CN109062458A - Touch-control display panel and display device - Google Patents
Touch-control display panel and display device Download PDFInfo
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- CN109062458A CN109062458A CN201811084615.1A CN201811084615A CN109062458A CN 109062458 A CN109062458 A CN 109062458A CN 201811084615 A CN201811084615 A CN 201811084615A CN 109062458 A CN109062458 A CN 109062458A
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- display panel
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
Abstract
The present invention relates to a kind of touch-control display panels, and including the array substrate being oppositely arranged and color membrane substrates, color membrane substrates include multiple pixel regions in matrix distribution；Each pixel region includes the first sub-pixel, the second sub-pixel, third sub-pixel and the 4th sub-pixel, first sub-pixel, the second sub-pixel and third sub-pixel arrange in the same direction, 4th sub-pixel and the first sub-pixel, the second sub-pixel and third sub-pixel level are vertically arranged, 4th sub-pixel is white or clear subpixel, every one the 4th sub-pixel is equipped with induction electrode article close to the liquid crystal layer side, and a plurality of induction electrode item is connected to form a touch-control sensing electrode；Array substrate includes the first pixel electrode corresponding with the first sub-pixel, the second sub-pixel, third sub-pixel and the 4th sub-pixel, the second pixel electrode, third pixel electrode and white space, and each induction electrode item and white space are corresponding.The signal-to-noise ratio of touch panel can be improved in touch-control display panel provided by the invention and display device.
Description
Technical field
The present invention relates to field of display technology, and in particular to a kind of touch-control display panel and display device.
Background technique
In general, mainstream capacitance type touch control sensing technology currently on the market is projecting type capacitor touch-control sensing technology,
Two kinds of mutual capacitance (Mutual capacitance) and self-capacitance (Self capacitance) can be divided into.Mutual capacitance touch-control sensing
Technology is exactly the phenomenon that meeting generates capacitive coupling between neighbouring two layers of electrode when touching generation, and by electric capacitance change Lai really
Determine the generation of touch action.Self-capacitance touch-control sensing technology is exactly that capacitive coupling is generated between touch control object and electrode, and measuring electrode
Electric capacitance change, to determine the generation of touch action.
For mutual capacitance touch-control display panel, as shown in Figure 1, include the upper substrate 11 and lower substrate 12 being oppositely arranged, with
And it is set to the liquid crystal layer 14 between upper substrate 11 and lower substrate 12, lower substrate 12 is equipped with pixel electrode 124, touch-control sensing electrode
Rx112 is set to upper substrate 11, and touch-driven electrode Tx122 is set to lower substrate.Apply gray scale voltage, touch-control to pixel electrode 124
Display panel normally shows picture, and when carrying out touch-control, the arrangement of the liquid crystal molecule in liquid crystal layer 14 constantly becomes with display picture
Change, causes the coupled capacitor between touch-control sensing electrode Rx112 and touch-driven electrode Tx122 unstable, cause touch-control sensing
Detect the difficulty of capacitance variations.In addition, the signal of touch-driven electrode Tx122 can be by 124 interference shielding of pixel electrode, touch-control letter
Number line can not be effectively transferred to touch-control sensing electrode Rx112, and entire touch-control sensing electrode Rx112 have finger can not
The touching signals line that effect ground changes touch-driven electrode Tx122 is projected to the coupled capacitor between touch-control sensing electrode Rx, so that
Touch-control display panel signal-to-noise ratio (SNR) is very low.And for self-capacitance touch-control display panel, touch-control sensing electrode Rx112 can
The touch-control of finger is detected, however entire touch-control sensing electrode Rx112 affects sense of the touch-driven electrode Tx122 to finger
It answers, the difficulty for equally causing touch-control sensing to detect.
Therefore, the signal-to-noise ratio of the touch-driven electrode Tx122 of embedded capacitance touching control panel and touch-control sensing electrode Rx112
It is too low and cause touch-control sensing bad, it causes design cost excessively high and application is upper difficult.
Summary of the invention
The purpose of the present invention is to provide a kind of touch-control display panel and display devices, to improve the noise of touch panel
Than also having the function of view angle switch.
