CN203480471U - Embedded type touch screen and display device - Google Patents
Embedded type touch screen and display device Download PDFInfo
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- CN203480471U CN203480471U CN201320597500.9U CN201320597500U CN203480471U CN 203480471 U CN203480471 U CN 203480471U CN 201320597500 U CN201320597500 U CN 201320597500U CN 203480471 U CN203480471 U CN 203480471U
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- 239000000463 material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
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- 230000004048 modification Effects 0.000 description 3
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Abstract
The utility model discloses an embedded type touch screen and a display device. A touch sensing structure layer for allowing the touch function to be achieved is added between an upper substrate and a lower substrate. The touch sensing structure 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, insulated from each other and arranged in a crossing mode. The orthographic projection of the pattern of the added touch sensing structure layer on the lower substrate is located in an area where the pattern of a black matrix layer is located, and therefore the opening rate of occupied pixel units can be lowered.
Description
Technical Field
The utility model relates to a show technical field, especially relate to an embedded touch-sensitive screen and display device.
Background
An In cell Touch Panel (In cell Touch Panel) is a Touch display Panel In which a Touch Panel and a display Panel are integrated. The touch driving electrodes and the touch sensing electrodes are integrated in the display screen, and the embedded touch screen can simultaneously realize touch control and image display functions. The embedded touch screen has the characteristics of simple structure, light weight, thinness, low cost and the like, and is gradually the mainstream of the display technical field.
In the embedded touch technology, the common touch driving electrodes and touch sensing electrodes are electrodes parallel to the gate scanning lines and electrodes parallel to the data signal lines added to the area of the array substrate corresponding to the black matrix. Specifically, referring to fig. 1, a conventional in-cell touch screen includes: a plurality of gate scan lines 10 distributed in a transverse direction, a plurality of data signal lines 20 distributed in a longitudinal direction, and sub-pixel units enclosed by the gate scan lines 10 and the data signal lines 20, such as a red sub-pixel unit (R), a green sub-pixel unit (G), and a blue sub-pixel unit (B) in fig. 1; the plurality of sub-pixel units are arranged in a matrix; the liquid crystal display further comprises a touch driving electrode 30 which is positioned between two adjacent sub-pixel units and is parallel to the gate scanning line 10, and a touch sensing electrode 40 which is positioned between two adjacent sub-pixel units and is parallel to the data signal line 20.
Since the touch driving electrode 30 and the touch sensing electrode 40 are manufactured by the same process as the gate scan line 10 and the data signal line 20, the touch driving electrode 30 and the touch sensing electrode 40 are opaque electrodes and are located in the non-display region between adjacent sub-pixel units.
In the in-cell touch screen shown in fig. 1, the gate scan lines and the touch driving electrodes need to be kept at a certain distance to ensure mutual insulation, and the data signal lines and the touch sensing electrodes need to be kept at a certain distance to ensure mutual insulation. Therefore, the aperture ratio of each sub-pixel unit is low.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an embedded touch-sensitive screen and display device for improve embedded touch-sensitive screen's aperture opening ratio.
The embodiment of the utility model provides an embedded touch-sensitive screen, including relative and the upper substrate and the infrabasal plate put, still include: the black matrix layer and the touch sensing structure layer are arranged between the upper substrate and the lower substrate; wherein,
the orthographic projection of the graph of the touch sensing structure layer on the lower substrate is positioned in the area where the graph of the black matrix layer is positioned;
the touch sensing structure layer includes: the first touch sensing electrode and the second touch sensing electrode are arranged on the same layer, insulated from each other and arranged in a crossed manner; loading a touch scanning signal to the first touch sensing electrode in a touch time period, and coupling and outputting the touch scanning signal to the second touch sensing electrode; or loading a touch scanning signal to the second touch sensing electrode, and coupling the touch scanning signal to the first touch sensing electrode and outputting the touch scanning signal.
