattern 101e, the second connection pattern 201e, the third connection pattern 201h, and the output in FIG.
- a first insulating layer is formed above the line 16, and the material of the first insulating layer is an organic material.
- a pixel electrode 401 and a common electrode 402 located above the pixel electrode are formed over the first insulating layer, and a second insulating layer is formed between the pixel electrode 401 and the common electrode 402.
- the material of the second insulating layer may be SiNx.
- the pixel electrode 401 has a plate-like structure, and the common electrode 402 has a comb structure.
- the pixel electrode 401 is a comb structure, and the common electrode 402 is a plate structure.
- the material of the pixel electrode 401 and the common electrode 402 may each be a transparent conductive material such as indium tin oxide (IT0).
- the pixel electrode 401 is connected to the second pole 101b of the first switching transistor T1 through the via 101f, wherein the pixel electrode 401 is filled in the via 101f.
- the touch control unit shown in FIG. 4 and FIG. 5 can be applied to an in-plane swi tching (referred to as IPS) display device.
- IPS in-plane swi tching
- the structure of the touch control unit can also be applied to ultra-high-dimensional field conversion (Advanced).
- Super Dimension Switch, abbreviated as: ADS) Display device the structure of the touch control unit applied to the ADS display device will not be described in detail.
- the touch control unit can also be applied to display devices of other display modes, for example: the touch control unit can be applied to a twisted nematic (TN) display device or a vertical alignment (Vertical Al ignment, Abbreviation: VA) Display device.
- TN twisted nematic
- VA vertical alignment
- the touch control unit shown in Figures 4 and 5 is fabricated by a polysilicon process. In practical applications, the touch control unit can also be fabricated by an oxide (OXIDE) process or an amorphous silicon process.
- OXIDE oxide
- amorphous silicon process oxide
- the touch control unit provided in this embodiment can implement the touch function separately, so that the display function Separate from the touch function, the sensitivity of the touch function is not affected by the pixel voltage, thereby improving the sensitivity of the touch; the pixel is not affected by a large amount of noise in the output line during the display process, thereby improving the display quality of the screen;
- the control unit realizes the touch function separately, so that the processing of the touch signal is performed without dividing the time in the display process of one frame, so that the charging rate of the pixel is not affected, thereby improving the display quality of the picture.
- the touch control unit is set such that the touch function and the display function do not interfere with each other, thereby reducing the mutual influence of the touch function and the display function.
- the touch control unit has a simple layout and is easy to implement.
- FIG. 6 is a schematic structural diagram of an array substrate according to Embodiment 2 of the present invention.
- the array substrate includes: a gate line 21, a data line 22, a control line 14, a sensing line 15, an output line 16, and
- the touch control unit 17, the gate line 21 and the data line 22 define a pixel unit 23 in which a display control unit 24 and a pixel electrode 25 are formed, and each touch control unit 17 is provided corresponding to at least one pixel unit 23.
- each touch control unit 17 is disposed corresponding to one pixel, and one pixel includes a plurality of pixel units 23. In this embodiment, one pixel includes three pixel units 23. That is, each touch control unit 17 is provided corresponding to three pixel units 23.
- the display control unit 24 may be a TFT.
- the touch control unit 17 can adopt the touch control unit described in the first embodiment, and is not described in detail herein.
- the touch control unit can implement the touch function separately, and the display function is implemented by the display control unit, so that the display function and the touch function are separately set, and the sensitivity of the touch function is not affected by the pixel voltage. , thereby improving the sensitivity of the touch; the pixel is not affected by a large amount of noise in the output line during the display process, thereby improving the display quality of the picture; the touch control unit separately implements the touch function, so there is no need to separate the display during the display of one frame The time is performed to perform processing on the touch signal so as not to affect the charging rate of the pixel, thereby improving the display quality of the screen. Setting the touch control unit makes the touch function and the display function do not interfere with each other, thereby reducing the interaction between the touch function and the display function.
- the touch control unit has a simple layout and is easy to implement.
- Embodiment 3 of the present invention provides a display device including an array substrate.
- the array substrate may be the array substrate described in the second embodiment, and will not be described in detail herein.
- the display device may be: a liquid crystal display panel, an electronic paper, a mobile phone, a tablet computer, Any product or component that has a display function, such as a television, monitor, laptop, digital photo frame, navigator, etc.
- the display device may be an IPS display device or an ADS display device.
- the touch control unit can implement the touch function separately, and the display function is implemented by the display control unit, so that the display function and the touch function are separately set, and the sensitivity of the touch function is not affected by the pixel voltage. , thereby improving the sensitivity of the touch; the pixel is not affected by a large amount of noise in the output line during the display process, thereby improving the display quality of the picture; the touch control unit separately implements the touch function, so there is no need to separate the display during the display of one frame The time is performed to perform processing on the touch signal so as not to affect the charging rate of the pixel, thereby improving the display quality of the screen. Setting the touch control unit makes the touch function and the display function do not interfere with each other, thereby reducing the interaction between the touch function and the display function.
- the touch control unit has a simple layout and is easy to implement.
- a fourth embodiment of the present invention provides a touch control method.
- the touch control method may include: Step 101: In a charging phase, write a charging voltage to a sensing module by a control module under control of a control signal output by a control line.
- Step 102 In the sensing phase, the sensing voltage is generated by the sensing module and the sensing voltage is output to the output module.
