CN202929599U - Semi-transmission semi-reflection type embedded touch screen and display device - Google Patents
Semi-transmission semi-reflection type embedded touch screen and display device Download PDFInfo
- Publication number
- CN202929599U CN202929599U CN 201220652559 CN201220652559U CN202929599U CN 202929599 U CN202929599 U CN 202929599U CN 201220652559 CN201220652559 CN 201220652559 CN 201220652559 U CN201220652559 U CN 201220652559U CN 202929599 U CN202929599 U CN 202929599U
- Authority
- CN
- China
- Prior art keywords
- touch
- liquid crystal
- screen
- electrode
- crystal layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Position Input By Displaying (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model discloses a semi-transmission semi-reflection type embedded touch screen and a display device. A transmission zone and a reflection zone are formed in each pixel unit, wherein the thickness of a liquid crystal layer of the transmission zone is bigger than that of a liquid crystal layer of the reflection zone; an optical delay layer and a reflection layer are formed in an area, which is corresponding to the reflection zone, of a TFT (Thin Film Transistor) array substrate; as the liquid crystal layers with different thicknesses have different delay actions on the light after being electrified, the optical delay difference caused by the different delay actions can be compensated by the optical delay layer, so that gray scales of the reflection zone and the transmission zone in one pixel unit can be kept consistent under the statuses of switching on and off the electric fields, thereby achieving the semi-transmission semi-reflection type display effect. A touch induction electrode is arranged on a colorful film base plate, and a touch drive wire is arranged between pixel units of adjacent rows on the TFT array substrate to achieve a touch function; and a time-sharing driving way is adopted during the touch stage and the display stage, so that the mutual interference of the display and the touch is reduced, and the picture quality and the touch accuracy are improved.
Description
Technical field
The utility model relates to the display technique field, relates in particular to the embedded touch-screen of a kind of Transflective and display device.
Background technology
Along with the develop rapidly of display technique, touch-screen (Touch Screen Panel) spreads all in people's life gradually.At present, touch-screen can be divided into according to forming structure: external hanging type touch-screen (Add on Mode Touch Panel), covering surfaces formula touch-screen (On Cell Touch Panel) and embedded touch-screen (In Cell Touch Panel).Wherein, the external hanging type touch-screen is with touch-screen and LCDs (Liquid Crystal Display, LCD) separately produce, then fitting to becomes the LCDs with touch function together, and there are the shortcomings such as cost of manufacture is higher, light transmission rate is lower, module is thicker in the external hanging type touch-screen.And embedded touch-screen is embedded in LCDs inside with the touch-control electrode of touch-screen, and thickness that can attenuate module integral body can reduce again the cost of manufacture of touch-screen greatly, is subject to the favor of each large panel producer.
Liquid crystal panel is passive luminescent device, and it can be divided into according to lighting source: reflective, transmission-type and Transflective.Wherein, reflection type liquid crystal panel is to utilize liquid crystal panel surround lighting on every side to be used as lighting source, be provided with the reflecting surface for reflect ambient light in reflection type liquid crystal panel, reflection type liquid crystal panel is because self does not have backlight, its power consumption is relatively low, but in the partially dark situation of surround lighting around, picture is difficult for watching, with the many restrictions on using.Transmissive liquid crystal panel is at the back side of thin-film transistor array base-plate, backlight to be set, and utilizes bias light that backlight sends to see through the debugging of liquid crystal panel, and showing needs picture, and the electric energy of backlight is provided due to needs, makes its power consumption relatively high.
And the Transflective liquid crystal panel combines the characteristics of transmission-type and reflection type liquid crystal panel, possess simultaneously backlight and reflection horizon, both can utilize in use the backlight of self also can utilize surround lighting, have both advantages concurrently, no matter can provide the good quality of watching to the user under high light or under dim environment.
At present, in prior art also not based on the design of the embedded touch-screen of Transflective lcd technology.
The utility model content
The utility model embodiment provides the embedded touch-screen of a kind of Transflective and display device, in order to realize the embedded touch-screen under semi-transparent semi-reflecting display mode.