It is that it is realized by adopting the following technical scheme that the present invention, which solves its technical problem,.
A kind of touch-control display panel including the array substrate being oppositely arranged and color membrane substrates, and is located at the array substrate
Liquid crystal layer between the color membrane substrates, the color membrane substrates include multiple pixel regions in matrix distribution；
Each pixel region includes the first sub-pixel, the second sub-pixel, third sub-pixel and the 4th sub-pixel, first son
Pixel, second sub-pixel and the third sub-pixel arrange in the same direction, the 4th sub-pixel and first sub-pixel, this
Two sub-pixels and the third sub-pixel level are vertically arranged, the 4th sub-pixel be white or clear subpixel, every one the 4th
Sub-pixel is equipped with induction electrode item close to the liquid crystal layer side, and a plurality of induction electrode item is connected to form a touch-control sensing electrode；
The array substrate includes and first sub-pixel, second sub-pixel, the third sub-pixel and the 4th sub-pixel
Corresponding first pixel electrode, the second pixel electrode, third pixel electrode and white space, each induction electrode item and a blank
Region is corresponding.
Further, which is in that periodic arrangement lines up multiple row in the horizontal direction, which is item
Shape electrode.
Further, which is in that periodic arrangement lines up multiple row in the horizontal direction, which is comb
Shape structure, the induction electrode item include horizontal stripe portion and the perpendicular electrical connection section being connected that horizontal direction extends.
Further, each induction electrode item further includes a metallic signal lines, the metallic signal lines and the induction electrode item
It connects and extending direction is identical as the extending direction of the induction electrode item.
Further, which is equipped with multiple public electrode items, which extends perpendicularly to
The extending direction of the induction electrode item, the public electrode item are multiplexed with touch-driven electrode.
Further, which further includes the driving IC being set in the array substrate, driving IC with should
Touch-driven electrode connection, in the touch-control stage, driving IC is connect by inputting touch drive signal to the touch-driven electrode
Receive the feedback signal of touch-driven electrode output；In the display stage, public voltage signal is inputted to the touch-driven electrode.
Further, which includes black matrix, first sub-pixel, second sub-pixel, the third sub-pixel
It is respectively positioned in the open region of the black matrix with the 4th sub-pixel.
Further, which is multiplexed with viewing angle control electrode, which is not applied to biased electrical
When pressure, which is that wide viewing angle is shown；When the viewing angle control electrode is applied bias voltage, the touch-control display surface
Plate is that narrow viewing angle is shown.
Further, which includes black matrix, first sub-pixel, second sub-pixel and the third sub-pixel
In the open region of the black matrix, the 4th sub-pixel is covered by the black matrix.
A kind of display device, including touch-control display panel described above.
Touch-control display panel provided by the invention and display device, non-each pixel is divided into the first sub- picture on color membrane substrates
Element, the second sub-pixel, third sub-pixel and the 4th sub-pixel, the 4th sub-pixel are white or clear subpixel, the 4th sub-pixel
Side is equipped with the induction electrode item of strip, and takes away the pixel electrode on induction electrode corresponding array substrate to form blank area
Domain, while the entire public electrode in array substrate side is cut into multiple public electrode items, public electrode item and touch-control driving
Electrode shares, and a plurality of induction electrode item, which is connected, is used as a touch-control sensing electrode, touch-control sensing electrode and touch-driven electrode it
Between Liquid Crystal Molecules Alignment fix, coupled capacitor between the two is fixed, and the touching signals of touch-driven electrode can be effectively
It is projected to touch-control sensing electrode, and the touching signals of touch-driven electrode can be changed by finger to change touch-control driving electricity
Coupled capacitor between pole and touch-control sensing electrode, to improve the signal-to-noise ratio of touch-control display panel.Meanwhile touch-control sensing electrode is also
It can be used as viewing angle control electrode, the voltage of control viewing angle control electrode switches touch-control display panel between width visual angle.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of touch-control display panel in the prior art.
Fig. 2 is the floor map of the touch-control display panel of first embodiment of the invention.