- Step 103 In the output stage, the output module outputs a touch signal to the output line under the control of the sensing signal outputted by the sensing line.
- the touch control method provided in this embodiment can be implemented by using the touch control unit provided in the first embodiment.
- the step 101 may specifically include: in the charging phase, turning on the first switch tube under the control of a control signal output by the control line, and writing and charging the first capacitor and the second capacitor Voltage.
- Step 102 may specifically include: in the sensing phase, turning off the first switch tube under the control of a control signal output by the control line, and causing charging and discharging of the first capacitor and the second capacitor To generate the sensing voltage.
- the first switch tube is turned off under the control of a control signal output by the control line, the capacitance value of the second capacitor is changed, and the first capacitor and the The second capacitor is charged and discharged to generate the sensing voltage.
- the step 103 may specifically include: in the outputting phase, turning on the third switch tube under the control of the sensing signal output by the sensing line, and exporting current from the second switch tube to The output line is configured to output the touch signal to the output line.
- the touch control method can separately implement the touch function, so that the display function and the touch function are separately set, and the sensitivity of the touch function is not affected by the pixel voltage, thereby improving the sensitivity of the touch.
- the pixels are not affected by a large amount of noise in the output line, thereby improving the display quality of the picture; the touch control method separately implements the touch function, so that it is not necessary to separate the time to perform the touch signal during the display of one frame of the picture. Processing, so as not to affect the charging rate of the pixel, thereby improving the display quality of the picture.
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims
Priority Applications (1)
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US14/424,818 US9760198B2 (en) | 2013-12-17 | 2014-05-27 | Touch control unit, array substrate, display device, and touch control method |
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CN201310694938.3A CN103677420B (zh) | 2013-12-17 | 2013-12-17 | 触摸控制单元、阵列基板、显示装置和触摸控制方法 |
CN201310694938.3 | 2013-12-17 |
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US (1) | US9760198B2 (zh) |
CN (1) | CN103677420B (zh) |
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JP6117951B2 (ja) | 2013-03-14 | 2017-04-19 | エルジー エレクトロニクス インコーポレイティド | 近接サービス基盤の無線接続方式変更方法及び装置 |
CN103677420B (zh) | 2013-12-17 | 2015-12-30 | 合肥京东方光电科技有限公司 | 触摸控制单元、阵列基板、显示装置和触摸控制方法 |
CN105259719B (zh) * | 2015-09-22 | 2018-05-18 | 成都天马微电子有限公司 | 一种显示面板的放电电路和显示装置 |
JP6503275B2 (ja) * | 2015-10-09 | 2019-04-17 | 株式会社ジャパンディスプレイ | センサ及びセンサ付き表示装置 |
KR102392683B1 (ko) * | 2015-11-30 | 2022-05-02 | 엘지디스플레이 주식회사 | 터치스크린 내장형 표시장치 |
CN106201086B (zh) * | 2016-07-13 | 2018-12-11 | 武汉华星光电技术有限公司 | 内嵌式触控面板及其驱动方法、触控显示器 |
US10395614B2 (en) * | 2017-06-22 | 2019-08-27 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Common voltage generating circuit and LCD |
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US6384878B1 (en) * | 1999-01-15 | 2002-05-07 | Samsung Electronicsco., Ltd. | Liquid crystal display having an electrostatic protection circuit |
CN101726890A (zh) * | 2008-10-28 | 2010-06-09 | 瀚宇彩晶股份有限公司 | 内嵌电容式感应输入显示装置 |
CN101930136A (zh) * | 2009-06-19 | 2010-12-29 | 瀚宇彩晶股份有限公司 | 触控式液晶显示器及其运作方法 |
CN103677420A (zh) * | 2013-12-17 | 2014-03-26 | 合肥京东方光电科技有限公司 | 触摸控制单元、阵列基板、显示装置和触摸控制方法 |
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KR101902929B1 (ko) * | 2012-07-25 | 2018-10-01 | 삼성전자주식회사 | 터치 패널, 터치 스크린 장치 및 이의 구동 방법 |
-
2013
- 2013-12-17 CN CN201310694938.3A patent/CN103677420B/zh not_active Expired - Fee Related
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2014
- 2014-05-27 US US14/424,818 patent/US9760198B2/en active Active
- 2014-05-27 WO PCT/CN2014/078535 patent/WO2015090002A1/zh active Application Filing
Patent Citations (4)
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US6384878B1 (en) * | 1999-01-15 | 2002-05-07 | Samsung Electronicsco., Ltd. | Liquid crystal display having an electrostatic protection circuit |
CN101726890A (zh) * | 2008-10-28 | 2010-06-09 | 瀚宇彩晶股份有限公司 | 内嵌电容式感应输入显示装置 |
CN101930136A (zh) * | 2009-06-19 | 2010-12-29 | 瀚宇彩晶股份有限公司 | 触控式液晶显示器及其运作方法 |
CN103677420A (zh) * | 2013-12-17 | 2014-03-26 | 合肥京东方光电科技有限公司 | 触摸控制单元、阵列基板、显示装置和触摸控制方法 |
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US20160034082A1 (en) | 2016-02-04 |
CN103677420B (zh) | 2015-12-30 |
CN103677420A (zh) | 2014-03-26 |
US9760198B2 (en) | 2017-09-12 |
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