The utility model embodiment provides a kind of Transflective embedded touch-screen, comprising: color membrane substrates, thin film transistor (TFT) tft array substrate, and the liquid crystal layer between described color membrane substrates and described tft array substrate; Be formed with a plurality of pixel cells that are the matrix arrangement in the embedded touch-screen of described Transflective, be provided with transmission area and echo area at each pixel cell;
The thickness of the liquid crystal layer of described transmission area is greater than the thickness of the liquid crystal layer of described echo area; And described tft array substrate is provided with optical retarder and metallic reflector in the echo area; Described optical retarder is used for the light delay that compensation is caused by the thickness difference of the liquid crystal layer of the liquid crystal layer of described transmission area and described echo area;
Described color membrane substrates has many touch-control sensing electrodes that extend along the line direction of pixel cell;
Described tft array substrate has many touch-control drive wires of the gap location between the pixel cell of adjacent columns, the data signal line mutually insulated in each described touch-control drive wire and tft array substrate.
The utility model embodiment provides a kind of display device, comprises the embedded touch-screen of Transflective that the utility model embodiment provides.
The beneficial effect of the utility model embodiment comprises:
The embedded touch-screen of a kind of Transflective and display device that the utility model embodiment provides, transmission area and echo area are set in each pixel cell, the thickness of the liquid crystal layer of transmission area is greater than the thickness of the liquid crystal layer of echo area, tft array substrate arranges optical retarder and reflection horizon in zone corresponding to echo area, optical retarder is used for the light delay that compensation is caused by the thickness difference of the liquid crystal layer of the liquid crystal layer of transmission area and echo area; In procedure for displaying, because the thickness of the liquid crystal layer of transmission area and echo area is different, after energising, the liquid crystal layer of different-thickness can have different delayed-actions to light, optical retarder is set in the echo area can compensates the light delay difference that causes thus, make one in pixel cell the echo area and the light transmission rate of transmission area mutually mate, and, electric field open with the state that closes under can keep in a pixel cell GTG consistent, thereby reach the Transflective display effect.The touch-control sensing electrode is set on color membrane substrates, the touch-control drive wire of the gap location setting between the pixel cell of adjacent columns on tft array substrate and data signal line insulation, touch-control drive wire and touch-control sensing electrode are carried out the timesharing driving, with compatible touch controllable function and display effect.And, owing to adopting the timesharing type of drive at touch-control and demonstration stage, can reduce the mutual interference mutually that shows with touch-control, improve picture quality and touch-control accuracy.
Description of drawings
The structural representation of the embedded touch-screen of Transflective when not switching on that Fig. 1 a provides for the utility model embodiment;
The light simulation drawing of the embedded touch-screen of Transflective when not switching on that Fig. 1 b provides for the utility model embodiment;
Structural representation after the embedded touch-screen of Transflective that Fig. 2 a provides for the utility model embodiment is switched on;
Light simulation drawing after the embedded touch-screen of Transflective that Fig. 2 b provides for the utility model embodiment is switched on;
The schematic top plan view of tft array substrate in the embedded touch-screen of Transflective that Fig. 3 provides for the utility model embodiment;
The working timing figure of the embedded touch-screen of Transflective that Fig. 4 provides for the utility model embodiment;
The schematic top plan view of public electrode pattern in the embedded touch-screen of Transflective that Fig. 5 provides for the utility model embodiment;
One of color membrane substrates in the embedded touch-screen of Transflective that Fig. 6 provides for the utility model embodiment and tft array substrate structural representation after to box;
Two of color membrane substrates in the embedded touch-screen of Transflective that Fig. 7 provides for the utility model embodiment and the tft array substrate structural representation after to box.
Embodiment
Below in conjunction with accompanying drawing, the embedded touch-screen of Transflective that the utility model embodiment is provided and the embodiment of display device are described in detail.
In accompanying drawing, the thickness of each layer film and shape do not reflect the true ratio of array base palte and color membrane substrates, and purpose is signal explanation the utility model content just.
The schematic top plan view of tft array substrate in Fig. 1 a and the horizontal section schematic diagram that is respectively the embedded touch-screen of condenser type that the utility model embodiment provides shown in Figure 3 and touch-screen.As Fig. 1 a and shown in Figure 3, the embedded touch-screen of the Transflective that the utility model embodiment provides specifically comprises: color membrane substrates 1, thin film transistor (TFT) tft array substrate 2, and the liquid crystal layer 3 between color membrane substrates 1 and tft array substrate 2, be formed with a plurality of pixel cells 4 that are the matrix arrangement in the embedded touch-screen of Transflective, be provided with transmission area and echo area at each pixel cell;
The thickness of the liquid crystal layer 3 of transmission area is greater than the thickness of the liquid crystal layer 3 of echo area; And tft array substrate 2 is provided with optical retarder 5 and metallic reflector 6 in the echo area; Optical retarder 5 is used for the light delay that compensation is caused by the thickness difference of the liquid crystal layer 3 of transmission area and the liquid crystal layer 3 of echo area;
Color membrane substrates 1 has many touch-control sensing electrodes 7 that extend along the line direction of pixel cell 4;
The embedded touch-screen of a kind of Transflective that the utility model embodiment provides, transmission area and echo area are set in each pixel cell, the thickness of the liquid crystal layer of transmission area is greater than the thickness of the liquid crystal layer of echo area, tft array substrate arranges optical retarder and reflection horizon in zone corresponding to echo area, optical retarder is used for the light delay that compensation is caused by the thickness difference of the liquid crystal layer of the liquid crystal layer of transmission area and echo area; In procedure for displaying, because the thickness of the liquid crystal layer of transmission area and echo area is different, after energising, the liquid crystal layer of different-thickness can have different delayed-actions to light, optical retarder is set in the echo area can compensates the light delay difference that causes thus, make one in pixel cell the echo area and the light transmission rate of transmission area mutually mate, and, electric field open with the state that closes under can keep in a pixel cell GTG consistent, thereby reach the Transflective display effect.
