CN203706191U - Touch display device - Google Patents
Touch display device Download PDFInfo
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- CN203706191U CN203706191U CN201420101985.2U CN201420101985U CN203706191U CN 203706191 U CN203706191 U CN 203706191U CN 201420101985 U CN201420101985 U CN 201420101985U CN 203706191 U CN203706191 U CN 203706191U
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Abstract
The utility model discloses a touch display device, which comprises a first base plate and a second base plate, wherein drive electrodes and common electrodes are arranged on the first base plate at intervals, the second base plate is provided with sensing electrodes, and switching transistors are arranged on the edges of the drive electrodes and the adjacent common electrodes of a display region of the touch display device. The touch display device does not need to add additional layer technology process based on an existing In-cell touch screen structure, and can achieve electrical connection of the drive electrodes and the common electrodes in a work stage of a display stage just by connecting the drive electrodes and the common electrodes through the switching transistors, thereby solving the problem that the voltages on the drive electrodes and the common electrodes are not consistent in the display stage, and preventing a uneven display phenomenon from happening.
Description
Technical field
The utility model relates to technical field of liquid crystal display, particularly a kind of touch control display apparatus.
Background technology
The screen of the uses such as current mobile phone, panel computer mostly is the capacitance touch screen that can realize Presentation Function and can realize again touch function, specifically comprises On-cell, In-cell and Out-cell three types.
The diagrammatic cross-section of In-Cell touch-screen as shown in Figure 1 at present, comprise color membrane substrates and array base palte, in color membrane substrates and array base palte, comprise respectively the first underlay substrate 1 and the second underlay substrate 2, in color membrane substrates, also comprise induction electrode (RX) 3 and colored filter 4 that horizontal strip distributes, between color membrane substrates and array base palte, be filled with liquid crystal 5.In array base palte, also comprise public electrode (Vcom) 6, after it is done to Region Segmentation, using a part as drive electrode (TX), TX is vertical block distribution, and RX is positioned at the top of TX, realizes full in cell function.TX and RX, in conjunction with combining, form touch-control sensing module, realize obtaining touching signals.Except as TX, in Vcom electrode 6, remaining part is as show electrode, and therefore two parts TX in Vcom electrode 6 and show electrode adopt time-multiplexed mode to realize touch-control and show compatible function.
In existing design, TX adopts bilateral timesharing to drive, vertical direction and Vcom electrode 6 are electrically connected, but because product itself needs narrow frame processing, be subject to the restriction of the factors such as signal line wiring space, make the resistance difference between drive electrode and the public electrode of near-end and far-end too large, so good resnstance transformer processing cannot be realized in the sideline of TX and RX, make in the demonstration stage, voltage on TX and Vcom electrode 6 does not mate, cause demonstration bad, there is obvious Pattern, affect display effect.
Utility model content
(1) technical matters that will solve
The technical problems to be solved in the utility model is how to solve drive electrode and the unmatched problem of adjacent public electrode voltages.
(2) technical scheme
For solving the problems of the technologies described above, the utility model provides a kind of touch control display apparatus, comprise first substrate and second substrate, on described first substrate, be arranged at intervals with drive electrode and public electrode, on described second substrate, be provided with induction electrode, between the submarginal position of the each drive electrode in described touch control display apparatus viewing area and adjacent public electrode, be provided with switching transistor drive electrode.
Further, described drive electrode and public electrode are to arrange with layer.
Further, described public electrode is strip and distributes, and described drive electrode is block distribution, and different block drive electrodes distributes with matrix-style.
Further, described public electrode and drive electrode are all block distribution.
Further, described induction electrode is strip and distributes, corresponding with drive electrode position.
Further, the number of described switching transistor is at least one.
Further, be also provided with first signal line, the switching transistor distributing with row with public electrode one side is connected.
Further, be also provided with secondary signal line, be connected with the switching transistor with column distribution.