Fig. 3 is the floor map of color membrane substrates in touch-control display panel shown in Fig. 2.
The touch-control display panel that Fig. 4 is Fig. 2 is under wide viewing angle mode along the diagrammatic cross-section of I-I line.
The touch-control display panel that Fig. 5 is Fig. 2 is under narrow viewing angle mode along the diagrammatic cross-section of I-I line.
Fig. 6 is the floor map of the touch-control display panel of second embodiment of the invention.
Fig. 7 is the floor map of color membrane substrates in touch-control display panel shown in fig. 6.
Fig. 8 is the schematic diagram that touch-control display panel shown in fig. 6 is not touched.
Fig. 9 is schematic diagram when touch-control display panel shown in fig. 6 is touched.
The touch-control display panel that Figure 10 is Fig. 6 is under wide viewing angle mode along the diagrammatic cross-section of II-II line.
The touch-control display panel that Figure 11 is Fig. 6 is under narrow viewing angle mode along the diagrammatic cross-section of II-II line.
Figure 12 A is the floor map of the touch-control display panel color membrane substrates of third embodiment of the invention.
Figure 12 B is the diagrammatic cross-section in Figure 12 A along III-III line.
Figure 13 is the floor map of the touch-control display panel of fourth embodiment of the invention.
Figure 14 A is the floor map of color membrane substrates in the touch-control display panel of Figure 13.
Figure 14 B is the diagrammatic cross-section in Figure 14 A along V-V line.
Figure 15 is the floor map of the color membrane substrates of the touch-control display panel of fifth embodiment of the invention.
Specific embodiment
It is of the invention to reach the technical approach and effect that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Accompanying drawings and embodiments, to a specific embodiment of the invention, structure, feature and its effect, detailed description is as follows.
[first embodiment]
Fig. 2 is the floor map of the touch-control display panel of first embodiment of the invention.Fig. 3 is aobvious for touch-control shown in Fig. 2
Show the floor map of color membrane substrates in panel.Fig. 4 is signal of the touch-control display panel shown in Fig. 2 under wide viewing angle mode
Figure.Fig. 5 is schematic diagram schematic diagram of the touch-control display panel shown in Fig. 2 in narrow viewing angle.It please join Fig. 2 to Fig. 5, the present embodiment provides
Touch-control display panel 20 include the array substrate 24 that is oppositely arranged and color membrane substrates 22, and be located at the array substrate 24 and should
Liquid crystal layer 26 between color membrane substrates 22.
As shown in figure 3, the color membrane substrates 22 include multiple pixel regions in matrix distribution.Wherein, each pixel region
Including the first sub-pixel 221, the second sub-pixel 222, third sub-pixel 223 and the 4th sub-pixel 224, the first sub-pixel 221,
Two sub-pixels 222, third sub-pixel 223 and the arrangement of 224 parallel vertical of the 4th sub-pixel.First sub-pixel 221, the second sub-pixel
222 and third sub-pixel 223 be color sub-pixel, the 4th sub-pixel 224 be white or clear subpixel.In the present embodiment, the
One sub-pixel 221, the second sub-pixel 222, third sub-pixel 223 and the 4th sub-pixel 224 shape be rectangle and four sub- pictures
The area of element is identical, and shape is identical, and four sub-pixels respectively account for a quarter of entire pixel region.
The color membrane substrates 22 include black matrix 226, first sub-pixel 221 in the present embodiment, second sub-pixel 222,
The third sub-pixel 223 and the 4th sub-pixel 224 are respectively positioned in the open region of the black matrix 226, i.e., between black matrix 226 is used for
Every each sub-pixel.
In the present embodiment, the first sub-pixel 221, the second sub-pixel 222, third sub-pixel 223 and the 4th sub-pixel 224 exist
Horizontal directions replace arrangement, in vertical direction repeated arrangement.As shown in Figures 2 and 4, every one the 4th sub-pixel 224 is close
26 side of liquid crystal layer is equipped with an induction electrode item 225, and induction electrode item 225 extends along vertical direction.Feel in the present embodiment
Electrode strip 225 is answered to extend along data line direction, wherein a plurality of induction electrode item 225 is connected to form a touch-control sensing electrode.Tool
In the present embodiment, every three adjacent induction electrode items 225 are connected to form a touch-control sensing electrode to body.
