CN203241974U - Capacitance type embedded touch screen and display device - Google Patents
Capacitance type embedded touch screen and display device Download PDFInfo
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- CN203241974U CN203241974U CN 201320258151 CN201320258151U CN203241974U CN 203241974 U CN203241974 U CN 203241974U CN 201320258151 CN201320258151 CN 201320258151 CN 201320258151 U CN201320258151 U CN 201320258151U CN 203241974 U CN203241974 U CN 203241974U
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Abstract
The utility model discloses a capacitance type embedded touch screen and a display device. A transparent touch sensing structural layer is arranged on one side, facing a liquid crystal layer, of an opposite substrate opposite to an array substrate, and the touch sensing structural layer comprises a first touch sensing electrode and a second touch sensing electrode, wherein the first touch sensing electrode and the second touch sensing electrode are arranged in the same layer and mutually insulated. The touch sensing structural layer for achieving touch control is arranged on the opposite substrate far away from the array substrate, so that mutual interference between touch control signals and display signals in the array substrate can be avoided, the quality of liquid crystal display pictures is guaranteed, and the reliability of the touch control operation can be strengthened. In addition, in the touch sensing structural layer arranged on the opposite substrate, the first touch sensing electrode and the second touch sensing electrode are arranged in the same layer, and therefore, compared with the mode that two layers of mutual different-face intersecting strip-shaped electrodes are respectively manufactured to serve as the touch sensing structural layer, the mode is relatively simple in structure, can shorten the manufacturing technology steps and reduces the production cost.
Description
Technical field
The utility model relates to the touch screen technology field, relates in particular to the embedded touch-screen of a kind of condenser type and display device.
Background technology
Along with the develop rapidly of display technique, touch-screen (Touch Screen Panel) spreads all in people's the 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 each large panel producer favor.
At present, existing condenser type embedded (In cell) touch-screen is at existing TFT(Thin Film Transistor, what Thin Film Transistor (TFT)) direct in addition increase touch-control sweep trace and touch induction lines realized on the array base palte, namely make the strip shaped electric poles that two-layer mutual antarafacial intersects on the surface of tft array substrate, this two-layer electrode as touch-control drive wire and the touch induction lines of touch-screen, forms mutual capacitance in the antarafacial intersection of two strip electrodes respectively.Its course of work is: when the electrode as the touch-control drive wire is loaded touch-control driving signal, detect the voltage signal that touch induction lines is coupled out by mutual capacitance, in this process, when human body contact touch-screen is arranged, people's bulk electric field will act in the mutual capacitance, and the capacitance of mutual capacitance is changed, and then changes the voltage signal that touch induction lines is coupled out, according to the variation of voltage signal, just can determine contact position.
The structural design of the embedded touch-screen of above-mentioned condenser type, the touching signals that the touch-control sweep trace that increases in existing tft array substrate and touch induction lines load, can with tft array substrate in the mutual interference of original display phase, both affect the quality of liquid crystal display picture, reduced again the reliability of touch control operation.
The utility model content
The utility model embodiment provides the embedded touch-screen of a kind of condenser type and display device, in order to solve the problem of display and the mutual interference of touching signals phase in the existing embedded touch-screen.
The embedded touch-screen of a kind of condenser type that the utility model embodiment provides comprises: subtend substrate, array base palte and the liquid crystal layer between described subtend substrate and described array base palte;
Described subtend real estate has transparent touch-sensing structural sheet to a side of described liquid crystal layer, and described touch-sensing structural sheet comprises: with the first touch-sensing electrode and the second touch-sensing electrode of layer setting and mutually insulated; Described the first touch-sensing electrode is loaded touch scanning signals, the described touch scanning signals of described the second touch-sensing electrode coupling and output, or to the described loading of the second touch-sensing electrode touch scanning signals, the described touch scanning signals of described the first touch-sensing electrode coupling and output.
A kind of display device that the utility model embodiment provides comprises the embedded touch-screen of condenser type that the utility model embodiment provides.