(3) beneficial effect
The touch control display apparatus that the utility model embodiment provides, comprise first substrate and second substrate, on first substrate, be arranged at intervals with drive electrode and public electrode, on second substrate, be provided with induction electrode, it is characterized in that, be provided with switching transistor at the drive electrode of touch control display apparatus viewing area and adjacent public electrode edge.On the basis of existing In-cell touch screen structure, do not need to increase extra figure layer process processing procedure, only need by switching transistor, drive electrode and public electrode to be coupled together, make to realize at the working stage that shows the stage electric connection of drive electrode and public electrode, both voltage is kept consistency, thereby solve the demonstration stage due to the inconsistent problem of voltage on drive electrode and public electrode, avoid showing the appearance of heterogeneity phenomenon.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of In-Cell touch-screen in prior art;
Fig. 2 is the distribution schematic diagram of drive electrode and public electrode on a kind of touch control display apparatus providing in the utility model embodiment;
Fig. 3 is the enlarged diagram being electrically connected by switching transistor between drive electrode and public electrode in the utility model embodiment;
Fig. 4 is the principle of work schematic diagram of switching TFT in the time that external circuit provides TFT to open new in the utility model embodiment;
Fig. 5 is the signal timing diagram in demonstration stage and touch-control stage in the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
A kind of touch control display apparatus is provided in the utility model embodiment, comprise first substrate and second substrate, on first substrate, be arranged at intervals with drive electrode 10 and public electrode 20, on second substrate, be provided with induction electrode, between the submarginal position of the drive electrode 10 in this touch control display apparatus viewing area and adjacent public electrode 20, be provided with switching transistor 30, wherein the distribution schematic diagram of drive electrode 10 and public electrode 20 as shown in Figure 2.
By switching transistor is set, drive electrode and public electrode are coupled together, make to realize at the working stage that shows the stage electric connection of drive electrode and public electrode, both voltage is kept consistency, thereby solve the demonstration stage due to the inconsistent problem of voltage on drive electrode and public electrode, avoid showing the appearance of heterogeneity phenomenon.
For the enlarged diagram being electrically connected by switching transistor 30 between drive electrode 10 and public electrode 20 as shown in Figure 3.
It should be noted that, the drive electrode 10 in the present embodiment and public electrode 20 are to arrange with layer, form by a composition technique.
Further, in the present embodiment public electrode 20 be strip distribute, drive electrode 10 is block distribution, and different block drive electrodes 10 with matrix-style distribute, distribution plan is referring to Fig. 2.In Fig. 2, public electrode 20 along continuous straight runs are strip distribution, and drive electrode 10 is discontinuous bulk, distribute along the both sides of public electrode 20.These vertical direction by public electrode 20 separate, horizontal direction also discontinuous drive electrode 10 on array base palte, be matrix distribution, horizontal direction is in a row, vertical direction becomes column distribution.
Also it should be noted that, in the present embodiment, the shape of public electrode 20 and drive electrode 10 and distribution are except aforesaid way, can also further carry out piecemeal processing to public electrode 20, can also be that public electrode 20 and drive electrode 10 are all block distribution, can realize better resistors match effect.
Further, the induction electrode (not shown) in the present embodiment on second substrate is strip and distributes, corresponding with drive electrode 10 positions, to realize obtaining of touching signals.
Further, in the present embodiment, the number of switching transistor 30 is at least one, is the example that is connected to two switching transistors in the present embodiment Fig. 3, and two switching transistors 30 are separately positioned on the position of drive electrode near both sides of the edge.But it should be noted that, in the present embodiment, be not specifically limited for the number of switching transistor 30, as long as can realize the electric connection of drive electrode and public electrode, can not affect again original structure and performance simultaneously.
Further, be also provided with first signal line 40 on the first substrate in the present embodiment, the switching transistor 30 distributing with row with public electrode 20 1 sides is connected.
Further, on the first substrate in the present embodiment, be also provided with secondary signal line 50, be connected with the switching transistor 30 with column distribution.Secondary signal line 50 is specifically for being electrically connected the block TX of each row, and wherein the number of secondary signal line 50 is consistent with the columns of TX piece in matrix in Fig. 2, and the number of secondary signal line 50 equals the value of n.In Fig. 2, only show 3, all the other secondary signal lines are all identical with connected mode and the principle of switching transistor, repeat no more herein.