The embodiment of the utility model provides an above-mentioned embedded touch-sensitive screen has increased the touch sensing structural layer that is used for realizing the touch-control function between upper substrate and infrabasal plate, and this touch sensing structural layer includes: the first touch sensing electrode and the second touch sensing electrode are arranged on the same layer, insulated from each other and arranged in a crossed manner, and the orthographic projection of the added pattern of the touch sensing structure layer on the lower substrate is positioned in the region where the pattern of the black matrix layer is positioned, so that the occupation of the aperture opening ratio of the pixel unit can be avoided.
Preferably, in the touch screen provided by the embodiment of the present invention, the black matrix layer is located on a side of the upper substrate facing the lower substrate, and a color resin layer is further disposed on the black matrix layer;
the touch sensing structure layer is located between the upper substrate and the black matrix layer, or between the black matrix layer and the color resin layer, or above the color resin layer.
Preferably, in the touch screen provided by the embodiment of the present invention, the first touch sensing electrode is composed of a plurality of mutually independent first touch sensing sub-electrodes, and the first touch sensing sub-electrodes and the second touch sensing electrode are arranged at intervals; the first touch sensing sub-electrodes which belong to the same first touch sensing electrode and are positioned at two sides of the second touch sensing electrode are electrically connected through bridging lines; or,
the second touch sensing electrode is composed of a plurality of mutually independent second touch sensing sub-electrodes which are arranged at intervals with the first touch sensing electrode; and the second touch sensing sub-electrodes which belong to the same second touch sensing electrode and are positioned at two sides of the first touch sensing electrode are electrically connected through a bridging line.
Specifically, in order to avoid influencing the aperture opening ratio of display, in the embodiment of the present invention provides an above-mentioned touch screen, the bridge connection line is in orthographic projection on the infrabasal plate is located in the figure place region of black matrix layer.
Further, in the touch screen provided by the embodiment of the present invention, in order to avoid signal interference between the first touch sensing electrodes, a first floating electrode is disposed between two adjacent first touch sensing electrodes; and/or a second floating electrode is arranged between two adjacent second touch sensing electrodes to avoid signal interference between the first touch sensing electrodes.
Specifically, in order to avoid affecting the aperture ratio of the display, in the touch screen provided by the embodiment of the present invention, the orthographic projection of the first floating electrode on the lower substrate is located in the region where the pattern of the black matrix layer is located; and the orthographic projection of the second floating electrode on the lower substrate is positioned in the area where the pattern of the black matrix layer is positioned.
Specifically, in the touch screen provided by the embodiment of the present invention, the material of the first touch sensing electrode and the second touch sensing electrode is a metal material or a transparent conductive oxide material.
The embodiment of the utility model provides a display device is still provided, include the embodiment of the utility model provides an above-mentioned embedded touch-sensitive screen.
Drawings
FIG. 1 is a schematic diagram of a conventional in-cell touch screen;
fig. 2 is a schematic side view of an in-cell touch screen according to an embodiment of the present invention;
fig. 3a and fig. 3b are schematic top views of an in-cell touch screen according to an embodiment of the present invention;
fig. 4 is a timing diagram illustrating a touch function of an embedded touch screen according to an embodiment of the present invention.
Detailed Description
An embodiment of the utility model provides an embedded touch-sensitive screen and display device for improve embedded touch-sensitive screen's aperture opening ratio.
First, the working principle of the lower in-cell touch screen is briefly introduced.
When a finger touches the touch screen, the coupling capacitance between adjacent electrodes is changed by the finger, and the position of the touch point is determined by detecting the change value of the coupling capacitance of the touch point.
The embodiment of the utility model provides an embedded touch-sensitive screen has increased the touch-sensitive structural layer that is used for realizing the touch-control function between upper substrate and infrabasal plate, and this touch-sensitive structural layer includes: the first touch sensing electrode and the second touch sensing electrode are arranged on the same layer, insulated from each other and arranged in a cross mode, the orthographic projection of the added pattern of the touch sensing structure layer on the lower substrate is located in the region where the pattern of the black matrix layer is located, the occupation of the aperture opening ratio of the pixel unit can be avoided, and the first touch sensing electrode and the second touch sensing electrode are arranged on the same layer, so that the thickness of the touch screen can be reduced.