Each induction electrode item 225 further includes a metallic signal lines 227, the metallic signal lines 227 and the induction electrode item
225 connect and extend in same direction with the induction electrode item 225.By the metallic signal lines 227 to induction electrode
Item 225 applies view angle switch signal and induction touching signals, and metallic signal lines 227 are configured under black matrix 226, can reduce sense
Answer the load impedance of electrode strip 225.
The array substrate 24 include with first sub-pixel 221, second sub-pixel 222, the third sub-pixel 223 and should
Corresponding first pixel electrode 241 of 4th sub-pixel 224, the second pixel electrode 242, third pixel electrode 243 and white space
244, specifically, the first sub-pixel 221 is corresponding with the first about 241 pixel electrode, the second sub-pixel 222 and the second pixel electrode
About 242 is corresponding, and third sub-pixel 223 and about 243 third pixel electrode are corresponding, the 4th sub-pixel 224 and white space 244
It is corresponding up and down.In the present embodiment, induction electrode article 225 and white space 244 in 224 lower section of the 4th sub-pixel are corresponding.
Specifically as shown in Fig. 2, each pixel electrode passes through a thin film transistor (TFT) (TFT) and closes on the data line of the pixel electrode
(figure unlabeled) and scan line (figure is unlabeled) be connected, and white space 244 is not provided with pixel electrode, corresponding film crystalline substance
Body pipe also can be omitted.
As shown in Figure 2 and Figure 3, each induction electrode item 225 is in periodic arrangement at more in the horizontal direction in the present embodiment
Column, the induction electrode item 225 are strip shaped electric poles.In the horizontal direction, it is wrapped between two induction electrode items 225 of arbitrary neighborhood
Include three different sub-pixels, such as red sub-pixel R, green sub-pixels G and blue subpixels B.
The array substrate 24 is equipped with multiple public electrode items 245, the extending direction of public electrode item 245 in the present embodiment
Perpendicular to the extending direction of the induction electrode item 225, each public electrode item 245 covers multirow pixel region, such as each public affairs
Common electrode item 245 covers two row pixel regions, and but it is not limited to this.In the present embodiment, which is touching
Driving electrodes are controlled, induction electrode item 225 (touch-control sensing electrode) and public electrode item 245 (touch-driven electrode) are set in a crisscross manner
It sets.It is understood that touch-driven electrode and public electrode can be separated and be independently arranged in touch-control display panel 20.
As shown in figure 4, the array substrate 24 includes underlay substrate 248, which is set to the underlay substrate
248, an insulating layer 247 is equipped between the public electrode item 245 and pixel electrode 240, to be spaced public electrode item 245 and picture
Plain electrode 240.It should be noted that the present invention only enumerates film layer structure related to the present invention, other film layer structures, which are not done, to be situated between
It continues.
As shown in Fig. 2, the touch-control display panel 20 further includes the driving IC246 being set in the array substrate 24, the drive
Dynamic IC246 is connect with the touch-driven electrode (public electrode item 245), and in the touch-control stage, driving IC246 is by the touch-control
Driving electrodes input touch drive signal, and receive the feedback signal of touch-driven electrode output；In the display stage, to the touching
It controls driving electrodes and inputs public voltage signal.
It should be noted that touch-control display panel 20 provided in this embodiment either mutual capacitance, be also possible to from
Capacitor.
For mutual capacitance touch-control display panel, in the present embodiment, as shown in Figure 4 and Figure 5, due in array substrate 24 with sense
It answers the corresponding pixel electrode in 225 region of electrode strip to take away and form white space 244, leads to touch-control sensing electricity in the region
Liquid Crystal Molecules Alignment between pole and touch-driven electrode is fixed.When not having finger touching, touch-control sensing electrode and touch-control are driven
Electric field line is formed between moving electrode, generates mutual capacitance, and the mutual capacitance between touch-control sensing electrode and touch-driven electrode is fixed
It is constant.When the finger of people touches touch-control display panel 20, electric field line is formed between touch-control sensing electrode and finger and generates electricity
Hold, generates variation so as to cause the mutual capacitance between touch-control sensing electrode and touch-driven electrode, charge measurement circuit can identify
The capacitor changed out to detect the touch position of finger, and then improves the accuracy for judging touch position, so that touch-control is aobvious
Show that the signal-to-noise ratio (SNR) of panel 20 improves.