The beneficial effect of the utility model embodiment comprises:
The embedded touch-screen of a kind of condenser type and display device that the utility model embodiment provides, to a side of liquid crystal layer transparent touch-sensing structural sheet is set at the subtend real estate relative with array base palte, this touch-sensing structural sheet comprises: arrange and the first touch-sensing electrode and the second touch-sensing electrode of mutually insulated with layer.Because the touch-sensing structural sheet that will realize touch-control is arranged on the subtend substrate away from array base palte, can avoid the display phase mutual interference in touching signals and the array base palte, both guarantee the quality of liquid crystal display picture, strengthened again the reliability of touch control operation.And in the touch-sensing structural sheet that the subtend substrate arranges, the first touch-sensing electrode and the second touch-sensing electrode arrange with layer, with respect to making respectively the crossing strip shaped electric poles of two-layer mutual antarafacial as the touch-sensing structural sheet, structure is relatively simple, can shorten step of preparation process, lower production cost.
Description of drawings
The structural representation of the embedded touch-screen of condenser type that Fig. 1 provides for the utility model embodiment;
The structural representation of the touch-sensing structural sheet in the embedded touch-screen of condenser type that Fig. 2 provides for the utility model embodiment;
The schematic top plan view of the array base palte in the embedded touch-screen of condenser type that Fig. 3 provides for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the embedded touch-screen of condenser type that the utility model embodiment is provided and the embodiment of display device are described in detail.
Each layer film thickness and shape do not reflect true ratio in the accompanying drawing, and purpose is signal explanation the utility model content just.
The embedded touch-screen of a kind of condenser type that the utility model embodiment provides as shown in Figure 1, comprising: subtend substrate 01, array base palte 02 and the liquid crystal layer 03 between subtend substrate 01 and array base palte 02;
Subtend substrate 01 has transparent touch-sensing structural sheet 04 towards a side of liquid crystal layer 03, and this touch-sensing structural sheet 04 comprises as shown in Figure 2: with the first touch-sensing electrode 041 and the second touch-sensing electrode 042 of layer setting and mutually insulated; The first touch-sensing electrode 041 is loaded touch scanning signals, the second touch-sensing electrode 042 coupling touch scanning signals and output, or to the second touch-sensing electrode 042 loading touch scanning signals, the first touch-sensing electrode 041 coupling touch scanning signals and output.
In the specific implementation, the first touch-sensing electrode 041 can be touch sensible electrode (Rx, receive), and the second touch-sensing electrode 042 is to touch drive electrode (Tx, Transport) accordingly; Otherwise the first touch-sensing electrode 041 also can be to touch drive electrode Tx, and the second touch-sensing electrode 042 is touch sensible electrode Rx accordingly, does not do restriction at this.And the first touch-sensing electrode 041 and the second touch-sensing electrode 042 can adopt such as the transparent conductive material of tin indium oxide (ITO) and make in the specific implementation, and therefore not to repeat here.
The touch-screen that the utility model embodiment provides since the touch-sensing structural sheet 04 that will realize touch-control be arranged on the subtend substrate 01 away from array base palte 02, can avoid the display phase mutual interference in touching signals and the array base palte 02, both guarantee the quality of liquid crystal display picture, strengthened again the reliability of touch control operation.And, in the touch-sensing structural sheet 04 that subtend substrate 01 arranges, the first touch-sensing electrode 041 and the second touch-sensing electrode 042 arrange with layer, with respect to making respectively the crossing strip shaped electric poles of two-layer mutual antarafacial as the touch-sensing structural sheet, structure is relatively simple, can shorten step of preparation process, lower production cost.
Particularly, in the above-mentioned touch-screen that the utility model embodiment provides, as shown in Figure 1, can being applied to colored filter 05, to be arranged on the subtend substrate 01 relative with array base palte 2 be the structure of color membrane substrates, each colored filter 05 is spaced from each other by black matrix 06, certainly, also can be applied to colored filter and be arranged on structure in the array base palte, not do restriction at this.The below is that the structure take subtend substrate 01 as color membrane substrates describes the above-mentioned touch-screen that the utility model embodiment provides as example.