According to above-mentioned, the preferred plan of the present embodiment is taking the array base palte (being first substrate) in the In-cell touch-screen under the H-ADS display mode of high aperture as example, suppose the n=12 in Fig. 2, be on array base palte, to be provided with TX1-TX12 totally 12 row drive electrodes 10, in public electrode 20 horizontal directions, be connected by the transistor 30 that opens the light with 12 drive electrodes 10 in the first row.The in the situation that of providing TFT start signal by first signal line 40 for it at external circuit, principle of work schematic diagram as shown in Figure 4.In each viewing area, the input of TFT start signal, controlling each switching TFT opens, Vcom electrode edge adjacent thereto TX is electrically connected, so just make up voltage on each electrode bringing due to the factor such as input path and wiring space inconsistent, shown thereby solved the obvious problem of Pattern outward appearance that heterogeneity causes.Cover because this top, region has black matrix (BM), therefore can not affect outward appearance and aperture opening ratio, more can not affect normal Presentation Function.Because TFT start signal circuit and switching TFT processing procedure can not take other MASK processing procedure, can be compatible mutually with original TFT-LCD making technology.
Carry out work providing after TFT start signal, the signal timing diagram in demonstration stage and touch-control stage as shown in Figure 5.In-cell touch-screen adopts timesharing type of drive, and the work schedule in one-period is:
In the demonstration stage, TX and Vcom electrode are all inputted and are shown voltage Vcom_L, and now TFT start signal is Von, and each adjacent switching TFT is all opened, and TX and Vcom electrode edge are electrical connected.Be connected because each TX piece has the Vocm electrode edge being adjacent, can solve and show inhomogenous problem.
In the time of the touch-control stage, TX input driving voltage TX_H, Vcom electrode is also drawn high Vcom_H thereupon, and this stage, TX and Vcom electrode can not be electrically connected owing to being subject to the restriction of touch-control modular concept, and now TFT start signal is Voff state;
Enter afterwards the demonstration stage of next cycle, carry out repetition according to above-mentioned.
It should be noted that, in Fig. 5, also comprise Vblank signal, represent a cut-in voltage in touch-control and demonstration work time zone, represent opening and closing.
Because the touch-control stage is compared with the demonstration stage, time very short (1/4 that the time in touch-control stage is whole driving time), if the liquid crystal of filling adopts negative liquid crystal, it is not strong to voltage response susceptibility, so the time in touch-control stage can ignore on the impact showing.Therefore,, in the demonstration stage, directly the start signal of input switch TFT, all links together the TX on whole array base palte and Vcom electrode, makes its voltage uniform distribution, thereby thoroughly solves the obvious problem of Pattern, realizes good display effect.
It should be noted that, laterally arrange if adopt existing TX to be planar, RX is the mode of vertically arranging, even switching TFT is set between TX and Vcom electrode, just can only compensate the resistors match problem of TX1 and TX12, because the TX of near-end and far-end and Vcom electrode difference are too large.But TX and RX are all with block distribution in the present embodiment, increase after switching TFT, not only can solve demonstration stage TX and the unmatched problem of Vcom electrode voltage, can also realize good resnstance transformer, thereby realize better display effect.
It should be noted that, the first substrate in the present embodiment can be array base palte, and second substrate can be color membrane substrates, therefore on second substrate except being provided with induction electrode, be also provided with colored filter.
Above embodiment is only for illustrating the utility model; and be not limitation of the utility model; the those of ordinary skill in relevant technologies field; in the situation that not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (8)
1. a touch control display apparatus, comprise first substrate and second substrate, on described first substrate, be arranged at intervals with drive electrode and public electrode, on described second substrate, be provided with induction electrode, it is characterized in that, between the submarginal position of the each drive electrode in described touch control display apparatus viewing area and adjacent public electrode, be provided with switching transistor.
2. touch control display apparatus as claimed in claim 1, is characterized in that, described drive electrode and public electrode are to arrange with layer.