For self-capacitance touch-control display panel, touch-control sensing electrode is made of the induction electrode item 225 of a plurality of strip, in people
Finger when touching screen, form electric field line between touch-control sensing electrode and finger and generate capacitor, while finger and touch-control drive
Also it will form electric field line between moving electrode and generate capacitor, be further coupled to touch-control without the capacitance variations through touch-control sensing electrode and drive
Moving electrode, and then promote the signal-to-noise ratio of touch-control display panel 20.
The also changeable width visual angle of touch-control display panel 20 provided in this embodiment.Specifically, induction electrode item 225 and view
Angle coordination electrode shares, when induction electrode item 225 is as viewing angle control electrode and is not applied to voltage, the touch-control display panel
20 show for wide viewing angle；When the viewing angle control electrode is applied bias voltage, which is that narrow viewing angle is shown.
In the present embodiment, the liquid crystal molecule in liquid crystal layer 26 is positive liquid crystal molecules.In original state (i.e. touch-control display surface
Plate 20 does not apply the situation of any voltage) under, the positive liquid crystal molecules in liquid crystal layer 26 are in lying posture, positive liquid crystal molecules
Long axis direction is substantially parallel with the surface of substrate.
Wide viewing angle mode: as shown in figure 4, to first pixel electrode 241, the second pixel electrode 242 and the third pixel
Electrode 243 applies gray scale voltage, such as 0~4V of alternating voltage, applies the DC voltage of 0V, the visual angle to public electrode item 245
Voltage, i.e. the liquid crystal molecule two sides no applied voltage in 225 corresponding region of viewing angle control electrode is not added in coordination electrode 225,
There is no electric field presence in this region between array substrate 24 and color membrane substrates 22, liquid crystal molecule still keeps lying posture.Pixel
The liquid crystal molecule of 240 corresponding region of electrode is controlled inclined by the boundary electric field generated between pixel electrode 240 and public electrode item 245
Turn, touch-control display panel 20 is the wide viewing angle display pattern of normality at this time.
Narrow viewing angle mode: as shown in figure 5, applying bias voltage to the viewing angle control electrode 225, to the public electrode item
245 apply reference voltage, apply gray scale voltage to pixel electrode, such as apply the alternating voltage of 3V to the viewing angle control electrode,
Apply 0V DC voltage to the public electrode item 245.It is formed between the viewing angle control electrode 225 and the public electrode item 245 equal
Even vertical electric field, positive liquid crystal molecules deflect to vertical station from lying posture to parallel electric field direction under the action of vertical electric field
Standing position state, in terms of positive visual angle, liquid crystal molecule is in a vertical state, and liquid crystal cell does not generate phase delay, in orthogonal polarizer (figure
It is not shown) the 4th sub-pixel 224 shows black state down for effect；And in terms of side view angle, liquid crystal molecule is in heeling condition, produces phase
Position delay, there is light leakage in the 4th sub-pixel 224 under orthogonal polarizer, so that wide viewing angle pattern switching is narrow viewing angle.
It should be noted that the embodiment of the present invention, under narrow viewing angle mode, dark-state light leakage improves clearly, therefore narrow view
The contrast at angle greatly promotes.Since the promotion of contrast influences the effect of narrow viewing angle, viewing angle control region
Aperture opening ratio need the aperture opening ratio more than or equal to color sub-pixel to ensure the effect of narrow viewing angle.In addition, the present embodiment because
In viewing angle control region, there are vertical electric field between upper and lower base plate, there is no electric field in horizontal direction, Liquid Crystal Molecules Alignment only by
The influence of vertical electric field, light leakage is bigger, and the contrast of narrow viewing angle is substantially improved, and can avoid when narrow viewing angle shows wide-angle, out
The problem of existing gray-scale inversion.