In the specific implementation, the thickness of liquid crystal layer of transmission area is generally the twice of the thickness of liquid crystal layer of echo area; Optical retarder is generally the quarter-wave optical retarder; In each pixel cell, the area of metallic reflector generally accounts for half of open area area.
The below carries out brief description to the semi-transparent semi-reflecting principle of work of above-mentioned Transflective touch-screen, particularly, the thickness of liquid crystal layer that below is all (λ/4) optical retarder and transmission area take optical retarder as quarter-wave describes as the twice of the thickness of liquid crystal layer of echo area as example.
As shown in Figure 1a; color membrane substrates 1 dorsad the one side of liquid crystal layer 3 the first polaroid 10 can be set usually; tft array substrate 2 dorsad the one side of liquid crystal layer 3 the second polaroid 11 can be set usually; the light transmission direction of principal axis of the first polaroid 10 is set to along surface level, and it is inside that the light transmission direction of principal axis of the second polaroid 11 is set to vertical paper.Towards the one side of liquid crystal layer, the first alignment films 12 can be set usually at color membrane substrates 1, be set to along surface level towards the frictional direction that the one side of liquid crystal layer 3 can arrange the second alignment films 13, the first alignment films 12 and the second alignment films 13 usually at tft array substrate 2.
As shown in Figure 1a, at touch-screen not during making alive, transmission area and echo area (in Fig. 1 a shown in wire frame) all are details in a play not acted out on stage, but told through dialogues, its concrete light simulation drawing is as shown in Fig. 1 b: in the echo area, along surface level, surround lighting is by the first rear generation horizontal direction of polaroid 10 linearly polarized light due to the light transmission direction of principal axis of the first polaroid 10; Because liquid crystal molecule in the liquid crystal layer 3 of echo area is parallel-oriented, the horizontal direction linearly polarized light through after liquid crystal layer 3 without delayed-action; The horizontal direction linearly polarized light becomes left circularly polarized light after the phase delay of λ/4 optical retarder 5; Left circularly polarized light is through the right-circularly polarized light that reflects to form of metallic reflector 6; After process λ/4 optical retarder 5, right-circularly polarized light forms the vertical direction linearly polarized light; Without delayed-action, this moment, the polarization direction of vertical direction linearly polarized light was mutually vertical with the light transmission direction of principal axis of the first polaroid 10 after through the liquid crystal layer 3 of echo area for the vertical direction linearly polarized light, thereby in echo area formation details in a play not acted out on stage, but told through dialogues.In transmission area, because the vertical paper of light transmission direction of principal axis of the second polaroid 11 is inside, what backlight sent is backlight through the second polaroid 11 effect generation vertical direction linearly polarized lights; Because liquid crystal molecule in the liquid crystal layer 3 of transmission area is parallel-oriented, the vertical direction linearly polarized light through after liquid crystal layer without delayed-action, this moment, the polarization direction of vertical direction linearly polarized light was mutually vertical with the light transmission direction of principal axis of the first polaroid 10, thereby formed details in a play not acted out on stage, but told through dialogues at transmission area.
When the liquid crystal panel making alive, the deflection under the effect of field effect of liquid crystal molecule in the liquid crystal layer 3 of transmission area and echo area is arranged, phase delay occurs in polarized light when the liquid crystal molecule by deflecting, as shown in Fig. 2 a, because liquid crystal layer 3 thickness of transmission area and echo area are different, they are also different to carryover effects of polarized light, play λ/2 light delay effects at the liquid crystal layer 3 of transmission area, and the liquid crystal layer 3 in the echo area plays λ/4 light delay effects.