In the specific implementation, touch-sensing structural sheet 04 in the touch-screen that the utility model embodiment provides can be between the underlay substrate and black matrix 06 of subtend substrate 01, or as shown in Figure 1, be positioned at the black matrix 06 of subtend substrate 01 towards a side of liquid crystal layer 03, do not do restriction at this.
Further, on subtend substrate 01, between black matrix 06 and touch-sensing structural sheet 04, also can be provided with flatness layer 07.As shown in Figure 1, when touch-sensing structural sheet 04 is arranged on black matrix 06 towards liquid crystal layer 03 1 side, the flatness layer 07 that arranges between black matrix 06 and touch-sensing structural sheet 04 can be filled and led up the thickness difference of deceiving between matrix 06 and each colored filter 05, makes at the touch-sensing structural sheet 04 of flatness layer 07 preparation relatively level and smooth.When arranging touch-sensing structural sheet 06 between underlay substrate and the black matrix, the flatness layer 07 that arranges between black matrix 06 and touch-sensing structural sheet 04 can be filled and led up in the touch-sensing structural sheet 04 thickness difference of each position behind the composition, makes the black matrix 06 for preparing at flatness layer 07 relative on same level with colored filter 05.
Particularly, in the above-mentioned touch-screen that the utility model embodiment provides, the black matrix 06 that forms at subtend substrate 01 generally all has the open area that is the matrix arrangement, at each place, open area colored filter 05 is set, this open area is relative with the effective display area territory of each pixel cell in the array base palte 02.In the specific implementation, the the first touch-sensing electrode 041 that forms at subtend substrate 01 can extend along the column direction of open area, the second touch-sensing electrode 042 can extend along the line direction of open area, namely the wiring direction of the data signal line in the first touch-sensing electrode 041 that subtend substrate 01 is arranged and array base palte 02 is consistent, and the wiring direction of the signal line in the second touch-sensing electrode 042 of subtend substrate 01 layout and array base palte 02 is consistent.Perhaps, the the first touch-sensing electrode 041 that forms at subtend substrate 01 can extend along the line direction of open area, the second touch-sensing electrode 042 can extend along the column direction of open area, namely the wiring direction of the signal line in the first touch-sensing electrode 041 that subtend substrate 01 is arranged and array base palte 02 is consistent, and the wiring direction of the data signal line in the second touch-sensing electrode 042 of subtend substrate 01 layout and array base palte 02 is consistent.Certainly, can along other directions, not do restriction at this at the first touch-sensing electrode 041 of subtend substrate 01 layout and the bearing of trend of the second touch-sensing electrode 042 yet.
The below extends along the column direction of open area with each first touch-sensing electrode 041, and each second touch-sensing electrode 042 extends to example along the line direction of open area and describes.
Particularly, in the touch-screen that the utility model embodiment provides in order to guarantee that the touch-sensing structural sheet is individual layer, namely need between the first touch-sensing electrode 041 and the second touch-sensing electrode 042 to arrange and mutually insulated with layer, do not increase in addition such as the metal level of putting up a bridge, in the specific implementation as shown in Figure 2, when design touch-sensing structural sheet 04, can the finger electrode structure will be set between the first touch-sensing electrode 041 and the second touch-sensing electrode 042 insert, be about to each the first touch-sensing electrode 041 in the vertical direction and be set to dendroid, each second touch-sensing electrode 042 is split in the horizontal direction the block sub-electrode 0422 of horizontal direction, each block sub-electrode 0422 guides to the edge of subtend substrate by wire, so that the touch-control driving IC chip on the flexible PCB (FPC) on follow-up and the array base palte is connected.Certainly can also adopt each first touch-sensing electrode 041 in other graphic designs touch-sensing structural sheets 04 and the wire laying mode of the second touch-sensing electrode 042, not do detailed description at this.
Particularly, the above-mentioned touch-screen that the utility model embodiment provides goes for the display panels 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 display panels, also go for traditional twisted-nematic (TN, Twisted Nematic) type display panels, do not do restriction at this.