The embodiment of the present invention also provides a kind of display device, including touch-control display panel 20 described above.
In conclusion touch-control display panel 20 provided by the invention and display device, each pixel point on color membrane substrates 22
For the first sub-pixel 221, the second sub-pixel 222, third sub-pixel 223 and the 4th sub-pixel 224, the 4th sub-pixel 224 is white
Color or clear subpixel, 224 side of the 4th sub-pixel are equipped with the induction electrode article 225 of strip, and induction electrode item 225 is corresponding
Pixel electrode in array substrate 24 is taken away to form white space 244, while by the entire public electrode in 24 side of array substrate
Multiple public electrode items 245 are cut into, public electrode item 245 and touch-driven electrode share, and a plurality of induction electrode item 225 is connected
As a touch-control sensing electrode, the Liquid Crystal Molecules Alignment between touch-control sensing electrode and touch-driven electrode is fixed, and touch-control drives
The touching signals of moving electrode can effectively be projected to touch-control sensing electrode, and coupled capacitor between the two is fixed, when finger touches
When touching screen, electric heating melting is formed between finger and touch-control sensing electrode, so as to cause touch-control sensing electrode and touch-driven electrode
Between coupled capacitor generate variation, and then the touch position of finger is detected, to improve the signal-to-noise ratio of touch-control display panel 20.
Meanwhile touch-control sensing electrode is alternatively arranged as viewing angle control electrode, the voltage of control viewing angle control electrode makes touch-control display panel
20 switch between width visual angle.
[second embodiment]
As shown in FIG. 6 and 7, the touch-control display panel 20 that second embodiment of the invention provides and above-mentioned first embodiment
Difference is, in the present embodiment, which is pectinate texture, and induction electrode item 225 includes what horizontal direction extended
Horizontal stripe portion 2252 and the perpendicular electrical connection section 2254 being connected.The extending direction of the electrical connection section 2254 and the induction electrode item
225 extending direction is identical.In the present embodiment, every three adjacent induction electrode items 225 are connected to form a touch-control sensing electricity
Pole.
Whether display screen has mainly is detected between touch-driven electrode 245 and touch-control sensing electrode 225 by touch-control
Capacitance change.As shown in figure 8, when there is no finger touching, touch-driven electrode 245 and touch-control sensing electrode 225 it is each
Uniform fringe field line is formed between horizontal stripe portion 2252, generates mutual capacitance and mutual capacitance immobilizes, it will not be with display picture
Face and change.When the finger of people touches touch-control display panel 20, as shown in figure 9, touch-control sensing electrode 225 and finger form electricity
Field wire generates capacitor, changes so as to cause the mutual capacitance between touch-control sensing electrode 225 and touch-driven electrode 245, electricity
Lotus identification circuit will recognise that the capacitor of variation, to detect the touch position of finger, improve the essence for judging touch points position
Exactness.The present embodiment can increase touch-driven electrode 245 and touch-control by the design in the horizontal stripe portion 2252 of touch-control sensing electrode 225
Fringe field between induction electrode 225, capacitance variations caused by electric field line variation, are promoted when increasing finger touching screen
The signal-to-noise ratio of touch-control display panel 20.
The touch-control display panel 20 of the present embodiment has the function of width view angle switch.Figure 10 is the touch-control display surface of Fig. 6
Plate 20 is under wide viewing angle mode along the diagrammatic cross-section of II-II line.It please join Figure 10, the liquid crystal molecule in liquid crystal layer 26 is positivity liquid
Brilliant molecule.Positivity liquid under original state (i.e. touch-control display panel 20 do not apply any voltage situation), in liquid crystal layer 26
Brilliant molecule is in lying posture, and the long axis direction of positive liquid crystal molecules and the surface of substrate are substantially parallel.