After the liquid crystal panel making alive, transmission area and echo area all are bright field, its concrete light simulation drawing is as shown in Fig. 2 b: in the echo area, along surface level, surround lighting is by the first rear generation horizontal direction of polaroid 10 linearly polarized light due to the light transmission direction of principal axis of the first polaroid 10; Because the liquid crystal layer 3 of echo area plays λ/4 light delay effects, become left circularly polarized light after the phase delay of horizontal direction linearly polarized light through the liquid crystal layer 3 of echo area; Left circularly polarized light becomes the horizontal direction linearly polarized light after the phase delay of λ/4 optical retarder 5; The horizontal direction linearly polarized light forms left circularly polarized light through the reflection of metallic reflector 6 and through after λ/4 optical retarder 5; Become the horizontal direction linearly polarized light after the phase delay of left circularly polarized light through the liquid crystal layer 3 of echo area, this moment, the polarization direction of horizontal direction linearly polarized light was parallel with the light transmission direction of principal axis of the first polaroid 10, thereby formed bright field in the echo area.In transmission area, because the vertical paper of light transmission direction of principal axis of the second polaroid 11 is inside, what backlight sent is backlight through the second polaroid 11 effect generation vertical direction linearly polarized lights; Because the liquid crystal layer 3 of transmission area plays λ/2 light delay effects, become the horizontal direction linearly polarized light after the phase delay of vertical direction linearly polarized light through the liquid crystal layer 3 of transmission area, this moment, the polarization direction of horizontal direction linearly polarized light was parallel with the light transmission direction of principal axis of the first polaroid 10, thereby formed bright field at transmission area.
The above-mentioned touch-screen that the utility model embodiment provides is on the basis of realizing semi-transparent semi-reflecting display effect, the touch-control sensing electrode is set on color membrane substrates, the touch-control drive wire of the gap location setting between the pixel cell of adjacent columns on tft array substrate and data signal line insulation, touch-control drive wire and touch-control sensing electrode are carried out the timesharing driving, with compatible touch controllable function and display effect.And, owing to adopting the timesharing type of drive at touch-control and demonstration stage, can reduce the mutual interference mutually that shows with touch-control, improve picture quality and touch-control accuracy.
Particularly, the driving method of the embedded touch-screen of above-mentioned Transflective that the utility model embodiment provides, sequential chart as shown in Figure 4 specifically comprises:
At first, touch-screen is shown that the time of each frame (Vsync) is divided into displaying time section (Display) and touch-control time period (Touch), for example in driving sequential chart shown in Figure 4, the time of demonstration one frame of touch-screen is 16.67ms, choose wherein 4ms as the touch-control time period, other 12.67ms is as the displaying time section, can certainly be according to the processing power of IC chip suitable both durations of adjustment are not specifically limited at this.
At displaying time section (Display), to every in touch-screen signal line G1, G2 ... Gn applies scanning gate signal successively, and data signal line Data is applied the GTG signal, controls the liquid crystal molecule upset; Be as good as with normal ADS type liquid crystal panel principle of work during this period of time.In the displaying time section, touch-control sensing electrode Rx ground connection namely loads 0V voltage, the input of touch-control drive wire Tx no signal.
At touch-control time period (Touch), Tx applies touch scanning signals to the touch-control drive electrode, voltage signal and the output of touch-control sensing electrode Rx coupling touch scanning signals.By the touch of finger, change the inductance capacitance between two electrodes of position, touch point, thereby change the size of the end receiver voltage signal of touch-control sensing electrode Rx, realize touch controllable function.In the touch-control time period, every signal line in touch-screen and the input of data signal line no signal.
The above-mentioned touch-screen that the utility model embodiment provides goes for the lcd technology of various patterns, for example go for to realize the plane internal switch (IPS at wide visual angle, In-Plane Switch) and senior super dimension field switch (ADS, Advanced Super Dimension Switch) type lcd technology, also go for traditional twisted-nematic (TN, Twisted Nematic) type lcd technology is not done restriction at this.
The below is described in detail the concrete structure of the touch-control drive wire of realizing touch controllable function in above-mentioned touch-screen.
In the specific implementation, data signal line in touch-control drive wire and tft array substrate can be arranged with layer, like this, do not need to increase extra preparation section when the preparation tft array substrate, only need to can form the figure of data signal line and touch-control drive electrode by a composition technique, can save preparation cost, the improving product added value.And, for fear of crosstalking between signal, when data signal line and touching signals line are arranged with layer, as shown in Figure 3, generally touch-control drive wire 8 and data signal line 9 are separately positioned on the both sides of pixel cell 4, disturb to avoid touch-control drive wire 8 with data signal line 9, signal to occur.