And, when adopting TN type display panels to prepare the above-mentioned touch-screen that the utility model embodiment provides, can save the common electrode layer in the color membrane substrates, take timesharing to drive, utilize the function by the multiplexing common electrode layer of touch-sensing electrode of transparent conductive material preparation.
At first, touch-screen is shown that the time of each frame (V-sync) is divided into displaying time section (Display) and touch-control time period (Touch), for example the time of demonstration one frame of touch-screen is 16.7ms, choose wherein 5ms as the touch-control time period, other 11.7ms 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.
In the displaying time section, the first touch-sensing electrode and the second touch-sensing electrode are loaded respectively common electrode signal, this moment, the touch-sensing structural sheet used as public electrode, and the pixel electrode on the array base palte forms electric field, the rotation of control liquid crystal.
In the touch-control time period, the first touch-sensing electrode is loaded touch scanning signals, the second touch-sensing electrode coupling touch scanning signals and output, or to the loading of the second touch-sensing electrode touch scanning signals, the described touch scanning signals of the first touch-sensing electrode coupling and output.
Further, when adopting IPS or ADS type display panels to prepare the above-mentioned touch-screen that the utility model embodiment provides, also can take timesharing to drive, be conducive to like this to reduce the phase mutual interference between touching signals and the display.
Further, in the touch-screen that the utility model embodiment provides, the touch-control driving IC chip of each first touch-sensing electrode and the second touch-sensing electrode can be divided with the display driver IC chip of control liquid crystal display and is arranged in the control touch-sensing structural sheet, can reduce like this manufacture difficulty of driving IC chip, and reduce the interference between touch-control and the demonstration.
In the specific implementation, as shown in Figure 1, can be at the sealed plastic box 08 interior conducting sphere 09 that arranges at be tightly connected subtend substrate 01 and array base palte 02 edge; And, the splicing ear 10 that touch-control drives chip is set in the noneffective display area territory of array base palte 02; Like this, the first touch-sensing electrode 041 in the touch-sensing structural sheet 04 and the second touch-sensing electrode 042 just can be connected to the splicing ear 10 that touch-control drives chip by conducting sphere 09, and, can drive at touch-control flexible PCB (FPC) the realization touch-control driving of the splicing ear 10 places binding touch-control driving IC chip of chip.As shown in Figure 3, realize the touch-control driving IC chip 11 of touch-control and realize that the display driver IC chip 12 that shows can divide be arranged on array base palte 02.
When concrete preparation array base palte, can be with splicing ear and the pixel electrode in the array base palte or the same layer setting of public electrode (ADS type) of touch-control chip, to reduce composition technique.
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 condenser type 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 condenser type, repeat part and repeat no more.
The embedded touch-screen of a kind of condenser type and display device that the utility model embodiment provides, to a side of liquid crystal layer transparent touch-sensing structural sheet is set at the subtend real estate relative with array base palte, this touch-sensing structural sheet comprises: arrange and the first touch-sensing electrode and the second touch-sensing electrode of mutually insulated with layer.Because the touch-sensing structural sheet that will realize touch-control is arranged on the subtend substrate away from array base palte, can avoid the display phase mutual interference in touching signals and the array base palte, both guarantee the quality of liquid crystal display picture, strengthened again the reliability of touch control operation.And in the touch-sensing structural sheet that the subtend substrate arranges, the first touch-sensing electrode and the second touch-sensing electrode arrange with layer, with respect to making respectively the crossing strip shaped electric poles of two-layer mutual antarafacial as the touch-sensing structural sheet, structure is relatively simple, can shorten step of preparation process, lower production cost.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (9)
1. embedded touch-screen of condenser type comprises: subtend substrate, array base palte and the liquid crystal layer between described subtend substrate and described array base palte, it is characterized in that,
Described subtend real estate has transparent touch-sensing structural sheet to a side of described liquid crystal layer, and described touch-sensing structural sheet comprises: with the first touch-sensing electrode and the second touch-sensing electrode of layer setting and mutually insulated; Described the first touch-sensing electrode is loaded touch scanning signals, the described touch scanning signals of described the second touch-sensing electrode coupling and output, or to the described loading of the second touch-sensing electrode touch scanning signals, the described touch scanning signals of described the first touch-sensing electrode coupling and output.