Wide viewing angle mode: the viewing angle control electrode is in suspended state (voltage is not added), which applies base
Electric field is being not present in quasi- voltage, such as 0V between viewing angle control electrode 225 and public electrode item 245 in viewing angle control region,
Liquid crystal molecule keeps lying posture, therefore opaque.In display area, pixel electrode 240 is to electricity, pixel electrode 240 and common electrical
Electric field is formed between pole item 245, the normal display picture of liquid crystal molecule deflection, touch-control display panel 20 is wide viewing angle mode at this time.
Narrow viewing angle mode: the touch-control display panel 20 that Figure 11 is Fig. 6 is illustrated under narrow viewing angle mode along the section of II-II line
Figure.It please join Figure 11, apply bias voltage, such as the alternating voltage of 3V to the viewing angle control electrode 225, to the public electrode item
245 apply reference voltage such as 0V, and it is (electric in such as figure that vertical electric field is formed between viewing angle control electrode 225 and public electrode item 245
The field direction E), liquid crystal molecule yaw tilt under electric field action generates light leakage, wide viewing angle pattern switching in screen direction hypertropia
For narrow viewing angle mode.
About the other structures and working principle of the present embodiment, above-mentioned first embodiment may refer to, details are not described herein.
[3rd embodiment]
As illustrated in figs. 12 a and 12b, the present embodiment and the main distinction of above-mentioned first embodiment are: the 4th sub- picture
Element 224 is covered by black matrix 226, i.e., the induction electrode item 225 is covered opaque by black matrix 226.As shown in Figure 12 B, the sense
Electrode strip 225 is answered to be covered completely by black matrix 226, induction electrode item 225 can only be used as touch control electrode at this time, not switch width
The function at visual angle.
About the other structures and working principle of the present embodiment, above-mentioned first embodiment may refer to, details are not described herein.
[fourth embodiment]
As shown in figure 13, the difference of the touch-control display panel 20 that fourth embodiment of the invention provides and above-mentioned first embodiment
It is, in the present embodiment, the first sub-pixel 221, the second sub-pixel 222 and the arrangement of 223 parallel vertical of third sub-pixel, and respectively
It is vertically arranged with the 4th sub-pixel 224.4th sub-pixel 224 is horizontally arranged, and the 4th sub-pixel 224 is white or transparent sub- picture
Element, the 4th sub-pixel 224 are located at the top of the first sub-pixel 221, the second sub-pixel 222 and third sub-pixel 223.Wherein,
First sub-pixel 221, the second sub-pixel 222, third sub-pixel 223 and the 4th sub-pixel 224 shape be rectangle, and four sons
The area of pixel is identical, and shape is identical, respectively accounts for a quarter.4th sub-pixel 224 is equipped with induction towards 26 side of liquid crystal layer
Electrode strip 225, in the present embodiment, each induction electrode item 225 extends along scanning line direction, and induction electrode item 225 is strip electricity
Pole, but it is not limited to this, such as each induction electrode item 225 may be configured as by the electrode strip structure of a plurality of strip being spaced apart from each other
At.
As shown in Figure 14 A and Figure 14 B, the present embodiment by by each pixel region be averagely divided into the first sub-pixel 221,
224 4 second sub-pixel 222, third sub-pixel 223 and the 4th sub-pixel sub-pixels, under narrow viewing angle mode, viewing angle control
Vertical electric field is formed between electrode and public electrode item 245, in terms of positive visual angle, liquid crystal molecule is in a vertical state, and liquid crystal cell is not
Phase delay is generated, the 4th sub-pixel 224 shows black state under orthogonal polarizer (not shown go out) effect；And from side view angle
It sees, liquid crystal molecule is in heeling condition, produces phase delay, and leakage occurs in the 4th sub-pixel 224 under orthogonal polarizer
Light, to improve the visual angle of narrow viewing angle.
About the other structures and working principle of the present embodiment, above-mentioned first embodiment may refer to, details are not described herein.
[the 5th embodiment]
As shown in figure 15, the difference of the touch-control display panel 20 that fifth embodiment of the invention provides and above-mentioned fourth embodiment
It is, in the present embodiment, the 4th sub-pixel 224 is covered by black matrix 226, therefore opaque.So 224 lower section of the 4th sub-pixel
The not no view angle switch of induction electrode item 225 function.