Usually, the precision of touch-screen is usually at grade, can be according to the density of required touch-control accuracy selection touch-control drive wire and touch-control sensing electrode and width guaranteeing required touch-control precision, when usually designing the touch-control drive wire, the spacing between can each touch-control drive wire is set to identical.
Particularly, because touch-control drive wire and data signal line all are arranged between the pixel cell of adjacent columns, and the gap between pixel cell generally only has 5 microns left and right usually, therefore, the width of each touch-control drive wire is also very thin, and this will cause the coupling capacitance less between touch-control drive wire and touch-control sensing electrode.In order to guarantee that the coupling capacitance between touch-control drive wire and touch-control sensing electrode reaches required numerical value, generally in the 3pF left and right, the touch-control drive wire can be adjacent with at least one pixel cell in metallic reflector be electrical connected by via hole, as shown in Figure 3, in the touch-control time period, the metallic reflector 6 that is electrical connected with touch-control drive wire 8 can increase the area of touch-control sensing, guarantees the required coupling capacitance of touch-control.In the specific implementation, generally according to required coupling capacitance, select the quantity of the metallic reflector of concrete touch-control drive wire connection, do not do restriction at this.
Usually, on the array base palte of tradition ADS type liquid crystal panel, public electrode is positioned at lower floor's (more close underlay substrate) as plate electrode, and pixel electrode is positioned at upper strata (more close liquid crystal layer) as gap electrode, is provided with insulation course between pixel electrode and public electrode.And on the array base palte of HADS type liquid crystal panel, pixel electrode is positioned at lower floor's (more close underlay substrate) as plate electrode, and public electrode is positioned at upper strata (more close liquid crystal layer) as gap electrode, is provided with insulation course between pixel electrode and public electrode.
Particularly, in order to guarantee the normal demonstration of touch-screen, can according to the pattern of the concrete display panels of using of above-mentioned touch-screen, the particular location of metallic reflector be set.
For example: in the touch-screen of HADS pattern, as shown in Figure 1a, namely tft array substrate has the public electrode 15 that is positioned at pixel electrode 14 tops, and public electrode 15 has the slit-shaped transparent electrode structure in the position corresponding with the open area of pixel cell; In each pixel cell, metallic reflector 6 can be positioned at the below of public electrode 15 and be electrical connected with pixel electrode 14.In the specific implementation, metallic reflector 6 can be set directly at pixel electrode 14 tops (as shown in Figure 1a) or below, does not do restriction at this.In the displaying time section, the metallic reflector that is electrical connected with pixel electrode is as the part of pixel electrode, produces multi-dimensional electric field with the public electrode of top, controls the liquid crystal upset.
And, in the HADS pattern, when touch-control drive wire and data signal line arrange with layer, can be blocked by the public electrode of more close liquid crystal layer, be unfavorable for being arranged on the touch-control sensing electrode detector touch scanning signals on color membrane substrates.Therefore, arrived by the touch-control sensing electrode detector in order to guarantee that the touch scanning signals that applies on the touch-control drive wire is easier, can be set to engraved structure in the position corresponding with the touch-control drive wire by public electrode, be that public electrode arranges the pattern without public electrode in the position corresponding with the touch-control drive wire, as shown in the B zone in Fig. 5.
In the touch-screen of ADS pattern, be that tft array substrate has the public electrode that is positioned at the pixel electrode below, the public electrode mutually insulated that the public electrode that the pixel cell row adjacent with the touch-control drive wire have and other pixel cells row have, pixel electrode has the slit-shaped transparent electrode structure in the position corresponding with the open area of pixel cell; In each pixel cell, metallic reflector is positioned at the below of pixel electrode and is electrical connected with public electrode.In the specific implementation, metallic reflector can be set directly at above or below public electrode, does not do restriction at this.In the displaying time section, the metallic reflector that is electrical connected with public electrode is as the part of public electrode, produces multi-dimensional electric field with the pixel electrode of top, controls the liquid crystal upset.And in the touch-control time period, mutually insulated between the public electrode that is connected with each touch-control drive wire by metallic reflector and other public electrodes can not produce crosstalking of touching signals.
The below is described in detail the concrete structure of the touch-control sensing electrode of realizing touch controllable function in above-mentioned touch-screen.