The embodiment of the utility model provides an embedded touch-sensitive screen, as shown in fig. 2, including relative and the upper substrate 1 and the infrabasal plate 2 of putting, still include: a black matrix layer 3 and a touch sensing structure layer 4 disposed between the upper substrate 1 and the lower substrate 2; wherein,
the orthographic projection of the graph of the touch sensing structure layer 4 on the lower substrate 2 is positioned in the area where the graph of the black matrix layer 3 is positioned;
as shown in fig. 3a and 3b, the touch sensing structure layer 4 specifically includes: the first touch sensing electrode 41 and the second touch sensing electrode 42 are arranged in the same layer, insulated from each other and arranged in a crossed manner; in a touch time period, a touch scanning signal is applied to the first touch sensing electrode 41, and the second touch sensing electrode 42 couples and outputs the touch scanning signal; or the second touch sensing electrode 42 is loaded with a touch scanning signal, and the first touch sensing electrode 41 couples the touch scanning signal and outputs the touch scanning signal.
In a specific implementation, the first touch sensing electrode 41 may be a touch sensing electrode (Rx, receive), and the second touch sensing electrode 42 is correspondingly a touch driving electrode (Tx, Transport); conversely, the first touch sensing electrode 41 may be a touch driving electrode Tx, and the second touch sensing electrode 42 may be a touch sensing electrode Rx, which is not limited herein. Moreover, the first touch sensing electrode 41 and the second touch sensing electrode 42 are shielded by the pattern of the black matrix layer 3, and therefore, in a specific implementation, the first touch sensing electrode may be made of a transparent conductive oxide material such as Indium Tin Oxide (ITO), or may be made of a metal material such as Al and Mo, which is not described herein.
Specifically, the embodiment of the present invention provides the touch screen, as shown in fig. 2, which can be applied to a structure in which the color resin layer 5 (e.g., R, G, B resin layer in fig. 2) and the black matrix layer 3 are disposed on the upper substrate 1 opposite to the lower substrate 2, that is, the color film substrate, and the color resin layers 5 are separated from each other by the pattern of the black matrix layer 3, and of course, can also be applied to a structure in which the color resin layer and the black matrix layer are disposed on the lower substrate, which is not limited herein. The following is an example of the structure in which the upper substrate 1 is a color film substrate, and the touch panel provided by the embodiment of the present invention is described.
Specifically, a black matrix layer 3 is provided on a side of the upper substrate 1 facing the lower substrate 2, and a color resin layer 5 is provided on the black matrix 3; in an implementation, the touch sensing structure layer 4 may be disposed on a side of the upper substrate 1 facing the lower substrate 2, and specifically, the touch sensing structure layer 4 may be located between the upper substrate 1 and the black matrix layer 3, between the black matrix layer 3 and the color resin layer 5, or above the color resin layer 5 as shown in fig. 2. In addition, the touch sensing structure layer 4 may also be disposed on a side of the lower substrate 2 facing the upper substrate 1, which is not limited herein.
Specifically, in order to ensure that the first touch sensing electrode 41 and the second touch sensing electrode 42 are arranged to intersect in the touch sensing structure layer 4, in an implementation, the first touch sensing electrode 41 may be arranged to extend along a transverse direction, and the second touch sensing electrode 42 may be arranged to extend along a longitudinal direction, or vice versa. The following description will be made by taking the first touch sensing electrode 41 as an example extending in the lateral direction and the second touch sensing electrode 42 as an example extending in the longitudinal direction.