3. touch control display apparatus as claimed in claim 1, is characterized in that, described public electrode is strip and distributes, and described drive electrode is block distribution, and different block drive electrodes distributes with matrix-style.
4. touch control display apparatus as claimed in claim 1, is characterized in that, described public electrode and drive electrode are all block distribution.
5. touch control display apparatus as claimed in claim 1, is characterized in that, described induction electrode is strip and distributes, corresponding with drive electrode position.
6. touch control display apparatus as claimed in claim 1, is characterized in that, the number of described switching transistor is at least one.
7. touch control display apparatus as claimed in claim 6, is characterized in that, is also provided with first signal line, and the switching transistor distributing with row with public electrode one side is connected.
8. touch control display apparatus as claimed in claim 6, is characterized in that, is also provided with secondary signal line, is connected with the switching transistor with column distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101985.2U CN203706191U (en) | 2014-03-06 | 2014-03-06 | Touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101985.2U CN203706191U (en) | 2014-03-06 | 2014-03-06 | Touch display device |
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| Publication Number | Publication Date |
|---|---|
| CN203706191U true CN203706191U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420101985.2U Expired - Fee Related CN203706191U (en) | 2014-03-06 | 2014-03-06 | Touch display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104216561A (en) * | 2014-08-22 | 2014-12-17 | 京东方科技集团股份有限公司 | Touch control display device and driving method of touch control display device |
| CN104714695A (en) * | 2015-03-31 | 2015-06-17 | 京东方科技集团股份有限公司 | Display substrate and drive method thereof and display device |
| WO2016004720A1 (en) * | 2014-07-11 | 2016-01-14 | 京东方科技集团股份有限公司 | Touch substrate and display apparatus |
| CN106971696A (en) * | 2017-05-03 | 2017-07-21 | 昆山龙腾光电有限公司 | Display device, drive circuit and preparation method thereof |
| CN107015707A (en) * | 2017-06-12 | 2017-08-04 | 京东方科技集团股份有限公司 | Touch display substrate, device and its driving method |
-
2014
- 2014-03-06 CN CN201420101985.2U patent/CN203706191U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016004720A1 (en) * | 2014-07-11 | 2016-01-14 | 京东方科技集团股份有限公司 | Touch substrate and display apparatus |
| US9645689B2 (en) | 2014-07-11 | 2017-05-09 | Boe Technology Group Co., Ltd. | Touch substrate and display device |
| CN104216561A (en) * | 2014-08-22 | 2014-12-17 | 京东方科技集团股份有限公司 | Touch control display device and driving method of touch control display device |
| CN104714695A (en) * | 2015-03-31 | 2015-06-17 | 京东方科技集团股份有限公司 | Display substrate and drive method thereof and display device |
| US9965085B2 (en) | 2015-03-31 | 2018-05-08 | Boe Technology Group Co., Ltd. | Display substrate, driving method thereof and display device for connecting touch electrodes with a common voltage |
| CN106971696A (en) * | 2017-05-03 | 2017-07-21 | 昆山龙腾光电有限公司 | Display device, drive circuit and preparation method thereof |
| CN106971696B (en) * | 2017-05-03 | 2019-09-06 | 昆山龙腾光电有限公司 | Display device, driving circuit and preparation method thereof |
| CN107015707A (en) * | 2017-06-12 | 2017-08-04 | 京东方科技集团股份有限公司 | Touch display substrate, device and its driving method |
| WO2018228284A1 (en) * | 2017-06-12 | 2018-12-20 | 京东方科技集团股份有限公司 | Touch display substrate, manufacturing method therefor, driving method, and display device |
| CN107015707B (en) * | 2017-06-12 | 2021-01-26 | 京东方科技集团股份有限公司 | Touch display substrate, device and driving method thereof |
| US11237662B2 (en) | 2017-06-12 | 2022-02-01 | Hefei Boe Optoelectronics Technology Co., Ltd. | Touch display substrate with switching device disposed between adjacent electrode blocks, method for manufacturing the same, driving method thereof, and display device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 |