In the specific implementation, the touch-control sensing electrode can also can be positioned at the black matrix area of color membrane substrates towards the one side of liquid crystal layer between the substrate and black matrix area of color membrane substrates, can also be positioned at the color membrane substrates one side of liquid crystal layer dorsad.
At present, in display panels, the interference of outer signals to display in the procedure for displaying, general all can color membrane substrates dorsad the one side of liquid crystal layer the guarded electrode layer is set, this guarded electrode layer is whole setting.The above-mentioned touch-screen that the utility model embodiment provides in the specific implementation, can be according to required touch-control precision, as shown in Figure 6, guarded electrode layer on color membrane substrates (shielding ITO) is divided into the touch-control sensing electrode Rx of suitable width, generally, the width of every touch-control sensing electrode Rx is good at 5 ~ 6mm.And the precision of touch-screen is usually at grade, and the precision of LCDs can be found out to show that required precision is far longer than the required precision of touch-control usually at micron order, and therefore, general every touch-control sensing electrode all can corresponding multirow pixel cell.
At the touch-control of a frame in the time period, touch-control drive electrode Tx transmits touch scanning signals, voltage signal and the output of each touch-control sensing electrode Rx coupling touch scanning signals, in the displaying time section, each touch-control sensing electrode Rx can ground connection, the effect of guarded electrode is played in the interference of shielding outer signals to display.
Further, in order to carry out reduction processing to box body after color membrane substrates and tft array substrate are to box, namely use the exposed underlay substrate in the outside of particular liquid etching, the guarded electrode layer can be produced on color membrane substrates towards the one side of liquid crystal layer, particularly, each touch-control sensing electrode Rx that forms the guarded electrode layer can be arranged between the substrate and black matrix area of color membrane substrates, also can be positioned at black matrix towards the one side of liquid crystal layer.When touch-control sensing electrode Rx is arranged between the substrate of color membrane substrates and black matrix area, more be conducive to shield the interference of outer signals.
When the touch-control sensing electrode is positioned at color membrane substrates dorsad during the one side of liquid crystal layer, because the spacing between touch-control sensing electrode and touch-control drive electrode is larger, therefore, as shown in Figure 6, can directly each touch-control sensing electrode Rx be prepared into planar structure and can guarantee that coupling capacitance is in suitable scope.
When each touch-control sensing electrode is positioned at color membrane substrates towards the one side of liquid crystal layer, because the spacing between touch-control sensing electrode and touch-control drive electrode is less, in order to guarantee that coupling capacitance improves the feasibility of touch-control in suitable scope, as shown in Figure 7, each touch-control sensing electrode Rx can be designed to have the grid electrode structure, and the pattern of each touch-control sensing electrode is deceived matrix area and is covered, so just can utilize black matrix to hide the fenestral fabric of touch-control sensing electrode, can the aperture opening ratio of display not exerted an influence, can not affect the light transmission rate of display yet.
Particularly, due to the touch-control sensing electrode of the fenestral fabric that arranges on color membrane substrates can occluded pixels the unit, therefore, the material of touch-control sensing electrode can be specially transparent conductive oxide for example ITO or IZO, also can be metal, can effectively reduce its resistance when adopting metal to make the touch-control sensing electrode.
In addition, when touch-control drive wire and touch-control sensing electrode are set, in order to reduce connected IC chip cost, can by adjacent a plurality of touch-control drive wires are passed through the mode of wire conducting at arbitrary end, be reduced to and respectively drive the quantity that the touch-control line provides the driving passage (channel) of electric signal; Simultaneously, can by adjacent a plurality of touch-control sensing electrodes are passed through the mode of wire conducting at arbitrary end, reduce the quantity of the induction channels (channel) that is connected with each touch-control sensing electrode.For example, resolution is the touch-screen of 1280*800, the touch-control drive wire that can consider every 120 pixels are comprised is by the wire conducting, as a touch-control drive wire, the touch-control sensing electrode of 100 length in pixels as a touch-control sensing electrode, therefore, is only needed the channel interface of 10 touch-control drive wires altogether, the channel interface of 8 touch-control sensing electrodes has reduced the requirement to the IC chip.
Based on same utility model design, the utility model embodiment also provides a kind of display device, comprise the embedded touch-screen of above-mentioned Transflective that the utility model embodiment provides, the enforcement of this display device can referring to the embodiment of the embedded touch-screen of above-mentioned Transflective, repeat part and repeat no more.