About the other structures and working principle of the present embodiment, above-mentioned fourth embodiment may refer to, details are not described herein.
Herein, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, are removed
It comprising those of listed element, but also may include other elements that are not explicitly listed.
Herein, the nouns of locality such as related front, rear, top, and bottom are to be located in figure with components in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of touch-control display panel (20) including the array substrate (24) being oppositely arranged and color membrane substrates (22), and is located at
Liquid crystal layer (26) between the array substrate (24) and the color membrane substrates (22), the color membrane substrates (22) include being distributed in matrix
Multiple pixel regions；It is characterized by:
Each pixel region includes the first sub-pixel (221), the second sub-pixel (222), third sub-pixel (223) and the 4th sub- picture
Plain (224), first sub-pixel (221), second sub-pixel (222) and the third sub-pixel (223) arrange in the same direction,
4th sub-pixel (224) and first sub-pixel (221), second sub-pixel (222) and the third sub-pixel (223) are horizontal
Or be vertically arranged, the 4th sub-pixel (224) is white or clear subpixel, and every one the 4th sub-pixel (224) is close to the liquid crystal
Layer (26) side is equipped with induction electrode item (225), and a plurality of induction electrode item (225) is connected to form a touch-control sensing electrode；
The array substrate (24) includes and first sub-pixel (221), second sub-pixel (222), the third sub-pixel (223)
And the 4th corresponding first pixel electrode (241) of sub-pixel (224), the second pixel electrode (242), third pixel electrode
(243) and white space (244), each induction electrode item (225) and a white space (244) are corresponding.
2. touch-control display panel (20) as described in claim 1, which is characterized in that the induction electrode item (225) is along level side
Multiple row is lined up in periodic arrangement, which is strip shaped electric poles.
3. touch-control display panel (20) as described in claim 1, which is characterized in that the induction electrode item (225) is along level side
Multiple row is lined up in periodic arrangement, which is pectinate texture, which includes level
Horizontal stripe portion (2252) and the perpendicular electrical connection section (2254) being connected that direction extends.
4. touch-control display panel (20) as described in claim 1, which is characterized in that each induction electrode item (225) further includes
One metallic signal lines (227), the metallic signal lines (227) and the induction electrode item (225) contact connectio and extending direction and this
The extending direction of induction electrode item (225) is identical.
5. touch-control display panel (20) as described in claim 1, which is characterized in that the array substrate (24) is equipped with multiple public affairs
Common electrode item (245), the extending direction for extending perpendicularly to the induction electrode item (225) of the public electrode item (245) should
Public electrode item (245) is multiplexed with touch-driven electrode.
6. touch-control display panel (20) as claimed in claim 5, which is characterized in that the touch-control display panel (20) further includes setting
The driving IC (246) being placed in the array substrate (24), driving IC (246) is connect with the touch-driven electrode, in touch-control rank
Section, driving IC (246) receive touch-driven electrode output by inputting touch drive signal to the touch-driven electrode
Feedback signal；In the display stage, public voltage signal is inputted to the touch-driven electrode.
7. touch-control display panel (20) according to any one of claims 1-4, which is characterized in that the color membrane substrates (22) include
Black matrix (226), first sub-pixel (221), second sub-pixel (222), the third sub-pixel (223) and the 4th sub- picture
Plain (224) are respectively positioned in the open region of the black matrix (226).
8. touch-control display panel (20) as claimed in claim 7, which is characterized in that the induction electrode item (225) is multiplexed with view
Angle coordination electrode, when which is not applied to voltage, which is that wide viewing angle is shown；When the view
When angle coordination electrode is applied bias voltage, which is that narrow viewing angle is shown.
9. touch-control display panel (20) according to any one of claims 1-4, which is characterized in that the color membrane substrates (22) include
Black matrix (226), first sub-pixel (221), second sub-pixel (222) and the third sub-pixel (223) are located at the black square
In the open region of battle array (226), the 4th sub-pixel (224) is covered by the black matrix (226).
10. a kind of display device, which is characterized in that including such as described in any item touch-control display panels of claim 1-9 (20).
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