In specific implementation, in order to ensure that the first touch sensing electrode 41 and the second touch sensing electrode 42 are disposed in the same layer and insulated from each other in the touch sensing structure layer 4, as shown in fig. 3a, the first touch sensing electrode 41 may be composed of a plurality of first touch sensing sub-electrodes 411 that are independent from each other, and the first touch sensing sub-electrodes 411 and the second touch sensing electrode 42 are arranged at intervals; the first touch sensing sub-electrodes 411 belonging to the same first touch sensing electrode 41 and located at two sides of the second touch sensing electrode 42 are electrically connected through the bridge line 412. Moreover, since the bridge line 412 and the first touch sensing sub-electrode 411 are located at different layers and can be connected through the via 413, the bridge line 412 and the second touch sensing electrode 42 are insulated from each other.
Or, in another example, as shown in fig. 3b, the second touch sensing electrode 42 is composed of a plurality of second touch sensing sub-electrodes 421 independent from each other, and the second touch sensing sub-electrodes 421 are arranged at intervals from the first touch sensing electrode 41; the second touch sensing sub-electrodes 421 belonging to the same second touch sensing electrode 42 and located at two sides of the first touch sensing electrode 41 are electrically connected through the bridge line 422. Moreover, since the bridge line 422 and the second touch sensing sub-electrode 421 are located at different layers and can be connected through the via 423, the bridge line 422 and the first touch sensing electrode 41 are insulated from each other.
In the above two examples, in order to ensure that the bridge lines 412 connecting the first touch sensing sub-electrodes 411 and the bridge lines 422 connecting the second touch sensing sub-electrodes 421 do not occupy the aperture ratio, the bridge lines 412 and 422 are generally arranged to coincide with the pattern of the black matrix layer, i.e., the orthographic projections of the bridge lines 412 and 422 on the lower substrate 2 are located in the area of the pattern of the black matrix layer 3.
It should be noted that the embodiment of the present invention provides a bridge line, a first touch sensing electrode and a second touch sensing electrode, which are located on different layers, and therefore the bridge line can be disposed between two adjacent layers of films having an insulating effect, and in addition, the bridge line can also be disposed on the same layer as the black matrix layer, which is not limited herein.
Further, in the touch screen provided by the embodiment of the present invention, in order to prevent signal interference between the first touch sensing electrodes 41, as shown in fig. 3a, a first floating electrode 6 may be further disposed between two adjacent first touch sensing electrodes 41. In the touch time period, the first floating electrode 6 is grounded.
Similarly, in order to prevent signal interference between the second touch sensing electrodes 42, as shown in fig. 3b, a second floating electrode 7 may be further disposed between two adjacent second touch sensing electrodes 42. In the touch time period, the second floating electrode 7 is grounded.
Further, in order to ensure that the increased first and second floating electrodes 6 and 7 do not occupy the aperture ratio, it is preferable that the first and second floating electrodes 6 and 7 are disposed to coincide with the pattern of the black matrix layer, that is, as shown in fig. 3a, the orthographic projection of the first floating electrode 6 on the lower substrate 2 is located in the region where the pattern of the black matrix layer 3 is located; the orthographic projection of the second floating electrode 7 on the lower substrate 2 is positioned in the area where the pattern of the black matrix layer 3 is positioned.
Referring to fig. 4, a timing diagram for implementing an image display and a touch function is shown to specifically describe an operation principle of the in-cell touch screen according to an embodiment of the present invention.
In FIG. 4, V-sync is a timing signal. The grid line comprises n grid lines, namely a grid line 1 (Gate 1), a grid line 2 (Gate 2), a grid line m (Gate m), a grid line m +1 (Gate m + 1), a grid line m +2 (Gate m + 2), a grid line m +3 (Gate m + 3), a grid line n-1 (Gate n-1) and a grid line n (Gate n). And also includes a data line Date. The timing of n touch drive electrodes (T1, T2.... ·, Tn), and the timing of n touch sense electrodes (R1, R2...... Rn).
Setting the time for displaying one frame of image to be 16.7ms, as shown in fig. 4, the first 11.7ms is a display time period, and the last 5ms is a touch time period; in the specific implementation process, the gate voltage is sequentially applied to the gate lines within the first 11.7ms, and simultaneously, the data signals are sequentially applied to the data lines, so that the image display is realized. And applying low level signals to the grid lines and the data lines within the last 5ms so as to turn off the TFTs connected with the grid lines. Sequentially applying a certain touch driving voltage V to the touch driving electrodes Tx1And simultaneously applying a constant voltage or an alternating voltage V to the touch sensing electrodes Rx0. With a voltage V applied0And a voltage V is applied to the touch sensing electrode1And a capacitance is formed between the touch driving electrodes to realize the touch function.
The above 11.7ms of the display time period and 5ms of the touch time period are only for illustrating the present invention, and in the specific implementation process, the display time period is not limited to 11.7ms, and the touch time period is not limited to 5 ms.
It should be noted that the embedded touch screen provided by the embodiment of the present invention can be integrated in a liquid crystal display panel of a TN mode or a liquid crystal display panel of an Advanced Super dimensional switch (ADS) mode. The ADS mode is a planar electric field wide viewing angle core technology, and the core technical characteristics are described as follows: the electric field generated by the edge of the slit electrode in the same plane and the electric field generated between the slit electrode layer and the plate electrode layer form a multi-dimensional electric field, so that all oriented liquid crystal molecules between the slit electrodes and right above the electrodes in the liquid crystal box can rotate, the working efficiency of the liquid crystal is improved, and the light transmission efficiency is increased. The switching technology of the ADS mode can improve the picture quality of TFT-LCD products, and has the advantages of high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low chromatic aberration, no squeezing water ripple (push Mura) and the like. Aiming at different applications, the improved technologies of the ADS technology comprise a high-transmittance I-ADS technology, a high-aperture-ratio H-ADS technology, a high-resolution S-ADS technology and the like.
Based on same utility model the design, the embodiment of the utility model provides a still provides a display device, include the embodiment of the utility model provides an above-mentioned embedded touch-sensitive screen, this display device can be for: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can be referred to the embodiment of the in-cell touch screen, and repeated details are not repeated.
The embodiment of the utility model provides an above-mentioned embedded touch-sensitive screen and display device has increased the touch sensing structural layer that is used for realizing the touch-control function between upper substrate and infrabasal plate, and this touch sensing structural layer includes: the first touch sensing electrode and the second touch sensing electrode are arranged on the same layer, insulated from each other and arranged in a crossed manner, and the orthographic projection of the added pattern of the touch sensing structure layer on the lower substrate is positioned in the region where the pattern of the black matrix layer is positioned, so that the occupation of the aperture opening ratio of the pixel unit can be avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. An in-cell touch screen includes an upper substrate and a lower substrate disposed opposite to each other, and further includes: the black matrix layer and the touch sensing structure layer are arranged between the upper substrate and the lower substrate; wherein,
the orthographic projection of the graph of the touch sensing structure layer on the lower substrate is positioned in the area where the graph of the black matrix layer is positioned;
the touch sensing structure layer includes: the first touch sensing electrode and the second touch sensing electrode are arranged on the same layer, insulated from each other and arranged in a crossed manner; loading a touch scanning signal to the first touch sensing electrode in a touch time period, and coupling and outputting the touch scanning signal to the second touch sensing electrode; or loading a touch scanning signal to the second touch sensing electrode, and coupling the touch scanning signal to the first touch sensing electrode and outputting the touch scanning signal.
2. The touch screen of claim 1, wherein the black matrix layer is on a side of the upper substrate facing the lower substrate, and a color resin layer is further disposed on the black matrix layer;
the touch sensing structure layer is located between the upper substrate and the black matrix layer, or between the black matrix layer and the color resin layer, or above the color resin layer.
3. The touch screen of claim 1, wherein the first touch sensing electrode is composed of a plurality of first touch sensing sub-electrodes independent of each other, the first touch sensing sub-electrodes being spaced apart from the second touch sensing electrode; the first touch sensing sub-electrodes which belong to the same first touch sensing electrode and are positioned at two sides of the second touch sensing electrode are electrically connected through bridging lines; or,
the second touch sensing electrode is composed of a plurality of mutually independent second touch sensing sub-electrodes which are arranged at intervals with the first touch sensing electrode; and the second touch sensing sub-electrodes which belong to the same second touch sensing electrode and are positioned at two sides of the first touch sensing electrode are electrically connected through a bridging line.
4. The touch screen of claim 3, wherein an orthographic projection of the bridge line on the lower substrate is located in an area where a pattern of the black matrix layer is located.
5. The touch screen of claim 1, wherein a first floating electrode is disposed between two adjacent first touch sensing electrodes; and/or the presence of a gas in the gas,
and a second floating electrode is arranged between two adjacent second touch sensing electrodes.
6. The touch screen of claim 5, wherein an orthographic projection of the first floating electrode on the lower substrate is located in a region where the pattern of the black matrix layer is located;
and the orthographic projection of the second floating electrode on the lower substrate is positioned in the area where the pattern of the black matrix layer is positioned.
7. The touch screen of any of claims 1-5, wherein the material of the first touch sensing electrode and the second touch sensing electrode is a metal material or a transparent conductive oxide material.
8. A display device comprising the in-cell touch screen according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320597500.9U CN203480471U (en) | 2013-09-23 | 2013-09-23 | Embedded type touch screen and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320597500.9U CN203480471U (en) | 2013-09-23 | 2013-09-23 | Embedded type touch screen and display device |
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| CN203480471U true CN203480471U (en) | 2014-03-12 |
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| CN201320597500.9U Expired - Lifetime CN203480471U (en) | 2013-09-23 | 2013-09-23 | Embedded type touch screen and display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103488341A (en) * | 2013-09-23 | 2014-01-01 | 京东方科技集团股份有限公司 | In-cell touch panel and display device |
| CN106094373A (en) * | 2016-06-02 | 2016-11-09 | 武汉华星光电技术有限公司 | TFT substrate and preparation method thereof |
| CN106291216A (en) * | 2016-08-04 | 2017-01-04 | 武汉华星光电技术有限公司 | In-cell touch panel, test circuit and method of testing |
| CN107039009A (en) * | 2017-04-20 | 2017-08-11 | 厦门天马微电子有限公司 | A kind of dot structure and array base palte |
| CN109407374A (en) * | 2018-07-24 | 2019-03-01 | 友达光电股份有限公司 | Display device and sensing element substrate |
| WO2019109680A1 (en) * | 2017-12-07 | 2019-06-13 | 京东方科技集团股份有限公司 | Feature recognition structure, manufacturing method, driving method and relevant apparatus |
-
2013
- 2013-09-23 CN CN201320597500.9U patent/CN203480471U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103488341A (en) * | 2013-09-23 | 2014-01-01 | 京东方科技集团股份有限公司 | In-cell touch panel and display device |
| CN106094373A (en) * | 2016-06-02 | 2016-11-09 | 武汉华星光电技术有限公司 | TFT substrate and preparation method thereof |
| CN106291216A (en) * | 2016-08-04 | 2017-01-04 | 武汉华星光电技术有限公司 | In-cell touch panel, test circuit and method of testing |
| CN107039009A (en) * | 2017-04-20 | 2017-08-11 | 厦门天马微电子有限公司 | A kind of dot structure and array base palte |
| CN107039009B (en) * | 2017-04-20 | 2019-02-12 | 厦门天马微电子有限公司 | A kind of dot structure and array substrate |
| WO2019109680A1 (en) * | 2017-12-07 | 2019-06-13 | 京东方科技集团股份有限公司 | Feature recognition structure, manufacturing method, driving method and relevant apparatus |
| US11353982B2 (en) | 2017-12-07 | 2022-06-07 | Boe Technology Group Co., Ltd. | Feature recognition structure, fabricating method, driving method and related device |
| CN109407374A (en) * | 2018-07-24 | 2019-03-01 | 友达光电股份有限公司 | Display device and sensing element substrate |
| CN109407374B (en) * | 2018-07-24 | 2021-11-02 | 友达光电股份有限公司 | Display device and sensing element substrate |
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