2. touch-screen as claimed in claim 1 is characterized in that, described touch-sensing structural sheet or is positioned at the black matrix of described subtend substrate towards a side of described liquid crystal layer between the underlay substrate and black matrix of described subtend substrate.
3. touch-screen as claimed in claim 2 is characterized in that, has flatness layer between described black matrix and the described touch-sensing structural sheet.
4. touch-screen as claimed in claim 1 is characterized in that, the black matrix of subtend substrate has the open area that is the matrix arrangement;
Described the first touch-sensing electrode extends along the line direction of open area, and described the second touch-sensing electrode extends along the column direction of open area; Or,
Described the second touch-control sensing electrode extends along the line direction of open area, and described the first touch-control sensing electrode extends along the column direction of open area.
5. touch-screen as claimed in claim 4 is characterized in that, forms between described the first touch-sensing electrode and described the second touch-sensing electrode to insert to refer to electrode structure.
6. such as each described touch-screen of claim 1-5, it is characterized in that, also comprise: the sealed plastic box at be tightly connected described subtend substrate and described array base palte edge has conducting sphere in the described sealed plastic box;
The splicing ear that has touch-control driving chip in the noneffective display area territory of described array base palte;
The first touch-sensing electrode in the described touch-sensing structural sheet and the second touch-sensing electrode are connected to the splicing ear that described touch-control drives chip by described conducting sphere.
7. touch-screen as claimed in claim 6 is characterized in that, the splicing ear of described touch-control chip and the pixel electrode in the array base palte or public electrode arrange with layer.
8. such as each described touch-screen of claim 1-5, it is characterized in that, described touch-sensing electrode forms common electrode layer;
In the displaying time section, described the first touch-sensing electrode and the second touch-sensing electrode are loaded respectively common electrode signal;
In the touch-control time period, described the first touch-sensing electrode is loaded touch scanning signals, the described touch scanning signals of described the second touch-sensing electrode coupling and output, or to the described loading of the second touch-sensing electrode touch scanning signals, the described touch scanning signals of described the first touch-sensing electrode coupling and output.
9. a display device is characterized in that, comprises such as the embedded touch-screen of each described condenser type of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320258151 CN203241974U (en) | 2013-05-13 | 2013-05-13 | Capacitance type embedded touch screen and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320258151 CN203241974U (en) | 2013-05-13 | 2013-05-13 | Capacitance type embedded touch screen and display device |
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| CN203241974U true CN203241974U (en) | 2013-10-16 |
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| CN 201320258151 Expired - Lifetime CN203241974U (en) | 2013-05-13 | 2013-05-13 | Capacitance type embedded touch screen and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336635A (en) * | 2013-05-13 | 2013-10-02 | 京东方科技集团股份有限公司 | Capacitive in-cell touch panel and display device |
| CN104636015A (en) * | 2015-01-13 | 2015-05-20 | 昆山龙腾光电有限公司 | Touch display device |
| CN104657021A (en) * | 2015-02-28 | 2015-05-27 | 深圳市华星光电技术有限公司 | Embedded touch structure and liquid crystal display panel with embedded touch structure |
-
2013
- 2013-05-13 CN CN 201320258151 patent/CN203241974U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336635A (en) * | 2013-05-13 | 2013-10-02 | 京东方科技集团股份有限公司 | Capacitive in-cell touch panel and display device |
| CN103336635B (en) * | 2013-05-13 | 2016-08-10 | 京东方科技集团股份有限公司 | A kind of capacitance type in-cell touch panel and display device |
| US9547384B2 (en) | 2013-05-13 | 2017-01-17 | Boe Technology Group Co., Ltd. | Capacitive in-cell touch panel and display device |
| CN104636015A (en) * | 2015-01-13 | 2015-05-20 | 昆山龙腾光电有限公司 | Touch display device |
| CN104657021A (en) * | 2015-02-28 | 2015-05-27 | 深圳市华星光电技术有限公司 | Embedded touch structure and liquid crystal display panel with embedded touch structure |
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Granted publication date: 20131016 |