The embedded touch-screen of a kind of Transflective and display device that the utility model embodiment provides, transmission area and echo area are set in each pixel cell, the thickness of the liquid crystal layer of transmission area is greater than the thickness of the liquid crystal layer of echo area, tft array substrate arranges optical retarder and reflection horizon in zone corresponding to echo area, optical retarder is used for the light delay that compensation is caused by the thickness difference of the liquid crystal layer of the liquid crystal layer of transmission area and echo area; In procedure for displaying, because the thickness of the liquid crystal layer of transmission area and echo area is different, after energising, the liquid crystal layer of different-thickness can have different delayed-actions to light, optical retarder is set in the echo area can compensates the light delay difference that causes thus, make one in pixel cell the echo area and the light transmission rate of transmission area mutually mate, and, electric field open with the state that closes under can keep in a pixel cell GTG consistent, thereby reach the Transflective display effect.The touch-control sensing electrode is set on color membrane substrates, the touch-control drive wire of the gap location setting between the pixel cell of adjacent columns on tft array substrate and data signal line insulation, touch-control drive wire and touch-control sensing electrode are carried out the timesharing driving, with compatible touch controllable function and display effect.And, owing to adopting the timesharing type of drive at touch-control and demonstration stage, can reduce the mutual interference mutually that shows with touch-control, improve picture quality and touch-control accuracy.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (12)
1. the embedded touch-screen of Transflective, comprising: color membrane substrates, thin film transistor (TFT) tft array substrate, and the liquid crystal layer between described color membrane substrates and described tft array substrate; Be formed with a plurality of pixel cells that are the matrix arrangement in the embedded touch-screen of described Transflective, be provided with transmission area and echo area at each pixel cell; It is characterized in that,
The thickness of the liquid crystal layer of described transmission area is greater than the thickness of the liquid crystal layer of described echo area; And described tft array substrate is provided with optical retarder and metallic reflector in the echo area; Described optical retarder is used for the light delay that compensation is caused by the thickness difference of the liquid crystal layer of the liquid crystal layer of described transmission area and described echo area;
Described color membrane substrates has many touch-control sensing electrodes that extend along the line direction of pixel cell;
Described tft array substrate has many touch-control drive wires of the gap location between the pixel cell of adjacent columns, the data signal line mutually insulated in each described touch-control drive wire and tft array substrate.
2. touch-screen as claimed in claim 1, is characterized in that, described touch-control drive wire and described data signal line arrange with layer, and the spacing between each described touch-control drive wire is identical.
3. touch-screen as claimed in claim 2, is characterized in that, the interior metallic reflector of pixel cell that described touch-control drive wire is adjacent with at least one is electrical connected by via hole.
4. touch-screen as claimed in claim 3, is characterized in that, described tft array substrate has the public electrode that is positioned at the pixel electrode top, and described public electrode has the slit-shaped transparent electrode structure in the position corresponding with the open area of described pixel cell;
In each pixel cell, described metallic reflector is positioned at the below of described public electrode and is electrical connected with pixel electrode.
5. touch-screen as claimed in claim 4, is characterized in that, described public electrode has engraved structure in the position corresponding with described touch-control drive wire.
6. touch-screen as claimed in claim 3, it is characterized in that, described tft array substrate has the public electrode that is positioned at the pixel electrode below, the public electrode mutually insulated that the public electrode that the pixel cell row adjacent with the touch-control drive wire have and other pixel cells row have, described pixel electrode has the slit-shaped transparent electrode structure in the position corresponding with the open area of described pixel cell;
In each pixel cell, described metallic reflector is positioned at the below of described pixel electrode and is electrical connected with public electrode.
7. touch-screen as claimed in claim 1, is characterized in that, each described touch-control sensing electrode or is positioned at the described color membrane substrates one side of described liquid crystal layer dorsad between the substrate and black matrix area of described color membrane substrates.
8. touch-screen as claimed in claim 7, it is characterized in that, when each described touch-control sensing electrode is between the substrate of described color membrane substrates and black matrix area, each described touch-control sensing electrode has the grid electrode structure, and the pattern of each touch-control sensing electrode is covered by described black matrix area.
9. touch-screen as claimed in claim 8, is characterized in that, the material of described touch-control sensing electrode is transparent conductive oxide or metal.
10. as the described touch-screen of claim 1-9 any one, it is characterized in that, by the wire conducting, adjacent a plurality of described touch-control drive wire passes through the wire conducting at arbitrary end to adjacent a plurality of described touch-control sensing electrode at arbitrary end.
11. as the described touch-screen of claim 1-9 any one, it is characterized in that, the thickness of liquid crystal layer of described transmission area is the twice of the thickness of liquid crystal layer of described echo area; Described optical retarder is the quarter-wave optical retarder; In each pixel cell, the area of described metallic reflector accounts for half of open area area.
12. a display device is characterized in that, comprises as the embedded touch-screen of the described Transflective of claim 1-11 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220652559 CN202929599U (en) | 2012-11-30 | 2012-11-30 | Semi-transmission semi-reflection type embedded touch screen and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220652559 CN202929599U (en) | 2012-11-30 | 2012-11-30 | Semi-transmission semi-reflection type embedded touch screen and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929599U true CN202929599U (en) | 2013-05-08 |
Family
ID=48219539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220652559 Withdrawn - After Issue CN202929599U (en) | 2012-11-30 | 2012-11-30 | Semi-transmission semi-reflection type embedded touch screen and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202929599U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999219A (en) * | 2012-11-30 | 2013-03-27 | 北京京东方光电科技有限公司 | Semi-transmissive semi-reflective embedded touch panel, driving method thereof and display device |
| WO2017084366A1 (en) * | 2015-11-19 | 2017-05-26 | 京东方科技集团股份有限公司 | Touch panel, preparation method therefor, and display device |
| JP7433493B2 (en) | 2017-02-21 | 2024-02-19 | 株式会社半導体エネルギー研究所 | display panel |
-
2012
- 2012-11-30 CN CN 201220652559 patent/CN202929599U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999219A (en) * | 2012-11-30 | 2013-03-27 | 北京京东方光电科技有限公司 | Semi-transmissive semi-reflective embedded touch panel, driving method thereof and display device |
| CN102999219B (en) * | 2012-11-30 | 2016-01-06 | 北京京东方光电科技有限公司 | A kind of Transflective in-cell touch panel, its driving method and display device |
| WO2017084366A1 (en) * | 2015-11-19 | 2017-05-26 | 京东方科技集团股份有限公司 | Touch panel, preparation method therefor, and display device |
| CN106783909A (en) * | 2015-11-19 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of touch-screen, its preparation method and display device |
| US10895937B2 (en) | 2015-11-19 | 2021-01-19 | Boe Technology Group Co., Ltd. | Touch screen and manufacturing method thereof, display device |
| JP7433493B2 (en) | 2017-02-21 | 2024-02-19 | 株式会社半導体エネルギー研究所 | display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102999219B (en) | A kind of Transflective in-cell touch panel, its driving method and display device | |
| CN102955636B (en) | A kind of capacitance type in-cell touch panel and display device | |
| US10055058B2 (en) | Liquid crystal display device with touch sensing function and plurality of transparent electrode patterns | |
| CN102999220B (en) | Semi-transmissive semi-reflective embedded touch panel, driving method thereof and display device | |
| CN202948433U (en) | Capacitor type embedded touch screen and display device | |
| CN103049156B (en) | A kind of capacitance type in-cell touch panel and display device | |
| CN102955637B (en) | A kind of capacitance type in-cell touch panel, its driving method and display device | |
| CN103049157B (en) | A kind of capacitance type in-cell touch panel and display device | |
| CN102937853B (en) | A kind of capacitance type in-cell touch panel, its driving method and display device | |
| WO2016119445A1 (en) | In-cell touch screen panel and display device | |
| US9529482B2 (en) | Capacitive in-cell touch screen and display device | |
| US9904406B2 (en) | In-cell touch module, its driving method, touch display panel and display device | |
| US9495935B2 (en) | Capacitive in-cell touch screen panel having a common electrode layer provided with sensing and driving electrodes | |
| CN104200784B (en) | Pixel-driving circuit and its driving method, array base palte, Transflective display device | |
| CN102968231A (en) | Capacitive embedded touch screen, driving method thereof and display device | |
| WO2015180303A1 (en) | Embedded touchscreen and display apparatus | |
| WO2015180316A1 (en) | Embedded touchscreen and display apparatus | |
| CN102934015B (en) | There is the liquid crystal display of the Moire effect of reduction | |
| CN104620211A (en) | Touch panel and touch panel integrated display device | |
| CN102945106A (en) | Capacitive incell touch panel and display device | |
| CN103823601A (en) | In-cell touch panel and display device | |
| CN103336635A (en) | Capacitive in-cell touch panel and display device | |
| CN103176307B (en) | Semi-transmissive semi-reflective liquid crystal display (LCD) panel and LCD device | |
| CN203133802U (en) | Embedded capacitive touch-control display panel, display device and control device | |
| CN104597646A (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150623 Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150623 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150623 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150916 Address after: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee before: BOE Technology Group Co., Ltd. Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130508 Effective date of abandoning: 20160106 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |